(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){

},{}],2:[function(require,module,exports){
var asn1 = exports;

asn1.bignum = require('bn.js');

asn1.define = require('./asn1/api').define;
asn1.base = require('./asn1/base');
asn1.constants = require('./asn1/constants');
asn1.decoders = require('./asn1/decoders');
asn1.encoders = require('./asn1/encoders');

},{"./asn1/api":3,"./asn1/base":5,"./asn1/constants":9,"./asn1/decoders":11,"./asn1/encoders":14,"bn.js":17}],3:[function(require,module,exports){
var asn1 = require('../asn1');
var inherits = require('inherits');

var api = exports;

api.define = function define(name, body) {
  return new Entity(name, body);
};

function Entity(name, body) {
  this.name = name;
  this.body = body;

  this.decoders = {};
  this.encoders = {};
};

Entity.prototype._createNamed = function createNamed(base) {
  var named;
  try {
    named = require('vm').runInThisContext(
      '(function ' + this.name + '(entity) {\n' +
      '  this._initNamed(entity);\n' +
      '})'
    );
  } catch (e) {
    named = function (entity) {
      this._initNamed(entity);
    };
  }
  inherits(named, base);
  named.prototype._initNamed = function initnamed(entity) {
    base.call(this, entity);
  };

  return new named(this);
};

Entity.prototype._getDecoder = function _getDecoder(enc) {
  enc = enc || 'der';
  // Lazily create decoder
  if (!this.decoders.hasOwnProperty(enc))
    this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
  return this.decoders[enc];
};

Entity.prototype.decode = function decode(data, enc, options) {
  return this._getDecoder(enc).decode(data, options);
};

Entity.prototype._getEncoder = function _getEncoder(enc) {
  enc = enc || 'der';
  // Lazily create encoder
  if (!this.encoders.hasOwnProperty(enc))
    this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
  return this.encoders[enc];
};

Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
  return this._getEncoder(enc).encode(data, reporter);
};

},{"../asn1":2,"inherits":100,"vm":160}],4:[function(require,module,exports){
var inherits = require('inherits');
var Reporter = require('../base').Reporter;
var Buffer = require('buffer').Buffer;

function DecoderBuffer(base, options) {
  Reporter.call(this, options);
  if (!Buffer.isBuffer(base)) {
    this.error('Input not Buffer');
    return;
  }

  this.base = base;
  this.offset = 0;
  this.length = base.length;
}
inherits(DecoderBuffer, Reporter);
exports.DecoderBuffer = DecoderBuffer;

DecoderBuffer.prototype.save = function save() {
  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
};

DecoderBuffer.prototype.restore = function restore(save) {
  // Return skipped data
  var res = new DecoderBuffer(this.base);
  res.offset = save.offset;
  res.length = this.offset;

  this.offset = save.offset;
  Reporter.prototype.restore.call(this, save.reporter);

  return res;
};

DecoderBuffer.prototype.isEmpty = function isEmpty() {
  return this.offset === this.length;
};

DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
  if (this.offset + 1 <= this.length)
    return this.base.readUInt8(this.offset++, true);
  else
    return this.error(fail || 'DecoderBuffer overrun');
}

DecoderBuffer.prototype.skip = function skip(bytes, fail) {
  if (!(this.offset + bytes <= this.length))
    return this.error(fail || 'DecoderBuffer overrun');

  var res = new DecoderBuffer(this.base);

  // Share reporter state
  res._reporterState = this._reporterState;

  res.offset = this.offset;
  res.length = this.offset + bytes;
  this.offset += bytes;
  return res;
}

DecoderBuffer.prototype.raw = function raw(save) {
  return this.base.slice(save ? save.offset : this.offset, this.length);
}

function EncoderBuffer(value, reporter) {
  if (Array.isArray(value)) {
    this.length = 0;
    this.value = value.map(function(item) {
      if (!(item instanceof EncoderBuffer))
        item = new EncoderBuffer(item, reporter);
      this.length += item.length;
      return item;
    }, this);
  } else if (typeof value === 'number') {
    if (!(0 <= value && value <= 0xff))
      return reporter.error('non-byte EncoderBuffer value');
    this.value = value;
    this.length = 1;
  } else if (typeof value === 'string') {
    this.value = value;
    this.length = Buffer.byteLength(value);
  } else if (Buffer.isBuffer(value)) {
    this.value = value;
    this.length = value.length;
  } else {
    return reporter.error('Unsupported type: ' + typeof value);
  }
}
exports.EncoderBuffer = EncoderBuffer;

EncoderBuffer.prototype.join = function join(out, offset) {
  if (!out)
    out = new Buffer(this.length);
  if (!offset)
    offset = 0;

  if (this.length === 0)
    return out;

  if (Array.isArray(this.value)) {
    this.value.forEach(function(item) {
      item.join(out, offset);
      offset += item.length;
    });
  } else {
    if (typeof this.value === 'number')
      out[offset] = this.value;
    else if (typeof this.value === 'string')
      out.write(this.value, offset);
    else if (Buffer.isBuffer(this.value))
      this.value.copy(out, offset);
    offset += this.length;
  }

  return out;
};

},{"../base":5,"buffer":48,"inherits":100}],5:[function(require,module,exports){
var base = exports;

base.Reporter = require('./reporter').Reporter;
base.DecoderBuffer = require('./buffer').DecoderBuffer;
base.EncoderBuffer = require('./buffer').EncoderBuffer;
base.Node = require('./node');

},{"./buffer":4,"./node":6,"./reporter":7}],6:[function(require,module,exports){
var Reporter = require('../base').Reporter;
var EncoderBuffer = require('../base').EncoderBuffer;
var DecoderBuffer = require('../base').DecoderBuffer;
var assert = require('minimalistic-assert');

// Supported tags
var tags = [
  'seq', 'seqof', 'set', 'setof', 'objid', 'bool',
  'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc',
  'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str',
  'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr'
];

// Public methods list
var methods = [
  'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice',
  'any', 'contains'
].concat(tags);

// Overrided methods list
var overrided = [
  '_peekTag', '_decodeTag', '_use',
  '_decodeStr', '_decodeObjid', '_decodeTime',
  '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList',

  '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime',
  '_encodeNull', '_encodeInt', '_encodeBool'
];

function Node(enc, parent) {
  var state = {};
  this._baseState = state;

  state.enc = enc;

  state.parent = parent || null;
  state.children = null;

  // State
  state.tag = null;
  state.args = null;
  state.reverseArgs = null;
  state.choice = null;
  state.optional = false;
  state.any = false;
  state.obj = false;
  state.use = null;
  state.useDecoder = null;
  state.key = null;
  state['default'] = null;
  state.explicit = null;
  state.implicit = null;
  state.contains = null;

  // Should create new instance on each method
  if (!state.parent) {
    state.children = [];
    this._wrap();
  }
}
module.exports = Node;

var stateProps = [
  'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice',
  'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit',
  'implicit', 'contains'
];

Node.prototype.clone = function clone() {
  var state = this._baseState;
  var cstate = {};
  stateProps.forEach(function(prop) {
    cstate[prop] = state[prop];
  });
  var res = new this.constructor(cstate.parent);
  res._baseState = cstate;
  return res;
};

Node.prototype._wrap = function wrap() {
  var state = this._baseState;
  methods.forEach(function(method) {
    this[method] = function _wrappedMethod() {
      var clone = new this.constructor(this);
      state.children.push(clone);
      return clone[method].apply(clone, arguments);
    };
  }, this);
};

Node.prototype._init = function init(body) {
  var state = this._baseState;

  assert(state.parent === null);
  body.call(this);

  // Filter children
  state.children = state.children.filter(function(child) {
    return child._baseState.parent === this;
  }, this);
  assert.equal(state.children.length, 1, 'Root node can have only one child');
};

Node.prototype._useArgs = function useArgs(args) {
  var state = this._baseState;

  // Filter children and args
  var children = args.filter(function(arg) {
    return arg instanceof this.constructor;
  }, this);
  args = args.filter(function(arg) {
    return !(arg instanceof this.constructor);
  }, this);

  if (children.length !== 0) {
    assert(state.children === null);
    state.children = children;

    // Replace parent to maintain backward link
    children.forEach(function(child) {
      child._baseState.parent = this;
    }, this);
  }
  if (args.length !== 0) {
    assert(state.args === null);
    state.args = args;
    state.reverseArgs = args.map(function(arg) {
      if (typeof arg !== 'object' || arg.constructor !== Object)
        return arg;

      var res = {};
      Object.keys(arg).forEach(function(key) {
        if (key == (key | 0))
          key |= 0;
        var value = arg[key];
        res[value] = key;
      });
      return res;
    });
  }
};

//
// Overrided methods
//

overrided.forEach(function(method) {
  Node.prototype[method] = function _overrided() {
    var state = this._baseState;
    throw new Error(method + ' not implemented for encoding: ' + state.enc);
  };
});

//
// Public methods
//

tags.forEach(function(tag) {
  Node.prototype[tag] = function _tagMethod() {
    var state = this._baseState;
    var args = Array.prototype.slice.call(arguments);

    assert(state.tag === null);
    state.tag = tag;

    this._useArgs(args);

    return this;
  };
});

Node.prototype.use = function use(item) {
  assert(item);
  var state = this._baseState;

  assert(state.use === null);
  state.use = item;

  return this;
};

Node.prototype.optional = function optional() {
  var state = this._baseState;

  state.optional = true;

  return this;
};

Node.prototype.def = function def(val) {
  var state = this._baseState;

  assert(state['default'] === null);
  state['default'] = val;
  state.optional = true;

  return this;
};

Node.prototype.explicit = function explicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.explicit = num;

  return this;
};

Node.prototype.implicit = function implicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.implicit = num;

  return this;
};

Node.prototype.obj = function obj() {
  var state = this._baseState;
  var args = Array.prototype.slice.call(arguments);

  state.obj = true;

  if (args.length !== 0)
    this._useArgs(args);

  return this;
};

Node.prototype.key = function key(newKey) {
  var state = this._baseState;

  assert(state.key === null);
  state.key = newKey;

  return this;
};

Node.prototype.any = function any() {
  var state = this._baseState;

  state.any = true;

  return this;
};

Node.prototype.choice = function choice(obj) {
  var state = this._baseState;

  assert(state.choice === null);
  state.choice = obj;
  this._useArgs(Object.keys(obj).map(function(key) {
    return obj[key];
  }));

  return this;
};

Node.prototype.contains = function contains(item) {
  var state = this._baseState;

  assert(state.use === null);
  state.contains = item;

  return this;
};

//
// Decoding
//

Node.prototype._decode = function decode(input, options) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return input.wrapResult(state.children[0]._decode(input, options));

  var result = state['default'];
  var present = true;

  var prevKey = null;
  if (state.key !== null)
    prevKey = input.enterKey(state.key);

  // Check if tag is there
  if (state.optional) {
    var tag = null;
    if (state.explicit !== null)
      tag = state.explicit;
    else if (state.implicit !== null)
      tag = state.implicit;
    else if (state.tag !== null)
      tag = state.tag;

    if (tag === null && !state.any) {
      // Trial and Error
      var save = input.save();
      try {
        if (state.choice === null)
          this._decodeGeneric(state.tag, input, options);
        else
          this._decodeChoice(input, options);
        present = true;
      } catch (e) {
        present = false;
      }
      input.restore(save);
    } else {
      present = this._peekTag(input, tag, state.any);

      if (input.isError(present))
        return present;
    }
  }

  // Push object on stack
  var prevObj;
  if (state.obj && present)
    prevObj = input.enterObject();

  if (present) {
    // Unwrap explicit values
    if (state.explicit !== null) {
      var explicit = this._decodeTag(input, state.explicit);
      if (input.isError(explicit))
        return explicit;
      input = explicit;
    }

    var start = input.offset;

    // Unwrap implicit and normal values
    if (state.use === null && state.choice === null) {
      if (state.any)
        var save = input.save();
      var body = this._decodeTag(
        input,
        state.implicit !== null ? state.implicit : state.tag,
        state.any
      );
      if (input.isError(body))
        return body;

      if (state.any)
        result = input.raw(save);
      else
        input = body;
    }

    if (options && options.track && state.tag !== null)
      options.track(input.path(), start, input.length, 'tagged');

    if (options && options.track && state.tag !== null)
      options.track(input.path(), input.offset, input.length, 'content');

    // Select proper method for tag
    if (state.any)
      result = result;
    else if (state.choice === null)
      result = this._decodeGeneric(state.tag, input, options);
    else
      result = this._decodeChoice(input, options);

    if (input.isError(result))
      return result;

    // Decode children
    if (!state.any && state.choice === null && state.children !== null) {
      state.children.forEach(function decodeChildren(child) {
        // NOTE: We are ignoring errors here, to let parser continue with other
        // parts of encoded data
        child._decode(input, options);
      });
    }

    // Decode contained/encoded by schema, only in bit or octet strings
    if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) {
      var data = new DecoderBuffer(result);
      result = this._getUse(state.contains, input._reporterState.obj)
          ._decode(data, options);
    }
  }

  // Pop object
  if (state.obj && present)
    result = input.leaveObject(prevObj);

  // Set key
  if (state.key !== null && (result !== null || present === true))
    input.leaveKey(prevKey, state.key, result);
  else if (prevKey !== null)
    input.exitKey(prevKey);

  return result;
};

Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) {
  var state = this._baseState;

  if (tag === 'seq' || tag === 'set')
    return null;
  if (tag === 'seqof' || tag === 'setof')
    return this._decodeList(input, tag, state.args[0], options);
  else if (/str$/.test(tag))
    return this._decodeStr(input, tag, options);
  else if (tag === 'objid' && state.args)
    return this._decodeObjid(input, state.args[0], state.args[1], options);
  else if (tag === 'objid')
    return this._decodeObjid(input, null, null, options);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._decodeTime(input, tag, options);
  else if (tag === 'null_')
    return this._decodeNull(input, options);
  else if (tag === 'bool')
    return this._decodeBool(input, options);
  else if (tag === 'objDesc')
    return this._decodeStr(input, tag, options);
  else if (tag === 'int' || tag === 'enum')
    return this._decodeInt(input, state.args && state.args[0], options);

  if (state.use !== null) {
    return this._getUse(state.use, input._reporterState.obj)
        ._decode(input, options);
  } else {
    return input.error('unknown tag: ' + tag);
  }
};

Node.prototype._getUse = function _getUse(entity, obj) {

  var state = this._baseState;
  // Create altered use decoder if implicit is set
  state.useDecoder = this._use(entity, obj);
  assert(state.useDecoder._baseState.parent === null);
  state.useDecoder = state.useDecoder._baseState.children[0];
  if (state.implicit !== state.useDecoder._baseState.implicit) {
    state.useDecoder = state.useDecoder.clone();
    state.useDecoder._baseState.implicit = state.implicit;
  }
  return state.useDecoder;
};

Node.prototype._decodeChoice = function decodeChoice(input, options) {
  var state = this._baseState;
  var result = null;
  var match = false;

  Object.keys(state.choice).some(function(key) {
    var save = input.save();
    var node = state.choice[key];
    try {
      var value = node._decode(input, options);
      if (input.isError(value))
        return false;

      result = { type: key, value: value };
      match = true;
    } catch (e) {
      input.restore(save);
      return false;
    }
    return true;
  }, this);

  if (!match)
    return input.error('Choice not matched');

  return result;
};

//
// Encoding
//

Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) {
  return new EncoderBuffer(data, this.reporter);
};

Node.prototype._encode = function encode(data, reporter, parent) {
  var state = this._baseState;
  if (state['default'] !== null && state['default'] === data)
    return;

  var result = this._encodeValue(data, reporter, parent);
  if (result === undefined)
    return;

  if (this._skipDefault(result, reporter, parent))
    return;

  return result;
};

Node.prototype._encodeValue = function encode(data, reporter, parent) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return state.children[0]._encode(data, reporter || new Reporter());

  var result = null;

  // Set reporter to share it with a child class
  this.reporter = reporter;

  // Check if data is there
  if (state.optional && data === undefined) {
    if (state['default'] !== null)
      data = state['default']
    else
      return;
  }

  // Encode children first
  var content = null;
  var primitive = false;
  if (state.any) {
    // Anything that was given is translated to buffer
    result = this._createEncoderBuffer(data);
  } else if (state.choice) {
    result = this._encodeChoice(data, reporter);
  } else if (state.contains) {
    content = this._getUse(state.contains, parent)._encode(data, reporter);
    primitive = true;
  } else if (state.children) {
    content = state.children.map(function(child) {
      if (child._baseState.tag === 'null_')
        return child._encode(null, reporter, data);

      if (child._baseState.key === null)
        return reporter.error('Child should have a key');
      var prevKey = reporter.enterKey(child._baseState.key);

      if (typeof data !== 'object')
        return reporter.error('Child expected, but input is not object');

      var res = child._encode(data[child._baseState.key], reporter, data);
      reporter.leaveKey(prevKey);

      return res;
    }, this).filter(function(child) {
      return child;
    });
    content = this._createEncoderBuffer(content);
  } else {
    if (state.tag === 'seqof' || state.tag === 'setof') {
      // TODO(indutny): this should be thrown on DSL level
      if (!(state.args && state.args.length === 1))
        return reporter.error('Too many args for : ' + state.tag);

      if (!Array.isArray(data))
        return reporter.error('seqof/setof, but data is not Array');

      var child = this.clone();
      child._baseState.implicit = null;
      content = this._createEncoderBuffer(data.map(function(item) {
        var state = this._baseState;

        return this._getUse(state.args[0], data)._encode(item, reporter);
      }, child));
    } else if (state.use !== null) {
      result = this._getUse(state.use, parent)._encode(data, reporter);
    } else {
      content = this._encodePrimitive(state.tag, data);
      primitive = true;
    }
  }

  // Encode data itself
  var result;
  if (!state.any && state.choice === null) {
    var tag = state.implicit !== null ? state.implicit : state.tag;
    var cls = state.implicit === null ? 'universal' : 'context';

    if (tag === null) {
      if (state.use === null)
        reporter.error('Tag could be omitted only for .use()');
    } else {
      if (state.use === null)
        result = this._encodeComposite(tag, primitive, cls, content);
    }
  }

  // Wrap in explicit
  if (state.explicit !== null)
    result = this._encodeComposite(state.explicit, false, 'context', result);

  return result;
};

Node.prototype._encodeChoice = function encodeChoice(data, reporter) {
  var state = this._baseState;

  var node = state.choice[data.type];
  if (!node) {
    assert(
        false,
        data.type + ' not found in ' +
            JSON.stringify(Object.keys(state.choice)));
  }
  return node._encode(data.value, reporter);
};

Node.prototype._encodePrimitive = function encodePrimitive(tag, data) {
  var state = this._baseState;

  if (/str$/.test(tag))
    return this._encodeStr(data, tag);
  else if (tag === 'objid' && state.args)
    return this._encodeObjid(data, state.reverseArgs[0], state.args[1]);
  else if (tag === 'objid')
    return this._encodeObjid(data, null, null);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._encodeTime(data, tag);
  else if (tag === 'null_')
    return this._encodeNull();
  else if (tag === 'int' || tag === 'enum')
    return this._encodeInt(data, state.args && state.reverseArgs[0]);
  else if (tag === 'bool')
    return this._encodeBool(data);
  else if (tag === 'objDesc')
    return this._encodeStr(data, tag);
  else
    throw new Error('Unsupported tag: ' + tag);
};

Node.prototype._isNumstr = function isNumstr(str) {
  return /^[0-9 ]*$/.test(str);
};

Node.prototype._isPrintstr = function isPrintstr(str) {
  return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str);
};

},{"../base":5,"minimalistic-assert":105}],7:[function(require,module,exports){
var inherits = require('inherits');

function Reporter(options) {
  this._reporterState = {
    obj: null,
    path: [],
    options: options || {},
    errors: []
  };
}
exports.Reporter = Reporter;

Reporter.prototype.isError = function isError(obj) {
  return obj instanceof ReporterError;
};

Reporter.prototype.save = function save() {
  var state = this._reporterState;

  return { obj: state.obj, pathLen: state.path.length };
};

Reporter.prototype.restore = function restore(data) {
  var state = this._reporterState;

  state.obj = data.obj;
  state.path = state.path.slice(0, data.pathLen);
};

Reporter.prototype.enterKey = function enterKey(key) {
  return this._reporterState.path.push(key);
};

Reporter.prototype.exitKey = function exitKey(index) {
  var state = this._reporterState;

  state.path = state.path.slice(0, index - 1);
};

Reporter.prototype.leaveKey = function leaveKey(index, key, value) {
  var state = this._reporterState;

  this.exitKey(index);
  if (state.obj !== null)
    state.obj[key] = value;
};

Reporter.prototype.path = function path() {
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};

Reporter.prototype.enterObject = function enterObject() {
  var state = this._reporterState;

  var prev = state.obj;
  state.obj = {};
  return prev;
};

Reporter.prototype.leaveObject = function leaveObject(prev) {
  var state = this._reporterState;

  var now = state.obj;
  state.obj = prev;
  return now;
};

Reporter.prototype.error = function error(msg) {
  var err;
  var state = this._reporterState;

  var inherited = msg instanceof ReporterError;
  if (inherited) {
    err = msg;
  } else {
    err = new ReporterError(state.path.map(function(elem) {
      return '[' + JSON.stringify(elem) + ']';
    }).join(''), msg.message || msg, msg.stack);
  }

  if (!state.options.partial)
    throw err;

  if (!inherited)
    state.errors.push(err);

  return err;
};

Reporter.prototype.wrapResult = function wrapResult(result) {
  var state = this._reporterState;
  if (!state.options.partial)
    return result;

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    result: this.isError(result) ? null : result,
    errors: state.errors
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};

function ReporterError(path, msg) {
  this.path = path;
  this.rethrow(msg);
};
inherits(ReporterError, Error);

ReporterError.prototype.rethrow = function rethrow(msg) {
  this.message = msg + ' at: ' + (this.path || '(shallow)');
  if (Error.captureStackTrace)
    Error.captureStackTrace(this, ReporterError);

  if (!this.stack) {
    try {
      // IE only adds stack when thrown
      throw new Error(this.message);
    } catch (e) {
      this.stack = e.stack;
    }
  }
  return this;
};

},{"inherits":100}],8:[function(require,module,exports){
var constants = require('../constants');

exports.tagClass = {
  0: 'universal',
  1: 'application',
  2: 'context',
  3: 'private'
};
exports.tagClassByName = constants._reverse(exports.tagClass);

exports.tag = {
  0x00: 'end',
  0x01: 'bool',
  0x02: 'int',
  0x03: 'bitstr',
  0x04: 'octstr',
  0x05: 'null_',
  0x06: 'objid',
  0x07: 'objDesc',
  0x08: 'external',
  0x09: 'real',
  0x0a: 'enum',
  0x0b: 'embed',
  0x0c: 'utf8str',
  0x0d: 'relativeOid',
  0x10: 'seq',
  0x11: 'set',
  0x12: 'numstr',
  0x13: 'printstr',
  0x14: 't61str',
  0x15: 'videostr',
  0x16: 'ia5str',
  0x17: 'utctime',
  0x18: 'gentime',
  0x19: 'graphstr',
  0x1a: 'iso646str',
  0x1b: 'genstr',
  0x1c: 'unistr',
  0x1d: 'charstr',
  0x1e: 'bmpstr'
};
exports.tagByName = constants._reverse(exports.tag);

},{"../constants":9}],9:[function(require,module,exports){
var constants = exports;

// Helper
constants._reverse = function reverse(map) {
  var res = {};

  Object.keys(map).forEach(function(key) {
    // Convert key to integer if it is stringified
    if ((key | 0) == key)
      key = key | 0;

    var value = map[key];
    res[value] = key;
  });

  return res;
};

constants.der = require('./der');

},{"./der":8}],10:[function(require,module,exports){
var inherits = require('inherits');

var asn1 = require('../../asn1');
var base = asn1.base;
var bignum = asn1.bignum;

// Import DER constants
var der = asn1.constants.der;

function DERDecoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DERDecoder;

DERDecoder.prototype.decode = function decode(data, options) {
  if (!(data instanceof base.DecoderBuffer))
    data = new base.DecoderBuffer(data, options);

  return this.tree._decode(data, options);
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._peekTag = function peekTag(buffer, tag, any) {
  if (buffer.isEmpty())
    return false;

  var state = buffer.save();
  var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  buffer.restore(state);

  return decodedTag.tag === tag || decodedTag.tagStr === tag ||
    (decodedTag.tagStr + 'of') === tag || any;
};

DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) {
  var decodedTag = derDecodeTag(buffer,
                                'Failed to decode tag of "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  var len = derDecodeLen(buffer,
                         decodedTag.primitive,
                         'Failed to get length of "' + tag + '"');

  // Failure
  if (buffer.isError(len))
    return len;

  if (!any &&
      decodedTag.tag !== tag &&
      decodedTag.tagStr !== tag &&
      decodedTag.tagStr + 'of' !== tag) {
    return buffer.error('Failed to match tag: "' + tag + '"');
  }

  if (decodedTag.primitive || len !== null)
    return buffer.skip(len, 'Failed to match body of: "' + tag + '"');

  // Indefinite length... find END tag
  var state = buffer.save();
  var res = this._skipUntilEnd(
      buffer,
      'Failed to skip indefinite length body: "' + this.tag + '"');
  if (buffer.isError(res))
    return res;

  len = buffer.offset - state.offset;
  buffer.restore(state);
  return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
};

DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) {
  while (true) {
    var tag = derDecodeTag(buffer, fail);
    if (buffer.isError(tag))
      return tag;
    var len = derDecodeLen(buffer, tag.primitive, fail);
    if (buffer.isError(len))
      return len;

    var res;
    if (tag.primitive || len !== null)
      res = buffer.skip(len)
    else
      res = this._skipUntilEnd(buffer, fail);

    // Failure
    if (buffer.isError(res))
      return res;

    if (tag.tagStr === 'end')
      break;
  }
};

DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder,
                                                    options) {
  var result = [];
  while (!buffer.isEmpty()) {
    var possibleEnd = this._peekTag(buffer, 'end');
    if (buffer.isError(possibleEnd))
      return possibleEnd;

    var res = decoder.decode(buffer, 'der', options);
    if (buffer.isError(res) && possibleEnd)
      break;
    result.push(res);
  }
  return result;
};

DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
  if (tag === 'bitstr') {
    var unused = buffer.readUInt8();
    if (buffer.isError(unused))
      return unused;
    return { unused: unused, data: buffer.raw() };
  } else if (tag === 'bmpstr') {
    var raw = buffer.raw();
    if (raw.length % 2 === 1)
      return buffer.error('Decoding of string type: bmpstr length mismatch');

    var str = '';
    for (var i = 0; i < raw.length / 2; i++) {
      str += String.fromCharCode(raw.readUInt16BE(i * 2));
    }
    return str;
  } else if (tag === 'numstr') {
    var numstr = buffer.raw().toString('ascii');
    if (!this._isNumstr(numstr)) {
      return buffer.error('Decoding of string type: ' +
                          'numstr unsupported characters');
    }
    return numstr;
  } else if (tag === 'octstr') {
    return buffer.raw();
  } else if (tag === 'objDesc') {
    return buffer.raw();
  } else if (tag === 'printstr') {
    var printstr = buffer.raw().toString('ascii');
    if (!this._isPrintstr(printstr)) {
      return buffer.error('Decoding of string type: ' +
                          'printstr unsupported characters');
    }
    return printstr;
  } else if (/str$/.test(tag)) {
    return buffer.raw().toString();
  } else {
    return buffer.error('Decoding of string type: ' + tag + ' unsupported');
  }
};

DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
  var result;
  var identifiers = [];
  var ident = 0;
  while (!buffer.isEmpty()) {
    var subident = buffer.readUInt8();
    ident <<= 7;
    ident |= subident & 0x7f;
    if ((subident & 0x80) === 0) {
      identifiers.push(ident);
      ident = 0;
    }
  }
  if (subident & 0x80)
    identifiers.push(ident);

  var first = (identifiers[0] / 40) | 0;
  var second = identifiers[0] % 40;

  if (relative)
    result = identifiers;
  else
    result = [first, second].concat(identifiers.slice(1));

  if (values) {
    var tmp = values[result.join(' ')];
    if (tmp === undefined)
      tmp = values[result.join('.')];
    if (tmp !== undefined)
      result = tmp;
  }

  return result;
};

DERNode.prototype._decodeTime = function decodeTime(buffer, tag) {
  var str = buffer.raw().toString();
  if (tag === 'gentime') {
    var year = str.slice(0, 4) | 0;
    var mon = str.slice(4, 6) | 0;
    var day = str.slice(6, 8) | 0;
    var hour = str.slice(8, 10) | 0;
    var min = str.slice(10, 12) | 0;
    var sec = str.slice(12, 14) | 0;
  } else if (tag === 'utctime') {
    var year = str.slice(0, 2) | 0;
    var mon = str.slice(2, 4) | 0;
    var day = str.slice(4, 6) | 0;
    var hour = str.slice(6, 8) | 0;
    var min = str.slice(8, 10) | 0;
    var sec = str.slice(10, 12) | 0;
    if (year < 70)
      year = 2000 + year;
    else
      year = 1900 + year;
  } else {
    return buffer.error('Decoding ' + tag + ' time is not supported yet');
  }

  return Date.UTC(year, mon - 1, day, hour, min, sec, 0);
};

DERNode.prototype._decodeNull = function decodeNull(buffer) {
  return null;
};

DERNode.prototype._decodeBool = function decodeBool(buffer) {
  var res = buffer.readUInt8();
  if (buffer.isError(res))
    return res;
  else
    return res !== 0;
};

DERNode.prototype._decodeInt = function decodeInt(buffer, values) {
  // Bigint, return as it is (assume big endian)
  var raw = buffer.raw();
  var res = new bignum(raw);

  if (values)
    res = values[res.toString(10)] || res;

  return res;
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getDecoder('der').tree;
};

// Utility methods

function derDecodeTag(buf, fail) {
  var tag = buf.readUInt8(fail);
  if (buf.isError(tag))
    return tag;

  var cls = der.tagClass[tag >> 6];
  var primitive = (tag & 0x20) === 0;

  // Multi-octet tag - load
  if ((tag & 0x1f) === 0x1f) {
    var oct = tag;
    tag = 0;
    while ((oct & 0x80) === 0x80) {
      oct = buf.readUInt8(fail);
      if (buf.isError(oct))
        return oct;

      tag <<= 7;
      tag |= oct & 0x7f;
    }
  } else {
    tag &= 0x1f;
  }
  var tagStr = der.tag[tag];

  return {
    cls: cls,
    primitive: primitive,
    tag: tag,
    tagStr: tagStr
  };
}

function derDecodeLen(buf, primitive, fail) {
  var len = buf.readUInt8(fail);
  if (buf.isError(len))
    return len;

  // Indefinite form
  if (!primitive && len === 0x80)
    return null;

  // Definite form
  if ((len & 0x80) === 0) {
    // Short form
    return len;
  }

  // Long form
  var num = len & 0x7f;
  if (num > 4)
    return buf.error('length octect is too long');

  len = 0;
  for (var i = 0; i < num; i++) {
    len <<= 8;
    var j = buf.readUInt8(fail);
    if (buf.isError(j))
      return j;
    len |= j;
  }

  return len;
}

},{"../../asn1":2,"inherits":100}],11:[function(require,module,exports){
var decoders = exports;

decoders.der = require('./der');
decoders.pem = require('./pem');

},{"./der":10,"./pem":12}],12:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var DERDecoder = require('./der');

function PEMDecoder(entity) {
  DERDecoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMDecoder, DERDecoder);
module.exports = PEMDecoder;

PEMDecoder.prototype.decode = function decode(data, options) {
  var lines = data.toString().split(/[\r\n]+/g);

  var label = options.label.toUpperCase();

  var re = /^-----(BEGIN|END) ([^-]+)-----$/;
  var start = -1;
  var end = -1;
  for (var i = 0; i < lines.length; i++) {
    var match = lines[i].match(re);
    if (match === null)
      continue;

    if (match[2] !== label)
      continue;

    if (start === -1) {
      if (match[1] !== 'BEGIN')
        break;
      start = i;
    } else {
      if (match[1] !== 'END')
        break;
      end = i;
      break;
    }
  }
  if (start === -1 || end === -1)
    throw new Error('PEM section not found for: ' + label);

  var base64 = lines.slice(start + 1, end).join('');
  // Remove excessive symbols
  base64.replace(/[^a-z0-9\+\/=]+/gi, '');

  var input = new Buffer(base64, 'base64');
  return DERDecoder.prototype.decode.call(this, input, options);
};

},{"./der":10,"buffer":48,"inherits":100}],13:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var asn1 = require('../../asn1');
var base = asn1.base;

// Import DER constants
var der = asn1.constants.der;

function DEREncoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DEREncoder;

DEREncoder.prototype.encode = function encode(data, reporter) {
  return this.tree._encode(data, reporter).join();
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._encodeComposite = function encodeComposite(tag,
                                                              primitive,
                                                              cls,
                                                              content) {
  var encodedTag = encodeTag(tag, primitive, cls, this.reporter);

  // Short form
  if (content.length < 0x80) {
    var header = new Buffer(2);
    header[0] = encodedTag;
    header[1] = content.length;
    return this._createEncoderBuffer([ header, content ]);
  }

  // Long form
  // Count octets required to store length
  var lenOctets = 1;
  for (var i = content.length; i >= 0x100; i >>= 8)
    lenOctets++;

  var header = new Buffer(1 + 1 + lenOctets);
  header[0] = encodedTag;
  header[1] = 0x80 | lenOctets;

  for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8)
    header[i] = j & 0xff;

  return this._createEncoderBuffer([ header, content ]);
};

DERNode.prototype._encodeStr = function encodeStr(str, tag) {
  if (tag === 'bitstr') {
    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
  } else if (tag === 'bmpstr') {
    var buf = new Buffer(str.length * 2);
    for (var i = 0; i < str.length; i++) {
      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
    }
    return this._createEncoderBuffer(buf);
  } else if (tag === 'numstr') {
    if (!this._isNumstr(str)) {
      return this.reporter.error('Encoding of string type: numstr supports ' +
                                 'only digits and space');
    }
    return this._createEncoderBuffer(str);
  } else if (tag === 'printstr') {
    if (!this._isPrintstr(str)) {
      return this.reporter.error('Encoding of string type: printstr supports ' +
                                 'only latin upper and lower case letters, ' +
                                 'digits, space, apostrophe, left and rigth ' +
                                 'parenthesis, plus sign, comma, hyphen, ' +
                                 'dot, slash, colon, equal sign, ' +
                                 'question mark');
    }
    return this._createEncoderBuffer(str);
  } else if (/str$/.test(tag)) {
    return this._createEncoderBuffer(str);
  } else if (tag === 'objDesc') {
    return this._createEncoderBuffer(str);
  } else {
    return this.reporter.error('Encoding of string type: ' + tag +
                               ' unsupported');
  }
};

DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
  if (typeof id === 'string') {
    if (!values)
      return this.reporter.error('string objid given, but no values map found');
    if (!values.hasOwnProperty(id))
      return this.reporter.error('objid not found in values map');
    id = values[id].split(/[\s\.]+/g);
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  } else if (Array.isArray(id)) {
    id = id.slice();
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  }

  if (!Array.isArray(id)) {
    return this.reporter.error('objid() should be either array or string, ' +
                               'got: ' + JSON.stringify(id));
  }

  if (!relative) {
    if (id[1] >= 40)
      return this.reporter.error('Second objid identifier OOB');
    id.splice(0, 2, id[0] * 40 + id[1]);
  }

  // Count number of octets
  var size = 0;
  for (var i = 0; i < id.length; i++) {
    var ident = id[i];
    for (size++; ident >= 0x80; ident >>= 7)
      size++;
  }

  var objid = new Buffer(size);
  var offset = objid.length - 1;
  for (var i = id.length - 1; i >= 0; i--) {
    var ident = id[i];
    objid[offset--] = ident & 0x7f;
    while ((ident >>= 7) > 0)
      objid[offset--] = 0x80 | (ident & 0x7f);
  }

  return this._createEncoderBuffer(objid);
};

function two(num) {
  if (num < 10)
    return '0' + num;
  else
    return num;
}

DERNode.prototype._encodeTime = function encodeTime(time, tag) {
  var str;
  var date = new Date(time);

  if (tag === 'gentime') {
    str = [
      two(date.getFullYear()),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else if (tag === 'utctime') {
    str = [
      two(date.getFullYear() % 100),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else {
    this.reporter.error('Encoding ' + tag + ' time is not supported yet');
  }

  return this._encodeStr(str, 'octstr');
};

DERNode.prototype._encodeNull = function encodeNull() {
  return this._createEncoderBuffer('');
};

DERNode.prototype._encodeInt = function encodeInt(num, values) {
  if (typeof num === 'string') {
    if (!values)
      return this.reporter.error('String int or enum given, but no values map');
    if (!values.hasOwnProperty(num)) {
      return this.reporter.error('Values map doesn\'t contain: ' +
                                 JSON.stringify(num));
    }
    num = values[num];
  }

  // Bignum, assume big endian
  if (typeof num !== 'number' && !Buffer.isBuffer(num)) {
    var numArray = num.toArray();
    if (!num.sign && numArray[0] & 0x80) {
      numArray.unshift(0);
    }
    num = new Buffer(numArray);
  }

  if (Buffer.isBuffer(num)) {
    var size = num.length;
    if (num.length === 0)
      size++;

    var out = new Buffer(size);
    num.copy(out);
    if (num.length === 0)
      out[0] = 0
    return this._createEncoderBuffer(out);
  }

  if (num < 0x80)
    return this._createEncoderBuffer(num);

  if (num < 0x100)
    return this._createEncoderBuffer([0, num]);

  var size = 1;
  for (var i = num; i >= 0x100; i >>= 8)
    size++;

  var out = new Array(size);
  for (var i = out.length - 1; i >= 0; i--) {
    out[i] = num & 0xff;
    num >>= 8;
  }
  if(out[0] & 0x80) {
    out.unshift(0);
  }

  return this._createEncoderBuffer(new Buffer(out));
};

DERNode.prototype._encodeBool = function encodeBool(value) {
  return this._createEncoderBuffer(value ? 0xff : 0);
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getEncoder('der').tree;
};

DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) {
  var state = this._baseState;
  var i;
  if (state['default'] === null)
    return false;

  var data = dataBuffer.join();
  if (state.defaultBuffer === undefined)
    state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join();

  if (data.length !== state.defaultBuffer.length)
    return false;

  for (i=0; i < data.length; i++)
    if (data[i] !== state.defaultBuffer[i])
      return false;

  return true;
};

// Utility methods

function encodeTag(tag, primitive, cls, reporter) {
  var res;

  if (tag === 'seqof')
    tag = 'seq';
  else if (tag === 'setof')
    tag = 'set';

  if (der.tagByName.hasOwnProperty(tag))
    res = der.tagByName[tag];
  else if (typeof tag === 'number' && (tag | 0) === tag)
    res = tag;
  else
    return reporter.error('Unknown tag: ' + tag);

  if (res >= 0x1f)
    return reporter.error('Multi-octet tag encoding unsupported');

  if (!primitive)
    res |= 0x20;

  res |= (der.tagClassByName[cls || 'universal'] << 6);

  return res;
}

},{"../../asn1":2,"buffer":48,"inherits":100}],14:[function(require,module,exports){
var encoders = exports;

encoders.der = require('./der');
encoders.pem = require('./pem');

},{"./der":13,"./pem":15}],15:[function(require,module,exports){
var inherits = require('inherits');

var DEREncoder = require('./der');

function PEMEncoder(entity) {
  DEREncoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMEncoder, DEREncoder);
module.exports = PEMEncoder;

PEMEncoder.prototype.encode = function encode(data, options) {
  var buf = DEREncoder.prototype.encode.call(this, data);

  var p = buf.toString('base64');
  var out = [ '-----BEGIN ' + options.label + '-----' ];
  for (var i = 0; i < p.length; i += 64)
    out.push(p.slice(i, i + 64));
  out.push('-----END ' + options.label + '-----');
  return out.join('\n');
};

},{"./der":13,"inherits":100}],16:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  var i
  for (i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(
      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
    ))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

},{}],17:[function(require,module,exports){
(function (module, exports) {
  'use strict';

  // Utils
  function assert (val, msg) {
    if (!val) throw new Error(msg || 'Assertion failed');
  }

  // Could use `inherits` module, but don't want to move from single file
  // architecture yet.
  function inherits (ctor, superCtor) {
    ctor.super_ = superCtor;
    var TempCtor = function () {};
    TempCtor.prototype = superCtor.prototype;
    ctor.prototype = new TempCtor();
    ctor.prototype.constructor = ctor;
  }

  // BN

  function BN (number, base, endian) {
    if (BN.isBN(number)) {
      return number;
    }

    this.negative = 0;
    this.words = null;
    this.length = 0;

    // Reduction context
    this.red = null;

    if (number !== null) {
      if (base === 'le' || base === 'be') {
        endian = base;
        base = 10;
      }

      this._init(number || 0, base || 10, endian || 'be');
    }
  }
  if (typeof module === 'object') {
    module.exports = BN;
  } else {
    exports.BN = BN;
  }

  BN.BN = BN;
  BN.wordSize = 26;

  var Buffer;
  try {
    Buffer = require('buffer').Buffer;
  } catch (e) {
  }

  BN.isBN = function isBN (num) {
    if (num instanceof BN) {
      return true;
    }

    return num !== null && typeof num === 'object' &&
      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
  };

  BN.max = function max (left, right) {
    if (left.cmp(right) > 0) return left;
    return right;
  };

  BN.min = function min (left, right) {
    if (left.cmp(right) < 0) return left;
    return right;
  };

  BN.prototype._init = function init (number, base, endian) {
    if (typeof number === 'number') {
      return this._initNumber(number, base, endian);
    }

    if (typeof number === 'object') {
      return this._initArray(number, base, endian);
    }

    if (base === 'hex') {
      base = 16;
    }
    assert(base === (base | 0) && base >= 2 && base <= 36);

    number = number.toString().replace(/\s+/g, '');
    var start = 0;
    if (number[0] === '-') {
      start++;
    }

    if (base === 16) {
      this._parseHex(number, start);
    } else {
      this._parseBase(number, base, start);
    }

    if (number[0] === '-') {
      this.negative = 1;
    }

    this.strip();

    if (endian !== 'le') return;

    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initNumber = function _initNumber (number, base, endian) {
    if (number < 0) {
      this.negative = 1;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else if (number < 0x10000000000000) {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    } else {
      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff,
        1
      ];
      this.length = 3;
    }

    if (endian !== 'le') return;

    // Reverse the bytes
    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initArray = function _initArray (number, base, endian) {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    if (number.length <= 0) {
      this.words = [ 0 ];
      this.length = 1;
      return this;
    }

    this.length = Math.ceil(number.length / 3);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    var off = 0;
    if (endian === 'be') {
      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    } else if (endian === 'le') {
      for (i = 0, j = 0; i < number.length; i += 3) {
        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    }
    return this.strip();
  };

  function parseHex (str, start, end) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r <<= 4;

      // 'a' - 'f'
      if (c >= 49 && c <= 54) {
        r |= c - 49 + 0xa;

      // 'A' - 'F'
      } else if (c >= 17 && c <= 22) {
        r |= c - 17 + 0xa;

      // '0' - '9'
      } else {
        r |= c & 0xf;
      }
    }
    return r;
  }

  BN.prototype._parseHex = function _parseHex (number, start) {
    // Create possibly bigger array to ensure that it fits the number
    this.length = Math.ceil((number.length - start) / 6);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    // Scan 24-bit chunks and add them to the number
    var off = 0;
    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
      w = parseHex(number, i, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
      off += 24;
      if (off >= 26) {
        off -= 26;
        j++;
      }
    }
    if (i + 6 !== start) {
      w = parseHex(number, start, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    }
    this.strip();
  };

  function parseBase (str, start, end, mul) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r *= mul;

      // 'a'
      if (c >= 49) {
        r += c - 49 + 0xa;

      // 'A'
      } else if (c >= 17) {
        r += c - 17 + 0xa;

      // '0' - '9'
      } else {
        r += c;
      }
    }
    return r;
  }

  BN.prototype._parseBase = function _parseBase (number, base, start) {
    // Initialize as zero
    this.words = [ 0 ];
    this.length = 1;

    // Find length of limb in base
    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
      limbLen++;
    }
    limbLen--;
    limbPow = (limbPow / base) | 0;

    var total = number.length - start;
    var mod = total % limbLen;
    var end = Math.min(total, total - mod) + start;

    var word = 0;
    for (var i = start; i < end; i += limbLen) {
      word = parseBase(number, i, i + limbLen, base);

      this.imuln(limbPow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }

    if (mod !== 0) {
      var pow = 1;
      word = parseBase(number, i, number.length, base);

      for (i = 0; i < mod; i++) {
        pow *= base;
      }

      this.imuln(pow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }
  };

  BN.prototype.copy = function copy (dest) {
    dest.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      dest.words[i] = this.words[i];
    }
    dest.length = this.length;
    dest.negative = this.negative;
    dest.red = this.red;
  };

  BN.prototype.clone = function clone () {
    var r = new BN(null);
    this.copy(r);
    return r;
  };

  BN.prototype._expand = function _expand (size) {
    while (this.length < size) {
      this.words[this.length++] = 0;
    }
    return this;
  };

  // Remove leading `0` from `this`
  BN.prototype.strip = function strip () {
    while (this.length > 1 && this.words[this.length - 1] === 0) {
      this.length--;
    }
    return this._normSign();
  };

  BN.prototype._normSign = function _normSign () {
    // -0 = 0
    if (this.length === 1 && this.words[0] === 0) {
      this.negative = 0;
    }
    return this;
  };

  BN.prototype.inspect = function inspect () {
    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
  };

  /*

  var zeros = [];
  var groupSizes = [];
  var groupBases = [];

  var s = '';
  var i = -1;
  while (++i < BN.wordSize) {
    zeros[i] = s;
    s += '0';
  }
  groupSizes[0] = 0;
  groupSizes[1] = 0;
  groupBases[0] = 0;
  groupBases[1] = 0;
  var base = 2 - 1;
  while (++base < 36 + 1) {
    var groupSize = 0;
    var groupBase = 1;
    while (groupBase < (1 << BN.wordSize) / base) {
      groupBase *= base;
      groupSize += 1;
    }
    groupSizes[base] = groupSize;
    groupBases[base] = groupBase;
  }

  */

  var zeros = [
    '',
    '0',
    '00',
    '000',
    '0000',
    '00000',
    '000000',
    '0000000',
    '00000000',
    '000000000',
    '0000000000',
    '00000000000',
    '000000000000',
    '0000000000000',
    '00000000000000',
    '000000000000000',
    '0000000000000000',
    '00000000000000000',
    '000000000000000000',
    '0000000000000000000',
    '00000000000000000000',
    '000000000000000000000',
    '0000000000000000000000',
    '00000000000000000000000',
    '000000000000000000000000',
    '0000000000000000000000000'
  ];

  var groupSizes = [
    0, 0,
    25, 16, 12, 11, 10, 9, 8,
    8, 7, 7, 7, 7, 6, 6,
    6, 6, 6, 6, 6, 5, 5,
    5, 5, 5, 5, 5, 5, 5,
    5, 5, 5, 5, 5, 5, 5
  ];

  var groupBases = [
    0, 0,
    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
  ];

  BN.prototype.toString = function toString (base, padding) {
    base = base || 10;
    padding = padding | 0 || 1;

    var out;
    if (base === 16 || base === 'hex') {
      out = '';
      var off = 0;
      var carry = 0;
      for (var i = 0; i < this.length; i++) {
        var w = this.words[i];
        var word = (((w << off) | carry) & 0xffffff).toString(16);
        carry = (w >>> (24 - off)) & 0xffffff;
        if (carry !== 0 || i !== this.length - 1) {
          out = zeros[6 - word.length] + word + out;
        } else {
          out = word + out;
        }
        off += 2;
        if (off >= 26) {
          off -= 26;
          i--;
        }
      }
      if (carry !== 0) {
        out = carry.toString(16) + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    if (base === (base | 0) && base >= 2 && base <= 36) {
      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
      var groupSize = groupSizes[base];
      // var groupBase = Math.pow(base, groupSize);
      var groupBase = groupBases[base];
      out = '';
      var c = this.clone();
      c.negative = 0;
      while (!c.isZero()) {
        var r = c.modn(groupBase).toString(base);
        c = c.idivn(groupBase);

        if (!c.isZero()) {
          out = zeros[groupSize - r.length] + r + out;
        } else {
          out = r + out;
        }
      }
      if (this.isZero()) {
        out = '0' + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    assert(false, 'Base should be between 2 and 36');
  };

  BN.prototype.toNumber = function toNumber () {
    var ret = this.words[0];
    if (this.length === 2) {
      ret += this.words[1] * 0x4000000;
    } else if (this.length === 3 && this.words[2] === 0x01) {
      // NOTE: at this stage it is known that the top bit is set
      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
    } else if (this.length > 2) {
      assert(false, 'Number can only safely store up to 53 bits');
    }
    return (this.negative !== 0) ? -ret : ret;
  };

  BN.prototype.toJSON = function toJSON () {
    return this.toString(16);
  };

  BN.prototype.toBuffer = function toBuffer (endian, length) {
    assert(typeof Buffer !== 'undefined');
    return this.toArrayLike(Buffer, endian, length);
  };

  BN.prototype.toArray = function toArray (endian, length) {
    return this.toArrayLike(Array, endian, length);
  };

  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
    var byteLength = this.byteLength();
    var reqLength = length || Math.max(1, byteLength);
    assert(byteLength <= reqLength, 'byte array longer than desired length');
    assert(reqLength > 0, 'Requested array length <= 0');

    this.strip();
    var littleEndian = endian === 'le';
    var res = new ArrayType(reqLength);

    var b, i;
    var q = this.clone();
    if (!littleEndian) {
      // Assume big-endian
      for (i = 0; i < reqLength - byteLength; i++) {
        res[i] = 0;
      }

      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[reqLength - i - 1] = b;
      }
    } else {
      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[i] = b;
      }

      for (; i < reqLength; i++) {
        res[i] = 0;
      }
    }

    return res;
  };

  if (Math.clz32) {
    BN.prototype._countBits = function _countBits (w) {
      return 32 - Math.clz32(w);
    };
  } else {
    BN.prototype._countBits = function _countBits (w) {
      var t = w;
      var r = 0;
      if (t >= 0x1000) {
        r += 13;
        t >>>= 13;
      }
      if (t >= 0x40) {
        r += 7;
        t >>>= 7;
      }
      if (t >= 0x8) {
        r += 4;
        t >>>= 4;
      }
      if (t >= 0x02) {
        r += 2;
        t >>>= 2;
      }
      return r + t;
    };
  }

  BN.prototype._zeroBits = function _zeroBits (w) {
    // Short-cut
    if (w === 0) return 26;

    var t = w;
    var r = 0;
    if ((t & 0x1fff) === 0) {
      r += 13;
      t >>>= 13;
    }
    if ((t & 0x7f) === 0) {
      r += 7;
      t >>>= 7;
    }
    if ((t & 0xf) === 0) {
      r += 4;
      t >>>= 4;
    }
    if ((t & 0x3) === 0) {
      r += 2;
      t >>>= 2;
    }
    if ((t & 0x1) === 0) {
      r++;
    }
    return r;
  };

  // Return number of used bits in a BN
  BN.prototype.bitLength = function bitLength () {
    var w = this.words[this.length - 1];
    var hi = this._countBits(w);
    return (this.length - 1) * 26 + hi;
  };

  function toBitArray (num) {
    var w = new Array(num.bitLength());

    for (var bit = 0; bit < w.length; bit++) {
      var off = (bit / 26) | 0;
      var wbit = bit % 26;

      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
    }

    return w;
  }

  // Number of trailing zero bits
  BN.prototype.zeroBits = function zeroBits () {
    if (this.isZero()) return 0;

    var r = 0;
    for (var i = 0; i < this.length; i++) {
      var b = this._zeroBits(this.words[i]);
      r += b;
      if (b !== 26) break;
    }
    return r;
  };

  BN.prototype.byteLength = function byteLength () {
    return Math.ceil(this.bitLength() / 8);
  };

  BN.prototype.toTwos = function toTwos (width) {
    if (this.negative !== 0) {
      return this.abs().inotn(width).iaddn(1);
    }
    return this.clone();
  };

  BN.prototype.fromTwos = function fromTwos (width) {
    if (this.testn(width - 1)) {
      return this.notn(width).iaddn(1).ineg();
    }
    return this.clone();
  };

  BN.prototype.isNeg = function isNeg () {
    return this.negative !== 0;
  };

  // Return negative clone of `this`
  BN.prototype.neg = function neg () {
    return this.clone().ineg();
  };

  BN.prototype.ineg = function ineg () {
    if (!this.isZero()) {
      this.negative ^= 1;
    }

    return this;
  };

  // Or `num` with `this` in-place
  BN.prototype.iuor = function iuor (num) {
    while (this.length < num.length) {
      this.words[this.length++] = 0;
    }

    for (var i = 0; i < num.length; i++) {
      this.words[i] = this.words[i] | num.words[i];
    }

    return this.strip();
  };

  BN.prototype.ior = function ior (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuor(num);
  };

  // Or `num` with `this`
  BN.prototype.or = function or (num) {
    if (this.length > num.length) return this.clone().ior(num);
    return num.clone().ior(this);
  };

  BN.prototype.uor = function uor (num) {
    if (this.length > num.length) return this.clone().iuor(num);
    return num.clone().iuor(this);
  };

  // And `num` with `this` in-place
  BN.prototype.iuand = function iuand (num) {
    // b = min-length(num, this)
    var b;
    if (this.length > num.length) {
      b = num;
    } else {
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = this.words[i] & num.words[i];
    }

    this.length = b.length;

    return this.strip();
  };

  BN.prototype.iand = function iand (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuand(num);
  };

  // And `num` with `this`
  BN.prototype.and = function and (num) {
    if (this.length > num.length) return this.clone().iand(num);
    return num.clone().iand(this);
  };

  BN.prototype.uand = function uand (num) {
    if (this.length > num.length) return this.clone().iuand(num);
    return num.clone().iuand(this);
  };

  // Xor `num` with `this` in-place
  BN.prototype.iuxor = function iuxor (num) {
    // a.length > b.length
    var a;
    var b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = a.words[i] ^ b.words[i];
    }

    if (this !== a) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = a.length;

    return this.strip();
  };

  BN.prototype.ixor = function ixor (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuxor(num);
  };

  // Xor `num` with `this`
  BN.prototype.xor = function xor (num) {
    if (this.length > num.length) return this.clone().ixor(num);
    return num.clone().ixor(this);
  };

  BN.prototype.uxor = function uxor (num) {
    if (this.length > num.length) return this.clone().iuxor(num);
    return num.clone().iuxor(this);
  };

  // Not ``this`` with ``width`` bitwidth
  BN.prototype.inotn = function inotn (width) {
    assert(typeof width === 'number' && width >= 0);

    var bytesNeeded = Math.ceil(width / 26) | 0;
    var bitsLeft = width % 26;

    // Extend the buffer with leading zeroes
    this._expand(bytesNeeded);

    if (bitsLeft > 0) {
      bytesNeeded--;
    }

    // Handle complete words
    for (var i = 0; i < bytesNeeded; i++) {
      this.words[i] = ~this.words[i] & 0x3ffffff;
    }

    // Handle the residue
    if (bitsLeft > 0) {
      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
    }

    // And remove leading zeroes
    return this.strip();
  };

  BN.prototype.notn = function notn (width) {
    return this.clone().inotn(width);
  };

  // Set `bit` of `this`
  BN.prototype.setn = function setn (bit, val) {
    assert(typeof bit === 'number' && bit >= 0);

    var off = (bit / 26) | 0;
    var wbit = bit % 26;

    this._expand(off + 1);

    if (val) {
      this.words[off] = this.words[off] | (1 << wbit);
    } else {
      this.words[off] = this.words[off] & ~(1 << wbit);
    }

    return this.strip();
  };

  // Add `num` to `this` in-place
  BN.prototype.iadd = function iadd (num) {
    var r;

    // negative + positive
    if (this.negative !== 0 && num.negative === 0) {
      this.negative = 0;
      r = this.isub(num);
      this.negative ^= 1;
      return this._normSign();

    // positive + negative
    } else if (this.negative === 0 && num.negative !== 0) {
      num.negative = 0;
      r = this.isub(num);
      num.negative = 1;
      return r._normSign();
    }

    // a.length > b.length
    var a, b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }

    this.length = a.length;
    if (carry !== 0) {
      this.words[this.length] = carry;
      this.length++;
    // Copy the rest of the words
    } else if (a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    return this;
  };

  // Add `num` to `this`
  BN.prototype.add = function add (num) {
    var res;
    if (num.negative !== 0 && this.negative === 0) {
      num.negative = 0;
      res = this.sub(num);
      num.negative ^= 1;
      return res;
    } else if (num.negative === 0 && this.negative !== 0) {
      this.negative = 0;
      res = num.sub(this);
      this.negative = 1;
      return res;
    }

    if (this.length > num.length) return this.clone().iadd(num);

    return num.clone().iadd(this);
  };

  // Subtract `num` from `this` in-place
  BN.prototype.isub = function isub (num) {
    // this - (-num) = this + num
    if (num.negative !== 0) {
      num.negative = 0;
      var r = this.iadd(num);
      num.negative = 1;
      return r._normSign();

    // -this - num = -(this + num)
    } else if (this.negative !== 0) {
      this.negative = 0;
      this.iadd(num);
      this.negative = 1;
      return this._normSign();
    }

    // At this point both numbers are positive
    var cmp = this.cmp(num);

    // Optimization - zeroify
    if (cmp === 0) {
      this.negative = 0;
      this.length = 1;
      this.words[0] = 0;
      return this;
    }

    // a > b
    var a, b;
    if (cmp > 0) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }

    // Copy rest of the words
    if (carry === 0 && i < a.length && a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = Math.max(this.length, i);

    if (a !== this) {
      this.negative = 1;
    }

    return this.strip();
  };

  // Subtract `num` from `this`
  BN.prototype.sub = function sub (num) {
    return this.clone().isub(num);
  };

  function smallMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    var len = (self.length + num.length) | 0;
    out.length = len;
    len = (len - 1) | 0;

    // Peel one iteration (compiler can't do it, because of code complexity)
    var a = self.words[0] | 0;
    var b = num.words[0] | 0;
    var r = a * b;

    var lo = r & 0x3ffffff;
    var carry = (r / 0x4000000) | 0;
    out.words[0] = lo;

    for (var k = 1; k < len; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = carry >>> 26;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = (k - j) | 0;
        a = self.words[i] | 0;
        b = num.words[j] | 0;
        r = a * b + rword;
        ncarry += (r / 0x4000000) | 0;
        rword = r & 0x3ffffff;
      }
      out.words[k] = rword | 0;
      carry = ncarry | 0;
    }
    if (carry !== 0) {
      out.words[k] = carry | 0;
    } else {
      out.length--;
    }

    return out.strip();
  }

  // TODO(indutny): it may be reasonable to omit it for users who don't need
  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
  // multiplication (like elliptic secp256k1).
  var comb10MulTo = function comb10MulTo (self, num, out) {
    var a = self.words;
    var b = num.words;
    var o = out.words;
    var c = 0;
    var lo;
    var mid;
    var hi;
    var a0 = a[0] | 0;
    var al0 = a0 & 0x1fff;
    var ah0 = a0 >>> 13;
    var a1 = a[1] | 0;
    var al1 = a1 & 0x1fff;
    var ah1 = a1 >>> 13;
    var a2 = a[2] | 0;
    var al2 = a2 & 0x1fff;
    var ah2 = a2 >>> 13;
    var a3 = a[3] | 0;
    var al3 = a3 & 0x1fff;
    var ah3 = a3 >>> 13;
    var a4 = a[4] | 0;
    var al4 = a4 & 0x1fff;
    var ah4 = a4 >>> 13;
    var a5 = a[5] | 0;
    var al5 = a5 & 0x1fff;
    var ah5 = a5 >>> 13;
    var a6 = a[6] | 0;
    var al6 = a6 & 0x1fff;
    var ah6 = a6 >>> 13;
    var a7 = a[7] | 0;
    var al7 = a7 & 0x1fff;
    var ah7 = a7 >>> 13;
    var a8 = a[8] | 0;
    var al8 = a8 & 0x1fff;
    var ah8 = a8 >>> 13;
    var a9 = a[9] | 0;
    var al9 = a9 & 0x1fff;
    var ah9 = a9 >>> 13;
    var b0 = b[0] | 0;
    var bl0 = b0 & 0x1fff;
    var bh0 = b0 >>> 13;
    var b1 = b[1] | 0;
    var bl1 = b1 & 0x1fff;
    var bh1 = b1 >>> 13;
    var b2 = b[2] | 0;
    var bl2 = b2 & 0x1fff;
    var bh2 = b2 >>> 13;
    var b3 = b[3] | 0;
    var bl3 = b3 & 0x1fff;
    var bh3 = b3 >>> 13;
    var b4 = b[4] | 0;
    var bl4 = b4 & 0x1fff;
    var bh4 = b4 >>> 13;
    var b5 = b[5] | 0;
    var bl5 = b5 & 0x1fff;
    var bh5 = b5 >>> 13;
    var b6 = b[6] | 0;
    var bl6 = b6 & 0x1fff;
    var bh6 = b6 >>> 13;
    var b7 = b[7] | 0;
    var bl7 = b7 & 0x1fff;
    var bh7 = b7 >>> 13;
    var b8 = b[8] | 0;
    var bl8 = b8 & 0x1fff;
    var bh8 = b8 >>> 13;
    var b9 = b[9] | 0;
    var bl9 = b9 & 0x1fff;
    var bh9 = b9 >>> 13;

    out.negative = self.negative ^ num.negative;
    out.length = 19;
    /* k = 0 */
    lo = Math.imul(al0, bl0);
    mid = Math.imul(al0, bh0);
    mid = (mid + Math.imul(ah0, bl0)) | 0;
    hi = Math.imul(ah0, bh0);
    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
    w0 &= 0x3ffffff;
    /* k = 1 */
    lo = Math.imul(al1, bl0);
    mid = Math.imul(al1, bh0);
    mid = (mid + Math.imul(ah1, bl0)) | 0;
    hi = Math.imul(ah1, bh0);
    lo = (lo + Math.imul(al0, bl1)) | 0;
    mid = (mid + Math.imul(al0, bh1)) | 0;
    mid = (mid + Math.imul(ah0, bl1)) | 0;
    hi = (hi + Math.imul(ah0, bh1)) | 0;
    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
    w1 &= 0x3ffffff;
    /* k = 2 */
    lo = Math.imul(al2, bl0);
    mid = Math.imul(al2, bh0);
    mid = (mid + Math.imul(ah2, bl0)) | 0;
    hi = Math.imul(ah2, bh0);
    lo = (lo + Math.imul(al1, bl1)) | 0;
    mid = (mid + Math.imul(al1, bh1)) | 0;
    mid = (mid + Math.imul(ah1, bl1)) | 0;
    hi = (hi + Math.imul(ah1, bh1)) | 0;
    lo = (lo + Math.imul(al0, bl2)) | 0;
    mid = (mid + Math.imul(al0, bh2)) | 0;
    mid = (mid + Math.imul(ah0, bl2)) | 0;
    hi = (hi + Math.imul(ah0, bh2)) | 0;
    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
    w2 &= 0x3ffffff;
    /* k = 3 */
    lo = Math.imul(al3, bl0);
    mid = Math.imul(al3, bh0);
    mid = (mid + Math.imul(ah3, bl0)) | 0;
    hi = Math.imul(ah3, bh0);
    lo = (lo + Math.imul(al2, bl1)) | 0;
    mid = (mid + Math.imul(al2, bh1)) | 0;
    mid = (mid + Math.imul(ah2, bl1)) | 0;
    hi = (hi + Math.imul(ah2, bh1)) | 0;
    lo = (lo + Math.imul(al1, bl2)) | 0;
    mid = (mid + Math.imul(al1, bh2)) | 0;
    mid = (mid + Math.imul(ah1, bl2)) | 0;
    hi = (hi + Math.imul(ah1, bh2)) | 0;
    lo = (lo + Math.imul(al0, bl3)) | 0;
    mid = (mid + Math.imul(al0, bh3)) | 0;
    mid = (mid + Math.imul(ah0, bl3)) | 0;
    hi = (hi + Math.imul(ah0, bh3)) | 0;
    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
    w3 &= 0x3ffffff;
    /* k = 4 */
    lo = Math.imul(al4, bl0);
    mid = Math.imul(al4, bh0);
    mid = (mid + Math.imul(ah4, bl0)) | 0;
    hi = Math.imul(ah4, bh0);
    lo = (lo + Math.imul(al3, bl1)) | 0;
    mid = (mid + Math.imul(al3, bh1)) | 0;
    mid = (mid + Math.imul(ah3, bl1)) | 0;
    hi = (hi + Math.imul(ah3, bh1)) | 0;
    lo = (lo + Math.imul(al2, bl2)) | 0;
    mid = (mid + Math.imul(al2, bh2)) | 0;
    mid = (mid + Math.imul(ah2, bl2)) | 0;
    hi = (hi + Math.imul(ah2, bh2)) | 0;
    lo = (lo + Math.imul(al1, bl3)) | 0;
    mid = (mid + Math.imul(al1, bh3)) | 0;
    mid = (mid + Math.imul(ah1, bl3)) | 0;
    hi = (hi + Math.imul(ah1, bh3)) | 0;
    lo = (lo + Math.imul(al0, bl4)) | 0;
    mid = (mid + Math.imul(al0, bh4)) | 0;
    mid = (mid + Math.imul(ah0, bl4)) | 0;
    hi = (hi + Math.imul(ah0, bh4)) | 0;
    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
    w4 &= 0x3ffffff;
    /* k = 5 */
    lo = Math.imul(al5, bl0);
    mid = Math.imul(al5, bh0);
    mid = (mid + Math.imul(ah5, bl0)) | 0;
    hi = Math.imul(ah5, bh0);
    lo = (lo + Math.imul(al4, bl1)) | 0;
    mid = (mid + Math.imul(al4, bh1)) | 0;
    mid = (mid + Math.imul(ah4, bl1)) | 0;
    hi = (hi + Math.imul(ah4, bh1)) | 0;
    lo = (lo + Math.imul(al3, bl2)) | 0;
    mid = (mid + Math.imul(al3, bh2)) | 0;
    mid = (mid + Math.imul(ah3, bl2)) | 0;
    hi = (hi + Math.imul(ah3, bh2)) | 0;
    lo = (lo + Math.imul(al2, bl3)) | 0;
    mid = (mid + Math.imul(al2, bh3)) | 0;
    mid = (mid + Math.imul(ah2, bl3)) | 0;
    hi = (hi + Math.imul(ah2, bh3)) | 0;
    lo = (lo + Math.imul(al1, bl4)) | 0;
    mid = (mid + Math.imul(al1, bh4)) | 0;
    mid = (mid + Math.imul(ah1, bl4)) | 0;
    hi = (hi + Math.imul(ah1, bh4)) | 0;
    lo = (lo + Math.imul(al0, bl5)) | 0;
    mid = (mid + Math.imul(al0, bh5)) | 0;
    mid = (mid + Math.imul(ah0, bl5)) | 0;
    hi = (hi + Math.imul(ah0, bh5)) | 0;
    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
    w5 &= 0x3ffffff;
    /* k = 6 */
    lo = Math.imul(al6, bl0);
    mid = Math.imul(al6, bh0);
    mid = (mid + Math.imul(ah6, bl0)) | 0;
    hi = Math.imul(ah6, bh0);
    lo = (lo + Math.imul(al5, bl1)) | 0;
    mid = (mid + Math.imul(al5, bh1)) | 0;
    mid = (mid + Math.imul(ah5, bl1)) | 0;
    hi = (hi + Math.imul(ah5, bh1)) | 0;
    lo = (lo + Math.imul(al4, bl2)) | 0;
    mid = (mid + Math.imul(al4, bh2)) | 0;
    mid = (mid + Math.imul(ah4, bl2)) | 0;
    hi = (hi + Math.imul(ah4, bh2)) | 0;
    lo = (lo + Math.imul(al3, bl3)) | 0;
    mid = (mid + Math.imul(al3, bh3)) | 0;
    mid = (mid + Math.imul(ah3, bl3)) | 0;
    hi = (hi + Math.imul(ah3, bh3)) | 0;
    lo = (lo + Math.imul(al2, bl4)) | 0;
    mid = (mid + Math.imul(al2, bh4)) | 0;
    mid = (mid + Math.imul(ah2, bl4)) | 0;
    hi = (hi + Math.imul(ah2, bh4)) | 0;
    lo = (lo + Math.imul(al1, bl5)) | 0;
    mid = (mid + Math.imul(al1, bh5)) | 0;
    mid = (mid + Math.imul(ah1, bl5)) | 0;
    hi = (hi + Math.imul(ah1, bh5)) | 0;
    lo = (lo + Math.imul(al0, bl6)) | 0;
    mid = (mid + Math.imul(al0, bh6)) | 0;
    mid = (mid + Math.imul(ah0, bl6)) | 0;
    hi = (hi + Math.imul(ah0, bh6)) | 0;
    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
    w6 &= 0x3ffffff;
    /* k = 7 */
    lo = Math.imul(al7, bl0);
    mid = Math.imul(al7, bh0);
    mid = (mid + Math.imul(ah7, bl0)) | 0;
    hi = Math.imul(ah7, bh0);
    lo = (lo + Math.imul(al6, bl1)) | 0;
    mid = (mid + Math.imul(al6, bh1)) | 0;
    mid = (mid + Math.imul(ah6, bl1)) | 0;
    hi = (hi + Math.imul(ah6, bh1)) | 0;
    lo = (lo + Math.imul(al5, bl2)) | 0;
    mid = (mid + Math.imul(al5, bh2)) | 0;
    mid = (mid + Math.imul(ah5, bl2)) | 0;
    hi = (hi + Math.imul(ah5, bh2)) | 0;
    lo = (lo + Math.imul(al4, bl3)) | 0;
    mid = (mid + Math.imul(al4, bh3)) | 0;
    mid = (mid + Math.imul(ah4, bl3)) | 0;
    hi = (hi + Math.imul(ah4, bh3)) | 0;
    lo = (lo + Math.imul(al3, bl4)) | 0;
    mid = (mid + Math.imul(al3, bh4)) | 0;
    mid = (mid + Math.imul(ah3, bl4)) | 0;
    hi = (hi + Math.imul(ah3, bh4)) | 0;
    lo = (lo + Math.imul(al2, bl5)) | 0;
    mid = (mid + Math.imul(al2, bh5)) | 0;
    mid = (mid + Math.imul(ah2, bl5)) | 0;
    hi = (hi + Math.imul(ah2, bh5)) | 0;
    lo = (lo + Math.imul(al1, bl6)) | 0;
    mid = (mid + Math.imul(al1, bh6)) | 0;
    mid = (mid + Math.imul(ah1, bl6)) | 0;
    hi = (hi + Math.imul(ah1, bh6)) | 0;
    lo = (lo + Math.imul(al0, bl7)) | 0;
    mid = (mid + Math.imul(al0, bh7)) | 0;
    mid = (mid + Math.imul(ah0, bl7)) | 0;
    hi = (hi + Math.imul(ah0, bh7)) | 0;
    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
    w7 &= 0x3ffffff;
    /* k = 8 */
    lo = Math.imul(al8, bl0);
    mid = Math.imul(al8, bh0);
    mid = (mid + Math.imul(ah8, bl0)) | 0;
    hi = Math.imul(ah8, bh0);
    lo = (lo + Math.imul(al7, bl1)) | 0;
    mid = (mid + Math.imul(al7, bh1)) | 0;
    mid = (mid + Math.imul(ah7, bl1)) | 0;
    hi = (hi + Math.imul(ah7, bh1)) | 0;
    lo = (lo + Math.imul(al6, bl2)) | 0;
    mid = (mid + Math.imul(al6, bh2)) | 0;
    mid = (mid + Math.imul(ah6, bl2)) | 0;
    hi = (hi + Math.imul(ah6, bh2)) | 0;
    lo = (lo + Math.imul(al5, bl3)) | 0;
    mid = (mid + Math.imul(al5, bh3)) | 0;
    mid = (mid + Math.imul(ah5, bl3)) | 0;
    hi = (hi + Math.imul(ah5, bh3)) | 0;
    lo = (lo + Math.imul(al4, bl4)) | 0;
    mid = (mid + Math.imul(al4, bh4)) | 0;
    mid = (mid + Math.imul(ah4, bl4)) | 0;
    hi = (hi + Math.imul(ah4, bh4)) | 0;
    lo = (lo + Math.imul(al3, bl5)) | 0;
    mid = (mid + Math.imul(al3, bh5)) | 0;
    mid = (mid + Math.imul(ah3, bl5)) | 0;
    hi = (hi + Math.imul(ah3, bh5)) | 0;
    lo = (lo + Math.imul(al2, bl6)) | 0;
    mid = (mid + Math.imul(al2, bh6)) | 0;
    mid = (mid + Math.imul(ah2, bl6)) | 0;
    hi = (hi + Math.imul(ah2, bh6)) | 0;
    lo = (lo + Math.imul(al1, bl7)) | 0;
    mid = (mid + Math.imul(al1, bh7)) | 0;
    mid = (mid + Math.imul(ah1, bl7)) | 0;
    hi = (hi + Math.imul(ah1, bh7)) | 0;
    lo = (lo + Math.imul(al0, bl8)) | 0;
    mid = (mid + Math.imul(al0, bh8)) | 0;
    mid = (mid + Math.imul(ah0, bl8)) | 0;
    hi = (hi + Math.imul(ah0, bh8)) | 0;
    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
    w8 &= 0x3ffffff;
    /* k = 9 */
    lo = Math.imul(al9, bl0);
    mid = Math.imul(al9, bh0);
    mid = (mid + Math.imul(ah9, bl0)) | 0;
    hi = Math.imul(ah9, bh0);
    lo = (lo + Math.imul(al8, bl1)) | 0;
    mid = (mid + Math.imul(al8, bh1)) | 0;
    mid = (mid + Math.imul(ah8, bl1)) | 0;
    hi = (hi + Math.imul(ah8, bh1)) | 0;
    lo = (lo + Math.imul(al7, bl2)) | 0;
    mid = (mid + Math.imul(al7, bh2)) | 0;
    mid = (mid + Math.imul(ah7, bl2)) | 0;
    hi = (hi + Math.imul(ah7, bh2)) | 0;
    lo = (lo + Math.imul(al6, bl3)) | 0;
    mid = (mid + Math.imul(al6, bh3)) | 0;
    mid = (mid + Math.imul(ah6, bl3)) | 0;
    hi = (hi + Math.imul(ah6, bh3)) | 0;
    lo = (lo + Math.imul(al5, bl4)) | 0;
    mid = (mid + Math.imul(al5, bh4)) | 0;
    mid = (mid + Math.imul(ah5, bl4)) | 0;
    hi = (hi + Math.imul(ah5, bh4)) | 0;
    lo = (lo + Math.imul(al4, bl5)) | 0;
    mid = (mid + Math.imul(al4, bh5)) | 0;
    mid = (mid + Math.imul(ah4, bl5)) | 0;
    hi = (hi + Math.imul(ah4, bh5)) | 0;
    lo = (lo + Math.imul(al3, bl6)) | 0;
    mid = (mid + Math.imul(al3, bh6)) | 0;
    mid = (mid + Math.imul(ah3, bl6)) | 0;
    hi = (hi + Math.imul(ah3, bh6)) | 0;
    lo = (lo + Math.imul(al2, bl7)) | 0;
    mid = (mid + Math.imul(al2, bh7)) | 0;
    mid = (mid + Math.imul(ah2, bl7)) | 0;
    hi = (hi + Math.imul(ah2, bh7)) | 0;
    lo = (lo + Math.imul(al1, bl8)) | 0;
    mid = (mid + Math.imul(al1, bh8)) | 0;
    mid = (mid + Math.imul(ah1, bl8)) | 0;
    hi = (hi + Math.imul(ah1, bh8)) | 0;
    lo = (lo + Math.imul(al0, bl9)) | 0;
    mid = (mid + Math.imul(al0, bh9)) | 0;
    mid = (mid + Math.imul(ah0, bl9)) | 0;
    hi = (hi + Math.imul(ah0, bh9)) | 0;
    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
    w9 &= 0x3ffffff;
    /* k = 10 */
    lo = Math.imul(al9, bl1);
    mid = Math.imul(al9, bh1);
    mid = (mid + Math.imul(ah9, bl1)) | 0;
    hi = Math.imul(ah9, bh1);
    lo = (lo + Math.imul(al8, bl2)) | 0;
    mid = (mid + Math.imul(al8, bh2)) | 0;
    mid = (mid + Math.imul(ah8, bl2)) | 0;
    hi = (hi + Math.imul(ah8, bh2)) | 0;
    lo = (lo + Math.imul(al7, bl3)) | 0;
    mid = (mid + Math.imul(al7, bh3)) | 0;
    mid = (mid + Math.imul(ah7, bl3)) | 0;
    hi = (hi + Math.imul(ah7, bh3)) | 0;
    lo = (lo + Math.imul(al6, bl4)) | 0;
    mid = (mid + Math.imul(al6, bh4)) | 0;
    mid = (mid + Math.imul(ah6, bl4)) | 0;
    hi = (hi + Math.imul(ah6, bh4)) | 0;
    lo = (lo + Math.imul(al5, bl5)) | 0;
    mid = (mid + Math.imul(al5, bh5)) | 0;
    mid = (mid + Math.imul(ah5, bl5)) | 0;
    hi = (hi + Math.imul(ah5, bh5)) | 0;
    lo = (lo + Math.imul(al4, bl6)) | 0;
    mid = (mid + Math.imul(al4, bh6)) | 0;
    mid = (mid + Math.imul(ah4, bl6)) | 0;
    hi = (hi + Math.imul(ah4, bh6)) | 0;
    lo = (lo + Math.imul(al3, bl7)) | 0;
    mid = (mid + Math.imul(al3, bh7)) | 0;
    mid = (mid + Math.imul(ah3, bl7)) | 0;
    hi = (hi + Math.imul(ah3, bh7)) | 0;
    lo = (lo + Math.imul(al2, bl8)) | 0;
    mid = (mid + Math.imul(al2, bh8)) | 0;
    mid = (mid + Math.imul(ah2, bl8)) | 0;
    hi = (hi + Math.imul(ah2, bh8)) | 0;
    lo = (lo + Math.imul(al1, bl9)) | 0;
    mid = (mid + Math.imul(al1, bh9)) | 0;
    mid = (mid + Math.imul(ah1, bl9)) | 0;
    hi = (hi + Math.imul(ah1, bh9)) | 0;
    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
    w10 &= 0x3ffffff;
    /* k = 11 */
    lo = Math.imul(al9, bl2);
    mid = Math.imul(al9, bh2);
    mid = (mid + Math.imul(ah9, bl2)) | 0;
    hi = Math.imul(ah9, bh2);
    lo = (lo + Math.imul(al8, bl3)) | 0;
    mid = (mid + Math.imul(al8, bh3)) | 0;
    mid = (mid + Math.imul(ah8, bl3)) | 0;
    hi = (hi + Math.imul(ah8, bh3)) | 0;
    lo = (lo + Math.imul(al7, bl4)) | 0;
    mid = (mid + Math.imul(al7, bh4)) | 0;
    mid = (mid + Math.imul(ah7, bl4)) | 0;
    hi = (hi + Math.imul(ah7, bh4)) | 0;
    lo = (lo + Math.imul(al6, bl5)) | 0;
    mid = (mid + Math.imul(al6, bh5)) | 0;
    mid = (mid + Math.imul(ah6, bl5)) | 0;
    hi = (hi + Math.imul(ah6, bh5)) | 0;
    lo = (lo + Math.imul(al5, bl6)) | 0;
    mid = (mid + Math.imul(al5, bh6)) | 0;
    mid = (mid + Math.imul(ah5, bl6)) | 0;
    hi = (hi + Math.imul(ah5, bh6)) | 0;
    lo = (lo + Math.imul(al4, bl7)) | 0;
    mid = (mid + Math.imul(al4, bh7)) | 0;
    mid = (mid + Math.imul(ah4, bl7)) | 0;
    hi = (hi + Math.imul(ah4, bh7)) | 0;
    lo = (lo + Math.imul(al3, bl8)) | 0;
    mid = (mid + Math.imul(al3, bh8)) | 0;
    mid = (mid + Math.imul(ah3, bl8)) | 0;
    hi = (hi + Math.imul(ah3, bh8)) | 0;
    lo = (lo + Math.imul(al2, bl9)) | 0;
    mid = (mid + Math.imul(al2, bh9)) | 0;
    mid = (mid + Math.imul(ah2, bl9)) | 0;
    hi = (hi + Math.imul(ah2, bh9)) | 0;
    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
    w11 &= 0x3ffffff;
    /* k = 12 */
    lo = Math.imul(al9, bl3);
    mid = Math.imul(al9, bh3);
    mid = (mid + Math.imul(ah9, bl3)) | 0;
    hi = Math.imul(ah9, bh3);
    lo = (lo + Math.imul(al8, bl4)) | 0;
    mid = (mid + Math.imul(al8, bh4)) | 0;
    mid = (mid + Math.imul(ah8, bl4)) | 0;
    hi = (hi + Math.imul(ah8, bh4)) | 0;
    lo = (lo + Math.imul(al7, bl5)) | 0;
    mid = (mid + Math.imul(al7, bh5)) | 0;
    mid = (mid + Math.imul(ah7, bl5)) | 0;
    hi = (hi + Math.imul(ah7, bh5)) | 0;
    lo = (lo + Math.imul(al6, bl6)) | 0;
    mid = (mid + Math.imul(al6, bh6)) | 0;
    mid = (mid + Math.imul(ah6, bl6)) | 0;
    hi = (hi + Math.imul(ah6, bh6)) | 0;
    lo = (lo + Math.imul(al5, bl7)) | 0;
    mid = (mid + Math.imul(al5, bh7)) | 0;
    mid = (mid + Math.imul(ah5, bl7)) | 0;
    hi = (hi + Math.imul(ah5, bh7)) | 0;
    lo = (lo + Math.imul(al4, bl8)) | 0;
    mid = (mid + Math.imul(al4, bh8)) | 0;
    mid = (mid + Math.imul(ah4, bl8)) | 0;
    hi = (hi + Math.imul(ah4, bh8)) | 0;
    lo = (lo + Math.imul(al3, bl9)) | 0;
    mid = (mid + Math.imul(al3, bh9)) | 0;
    mid = (mid + Math.imul(ah3, bl9)) | 0;
    hi = (hi + Math.imul(ah3, bh9)) | 0;
    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
    w12 &= 0x3ffffff;
    /* k = 13 */
    lo = Math.imul(al9, bl4);
    mid = Math.imul(al9, bh4);
    mid = (mid + Math.imul(ah9, bl4)) | 0;
    hi = Math.imul(ah9, bh4);
    lo = (lo + Math.imul(al8, bl5)) | 0;
    mid = (mid + Math.imul(al8, bh5)) | 0;
    mid = (mid + Math.imul(ah8, bl5)) | 0;
    hi = (hi + Math.imul(ah8, bh5)) | 0;
    lo = (lo + Math.imul(al7, bl6)) | 0;
    mid = (mid + Math.imul(al7, bh6)) | 0;
    mid = (mid + Math.imul(ah7, bl6)) | 0;
    hi = (hi + Math.imul(ah7, bh6)) | 0;
    lo = (lo + Math.imul(al6, bl7)) | 0;
    mid = (mid + Math.imul(al6, bh7)) | 0;
    mid = (mid + Math.imul(ah6, bl7)) | 0;
    hi = (hi + Math.imul(ah6, bh7)) | 0;
    lo = (lo + Math.imul(al5, bl8)) | 0;
    mid = (mid + Math.imul(al5, bh8)) | 0;
    mid = (mid + Math.imul(ah5, bl8)) | 0;
    hi = (hi + Math.imul(ah5, bh8)) | 0;
    lo = (lo + Math.imul(al4, bl9)) | 0;
    mid = (mid + Math.imul(al4, bh9)) | 0;
    mid = (mid + Math.imul(ah4, bl9)) | 0;
    hi = (hi + Math.imul(ah4, bh9)) | 0;
    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
    w13 &= 0x3ffffff;
    /* k = 14 */
    lo = Math.imul(al9, bl5);
    mid = Math.imul(al9, bh5);
    mid = (mid + Math.imul(ah9, bl5)) | 0;
    hi = Math.imul(ah9, bh5);
    lo = (lo + Math.imul(al8, bl6)) | 0;
    mid = (mid + Math.imul(al8, bh6)) | 0;
    mid = (mid + Math.imul(ah8, bl6)) | 0;
    hi = (hi + Math.imul(ah8, bh6)) | 0;
    lo = (lo + Math.imul(al7, bl7)) | 0;
    mid = (mid + Math.imul(al7, bh7)) | 0;
    mid = (mid + Math.imul(ah7, bl7)) | 0;
    hi = (hi + Math.imul(ah7, bh7)) | 0;
    lo = (lo + Math.imul(al6, bl8)) | 0;
    mid = (mid + Math.imul(al6, bh8)) | 0;
    mid = (mid + Math.imul(ah6, bl8)) | 0;
    hi = (hi + Math.imul(ah6, bh8)) | 0;
    lo = (lo + Math.imul(al5, bl9)) | 0;
    mid = (mid + Math.imul(al5, bh9)) | 0;
    mid = (mid + Math.imul(ah5, bl9)) | 0;
    hi = (hi + Math.imul(ah5, bh9)) | 0;
    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
    w14 &= 0x3ffffff;
    /* k = 15 */
    lo = Math.imul(al9, bl6);
    mid = Math.imul(al9, bh6);
    mid = (mid + Math.imul(ah9, bl6)) | 0;
    hi = Math.imul(ah9, bh6);
    lo = (lo + Math.imul(al8, bl7)) | 0;
    mid = (mid + Math.imul(al8, bh7)) | 0;
    mid = (mid + Math.imul(ah8, bl7)) | 0;
    hi = (hi + Math.imul(ah8, bh7)) | 0;
    lo = (lo + Math.imul(al7, bl8)) | 0;
    mid = (mid + Math.imul(al7, bh8)) | 0;
    mid = (mid + Math.imul(ah7, bl8)) | 0;
    hi = (hi + Math.imul(ah7, bh8)) | 0;
    lo = (lo + Math.imul(al6, bl9)) | 0;
    mid = (mid + Math.imul(al6, bh9)) | 0;
    mid = (mid + Math.imul(ah6, bl9)) | 0;
    hi = (hi + Math.imul(ah6, bh9)) | 0;
    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
    w15 &= 0x3ffffff;
    /* k = 16 */
    lo = Math.imul(al9, bl7);
    mid = Math.imul(al9, bh7);
    mid = (mid + Math.imul(ah9, bl7)) | 0;
    hi = Math.imul(ah9, bh7);
    lo = (lo + Math.imul(al8, bl8)) | 0;
    mid = (mid + Math.imul(al8, bh8)) | 0;
    mid = (mid + Math.imul(ah8, bl8)) | 0;
    hi = (hi + Math.imul(ah8, bh8)) | 0;
    lo = (lo + Math.imul(al7, bl9)) | 0;
    mid = (mid + Math.imul(al7, bh9)) | 0;
    mid = (mid + Math.imul(ah7, bl9)) | 0;
    hi = (hi + Math.imul(ah7, bh9)) | 0;
    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
    w16 &= 0x3ffffff;
    /* k = 17 */
    lo = Math.imul(al9, bl8);
    mid = Math.imul(al9, bh8);
    mid = (mid + Math.imul(ah9, bl8)) | 0;
    hi = Math.imul(ah9, bh8);
    lo = (lo + Math.imul(al8, bl9)) | 0;
    mid = (mid + Math.imul(al8, bh9)) | 0;
    mid = (mid + Math.imul(ah8, bl9)) | 0;
    hi = (hi + Math.imul(ah8, bh9)) | 0;
    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
    w17 &= 0x3ffffff;
    /* k = 18 */
    lo = Math.imul(al9, bl9);
    mid = Math.imul(al9, bh9);
    mid = (mid + Math.imul(ah9, bl9)) | 0;
    hi = Math.imul(ah9, bh9);
    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
    w18 &= 0x3ffffff;
    o[0] = w0;
    o[1] = w1;
    o[2] = w2;
    o[3] = w3;
    o[4] = w4;
    o[5] = w5;
    o[6] = w6;
    o[7] = w7;
    o[8] = w8;
    o[9] = w9;
    o[10] = w10;
    o[11] = w11;
    o[12] = w12;
    o[13] = w13;
    o[14] = w14;
    o[15] = w15;
    o[16] = w16;
    o[17] = w17;
    o[18] = w18;
    if (c !== 0) {
      o[19] = c;
      out.length++;
    }
    return out;
  };

  // Polyfill comb
  if (!Math.imul) {
    comb10MulTo = smallMulTo;
  }

  function bigMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    out.length = self.length + num.length;

    var carry = 0;
    var hncarry = 0;
    for (var k = 0; k < out.length - 1; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = hncarry;
      hncarry = 0;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = k - j;
        var a = self.words[i] | 0;
        var b = num.words[j] | 0;
        var r = a * b;

        var lo = r & 0x3ffffff;
        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
        lo = (lo + rword) | 0;
        rword = lo & 0x3ffffff;
        ncarry = (ncarry + (lo >>> 26)) | 0;

        hncarry += ncarry >>> 26;
        ncarry &= 0x3ffffff;
      }
      out.words[k] = rword;
      carry = ncarry;
      ncarry = hncarry;
    }
    if (carry !== 0) {
      out.words[k] = carry;
    } else {
      out.length--;
    }

    return out.strip();
  }

  function jumboMulTo (self, num, out) {
    var fftm = new FFTM();
    return fftm.mulp(self, num, out);
  }

  BN.prototype.mulTo = function mulTo (num, out) {
    var res;
    var len = this.length + num.length;
    if (this.length === 10 && num.length === 10) {
      res = comb10MulTo(this, num, out);
    } else if (len < 63) {
      res = smallMulTo(this, num, out);
    } else if (len < 1024) {
      res = bigMulTo(this, num, out);
    } else {
      res = jumboMulTo(this, num, out);
    }

    return res;
  };

  // Cooley-Tukey algorithm for FFT
  // slightly revisited to rely on looping instead of recursion

  function FFTM (x, y) {
    this.x = x;
    this.y = y;
  }

  FFTM.prototype.makeRBT = function makeRBT (N) {
    var t = new Array(N);
    var l = BN.prototype._countBits(N) - 1;
    for (var i = 0; i < N; i++) {
      t[i] = this.revBin(i, l, N);
    }

    return t;
  };

  // Returns binary-reversed representation of `x`
  FFTM.prototype.revBin = function revBin (x, l, N) {
    if (x === 0 || x === N - 1) return x;

    var rb = 0;
    for (var i = 0; i < l; i++) {
      rb |= (x & 1) << (l - i - 1);
      x >>= 1;
    }

    return rb;
  };

  // Performs "tweedling" phase, therefore 'emulating'
  // behaviour of the recursive algorithm
  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
    for (var i = 0; i < N; i++) {
      rtws[i] = rws[rbt[i]];
      itws[i] = iws[rbt[i]];
    }
  };

  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
    this.permute(rbt, rws, iws, rtws, itws, N);

    for (var s = 1; s < N; s <<= 1) {
      var l = s << 1;

      var rtwdf = Math.cos(2 * Math.PI / l);
      var itwdf = Math.sin(2 * Math.PI / l);

      for (var p = 0; p < N; p += l) {
        var rtwdf_ = rtwdf;
        var itwdf_ = itwdf;

        for (var j = 0; j < s; j++) {
          var re = rtws[p + j];
          var ie = itws[p + j];

          var ro = rtws[p + j + s];
          var io = itws[p + j + s];

          var rx = rtwdf_ * ro - itwdf_ * io;

          io = rtwdf_ * io + itwdf_ * ro;
          ro = rx;

          rtws[p + j] = re + ro;
          itws[p + j] = ie + io;

          rtws[p + j + s] = re - ro;
          itws[p + j + s] = ie - io;

          /* jshint maxdepth : false */
          if (j !== l) {
            rx = rtwdf * rtwdf_ - itwdf * itwdf_;

            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
            rtwdf_ = rx;
          }
        }
      }
    }
  };

  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
    var N = Math.max(m, n) | 1;
    var odd = N & 1;
    var i = 0;
    for (N = N / 2 | 0; N; N = N >>> 1) {
      i++;
    }

    return 1 << i + 1 + odd;
  };

  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
    if (N <= 1) return;

    for (var i = 0; i < N / 2; i++) {
      var t = rws[i];

      rws[i] = rws[N - i - 1];
      rws[N - i - 1] = t;

      t = iws[i];

      iws[i] = -iws[N - i - 1];
      iws[N - i - 1] = -t;
    }
  };

  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
    var carry = 0;
    for (var i = 0; i < N / 2; i++) {
      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
        Math.round(ws[2 * i] / N) +
        carry;

      ws[i] = w & 0x3ffffff;

      if (w < 0x4000000) {
        carry = 0;
      } else {
        carry = w / 0x4000000 | 0;
      }
    }

    return ws;
  };

  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
    var carry = 0;
    for (var i = 0; i < len; i++) {
      carry = carry + (ws[i] | 0);

      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
    }

    // Pad with zeroes
    for (i = 2 * len; i < N; ++i) {
      rws[i] = 0;
    }

    assert(carry === 0);
    assert((carry & ~0x1fff) === 0);
  };

  FFTM.prototype.stub = function stub (N) {
    var ph = new Array(N);
    for (var i = 0; i < N; i++) {
      ph[i] = 0;
    }

    return ph;
  };

  FFTM.prototype.mulp = function mulp (x, y, out) {
    var N = 2 * this.guessLen13b(x.length, y.length);

    var rbt = this.makeRBT(N);

    var _ = this.stub(N);

    var rws = new Array(N);
    var rwst = new Array(N);
    var iwst = new Array(N);

    var nrws = new Array(N);
    var nrwst = new Array(N);
    var niwst = new Array(N);

    var rmws = out.words;
    rmws.length = N;

    this.convert13b(x.words, x.length, rws, N);
    this.convert13b(y.words, y.length, nrws, N);

    this.transform(rws, _, rwst, iwst, N, rbt);
    this.transform(nrws, _, nrwst, niwst, N, rbt);

    for (var i = 0; i < N; i++) {
      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
      rwst[i] = rx;
    }

    this.conjugate(rwst, iwst, N);
    this.transform(rwst, iwst, rmws, _, N, rbt);
    this.conjugate(rmws, _, N);
    this.normalize13b(rmws, N);

    out.negative = x.negative ^ y.negative;
    out.length = x.length + y.length;
    return out.strip();
  };

  // Multiply `this` by `num`
  BN.prototype.mul = function mul (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return this.mulTo(num, out);
  };

  // Multiply employing FFT
  BN.prototype.mulf = function mulf (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return jumboMulTo(this, num, out);
  };

  // In-place Multiplication
  BN.prototype.imul = function imul (num) {
    return this.clone().mulTo(num, this);
  };

  BN.prototype.imuln = function imuln (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);

    // Carry
    var carry = 0;
    for (var i = 0; i < this.length; i++) {
      var w = (this.words[i] | 0) * num;
      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
      carry >>= 26;
      carry += (w / 0x4000000) | 0;
      // NOTE: lo is 27bit maximum
      carry += lo >>> 26;
      this.words[i] = lo & 0x3ffffff;
    }

    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }

    return this;
  };

  BN.prototype.muln = function muln (num) {
    return this.clone().imuln(num);
  };

  // `this` * `this`
  BN.prototype.sqr = function sqr () {
    return this.mul(this);
  };

  // `this` * `this` in-place
  BN.prototype.isqr = function isqr () {
    return this.imul(this.clone());
  };

  // Math.pow(`this`, `num`)
  BN.prototype.pow = function pow (num) {
    var w = toBitArray(num);
    if (w.length === 0) return new BN(1);

    // Skip leading zeroes
    var res = this;
    for (var i = 0; i < w.length; i++, res = res.sqr()) {
      if (w[i] !== 0) break;
    }

    if (++i < w.length) {
      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
        if (w[i] === 0) continue;

        res = res.mul(q);
      }
    }

    return res;
  };

  // Shift-left in-place
  BN.prototype.iushln = function iushln (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;
    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
    var i;

    if (r !== 0) {
      var carry = 0;

      for (i = 0; i < this.length; i++) {
        var newCarry = this.words[i] & carryMask;
        var c = ((this.words[i] | 0) - newCarry) << r;
        this.words[i] = c | carry;
        carry = newCarry >>> (26 - r);
      }

      if (carry) {
        this.words[i] = carry;
        this.length++;
      }
    }

    if (s !== 0) {
      for (i = this.length - 1; i >= 0; i--) {
        this.words[i + s] = this.words[i];
      }

      for (i = 0; i < s; i++) {
        this.words[i] = 0;
      }

      this.length += s;
    }

    return this.strip();
  };

  BN.prototype.ishln = function ishln (bits) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushln(bits);
  };

  // Shift-right in-place
  // NOTE: `hint` is a lowest bit before trailing zeroes
  // NOTE: if `extended` is present - it will be filled with destroyed bits
  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
    assert(typeof bits === 'number' && bits >= 0);
    var h;
    if (hint) {
      h = (hint - (hint % 26)) / 26;
    } else {
      h = 0;
    }

    var r = bits % 26;
    var s = Math.min((bits - r) / 26, this.length);
    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
    var maskedWords = extended;

    h -= s;
    h = Math.max(0, h);

    // Extended mode, copy masked part
    if (maskedWords) {
      for (var i = 0; i < s; i++) {
        maskedWords.words[i] = this.words[i];
      }
      maskedWords.length = s;
    }

    if (s === 0) {
      // No-op, we should not move anything at all
    } else if (this.length > s) {
      this.length -= s;
      for (i = 0; i < this.length; i++) {
        this.words[i] = this.words[i + s];
      }
    } else {
      this.words[0] = 0;
      this.length = 1;
    }

    var carry = 0;
    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
      var word = this.words[i] | 0;
      this.words[i] = (carry << (26 - r)) | (word >>> r);
      carry = word & mask;
    }

    // Push carried bits as a mask
    if (maskedWords && carry !== 0) {
      maskedWords.words[maskedWords.length++] = carry;
    }

    if (this.length === 0) {
      this.words[0] = 0;
      this.length = 1;
    }

    return this.strip();
  };

  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushrn(bits, hint, extended);
  };

  // Shift-left
  BN.prototype.shln = function shln (bits) {
    return this.clone().ishln(bits);
  };

  BN.prototype.ushln = function ushln (bits) {
    return this.clone().iushln(bits);
  };

  // Shift-right
  BN.prototype.shrn = function shrn (bits) {
    return this.clone().ishrn(bits);
  };

  BN.prototype.ushrn = function ushrn (bits) {
    return this.clone().iushrn(bits);
  };

  // Test if n bit is set
  BN.prototype.testn = function testn (bit) {
    assert(typeof bit === 'number' && bit >= 0);
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) return false;

    // Check bit and return
    var w = this.words[s];

    return !!(w & q);
  };

  // Return only lowers bits of number (in-place)
  BN.prototype.imaskn = function imaskn (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;

    assert(this.negative === 0, 'imaskn works only with positive numbers');

    if (this.length <= s) {
      return this;
    }

    if (r !== 0) {
      s++;
    }
    this.length = Math.min(s, this.length);

    if (r !== 0) {
      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
      this.words[this.length - 1] &= mask;
    }

    return this.strip();
  };

  // Return only lowers bits of number
  BN.prototype.maskn = function maskn (bits) {
    return this.clone().imaskn(bits);
  };

  // Add plain number `num` to `this`
  BN.prototype.iaddn = function iaddn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.isubn(-num);

    // Possible sign change
    if (this.negative !== 0) {
      if (this.length === 1 && (this.words[0] | 0) < num) {
        this.words[0] = num - (this.words[0] | 0);
        this.negative = 0;
        return this;
      }

      this.negative = 0;
      this.isubn(num);
      this.negative = 1;
      return this;
    }

    // Add without checks
    return this._iaddn(num);
  };

  BN.prototype._iaddn = function _iaddn (num) {
    this.words[0] += num;

    // Carry
    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
      this.words[i] -= 0x4000000;
      if (i === this.length - 1) {
        this.words[i + 1] = 1;
      } else {
        this.words[i + 1]++;
      }
    }
    this.length = Math.max(this.length, i + 1);

    return this;
  };

  // Subtract plain number `num` from `this`
  BN.prototype.isubn = function isubn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.iaddn(-num);

    if (this.negative !== 0) {
      this.negative = 0;
      this.iaddn(num);
      this.negative = 1;
      return this;
    }

    this.words[0] -= num;

    if (this.length === 1 && this.words[0] < 0) {
      this.words[0] = -this.words[0];
      this.negative = 1;
    } else {
      // Carry
      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
        this.words[i] += 0x4000000;
        this.words[i + 1] -= 1;
      }
    }

    return this.strip();
  };

  BN.prototype.addn = function addn (num) {
    return this.clone().iaddn(num);
  };

  BN.prototype.subn = function subn (num) {
    return this.clone().isubn(num);
  };

  BN.prototype.iabs = function iabs () {
    this.negative = 0;

    return this;
  };

  BN.prototype.abs = function abs () {
    return this.clone().iabs();
  };

  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
    var len = num.length + shift;
    var i;

    this._expand(len);

    var w;
    var carry = 0;
    for (i = 0; i < num.length; i++) {
      w = (this.words[i + shift] | 0) + carry;
      var right = (num.words[i] | 0) * mul;
      w -= right & 0x3ffffff;
      carry = (w >> 26) - ((right / 0x4000000) | 0);
      this.words[i + shift] = w & 0x3ffffff;
    }
    for (; i < this.length - shift; i++) {
      w = (this.words[i + shift] | 0) + carry;
      carry = w >> 26;
      this.words[i + shift] = w & 0x3ffffff;
    }

    if (carry === 0) return this.strip();

    // Subtraction overflow
    assert(carry === -1);
    carry = 0;
    for (i = 0; i < this.length; i++) {
      w = -(this.words[i] | 0) + carry;
      carry = w >> 26;
      this.words[i] = w & 0x3ffffff;
    }
    this.negative = 1;

    return this.strip();
  };

  BN.prototype._wordDiv = function _wordDiv (num, mode) {
    var shift = this.length - num.length;

    var a = this.clone();
    var b = num;

    // Normalize
    var bhi = b.words[b.length - 1] | 0;
    var bhiBits = this._countBits(bhi);
    shift = 26 - bhiBits;
    if (shift !== 0) {
      b = b.ushln(shift);
      a.iushln(shift);
      bhi = b.words[b.length - 1] | 0;
    }

    // Initialize quotient
    var m = a.length - b.length;
    var q;

    if (mode !== 'mod') {
      q = new BN(null);
      q.length = m + 1;
      q.words = new Array(q.length);
      for (var i = 0; i < q.length; i++) {
        q.words[i] = 0;
      }
    }

    var diff = a.clone()._ishlnsubmul(b, 1, m);
    if (diff.negative === 0) {
      a = diff;
      if (q) {
        q.words[m] = 1;
      }
    }

    for (var j = m - 1; j >= 0; j--) {
      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
        (a.words[b.length + j - 1] | 0);

      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
      // (0x7ffffff)
      qj = Math.min((qj / bhi) | 0, 0x3ffffff);

      a._ishlnsubmul(b, qj, j);
      while (a.negative !== 0) {
        qj--;
        a.negative = 0;
        a._ishlnsubmul(b, 1, j);
        if (!a.isZero()) {
          a.negative ^= 1;
        }
      }
      if (q) {
        q.words[j] = qj;
      }
    }
    if (q) {
      q.strip();
    }
    a.strip();

    // Denormalize
    if (mode !== 'div' && shift !== 0) {
      a.iushrn(shift);
    }

    return {
      div: q || null,
      mod: a
    };
  };

  // NOTE: 1) `mode` can be set to `mod` to request mod only,
  //       to `div` to request div only, or be absent to
  //       request both div & mod
  //       2) `positive` is true if unsigned mod is requested
  BN.prototype.divmod = function divmod (num, mode, positive) {
    assert(!num.isZero());

    if (this.isZero()) {
      return {
        div: new BN(0),
        mod: new BN(0)
      };
    }

    var div, mod, res;
    if (this.negative !== 0 && num.negative === 0) {
      res = this.neg().divmod(num, mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.iadd(num);
        }
      }

      return {
        div: div,
        mod: mod
      };
    }

    if (this.negative === 0 && num.negative !== 0) {
      res = this.divmod(num.neg(), mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      return {
        div: div,
        mod: res.mod
      };
    }

    if ((this.negative & num.negative) !== 0) {
      res = this.neg().divmod(num.neg(), mode);

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.isub(num);
        }
      }

      return {
        div: res.div,
        mod: mod
      };
    }

    // Both numbers are positive at this point

    // Strip both numbers to approximate shift value
    if (num.length > this.length || this.cmp(num) < 0) {
      return {
        div: new BN(0),
        mod: this
      };
    }

    // Very short reduction
    if (num.length === 1) {
      if (mode === 'div') {
        return {
          div: this.divn(num.words[0]),
          mod: null
        };
      }

      if (mode === 'mod') {
        return {
          div: null,
          mod: new BN(this.modn(num.words[0]))
        };
      }

      return {
        div: this.divn(num.words[0]),
        mod: new BN(this.modn(num.words[0]))
      };
    }

    return this._wordDiv(num, mode);
  };

  // Find `this` / `num`
  BN.prototype.div = function div (num) {
    return this.divmod(num, 'div', false).div;
  };

  // Find `this` % `num`
  BN.prototype.mod = function mod (num) {
    return this.divmod(num, 'mod', false).mod;
  };

  BN.prototype.umod = function umod (num) {
    return this.divmod(num, 'mod', true).mod;
  };

  // Find Round(`this` / `num`)
  BN.prototype.divRound = function divRound (num) {
    var dm = this.divmod(num);

    // Fast case - exact division
    if (dm.mod.isZero()) return dm.div;

    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;

    var half = num.ushrn(1);
    var r2 = num.andln(1);
    var cmp = mod.cmp(half);

    // Round down
    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;

    // Round up
    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
  };

  BN.prototype.modn = function modn (num) {
    assert(num <= 0x3ffffff);
    var p = (1 << 26) % num;

    var acc = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      acc = (p * acc + (this.words[i] | 0)) % num;
    }

    return acc;
  };

  // In-place division by number
  BN.prototype.idivn = function idivn (num) {
    assert(num <= 0x3ffffff);

    var carry = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var w = (this.words[i] | 0) + carry * 0x4000000;
      this.words[i] = (w / num) | 0;
      carry = w % num;
    }

    return this.strip();
  };

  BN.prototype.divn = function divn (num) {
    return this.clone().idivn(num);
  };

  BN.prototype.egcd = function egcd (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var x = this;
    var y = p.clone();

    if (x.negative !== 0) {
      x = x.umod(p);
    } else {
      x = x.clone();
    }

    // A * x + B * y = x
    var A = new BN(1);
    var B = new BN(0);

    // C * x + D * y = y
    var C = new BN(0);
    var D = new BN(1);

    var g = 0;

    while (x.isEven() && y.isEven()) {
      x.iushrn(1);
      y.iushrn(1);
      ++g;
    }

    var yp = y.clone();
    var xp = x.clone();

    while (!x.isZero()) {
      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        x.iushrn(i);
        while (i-- > 0) {
          if (A.isOdd() || B.isOdd()) {
            A.iadd(yp);
            B.isub(xp);
          }

          A.iushrn(1);
          B.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        y.iushrn(j);
        while (j-- > 0) {
          if (C.isOdd() || D.isOdd()) {
            C.iadd(yp);
            D.isub(xp);
          }

          C.iushrn(1);
          D.iushrn(1);
        }
      }

      if (x.cmp(y) >= 0) {
        x.isub(y);
        A.isub(C);
        B.isub(D);
      } else {
        y.isub(x);
        C.isub(A);
        D.isub(B);
      }
    }

    return {
      a: C,
      b: D,
      gcd: y.iushln(g)
    };
  };

  // This is reduced incarnation of the binary EEA
  // above, designated to invert members of the
  // _prime_ fields F(p) at a maximal speed
  BN.prototype._invmp = function _invmp (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var a = this;
    var b = p.clone();

    if (a.negative !== 0) {
      a = a.umod(p);
    } else {
      a = a.clone();
    }

    var x1 = new BN(1);
    var x2 = new BN(0);

    var delta = b.clone();

    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        a.iushrn(i);
        while (i-- > 0) {
          if (x1.isOdd()) {
            x1.iadd(delta);
          }

          x1.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        b.iushrn(j);
        while (j-- > 0) {
          if (x2.isOdd()) {
            x2.iadd(delta);
          }

          x2.iushrn(1);
        }
      }

      if (a.cmp(b) >= 0) {
        a.isub(b);
        x1.isub(x2);
      } else {
        b.isub(a);
        x2.isub(x1);
      }
    }

    var res;
    if (a.cmpn(1) === 0) {
      res = x1;
    } else {
      res = x2;
    }

    if (res.cmpn(0) < 0) {
      res.iadd(p);
    }

    return res;
  };

  BN.prototype.gcd = function gcd (num) {
    if (this.isZero()) return num.abs();
    if (num.isZero()) return this.abs();

    var a = this.clone();
    var b = num.clone();
    a.negative = 0;
    b.negative = 0;

    // Remove common factor of two
    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
      a.iushrn(1);
      b.iushrn(1);
    }

    do {
      while (a.isEven()) {
        a.iushrn(1);
      }
      while (b.isEven()) {
        b.iushrn(1);
      }

      var r = a.cmp(b);
      if (r < 0) {
        // Swap `a` and `b` to make `a` always bigger than `b`
        var t = a;
        a = b;
        b = t;
      } else if (r === 0 || b.cmpn(1) === 0) {
        break;
      }

      a.isub(b);
    } while (true);

    return b.iushln(shift);
  };

  // Invert number in the field F(num)
  BN.prototype.invm = function invm (num) {
    return this.egcd(num).a.umod(num);
  };

  BN.prototype.isEven = function isEven () {
    return (this.words[0] & 1) === 0;
  };

  BN.prototype.isOdd = function isOdd () {
    return (this.words[0] & 1) === 1;
  };

  // And first word and num
  BN.prototype.andln = function andln (num) {
    return this.words[0] & num;
  };

  // Increment at the bit position in-line
  BN.prototype.bincn = function bincn (bit) {
    assert(typeof bit === 'number');
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) {
      this._expand(s + 1);
      this.words[s] |= q;
      return this;
    }

    // Add bit and propagate, if needed
    var carry = q;
    for (var i = s; carry !== 0 && i < this.length; i++) {
      var w = this.words[i] | 0;
      w += carry;
      carry = w >>> 26;
      w &= 0x3ffffff;
      this.words[i] = w;
    }
    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }
    return this;
  };

  BN.prototype.isZero = function isZero () {
    return this.length === 1 && this.words[0] === 0;
  };

  BN.prototype.cmpn = function cmpn (num) {
    var negative = num < 0;

    if (this.negative !== 0 && !negative) return -1;
    if (this.negative === 0 && negative) return 1;

    this.strip();

    var res;
    if (this.length > 1) {
      res = 1;
    } else {
      if (negative) {
        num = -num;
      }

      assert(num <= 0x3ffffff, 'Number is too big');

      var w = this.words[0] | 0;
      res = w === num ? 0 : w < num ? -1 : 1;
    }
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Compare two numbers and return:
  // 1 - if `this` > `num`
  // 0 - if `this` == `num`
  // -1 - if `this` < `num`
  BN.prototype.cmp = function cmp (num) {
    if (this.negative !== 0 && num.negative === 0) return -1;
    if (this.negative === 0 && num.negative !== 0) return 1;

    var res = this.ucmp(num);
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Unsigned comparison
  BN.prototype.ucmp = function ucmp (num) {
    // At this point both numbers have the same sign
    if (this.length > num.length) return 1;
    if (this.length < num.length) return -1;

    var res = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var a = this.words[i] | 0;
      var b = num.words[i] | 0;

      if (a === b) continue;
      if (a < b) {
        res = -1;
      } else if (a > b) {
        res = 1;
      }
      break;
    }
    return res;
  };

  BN.prototype.gtn = function gtn (num) {
    return this.cmpn(num) === 1;
  };

  BN.prototype.gt = function gt (num) {
    return this.cmp(num) === 1;
  };

  BN.prototype.gten = function gten (num) {
    return this.cmpn(num) >= 0;
  };

  BN.prototype.gte = function gte (num) {
    return this.cmp(num) >= 0;
  };

  BN.prototype.ltn = function ltn (num) {
    return this.cmpn(num) === -1;
  };

  BN.prototype.lt = function lt (num) {
    return this.cmp(num) === -1;
  };

  BN.prototype.lten = function lten (num) {
    return this.cmpn(num) <= 0;
  };

  BN.prototype.lte = function lte (num) {
    return this.cmp(num) <= 0;
  };

  BN.prototype.eqn = function eqn (num) {
    return this.cmpn(num) === 0;
  };

  BN.prototype.eq = function eq (num) {
    return this.cmp(num) === 0;
  };

  //
  // A reduce context, could be using montgomery or something better, depending
  // on the `m` itself.
  //
  BN.red = function red (num) {
    return new Red(num);
  };

  BN.prototype.toRed = function toRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    assert(this.negative === 0, 'red works only with positives');
    return ctx.convertTo(this)._forceRed(ctx);
  };

  BN.prototype.fromRed = function fromRed () {
    assert(this.red, 'fromRed works only with numbers in reduction context');
    return this.red.convertFrom(this);
  };

  BN.prototype._forceRed = function _forceRed (ctx) {
    this.red = ctx;
    return this;
  };

  BN.prototype.forceRed = function forceRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    return this._forceRed(ctx);
  };

  BN.prototype.redAdd = function redAdd (num) {
    assert(this.red, 'redAdd works only with red numbers');
    return this.red.add(this, num);
  };

  BN.prototype.redIAdd = function redIAdd (num) {
    assert(this.red, 'redIAdd works only with red numbers');
    return this.red.iadd(this, num);
  };

  BN.prototype.redSub = function redSub (num) {
    assert(this.red, 'redSub works only with red numbers');
    return this.red.sub(this, num);
  };

  BN.prototype.redISub = function redISub (num) {
    assert(this.red, 'redISub works only with red numbers');
    return this.red.isub(this, num);
  };

  BN.prototype.redShl = function redShl (num) {
    assert(this.red, 'redShl works only with red numbers');
    return this.red.shl(this, num);
  };

  BN.prototype.redMul = function redMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.mul(this, num);
  };

  BN.prototype.redIMul = function redIMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.imul(this, num);
  };

  BN.prototype.redSqr = function redSqr () {
    assert(this.red, 'redSqr works only with red numbers');
    this.red._verify1(this);
    return this.red.sqr(this);
  };

  BN.prototype.redISqr = function redISqr () {
    assert(this.red, 'redISqr works only with red numbers');
    this.red._verify1(this);
    return this.red.isqr(this);
  };

  // Square root over p
  BN.prototype.redSqrt = function redSqrt () {
    assert(this.red, 'redSqrt works only with red numbers');
    this.red._verify1(this);
    return this.red.sqrt(this);
  };

  BN.prototype.redInvm = function redInvm () {
    assert(this.red, 'redInvm works only with red numbers');
    this.red._verify1(this);
    return this.red.invm(this);
  };

  // Return negative clone of `this` % `red modulo`
  BN.prototype.redNeg = function redNeg () {
    assert(this.red, 'redNeg works only with red numbers');
    this.red._verify1(this);
    return this.red.neg(this);
  };

  BN.prototype.redPow = function redPow (num) {
    assert(this.red && !num.red, 'redPow(normalNum)');
    this.red._verify1(this);
    return this.red.pow(this, num);
  };

  // Prime numbers with efficient reduction
  var primes = {
    k256: null,
    p224: null,
    p192: null,
    p25519: null
  };

  // Pseudo-Mersenne prime
  function MPrime (name, p) {
    // P = 2 ^ N - K
    this.name = name;
    this.p = new BN(p, 16);
    this.n = this.p.bitLength();
    this.k = new BN(1).iushln(this.n).isub(this.p);

    this.tmp = this._tmp();
  }

  MPrime.prototype._tmp = function _tmp () {
    var tmp = new BN(null);
    tmp.words = new Array(Math.ceil(this.n / 13));
    return tmp;
  };

  MPrime.prototype.ireduce = function ireduce (num) {
    // Assumes that `num` is less than `P^2`
    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
    var r = num;
    var rlen;

    do {
      this.split(r, this.tmp);
      r = this.imulK(r);
      r = r.iadd(this.tmp);
      rlen = r.bitLength();
    } while (rlen > this.n);

    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
    if (cmp === 0) {
      r.words[0] = 0;
      r.length = 1;
    } else if (cmp > 0) {
      r.isub(this.p);
    } else {
      r.strip();
    }

    return r;
  };

  MPrime.prototype.split = function split (input, out) {
    input.iushrn(this.n, 0, out);
  };

  MPrime.prototype.imulK = function imulK (num) {
    return num.imul(this.k);
  };

  function K256 () {
    MPrime.call(
      this,
      'k256',
      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
  }
  inherits(K256, MPrime);

  K256.prototype.split = function split (input, output) {
    // 256 = 9 * 26 + 22
    var mask = 0x3fffff;

    var outLen = Math.min(input.length, 9);
    for (var i = 0; i < outLen; i++) {
      output.words[i] = input.words[i];
    }
    output.length = outLen;

    if (input.length <= 9) {
      input.words[0] = 0;
      input.length = 1;
      return;
    }

    // Shift by 9 limbs
    var prev = input.words[9];
    output.words[output.length++] = prev & mask;

    for (i = 10; i < input.length; i++) {
      var next = input.words[i] | 0;
      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
      prev = next;
    }
    prev >>>= 22;
    input.words[i - 10] = prev;
    if (prev === 0 && input.length > 10) {
      input.length -= 10;
    } else {
      input.length -= 9;
    }
  };

  K256.prototype.imulK = function imulK (num) {
    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
    num.words[num.length] = 0;
    num.words[num.length + 1] = 0;
    num.length += 2;

    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
    var lo = 0;
    for (var i = 0; i < num.length; i++) {
      var w = num.words[i] | 0;
      lo += w * 0x3d1;
      num.words[i] = lo & 0x3ffffff;
      lo = w * 0x40 + ((lo / 0x4000000) | 0);
    }

    // Fast length reduction
    if (num.words[num.length - 1] === 0) {
      num.length--;
      if (num.words[num.length - 1] === 0) {
        num.length--;
      }
    }
    return num;
  };

  function P224 () {
    MPrime.call(
      this,
      'p224',
      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
  }
  inherits(P224, MPrime);

  function P192 () {
    MPrime.call(
      this,
      'p192',
      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
  }
  inherits(P192, MPrime);

  function P25519 () {
    // 2 ^ 255 - 19
    MPrime.call(
      this,
      '25519',
      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
  }
  inherits(P25519, MPrime);

  P25519.prototype.imulK = function imulK (num) {
    // K = 0x13
    var carry = 0;
    for (var i = 0; i < num.length; i++) {
      var hi = (num.words[i] | 0) * 0x13 + carry;
      var lo = hi & 0x3ffffff;
      hi >>>= 26;

      num.words[i] = lo;
      carry = hi;
    }
    if (carry !== 0) {
      num.words[num.length++] = carry;
    }
    return num;
  };

  // Exported mostly for testing purposes, use plain name instead
  BN._prime = function prime (name) {
    // Cached version of prime
    if (primes[name]) return primes[name];

    var prime;
    if (name === 'k256') {
      prime = new K256();
    } else if (name === 'p224') {
      prime = new P224();
    } else if (name === 'p192') {
      prime = new P192();
    } else if (name === 'p25519') {
      prime = new P25519();
    } else {
      throw new Error('Unknown prime ' + name);
    }
    primes[name] = prime;

    return prime;
  };

  //
  // Base reduction engine
  //
  function Red (m) {
    if (typeof m === 'string') {
      var prime = BN._prime(m);
      this.m = prime.p;
      this.prime = prime;
    } else {
      assert(m.gtn(1), 'modulus must be greater than 1');
      this.m = m;
      this.prime = null;
    }
  }

  Red.prototype._verify1 = function _verify1 (a) {
    assert(a.negative === 0, 'red works only with positives');
    assert(a.red, 'red works only with red numbers');
  };

  Red.prototype._verify2 = function _verify2 (a, b) {
    assert((a.negative | b.negative) === 0, 'red works only with positives');
    assert(a.red && a.red === b.red,
      'red works only with red numbers');
  };

  Red.prototype.imod = function imod (a) {
    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
    return a.umod(this.m)._forceRed(this);
  };

  Red.prototype.neg = function neg (a) {
    if (a.isZero()) {
      return a.clone();
    }

    return this.m.sub(a)._forceRed(this);
  };

  Red.prototype.add = function add (a, b) {
    this._verify2(a, b);

    var res = a.add(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.iadd = function iadd (a, b) {
    this._verify2(a, b);

    var res = a.iadd(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res;
  };

  Red.prototype.sub = function sub (a, b) {
    this._verify2(a, b);

    var res = a.sub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.isub = function isub (a, b) {
    this._verify2(a, b);

    var res = a.isub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res;
  };

  Red.prototype.shl = function shl (a, num) {
    this._verify1(a);
    return this.imod(a.ushln(num));
  };

  Red.prototype.imul = function imul (a, b) {
    this._verify2(a, b);
    return this.imod(a.imul(b));
  };

  Red.prototype.mul = function mul (a, b) {
    this._verify2(a, b);
    return this.imod(a.mul(b));
  };

  Red.prototype.isqr = function isqr (a) {
    return this.imul(a, a.clone());
  };

  Red.prototype.sqr = function sqr (a) {
    return this.mul(a, a);
  };

  Red.prototype.sqrt = function sqrt (a) {
    if (a.isZero()) return a.clone();

    var mod3 = this.m.andln(3);
    assert(mod3 % 2 === 1);

    // Fast case
    if (mod3 === 3) {
      var pow = this.m.add(new BN(1)).iushrn(2);
      return this.pow(a, pow);
    }

    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
    //
    // Find Q and S, that Q * 2 ^ S = (P - 1)
    var q = this.m.subn(1);
    var s = 0;
    while (!q.isZero() && q.andln(1) === 0) {
      s++;
      q.iushrn(1);
    }
    assert(!q.isZero());

    var one = new BN(1).toRed(this);
    var nOne = one.redNeg();

    // Find quadratic non-residue
    // NOTE: Max is such because of generalized Riemann hypothesis.
    var lpow = this.m.subn(1).iushrn(1);
    var z = this.m.bitLength();
    z = new BN(2 * z * z).toRed(this);

    while (this.pow(z, lpow).cmp(nOne) !== 0) {
      z.redIAdd(nOne);
    }

    var c = this.pow(z, q);
    var r = this.pow(a, q.addn(1).iushrn(1));
    var t = this.pow(a, q);
    var m = s;
    while (t.cmp(one) !== 0) {
      var tmp = t;
      for (var i = 0; tmp.cmp(one) !== 0; i++) {
        tmp = tmp.redSqr();
      }
      assert(i < m);
      var b = this.pow(c, new BN(1).iushln(m - i - 1));

      r = r.redMul(b);
      c = b.redSqr();
      t = t.redMul(c);
      m = i;
    }

    return r;
  };

  Red.prototype.invm = function invm (a) {
    var inv = a._invmp(this.m);
    if (inv.negative !== 0) {
      inv.negative = 0;
      return this.imod(inv).redNeg();
    } else {
      return this.imod(inv);
    }
  };

  Red.prototype.pow = function pow (a, num) {
    if (num.isZero()) return new BN(1).toRed(this);
    if (num.cmpn(1) === 0) return a.clone();

    var windowSize = 4;
    var wnd = new Array(1 << windowSize);
    wnd[0] = new BN(1).toRed(this);
    wnd[1] = a;
    for (var i = 2; i < wnd.length; i++) {
      wnd[i] = this.mul(wnd[i - 1], a);
    }

    var res = wnd[0];
    var current = 0;
    var currentLen = 0;
    var start = num.bitLength() % 26;
    if (start === 0) {
      start = 26;
    }

    for (i = num.length - 1; i >= 0; i--) {
      var word = num.words[i];
      for (var j = start - 1; j >= 0; j--) {
        var bit = (word >> j) & 1;
        if (res !== wnd[0]) {
          res = this.sqr(res);
        }

        if (bit === 0 && current === 0) {
          currentLen = 0;
          continue;
        }

        current <<= 1;
        current |= bit;
        currentLen++;
        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;

        res = this.mul(res, wnd[current]);
        currentLen = 0;
        current = 0;
      }
      start = 26;
    }

    return res;
  };

  Red.prototype.convertTo = function convertTo (num) {
    var r = num.umod(this.m);

    return r === num ? r.clone() : r;
  };

  Red.prototype.convertFrom = function convertFrom (num) {
    var res = num.clone();
    res.red = null;
    return res;
  };

  //
  // Montgomery method engine
  //

  BN.mont = function mont (num) {
    return new Mont(num);
  };

  function Mont (m) {
    Red.call(this, m);

    this.shift = this.m.bitLength();
    if (this.shift % 26 !== 0) {
      this.shift += 26 - (this.shift % 26);
    }

    this.r = new BN(1).iushln(this.shift);
    this.r2 = this.imod(this.r.sqr());
    this.rinv = this.r._invmp(this.m);

    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
    this.minv = this.minv.umod(this.r);
    this.minv = this.r.sub(this.minv);
  }
  inherits(Mont, Red);

  Mont.prototype.convertTo = function convertTo (num) {
    return this.imod(num.ushln(this.shift));
  };

  Mont.prototype.convertFrom = function convertFrom (num) {
    var r = this.imod(num.mul(this.rinv));
    r.red = null;
    return r;
  };

  Mont.prototype.imul = function imul (a, b) {
    if (a.isZero() || b.isZero()) {
      a.words[0] = 0;
      a.length = 1;
      return a;
    }

    var t = a.imul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;

    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.mul = function mul (a, b) {
    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);

    var t = a.mul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;
    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.invm = function invm (a) {
    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
    var res = this.imod(a._invmp(this.m).mul(this.r2));
    return res._forceRed(this);
  };
})(typeof module === 'undefined' || module, this);

},{"buffer":19}],18:[function(require,module,exports){
var r;

module.exports = function rand(len) {
  if (!r)
    r = new Rand(null);

  return r.generate(len);
};

function Rand(rand) {
  this.rand = rand;
}
module.exports.Rand = Rand;

Rand.prototype.generate = function generate(len) {
  return this._rand(len);
};

// Emulate crypto API using randy
Rand.prototype._rand = function _rand(n) {
  if (this.rand.getBytes)
    return this.rand.getBytes(n);

  var res = new Uint8Array(n);
  for (var i = 0; i < res.length; i++)
    res[i] = this.rand.getByte();
  return res;
};

if (typeof self === 'object') {
  if (self.crypto && self.crypto.getRandomValues) {
    // Modern browsers
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      self.crypto.getRandomValues(arr);
      return arr;
    };
  } else if (self.msCrypto && self.msCrypto.getRandomValues) {
    // IE
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      self.msCrypto.getRandomValues(arr);
      return arr;
    };

  // Safari's WebWorkers do not have `crypto`
  } else if (typeof window === 'object') {
    // Old junk
    Rand.prototype._rand = function() {
      throw new Error('Not implemented yet');
    };
  }
} else {
  // Node.js or Web worker with no crypto support
  try {
    var crypto = require('crypto');
    if (typeof crypto.randomBytes !== 'function')
      throw new Error('Not supported');

    Rand.prototype._rand = function _rand(n) {
      return crypto.randomBytes(n);
    };
  } catch (e) {
  }
}

},{"crypto":19}],19:[function(require,module,exports){
arguments[4][1][0].apply(exports,arguments)
},{"dup":1}],20:[function(require,module,exports){
// based on the aes implimentation in triple sec
// https://github.com/keybase/triplesec
// which is in turn based on the one from crypto-js
// https://code.google.com/p/crypto-js/

var Buffer = require('safe-buffer').Buffer

function asUInt32Array (buf) {
  if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf)

  var len = (buf.length / 4) | 0
  var out = new Array(len)

  for (var i = 0; i < len; i++) {
    out[i] = buf.readUInt32BE(i * 4)
  }

  return out
}

function scrubVec (v) {
  for (var i = 0; i < v.length; v++) {
    v[i] = 0
  }
}

function cryptBlock (M, keySchedule, SUB_MIX, SBOX, nRounds) {
  var SUB_MIX0 = SUB_MIX[0]
  var SUB_MIX1 = SUB_MIX[1]
  var SUB_MIX2 = SUB_MIX[2]
  var SUB_MIX3 = SUB_MIX[3]

  var s0 = M[0] ^ keySchedule[0]
  var s1 = M[1] ^ keySchedule[1]
  var s2 = M[2] ^ keySchedule[2]
  var s3 = M[3] ^ keySchedule[3]
  var t0, t1, t2, t3
  var ksRow = 4

  for (var round = 1; round < nRounds; round++) {
    t0 = SUB_MIX0[s0 >>> 24] ^ SUB_MIX1[(s1 >>> 16) & 0xff] ^ SUB_MIX2[(s2 >>> 8) & 0xff] ^ SUB_MIX3[s3 & 0xff] ^ keySchedule[ksRow++]
    t1 = SUB_MIX0[s1 >>> 24] ^ SUB_MIX1[(s2 >>> 16) & 0xff] ^ SUB_MIX2[(s3 >>> 8) & 0xff] ^ SUB_MIX3[s0 & 0xff] ^ keySchedule[ksRow++]
    t2 = SUB_MIX0[s2 >>> 24] ^ SUB_MIX1[(s3 >>> 16) & 0xff] ^ SUB_MIX2[(s0 >>> 8) & 0xff] ^ SUB_MIX3[s1 & 0xff] ^ keySchedule[ksRow++]
    t3 = SUB_MIX0[s3 >>> 24] ^ SUB_MIX1[(s0 >>> 16) & 0xff] ^ SUB_MIX2[(s1 >>> 8) & 0xff] ^ SUB_MIX3[s2 & 0xff] ^ keySchedule[ksRow++]
    s0 = t0
    s1 = t1
    s2 = t2
    s3 = t3
  }

  t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++]
  t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++]
  t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++]
  t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++]
  t0 = t0 >>> 0
  t1 = t1 >>> 0
  t2 = t2 >>> 0
  t3 = t3 >>> 0

  return [t0, t1, t2, t3]
}

// AES constants
var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36]
var G = (function () {
  // Compute double table
  var d = new Array(256)
  for (var j = 0; j < 256; j++) {
    if (j < 128) {
      d[j] = j << 1
    } else {
      d[j] = (j << 1) ^ 0x11b
    }
  }

  var SBOX = []
  var INV_SBOX = []
  var SUB_MIX = [[], [], [], []]
  var INV_SUB_MIX = [[], [], [], []]

  // Walk GF(2^8)
  var x = 0
  var xi = 0
  for (var i = 0; i < 256; ++i) {
    // Compute sbox
    var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4)
    sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63
    SBOX[x] = sx
    INV_SBOX[sx] = x

    // Compute multiplication
    var x2 = d[x]
    var x4 = d[x2]
    var x8 = d[x4]

    // Compute sub bytes, mix columns tables
    var t = (d[sx] * 0x101) ^ (sx * 0x1010100)
    SUB_MIX[0][x] = (t << 24) | (t >>> 8)
    SUB_MIX[1][x] = (t << 16) | (t >>> 16)
    SUB_MIX[2][x] = (t << 8) | (t >>> 24)
    SUB_MIX[3][x] = t

    // Compute inv sub bytes, inv mix columns tables
    t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100)
    INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8)
    INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16)
    INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24)
    INV_SUB_MIX[3][sx] = t

    if (x === 0) {
      x = xi = 1
    } else {
      x = x2 ^ d[d[d[x8 ^ x2]]]
      xi ^= d[d[xi]]
    }
  }

  return {
    SBOX: SBOX,
    INV_SBOX: INV_SBOX,
    SUB_MIX: SUB_MIX,
    INV_SUB_MIX: INV_SUB_MIX
  }
})()

function AES (key) {
  this._key = asUInt32Array(key)
  this._reset()
}

AES.blockSize = 4 * 4
AES.keySize = 256 / 8
AES.prototype.blockSize = AES.blockSize
AES.prototype.keySize = AES.keySize
AES.prototype._reset = function () {
  var keyWords = this._key
  var keySize = keyWords.length
  var nRounds = keySize + 6
  var ksRows = (nRounds + 1) * 4

  var keySchedule = []
  for (var k = 0; k < keySize; k++) {
    keySchedule[k] = keyWords[k]
  }

  for (k = keySize; k < ksRows; k++) {
    var t = keySchedule[k - 1]

    if (k % keySize === 0) {
      t = (t << 8) | (t >>> 24)
      t =
        (G.SBOX[t >>> 24] << 24) |
        (G.SBOX[(t >>> 16) & 0xff] << 16) |
        (G.SBOX[(t >>> 8) & 0xff] << 8) |
        (G.SBOX[t & 0xff])

      t ^= RCON[(k / keySize) | 0] << 24
    } else if (keySize > 6 && k % keySize === 4) {
      t =
        (G.SBOX[t >>> 24] << 24) |
        (G.SBOX[(t >>> 16) & 0xff] << 16) |
        (G.SBOX[(t >>> 8) & 0xff] << 8) |
        (G.SBOX[t & 0xff])
    }

    keySchedule[k] = keySchedule[k - keySize] ^ t
  }

  var invKeySchedule = []
  for (var ik = 0; ik < ksRows; ik++) {
    var ksR = ksRows - ik
    var tt = keySchedule[ksR - (ik % 4 ? 0 : 4)]

    if (ik < 4 || ksR <= 4) {
      invKeySchedule[ik] = tt
    } else {
      invKeySchedule[ik] =
        G.INV_SUB_MIX[0][G.SBOX[tt >>> 24]] ^
        G.INV_SUB_MIX[1][G.SBOX[(tt >>> 16) & 0xff]] ^
        G.INV_SUB_MIX[2][G.SBOX[(tt >>> 8) & 0xff]] ^
        G.INV_SUB_MIX[3][G.SBOX[tt & 0xff]]
    }
  }

  this._nRounds = nRounds
  this._keySchedule = keySchedule
  this._invKeySchedule = invKeySchedule
}

AES.prototype.encryptBlockRaw = function (M) {
  M = asUInt32Array(M)
  return cryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX, this._nRounds)
}

AES.prototype.encryptBlock = function (M) {
  var out = this.encryptBlockRaw(M)
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[1], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[3], 12)
  return buf
}

AES.prototype.decryptBlock = function (M) {
  M = asUInt32Array(M)

  // swap
  var m1 = M[1]
  M[1] = M[3]
  M[3] = m1

  var out = cryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX, this._nRounds)
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[3], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[1], 12)
  return buf
}

AES.prototype.scrub = function () {
  scrubVec(this._keySchedule)
  scrubVec(this._invKeySchedule)
  scrubVec(this._key)
}

module.exports.AES = AES

},{"safe-buffer":144}],21:[function(require,module,exports){
var aes = require('./aes')
var Buffer = require('safe-buffer').Buffer
var Transform = require('cipher-base')
var inherits = require('inherits')
var GHASH = require('./ghash')
var xor = require('buffer-xor')
var incr32 = require('./incr32')

function xorTest (a, b) {
  var out = 0
  if (a.length !== b.length) out++

  var len = Math.min(a.length, b.length)
  for (var i = 0; i < len; ++i) {
    out += (a[i] ^ b[i])
  }

  return out
}

function calcIv (self, iv, ck) {
  if (iv.length === 12) {
    self._finID = Buffer.concat([iv, Buffer.from([0, 0, 0, 1])])
    return Buffer.concat([iv, Buffer.from([0, 0, 0, 2])])
  }
  var ghash = new GHASH(ck)
  var len = iv.length
  var toPad = len % 16
  ghash.update(iv)
  if (toPad) {
    toPad = 16 - toPad
    ghash.update(Buffer.alloc(toPad, 0))
  }
  ghash.update(Buffer.alloc(8, 0))
  var ivBits = len * 8
  var tail = Buffer.alloc(8)
  tail.writeUIntBE(ivBits, 0, 8)
  ghash.update(tail)
  self._finID = ghash.state
  var out = Buffer.from(self._finID)
  incr32(out)
  return out
}
function StreamCipher (mode, key, iv, decrypt) {
  Transform.call(this)

  var h = Buffer.alloc(4, 0)

  this._cipher = new aes.AES(key)
  var ck = this._cipher.encryptBlock(h)
  this._ghash = new GHASH(ck)
  iv = calcIv(this, iv, ck)

  this._prev = Buffer.from(iv)
  this._cache = Buffer.allocUnsafe(0)
  this._secCache = Buffer.allocUnsafe(0)
  this._decrypt = decrypt
  this._alen = 0
  this._len = 0
  this._mode = mode

  this._authTag = null
  this._called = false
}

inherits(StreamCipher, Transform)

StreamCipher.prototype._update = function (chunk) {
  if (!this._called && this._alen) {
    var rump = 16 - (this._alen % 16)
    if (rump < 16) {
      rump = Buffer.alloc(rump, 0)
      this._ghash.update(rump)
    }
  }

  this._called = true
  var out = this._mode.encrypt(this, chunk)
  if (this._decrypt) {
    this._ghash.update(chunk)
  } else {
    this._ghash.update(out)
  }
  this._len += chunk.length
  return out
}

StreamCipher.prototype._final = function () {
  if (this._decrypt && !this._authTag) throw new Error('Unsupported state or unable to authenticate data')

  var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID))
  if (this._decrypt && xorTest(tag, this._authTag)) throw new Error('Unsupported state or unable to authenticate data')

  this._authTag = tag
  this._cipher.scrub()
}

StreamCipher.prototype.getAuthTag = function getAuthTag () {
  if (this._decrypt || !Buffer.isBuffer(this._authTag)) throw new Error('Attempting to get auth tag in unsupported state')

  return this._authTag
}

StreamCipher.prototype.setAuthTag = function setAuthTag (tag) {
  if (!this._decrypt) throw new Error('Attempting to set auth tag in unsupported state')

  this._authTag = tag
}

StreamCipher.prototype.setAAD = function setAAD (buf) {
  if (this._called) throw new Error('Attempting to set AAD in unsupported state')

  this._ghash.update(buf)
  this._alen += buf.length
}

module.exports = StreamCipher

},{"./aes":20,"./ghash":25,"./incr32":26,"buffer-xor":47,"cipher-base":49,"inherits":100,"safe-buffer":144}],22:[function(require,module,exports){
var ciphers = require('./encrypter')
var deciphers = require('./decrypter')
var modes = require('./modes/list.json')

function getCiphers () {
  return Object.keys(modes)
}

exports.createCipher = exports.Cipher = ciphers.createCipher
exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv
exports.createDecipher = exports.Decipher = deciphers.createDecipher
exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv
exports.listCiphers = exports.getCiphers = getCiphers

},{"./decrypter":23,"./encrypter":24,"./modes/list.json":34}],23:[function(require,module,exports){
var AuthCipher = require('./authCipher')
var Buffer = require('safe-buffer').Buffer
var MODES = require('./modes')
var StreamCipher = require('./streamCipher')
var Transform = require('cipher-base')
var aes = require('./aes')
var ebtk = require('evp_bytestokey')
var inherits = require('inherits')

function Decipher (mode, key, iv) {
  Transform.call(this)

  this._cache = new Splitter()
  this._last = void 0
  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._mode = mode
  this._autopadding = true
}

inherits(Decipher, Transform)

Decipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []
  while ((chunk = this._cache.get(this._autopadding))) {
    thing = this._mode.decrypt(this, chunk)
    out.push(thing)
  }
  return Buffer.concat(out)
}

Decipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    return unpad(this._mode.decrypt(this, chunk))
  } else if (chunk) {
    throw new Error('data not multiple of block length')
  }
}

Decipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}

function Splitter () {
  this.cache = Buffer.allocUnsafe(0)
}

Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function (autoPadding) {
  var out
  if (autoPadding) {
    if (this.cache.length > 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  } else {
    if (this.cache.length >= 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  }

  return null
}

Splitter.prototype.flush = function () {
  if (this.cache.length) return this.cache
}

function unpad (last) {
  var padded = last[15]
  if (padded < 1 || padded > 16) {
    throw new Error('unable to decrypt data')
  }
  var i = -1
  while (++i < padded) {
    if (last[(i + (16 - padded))] !== padded) {
      throw new Error('unable to decrypt data')
    }
  }
  if (padded === 16) return

  return last.slice(0, 16 - padded)
}

function createDecipheriv (suite, password, iv) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  if (typeof iv === 'string') iv = Buffer.from(iv)
  if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length)

  if (typeof password === 'string') password = Buffer.from(password)
  if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length)

  if (config.type === 'stream') {
    return new StreamCipher(config.module, password, iv, true)
  } else if (config.type === 'auth') {
    return new AuthCipher(config.module, password, iv, true)
  }

  return new Decipher(config.module, password, iv)
}

function createDecipher (suite, password) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  var keys = ebtk(password, false, config.key, config.iv)
  return createDecipheriv(suite, keys.key, keys.iv)
}

exports.createDecipher = createDecipher
exports.createDecipheriv = createDecipheriv

},{"./aes":20,"./authCipher":21,"./modes":33,"./streamCipher":36,"cipher-base":49,"evp_bytestokey":84,"inherits":100,"safe-buffer":144}],24:[function(require,module,exports){
var MODES = require('./modes')
var AuthCipher = require('./authCipher')
var Buffer = require('safe-buffer').Buffer
var StreamCipher = require('./streamCipher')
var Transform = require('cipher-base')
var aes = require('./aes')
var ebtk = require('evp_bytestokey')
var inherits = require('inherits')

function Cipher (mode, key, iv) {
  Transform.call(this)

  this._cache = new Splitter()
  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._mode = mode
  this._autopadding = true
}

inherits(Cipher, Transform)

Cipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []

  while ((chunk = this._cache.get())) {
    thing = this._mode.encrypt(this, chunk)
    out.push(thing)
  }

  return Buffer.concat(out)
}

var PADDING = Buffer.alloc(16, 0x10)

Cipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    chunk = this._mode.encrypt(this, chunk)
    this._cipher.scrub()
    return chunk
  }

  if (!chunk.equals(PADDING)) {
    this._cipher.scrub()
    throw new Error('data not multiple of block length')
  }
}

Cipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}

function Splitter () {
  this.cache = Buffer.allocUnsafe(0)
}

Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function () {
  if (this.cache.length > 15) {
    var out = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    return out
  }
  return null
}

Splitter.prototype.flush = function () {
  var len = 16 - this.cache.length
  var padBuff = Buffer.allocUnsafe(len)

  var i = -1
  while (++i < len) {
    padBuff.writeUInt8(len, i)
  }

  return Buffer.concat([this.cache, padBuff])
}

function createCipheriv (suite, password, iv) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  if (typeof password === 'string') password = Buffer.from(password)
  if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length)

  if (typeof iv === 'string') iv = Buffer.from(iv)
  if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length)

  if (config.type === 'stream') {
    return new StreamCipher(config.module, password, iv)
  } else if (config.type === 'auth') {
    return new AuthCipher(config.module, password, iv)
  }

  return new Cipher(config.module, password, iv)
}

function createCipher (suite, password) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  var keys = ebtk(password, false, config.key, config.iv)
  return createCipheriv(suite, keys.key, keys.iv)
}

exports.createCipheriv = createCipheriv
exports.createCipher = createCipher

},{"./aes":20,"./authCipher":21,"./modes":33,"./streamCipher":36,"cipher-base":49,"evp_bytestokey":84,"inherits":100,"safe-buffer":144}],25:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var ZEROES = Buffer.alloc(16, 0)

function toArray (buf) {
  return [
    buf.readUInt32BE(0),
    buf.readUInt32BE(4),
    buf.readUInt32BE(8),
    buf.readUInt32BE(12)
  ]
}

function fromArray (out) {
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0] >>> 0, 0)
  buf.writeUInt32BE(out[1] >>> 0, 4)
  buf.writeUInt32BE(out[2] >>> 0, 8)
  buf.writeUInt32BE(out[3] >>> 0, 12)
  return buf
}

function GHASH (key) {
  this.h = key
  this.state = Buffer.alloc(16, 0)
  this.cache = Buffer.allocUnsafe(0)
}

// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html
// by Juho Vähä-Herttua
GHASH.prototype.ghash = function (block) {
  var i = -1
  while (++i < block.length) {
    this.state[i] ^= block[i]
  }
  this._multiply()
}

GHASH.prototype._multiply = function () {
  var Vi = toArray(this.h)
  var Zi = [0, 0, 0, 0]
  var j, xi, lsbVi
  var i = -1
  while (++i < 128) {
    xi = (this.state[~~(i / 8)] & (1 << (7 - (i % 8)))) !== 0
    if (xi) {
      // Z_i+1 = Z_i ^ V_i
      Zi[0] ^= Vi[0]
      Zi[1] ^= Vi[1]
      Zi[2] ^= Vi[2]
      Zi[3] ^= Vi[3]
    }

    // Store the value of LSB(V_i)
    lsbVi = (Vi[3] & 1) !== 0

    // V_i+1 = V_i >> 1
    for (j = 3; j > 0; j--) {
      Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31)
    }
    Vi[0] = Vi[0] >>> 1

    // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R
    if (lsbVi) {
      Vi[0] = Vi[0] ^ (0xe1 << 24)
    }
  }
  this.state = fromArray(Zi)
}

GHASH.prototype.update = function (buf) {
  this.cache = Buffer.concat([this.cache, buf])
  var chunk
  while (this.cache.length >= 16) {
    chunk = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    this.ghash(chunk)
  }
}

GHASH.prototype.final = function (abl, bl) {
  if (this.cache.length) {
    this.ghash(Buffer.concat([this.cache, ZEROES], 16))
  }

  this.ghash(fromArray([0, abl, 0, bl]))
  return this.state
}

module.exports = GHASH

},{"safe-buffer":144}],26:[function(require,module,exports){
function incr32 (iv) {
  var len = iv.length
  var item
  while (len--) {
    item = iv.readUInt8(len)
    if (item === 255) {
      iv.writeUInt8(0, len)
    } else {
      item++
      iv.writeUInt8(item, len)
      break
    }
  }
}
module.exports = incr32

},{}],27:[function(require,module,exports){
var xor = require('buffer-xor')

exports.encrypt = function (self, block) {
  var data = xor(block, self._prev)

  self._prev = self._cipher.encryptBlock(data)
  return self._prev
}

exports.decrypt = function (self, block) {
  var pad = self._prev

  self._prev = block
  var out = self._cipher.decryptBlock(block)

  return xor(out, pad)
}

},{"buffer-xor":47}],28:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var xor = require('buffer-xor')

function encryptStart (self, data, decrypt) {
  var len = data.length
  var out = xor(data, self._cache)
  self._cache = self._cache.slice(len)
  self._prev = Buffer.concat([self._prev, decrypt ? data : out])
  return out
}

exports.encrypt = function (self, data, decrypt) {
  var out = Buffer.allocUnsafe(0)
  var len

  while (data.length) {
    if (self._cache.length === 0) {
      self._cache = self._cipher.encryptBlock(self._prev)
      self._prev = Buffer.allocUnsafe(0)
    }

    if (self._cache.length <= data.length) {
      len = self._cache.length
      out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)])
      data = data.slice(len)
    } else {
      out = Buffer.concat([out, encryptStart(self, data, decrypt)])
      break
    }
  }

  return out
}

},{"buffer-xor":47,"safe-buffer":144}],29:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

function encryptByte (self, byteParam, decrypt) {
  var pad
  var i = -1
  var len = 8
  var out = 0
  var bit, value
  while (++i < len) {
    pad = self._cipher.encryptBlock(self._prev)
    bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0
    value = pad[0] ^ bit
    out += ((value & 0x80) >> (i % 8))
    self._prev = shiftIn(self._prev, decrypt ? bit : value)
  }
  return out
}

function shiftIn (buffer, value) {
  var len = buffer.length
  var i = -1
  var out = Buffer.allocUnsafe(buffer.length)
  buffer = Buffer.concat([buffer, Buffer.from([value])])

  while (++i < len) {
    out[i] = buffer[i] << 1 | buffer[i + 1] >> (7)
  }

  return out
}

exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = Buffer.allocUnsafe(len)
  var i = -1

  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }

  return out
}

},{"safe-buffer":144}],30:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

function encryptByte (self, byteParam, decrypt) {
  var pad = self._cipher.encryptBlock(self._prev)
  var out = pad[0] ^ byteParam

  self._prev = Buffer.concat([
    self._prev.slice(1),
    Buffer.from([decrypt ? byteParam : out])
  ])

  return out
}

exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = Buffer.allocUnsafe(len)
  var i = -1

  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }

  return out
}

},{"safe-buffer":144}],31:[function(require,module,exports){
var xor = require('buffer-xor')
var Buffer = require('safe-buffer').Buffer
var incr32 = require('../incr32')

function getBlock (self) {
  var out = self._cipher.encryptBlockRaw(self._prev)
  incr32(self._prev)
  return out
}

var blockSize = 16
exports.encrypt = function (self, chunk) {
  var chunkNum = Math.ceil(chunk.length / blockSize)
  var start = self._cache.length
  self._cache = Buffer.concat([
    self._cache,
    Buffer.allocUnsafe(chunkNum * blockSize)
  ])
  for (var i = 0; i < chunkNum; i++) {
    var out = getBlock(self)
    var offset = start + i * blockSize
    self._cache.writeUInt32BE(out[0], offset + 0)
    self._cache.writeUInt32BE(out[1], offset + 4)
    self._cache.writeUInt32BE(out[2], offset + 8)
    self._cache.writeUInt32BE(out[3], offset + 12)
  }
  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

},{"../incr32":26,"buffer-xor":47,"safe-buffer":144}],32:[function(require,module,exports){
exports.encrypt = function (self, block) {
  return self._cipher.encryptBlock(block)
}

exports.decrypt = function (self, block) {
  return self._cipher.decryptBlock(block)
}

},{}],33:[function(require,module,exports){
var modeModules = {
  ECB: require('./ecb'),
  CBC: require('./cbc'),
  CFB: require('./cfb'),
  CFB8: require('./cfb8'),
  CFB1: require('./cfb1'),
  OFB: require('./ofb'),
  CTR: require('./ctr'),
  GCM: require('./ctr')
}

var modes = require('./list.json')

for (var key in modes) {
  modes[key].module = modeModules[modes[key].mode]
}

module.exports = modes

},{"./cbc":27,"./cfb":28,"./cfb1":29,"./cfb8":30,"./ctr":31,"./ecb":32,"./list.json":34,"./ofb":35}],34:[function(require,module,exports){
module.exports={
  "aes-128-ecb": {
    "cipher": "AES",
    "key": 128,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-192-ecb": {
    "cipher": "AES",
    "key": 192,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-256-ecb": {
    "cipher": "AES",
    "key": 256,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-128-cbc": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-192-cbc": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-256-cbc": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes128": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes192": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes256": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-128-cfb": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-192-cfb": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-256-cfb": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-128-cfb8": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-192-cfb8": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-256-cfb8": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-128-cfb1": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-192-cfb1": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-256-cfb1": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-128-ofb": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-192-ofb": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-256-ofb": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-128-ctr": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-192-ctr": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-256-ctr": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-128-gcm": {
    "cipher": "AES",
    "key": 128,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  },
  "aes-192-gcm": {
    "cipher": "AES",
    "key": 192,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  },
  "aes-256-gcm": {
    "cipher": "AES",
    "key": 256,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  }
}

},{}],35:[function(require,module,exports){
(function (Buffer){
var xor = require('buffer-xor')

function getBlock (self) {
  self._prev = self._cipher.encryptBlock(self._prev)
  return self._prev
}

exports.encrypt = function (self, chunk) {
  while (self._cache.length < chunk.length) {
    self._cache = Buffer.concat([self._cache, getBlock(self)])
  }

  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

}).call(this,require("buffer").Buffer)
},{"buffer":48,"buffer-xor":47}],36:[function(require,module,exports){
var aes = require('./aes')
var Buffer = require('safe-buffer').Buffer
var Transform = require('cipher-base')
var inherits = require('inherits')

function StreamCipher (mode, key, iv, decrypt) {
  Transform.call(this)

  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._cache = Buffer.allocUnsafe(0)
  this._secCache = Buffer.allocUnsafe(0)
  this._decrypt = decrypt
  this._mode = mode
}

inherits(StreamCipher, Transform)

StreamCipher.prototype._update = function (chunk) {
  return this._mode.encrypt(this, chunk, this._decrypt)
}

StreamCipher.prototype._final = function () {
  this._cipher.scrub()
}

module.exports = StreamCipher

},{"./aes":20,"cipher-base":49,"inherits":100,"safe-buffer":144}],37:[function(require,module,exports){
var DES = require('browserify-des')
var aes = require('browserify-aes/browser')
var aesModes = require('browserify-aes/modes')
var desModes = require('browserify-des/modes')
var ebtk = require('evp_bytestokey')

function createCipher (suite, password) {
  suite = suite.toLowerCase()

  var keyLen, ivLen
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }

  var keys = ebtk(password, false, keyLen, ivLen)
  return createCipheriv(suite, keys.key, keys.iv)
}

function createDecipher (suite, password) {
  suite = suite.toLowerCase()

  var keyLen, ivLen
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }

  var keys = ebtk(password, false, keyLen, ivLen)
  return createDecipheriv(suite, keys.key, keys.iv)
}

function createCipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) return aes.createCipheriv(suite, key, iv)
  if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite })

  throw new TypeError('invalid suite type')
}

function createDecipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv)
  if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true })

  throw new TypeError('invalid suite type')
}

function getCiphers () {
  return Object.keys(desModes).concat(aes.getCiphers())
}

exports.createCipher = exports.Cipher = createCipher
exports.createCipheriv = exports.Cipheriv = createCipheriv
exports.createDecipher = exports.Decipher = createDecipher
exports.createDecipheriv = exports.Decipheriv = createDecipheriv
exports.listCiphers = exports.getCiphers = getCiphers

},{"browserify-aes/browser":22,"browserify-aes/modes":33,"browserify-des":38,"browserify-des/modes":39,"evp_bytestokey":84}],38:[function(require,module,exports){
var CipherBase = require('cipher-base')
var des = require('des.js')
var inherits = require('inherits')
var Buffer = require('safe-buffer').Buffer

var modes = {
  'des-ede3-cbc': des.CBC.instantiate(des.EDE),
  'des-ede3': des.EDE,
  'des-ede-cbc': des.CBC.instantiate(des.EDE),
  'des-ede': des.EDE,
  'des-cbc': des.CBC.instantiate(des.DES),
  'des-ecb': des.DES
}
modes.des = modes['des-cbc']
modes.des3 = modes['des-ede3-cbc']
module.exports = DES
inherits(DES, CipherBase)
function DES (opts) {
  CipherBase.call(this)
  var modeName = opts.mode.toLowerCase()
  var mode = modes[modeName]
  var type
  if (opts.decrypt) {
    type = 'decrypt'
  } else {
    type = 'encrypt'
  }
  var key = opts.key
  if (!Buffer.isBuffer(key)) {
    key = Buffer.from(key)
  }
  if (modeName === 'des-ede' || modeName === 'des-ede-cbc') {
    key = Buffer.concat([key, key.slice(0, 8)])
  }
  var iv = opts.iv
  if (!Buffer.isBuffer(iv)) {
    iv = Buffer.from(iv)
  }
  this._des = mode.create({
    key: key,
    iv: iv,
    type: type
  })
}
DES.prototype._update = function (data) {
  return Buffer.from(this._des.update(data))
}
DES.prototype._final = function () {
  return Buffer.from(this._des.final())
}

},{"cipher-base":49,"des.js":57,"inherits":100,"safe-buffer":144}],39:[function(require,module,exports){
exports['des-ecb'] = {
  key: 8,
  iv: 0
}
exports['des-cbc'] = exports.des = {
  key: 8,
  iv: 8
}
exports['des-ede3-cbc'] = exports.des3 = {
  key: 24,
  iv: 8
}
exports['des-ede3'] = {
  key: 24,
  iv: 0
}
exports['des-ede-cbc'] = {
  key: 16,
  iv: 8
}
exports['des-ede'] = {
  key: 16,
  iv: 0
}

},{}],40:[function(require,module,exports){
(function (Buffer){
var bn = require('bn.js');
var randomBytes = require('randombytes');
module.exports = crt;
function blind(priv) {
  var r = getr(priv);
  var blinder = r.toRed(bn.mont(priv.modulus))
  .redPow(new bn(priv.publicExponent)).fromRed();
  return {
    blinder: blinder,
    unblinder:r.invm(priv.modulus)
  };
}
function crt(msg, priv) {
  var blinds = blind(priv);
  var len = priv.modulus.byteLength();
  var mod = bn.mont(priv.modulus);
  var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus);
  var c1 = blinded.toRed(bn.mont(priv.prime1));
  var c2 = blinded.toRed(bn.mont(priv.prime2));
  var qinv = priv.coefficient;
  var p = priv.prime1;
  var q = priv.prime2;
  var m1 = c1.redPow(priv.exponent1);
  var m2 = c2.redPow(priv.exponent2);
  m1 = m1.fromRed();
  m2 = m2.fromRed();
  var h = m1.isub(m2).imul(qinv).umod(p);
  h.imul(q);
  m2.iadd(h);
  return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len));
}
crt.getr = getr;
function getr(priv) {
  var len = priv.modulus.byteLength();
  var r = new bn(randomBytes(len));
  while (r.cmp(priv.modulus) >=  0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) {
    r = new bn(randomBytes(len));
  }
  return r;
}

}).call(this,require("buffer").Buffer)
},{"bn.js":17,"buffer":48,"randombytes":126}],41:[function(require,module,exports){
module.exports = require('./browser/algorithms.json')

},{"./browser/algorithms.json":42}],42:[function(require,module,exports){
module.exports={
  "sha224WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha224",
    "id": "302d300d06096086480165030402040500041c"
  },
  "RSA-SHA224": {
    "sign": "ecdsa/rsa",
    "hash": "sha224",
    "id": "302d300d06096086480165030402040500041c"
  },
  "sha256WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha256",
    "id": "3031300d060960864801650304020105000420"
  },
  "RSA-SHA256": {
    "sign": "ecdsa/rsa",
    "hash": "sha256",
    "id": "3031300d060960864801650304020105000420"
  },
  "sha384WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha384",
    "id": "3041300d060960864801650304020205000430"
  },
  "RSA-SHA384": {
    "sign": "ecdsa/rsa",
    "hash": "sha384",
    "id": "3041300d060960864801650304020205000430"
  },
  "sha512WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha512",
    "id": "3051300d060960864801650304020305000440"
  },
  "RSA-SHA512": {
    "sign": "ecdsa/rsa",
    "hash": "sha512",
    "id": "3051300d060960864801650304020305000440"
  },
  "RSA-SHA1": {
    "sign": "rsa",
    "hash": "sha1",
    "id": "3021300906052b0e03021a05000414"
  },
  "ecdsa-with-SHA1": {
    "sign": "ecdsa",
    "hash": "sha1",
    "id": ""
  },
  "sha256": {
    "sign": "ecdsa",
    "hash": "sha256",
    "id": ""
  },
  "sha224": {
    "sign": "ecdsa",
    "hash": "sha224",
    "id": ""
  },
  "sha384": {
    "sign": "ecdsa",
    "hash": "sha384",
    "id": ""
  },
  "sha512": {
    "sign": "ecdsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-SHA": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA-SHA1": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA-WITH-SHA224": {
    "sign": "dsa",
    "hash": "sha224",
    "id": ""
  },
  "DSA-SHA224": {
    "sign": "dsa",
    "hash": "sha224",
    "id": ""
  },
  "DSA-WITH-SHA256": {
    "sign": "dsa",
    "hash": "sha256",
    "id": ""
  },
  "DSA-SHA256": {
    "sign": "dsa",
    "hash": "sha256",
    "id": ""
  },
  "DSA-WITH-SHA384": {
    "sign": "dsa",
    "hash": "sha384",
    "id": ""
  },
  "DSA-SHA384": {
    "sign": "dsa",
    "hash": "sha384",
    "id": ""
  },
  "DSA-WITH-SHA512": {
    "sign": "dsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-SHA512": {
    "sign": "dsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-RIPEMD160": {
    "sign": "dsa",
    "hash": "rmd160",
    "id": ""
  },
  "ripemd160WithRSA": {
    "sign": "rsa",
    "hash": "rmd160",
    "id": "3021300906052b2403020105000414"
  },
  "RSA-RIPEMD160": {
    "sign": "rsa",
    "hash": "rmd160",
    "id": "3021300906052b2403020105000414"
  },
  "md5WithRSAEncryption": {
    "sign": "rsa",
    "hash": "md5",
    "id": "3020300c06082a864886f70d020505000410"
  },
  "RSA-MD5": {
    "sign": "rsa",
    "hash": "md5",
    "id": "3020300c06082a864886f70d020505000410"
  }
}

},{}],43:[function(require,module,exports){
module.exports={
  "1.3.132.0.10": "secp256k1",
  "1.3.132.0.33": "p224",
  "1.2.840.10045.3.1.1": "p192",
  "1.2.840.10045.3.1.7": "p256",
  "1.3.132.0.34": "p384",
  "1.3.132.0.35": "p521"
}

},{}],44:[function(require,module,exports){
(function (Buffer){
var createHash = require('create-hash')
var stream = require('stream')
var inherits = require('inherits')
var sign = require('./sign')
var verify = require('./verify')

var algorithms = require('./algorithms.json')
Object.keys(algorithms).forEach(function (key) {
  algorithms[key].id = new Buffer(algorithms[key].id, 'hex')
  algorithms[key.toLowerCase()] = algorithms[key]
})

function Sign (algorithm) {
  stream.Writable.call(this)

  var data = algorithms[algorithm]
  if (!data) throw new Error('Unknown message digest')

  this._hashType = data.hash
  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Sign, stream.Writable)

Sign.prototype._write = function _write (data, _, done) {
  this._hash.update(data)
  done()
}

Sign.prototype.update = function update (data, enc) {
  if (typeof data === 'string') data = new Buffer(data, enc)

  this._hash.update(data)
  return this
}

Sign.prototype.sign = function signMethod (key, enc) {
  this.end()
  var hash = this._hash.digest()
  var sig = sign(hash, key, this._hashType, this._signType, this._tag)

  return enc ? sig.toString(enc) : sig
}

function Verify (algorithm) {
  stream.Writable.call(this)

  var data = algorithms[algorithm]
  if (!data) throw new Error('Unknown message digest')

  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Verify, stream.Writable)

Verify.prototype._write = function _write (data, _, done) {
  this._hash.update(data)
  done()
}

Verify.prototype.update = function update (data, enc) {
  if (typeof data === 'string') data = new Buffer(data, enc)

  this._hash.update(data)
  return this
}

Verify.prototype.verify = function verifyMethod (key, sig, enc) {
  if (typeof sig === 'string') sig = new Buffer(sig, enc)

  this.end()
  var hash = this._hash.digest()
  return verify(sig, hash, key, this._signType, this._tag)
}

function createSign (algorithm) {
  return new Sign(algorithm)
}

function createVerify (algorithm) {
  return new Verify(algorithm)
}

module.exports = {
  Sign: createSign,
  Verify: createVerify,
  createSign: createSign,
  createVerify: createVerify
}

}).call(this,require("buffer").Buffer)
},{"./algorithms.json":42,"./sign":45,"./verify":46,"buffer":48,"create-hash":52,"inherits":100,"stream":153}],45:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var createHmac = require('create-hmac')
var crt = require('browserify-rsa')
var EC = require('elliptic').ec
var BN = require('bn.js')
var parseKeys = require('parse-asn1')
var curves = require('./curves.json')

function sign (hash, key, hashType, signType, tag) {
  var priv = parseKeys(key)
  if (priv.curve) {
    // rsa keys can be interpreted as ecdsa ones in openssl
    if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type')
    return ecSign(hash, priv)
  } else if (priv.type === 'dsa') {
    if (signType !== 'dsa') throw new Error('wrong private key type')
    return dsaSign(hash, priv, hashType)
  } else {
    if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type')
  }
  hash = Buffer.concat([tag, hash])
  var len = priv.modulus.byteLength()
  var pad = [ 0, 1 ]
  while (hash.length + pad.length + 1 < len) pad.push(0xff)
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) pad.push(hash[i])

  var out = crt(pad, priv)
  return out
}

function ecSign (hash, priv) {
  var curveId = curves[priv.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.'))

  var curve = new EC(curveId)
  var key = curve.keyFromPrivate(priv.privateKey)
  var out = key.sign(hash)

  return new Buffer(out.toDER())
}

function dsaSign (hash, priv, algo) {
  var x = priv.params.priv_key
  var p = priv.params.p
  var q = priv.params.q
  var g = priv.params.g
  var r = new BN(0)
  var k
  var H = bits2int(hash, q).mod(q)
  var s = false
  var kv = getKey(x, q, hash, algo)
  while (s === false) {
    k = makeKey(q, kv, algo)
    r = makeR(g, k, p, q)
    s = k.invm(q).imul(H.add(x.mul(r))).mod(q)
    if (s.cmpn(0) === 0) {
      s = false
      r = new BN(0)
    }
  }
  return toDER(r, s)
}

function toDER (r, s) {
  r = r.toArray()
  s = s.toArray()

  // Pad values
  if (r[0] & 0x80) r = [ 0 ].concat(r)
  if (s[0] & 0x80) s = [ 0 ].concat(s)

  var total = r.length + s.length + 4
  var res = [ 0x30, total, 0x02, r.length ]
  res = res.concat(r, [ 0x02, s.length ], s)
  return new Buffer(res)
}

function getKey (x, q, hash, algo) {
  x = new Buffer(x.toArray())
  if (x.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - x.length)
    zeros.fill(0)
    x = Buffer.concat([ zeros, x ])
  }
  var hlen = hash.length
  var hbits = bits2octets(hash, q)
  var v = new Buffer(hlen)
  v.fill(1)
  var k = new Buffer(hlen)
  k.fill(0)
  k = createHmac(algo, k).update(v).update(new Buffer([ 0 ])).update(x).update(hbits).digest()
  v = createHmac(algo, k).update(v).digest()
  k = createHmac(algo, k).update(v).update(new Buffer([ 1 ])).update(x).update(hbits).digest()
  v = createHmac(algo, k).update(v).digest()
  return { k: k, v: v }
}

function bits2int (obits, q) {
  var bits = new BN(obits)
  var shift = (obits.length << 3) - q.bitLength()
  if (shift > 0) bits.ishrn(shift)
  return bits
}

function bits2octets (bits, q) {
  bits = bits2int(bits, q)
  bits = bits.mod(q)
  var out = new Buffer(bits.toArray())
  if (out.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - out.length)
    zeros.fill(0)
    out = Buffer.concat([ zeros, out ])
  }
  return out
}

function makeKey (q, kv, algo) {
  var t
  var k

  do {
    t = new Buffer(0)

    while (t.length * 8 < q.bitLength()) {
      kv.v = createHmac(algo, kv.k).update(kv.v).digest()
      t = Buffer.concat([ t, kv.v ])
    }

    k = bits2int(t, q)
    kv.k = createHmac(algo, kv.k).update(kv.v).update(new Buffer([ 0 ])).digest()
    kv.v = createHmac(algo, kv.k).update(kv.v).digest()
  } while (k.cmp(q) !== -1)

  return k
}

function makeR (g, k, p, q) {
  return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q)
}

module.exports = sign
module.exports.getKey = getKey
module.exports.makeKey = makeKey

}).call(this,require("buffer").Buffer)
},{"./curves.json":43,"bn.js":17,"browserify-rsa":40,"buffer":48,"create-hmac":54,"elliptic":67,"parse-asn1":112}],46:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var BN = require('bn.js')
var EC = require('elliptic').ec
var parseKeys = require('parse-asn1')
var curves = require('./curves.json')

function verify (sig, hash, key, signType, tag) {
  var pub = parseKeys(key)
  if (pub.type === 'ec') {
    // rsa keys can be interpreted as ecdsa ones in openssl
    if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type')
    return ecVerify(sig, hash, pub)
  } else if (pub.type === 'dsa') {
    if (signType !== 'dsa') throw new Error('wrong public key type')
    return dsaVerify(sig, hash, pub)
  } else {
    if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type')
  }
  hash = Buffer.concat([tag, hash])
  var len = pub.modulus.byteLength()
  var pad = [ 1 ]
  var padNum = 0
  while (hash.length + pad.length + 2 < len) {
    pad.push(0xff)
    padNum++
  }
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) {
    pad.push(hash[i])
  }
  pad = new Buffer(pad)
  var red = BN.mont(pub.modulus)
  sig = new BN(sig).toRed(red)

  sig = sig.redPow(new BN(pub.publicExponent))
  sig = new Buffer(sig.fromRed().toArray())
  var out = padNum < 8 ? 1 : 0
  len = Math.min(sig.length, pad.length)
  if (sig.length !== pad.length) out = 1

  i = -1
  while (++i < len) out |= sig[i] ^ pad[i]
  return out === 0
}

function ecVerify (sig, hash, pub) {
  var curveId = curves[pub.data.algorithm.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.'))

  var curve = new EC(curveId)
  var pubkey = pub.data.subjectPrivateKey.data

  return curve.verify(hash, sig, pubkey)
}

function dsaVerify (sig, hash, pub) {
  var p = pub.data.p
  var q = pub.data.q
  var g = pub.data.g
  var y = pub.data.pub_key
  var unpacked = parseKeys.signature.decode(sig, 'der')
  var s = unpacked.s
  var r = unpacked.r
  checkValue(s, q)
  checkValue(r, q)
  var montp = BN.mont(p)
  var w = s.invm(q)
  var v = g.toRed(montp)
    .redPow(new BN(hash).mul(w).mod(q))
    .fromRed()
    .mul(y.toRed(montp).redPow(r.mul(w).mod(q)).fromRed())
    .mod(p)
    .mod(q)
  return v.cmp(r) === 0
}

function checkValue (b, q) {
  if (b.cmpn(0) <= 0) throw new Error('invalid sig')
  if (b.cmp(q) >= q) throw new Error('invalid sig')
}

module.exports = verify

}).call(this,require("buffer").Buffer)
},{"./curves.json":43,"bn.js":17,"buffer":48,"elliptic":67,"parse-asn1":112}],47:[function(require,module,exports){
(function (Buffer){
module.exports = function xor (a, b) {
  var length = Math.min(a.length, b.length)
  var buffer = new Buffer(length)

  for (var i = 0; i < length; ++i) {
    buffer[i] = a[i] ^ b[i]
  }

  return buffer
}

}).call(this,require("buffer").Buffer)
},{"buffer":48}],48:[function(require,module,exports){
(function (Buffer){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var customInspectSymbol =
  (typeof Symbol === 'function' && typeof Symbol.for === 'function')
    ? Symbol.for('nodejs.util.inspect.custom')
    : null

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    var proto = { foo: function () { return 42 } }
    Object.setPrototypeOf(proto, Uint8Array.prototype)
    Object.setPrototypeOf(arr, proto)
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  Object.setPrototypeOf(buf, Buffer.prototype)
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw new TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Object.setPrototypeOf(Buffer.prototype, Uint8Array.prototype)
Object.setPrototypeOf(Buffer, Uint8Array)

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  Object.setPrototypeOf(buf, Buffer.prototype)

  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}
if (customInspectSymbol) {
  Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [val], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += hexSliceLookupTable[buf[i]]
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  Object.setPrototypeOf(newBuf, Buffer.prototype)

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  } else if (typeof val === 'boolean') {
    val = Number(val)
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

// Create lookup table for `toString('hex')`
// See: https://github.com/feross/buffer/issues/219
var hexSliceLookupTable = (function () {
  var alphabet = '0123456789abcdef'
  var table = new Array(256)
  for (var i = 0; i < 16; ++i) {
    var i16 = i * 16
    for (var j = 0; j < 16; ++j) {
      table[i16 + j] = alphabet[i] + alphabet[j]
    }
  }
  return table
})()

}).call(this,require("buffer").Buffer)
},{"base64-js":16,"buffer":48,"ieee754":99}],49:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var StringDecoder = require('string_decoder').StringDecoder
var inherits = require('inherits')

function CipherBase (hashMode) {
  Transform.call(this)
  this.hashMode = typeof hashMode === 'string'
  if (this.hashMode) {
    this[hashMode] = this._finalOrDigest
  } else {
    this.final = this._finalOrDigest
  }
  if (this._final) {
    this.__final = this._final
    this._final = null
  }
  this._decoder = null
  this._encoding = null
}
inherits(CipherBase, Transform)

CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
  if (typeof data === 'string') {
    data = Buffer.from(data, inputEnc)
  }

  var outData = this._update(data)
  if (this.hashMode) return this

  if (outputEnc) {
    outData = this._toString(outData, outputEnc)
  }

  return outData
}

CipherBase.prototype.setAutoPadding = function () {}
CipherBase.prototype.getAuthTag = function () {
  throw new Error('trying to get auth tag in unsupported state')
}

CipherBase.prototype.setAuthTag = function () {
  throw new Error('trying to set auth tag in unsupported state')
}

CipherBase.prototype.setAAD = function () {
  throw new Error('trying to set aad in unsupported state')
}

CipherBase.prototype._transform = function (data, _, next) {
  var err
  try {
    if (this.hashMode) {
      this._update(data)
    } else {
      this.push(this._update(data))
    }
  } catch (e) {
    err = e
  } finally {
    next(err)
  }
}
CipherBase.prototype._flush = function (done) {
  var err
  try {
    this.push(this.__final())
  } catch (e) {
    err = e
  }

  done(err)
}
CipherBase.prototype._finalOrDigest = function (outputEnc) {
  var outData = this.__final() || Buffer.alloc(0)
  if (outputEnc) {
    outData = this._toString(outData, outputEnc, true)
  }
  return outData
}

CipherBase.prototype._toString = function (value, enc, fin) {
  if (!this._decoder) {
    this._decoder = new StringDecoder(enc)
    this._encoding = enc
  }

  if (this._encoding !== enc) throw new Error('can\'t switch encodings')

  var out = this._decoder.write(value)
  if (fin) {
    out += this._decoder.end()
  }

  return out
}

module.exports = CipherBase

},{"inherits":100,"safe-buffer":144,"stream":153,"string_decoder":154}],50:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":101}],51:[function(require,module,exports){
(function (Buffer){
var elliptic = require('elliptic')
var BN = require('bn.js')

module.exports = function createECDH (curve) {
  return new ECDH(curve)
}

var aliases = {
  secp256k1: {
    name: 'secp256k1',
    byteLength: 32
  },
  secp224r1: {
    name: 'p224',
    byteLength: 28
  },
  prime256v1: {
    name: 'p256',
    byteLength: 32
  },
  prime192v1: {
    name: 'p192',
    byteLength: 24
  },
  ed25519: {
    name: 'ed25519',
    byteLength: 32
  },
  secp384r1: {
    name: 'p384',
    byteLength: 48
  },
  secp521r1: {
    name: 'p521',
    byteLength: 66
  }
}

aliases.p224 = aliases.secp224r1
aliases.p256 = aliases.secp256r1 = aliases.prime256v1
aliases.p192 = aliases.secp192r1 = aliases.prime192v1
aliases.p384 = aliases.secp384r1
aliases.p521 = aliases.secp521r1

function ECDH (curve) {
  this.curveType = aliases[curve]
  if (!this.curveType) {
    this.curveType = {
      name: curve
    }
  }
  this.curve = new elliptic.ec(this.curveType.name) // eslint-disable-line new-cap
  this.keys = void 0
}

ECDH.prototype.generateKeys = function (enc, format) {
  this.keys = this.curve.genKeyPair()
  return this.getPublicKey(enc, format)
}

ECDH.prototype.computeSecret = function (other, inenc, enc) {
  inenc = inenc || 'utf8'
  if (!Buffer.isBuffer(other)) {
    other = new Buffer(other, inenc)
  }
  var otherPub = this.curve.keyFromPublic(other).getPublic()
  var out = otherPub.mul(this.keys.getPrivate()).getX()
  return formatReturnValue(out, enc, this.curveType.byteLength)
}

ECDH.prototype.getPublicKey = function (enc, format) {
  var key = this.keys.getPublic(format === 'compressed', true)
  if (format === 'hybrid') {
    if (key[key.length - 1] % 2) {
      key[0] = 7
    } else {
      key[0] = 6
    }
  }
  return formatReturnValue(key, enc)
}

ECDH.prototype.getPrivateKey = function (enc) {
  return formatReturnValue(this.keys.getPrivate(), enc)
}

ECDH.prototype.setPublicKey = function (pub, enc) {
  enc = enc || 'utf8'
  if (!Buffer.isBuffer(pub)) {
    pub = new Buffer(pub, enc)
  }
  this.keys._importPublic(pub)
  return this
}

ECDH.prototype.setPrivateKey = function (priv, enc) {
  enc = enc || 'utf8'
  if (!Buffer.isBuffer(priv)) {
    priv = new Buffer(priv, enc)
  }

  var _priv = new BN(priv)
  _priv = _priv.toString(16)
  this.keys = this.curve.genKeyPair()
  this.keys._importPrivate(_priv)
  return this
}

function formatReturnValue (bn, enc, len) {
  if (!Array.isArray(bn)) {
    bn = bn.toArray()
  }
  var buf = new Buffer(bn)
  if (len && buf.length < len) {
    var zeros = new Buffer(len - buf.length)
    zeros.fill(0)
    buf = Buffer.concat([zeros, buf])
  }
  if (!enc) {
    return buf
  } else {
    return buf.toString(enc)
  }
}

}).call(this,require("buffer").Buffer)
},{"bn.js":17,"buffer":48,"elliptic":67}],52:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var MD5 = require('md5.js')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')
var Base = require('cipher-base')

function Hash (hash) {
  Base.call(this, 'digest')

  this._hash = hash
}

inherits(Hash, Base)

Hash.prototype._update = function (data) {
  this._hash.update(data)
}

Hash.prototype._final = function () {
  return this._hash.digest()
}

module.exports = function createHash (alg) {
  alg = alg.toLowerCase()
  if (alg === 'md5') return new MD5()
  if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160()

  return new Hash(sha(alg))
}

},{"cipher-base":49,"inherits":100,"md5.js":103,"ripemd160":143,"sha.js":146}],53:[function(require,module,exports){
var MD5 = require('md5.js')

module.exports = function (buffer) {
  return new MD5().update(buffer).digest()
}

},{"md5.js":103}],54:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Legacy = require('./legacy')
var Base = require('cipher-base')
var Buffer = require('safe-buffer').Buffer
var md5 = require('create-hash/md5')
var RIPEMD160 = require('ripemd160')

var sha = require('sha.js')

var ZEROS = Buffer.alloc(128)

function Hmac (alg, key) {
  Base.call(this, 'digest')
  if (typeof key === 'string') {
    key = Buffer.from(key)
  }

  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64

  this._alg = alg
  this._key = key
  if (key.length > blocksize) {
    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
    key = hash.update(key).digest()
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  var opad = this._opad = Buffer.allocUnsafe(blocksize)

  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }
  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
  this._hash.update(ipad)
}

inherits(Hmac, Base)

Hmac.prototype._update = function (data) {
  this._hash.update(data)
}

Hmac.prototype._final = function () {
  var h = this._hash.digest()
  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
  return hash.update(this._opad).update(h).digest()
}

module.exports = function createHmac (alg, key) {
  alg = alg.toLowerCase()
  if (alg === 'rmd160' || alg === 'ripemd160') {
    return new Hmac('rmd160', key)
  }
  if (alg === 'md5') {
    return new Legacy(md5, key)
  }
  return new Hmac(alg, key)
}

},{"./legacy":55,"cipher-base":49,"create-hash/md5":53,"inherits":100,"ripemd160":143,"safe-buffer":144,"sha.js":146}],55:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Buffer = require('safe-buffer').Buffer

var Base = require('cipher-base')

var ZEROS = Buffer.alloc(128)
var blocksize = 64

function Hmac (alg, key) {
  Base.call(this, 'digest')
  if (typeof key === 'string') {
    key = Buffer.from(key)
  }

  this._alg = alg
  this._key = key

  if (key.length > blocksize) {
    key = alg(key)
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  var opad = this._opad = Buffer.allocUnsafe(blocksize)

  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  this._hash = [ipad]
}

inherits(Hmac, Base)

Hmac.prototype._update = function (data) {
  this._hash.push(data)
}

Hmac.prototype._final = function () {
  var h = this._alg(Buffer.concat(this._hash))
  return this._alg(Buffer.concat([this._opad, h]))
}
module.exports = Hmac

},{"cipher-base":49,"inherits":100,"safe-buffer":144}],56:[function(require,module,exports){
'use strict'

exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes')
exports.createHash = exports.Hash = require('create-hash')
exports.createHmac = exports.Hmac = require('create-hmac')

var algos = require('browserify-sign/algos')
var algoKeys = Object.keys(algos)
var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(algoKeys)
exports.getHashes = function () {
  return hashes
}

var p = require('pbkdf2')
exports.pbkdf2 = p.pbkdf2
exports.pbkdf2Sync = p.pbkdf2Sync

var aes = require('browserify-cipher')

exports.Cipher = aes.Cipher
exports.createCipher = aes.createCipher
exports.Cipheriv = aes.Cipheriv
exports.createCipheriv = aes.createCipheriv
exports.Decipher = aes.Decipher
exports.createDecipher = aes.createDecipher
exports.Decipheriv = aes.Decipheriv
exports.createDecipheriv = aes.createDecipheriv
exports.getCiphers = aes.getCiphers
exports.listCiphers = aes.listCiphers

var dh = require('diffie-hellman')

exports.DiffieHellmanGroup = dh.DiffieHellmanGroup
exports.createDiffieHellmanGroup = dh.createDiffieHellmanGroup
exports.getDiffieHellman = dh.getDiffieHellman
exports.createDiffieHellman = dh.createDiffieHellman
exports.DiffieHellman = dh.DiffieHellman

var sign = require('browserify-sign')

exports.createSign = sign.createSign
exports.Sign = sign.Sign
exports.createVerify = sign.createVerify
exports.Verify = sign.Verify

exports.createECDH = require('create-ecdh')

var publicEncrypt = require('public-encrypt')

exports.publicEncrypt = publicEncrypt.publicEncrypt
exports.privateEncrypt = publicEncrypt.privateEncrypt
exports.publicDecrypt = publicEncrypt.publicDecrypt
exports.privateDecrypt = publicEncrypt.privateDecrypt

// the least I can do is make error messages for the rest of the node.js/crypto api.
// ;[
//   'createCredentials'
// ].forEach(function (name) {
//   exports[name] = function () {
//     throw new Error([
//       'sorry, ' + name + ' is not implemented yet',
//       'we accept pull requests',
//       'https://github.com/crypto-browserify/crypto-browserify'
//     ].join('\n'))
//   }
// })

var rf = require('randomfill')

exports.randomFill = rf.randomFill
exports.randomFillSync = rf.randomFillSync

exports.createCredentials = function () {
  throw new Error([
    'sorry, createCredentials is not implemented yet',
    'we accept pull requests',
    'https://github.com/crypto-browserify/crypto-browserify'
  ].join('\n'))
}

exports.constants = {
  'DH_CHECK_P_NOT_SAFE_PRIME': 2,
  'DH_CHECK_P_NOT_PRIME': 1,
  'DH_UNABLE_TO_CHECK_GENERATOR': 4,
  'DH_NOT_SUITABLE_GENERATOR': 8,
  'NPN_ENABLED': 1,
  'ALPN_ENABLED': 1,
  'RSA_PKCS1_PADDING': 1,
  'RSA_SSLV23_PADDING': 2,
  'RSA_NO_PADDING': 3,
  'RSA_PKCS1_OAEP_PADDING': 4,
  'RSA_X931_PADDING': 5,
  'RSA_PKCS1_PSS_PADDING': 6,
  'POINT_CONVERSION_COMPRESSED': 2,
  'POINT_CONVERSION_UNCOMPRESSED': 4,
  'POINT_CONVERSION_HYBRID': 6
}

},{"browserify-cipher":37,"browserify-sign":44,"browserify-sign/algos":41,"create-ecdh":51,"create-hash":52,"create-hmac":54,"diffie-hellman":63,"pbkdf2":113,"public-encrypt":120,"randombytes":126,"randomfill":127}],57:[function(require,module,exports){
'use strict';

exports.utils = require('./des/utils');
exports.Cipher = require('./des/cipher');
exports.DES = require('./des/des');
exports.CBC = require('./des/cbc');
exports.EDE = require('./des/ede');

},{"./des/cbc":58,"./des/cipher":59,"./des/des":60,"./des/ede":61,"./des/utils":62}],58:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var proto = {};

function CBCState(iv) {
  assert.equal(iv.length, 8, 'Invalid IV length');

  this.iv = new Array(8);
  for (var i = 0; i < this.iv.length; i++)
    this.iv[i] = iv[i];
}

function instantiate(Base) {
  function CBC(options) {
    Base.call(this, options);
    this._cbcInit();
  }
  inherits(CBC, Base);

  var keys = Object.keys(proto);
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    CBC.prototype[key] = proto[key];
  }

  CBC.create = function create(options) {
    return new CBC(options);
  };

  return CBC;
}

exports.instantiate = instantiate;

proto._cbcInit = function _cbcInit() {
  var state = new CBCState(this.options.iv);
  this._cbcState = state;
};

proto._update = function _update(inp, inOff, out, outOff) {
  var state = this._cbcState;
  var superProto = this.constructor.super_.prototype;

  var iv = state.iv;
  if (this.type === 'encrypt') {
    for (var i = 0; i < this.blockSize; i++)
      iv[i] ^= inp[inOff + i];

    superProto._update.call(this, iv, 0, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = out[outOff + i];
  } else {
    superProto._update.call(this, inp, inOff, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      out[outOff + i] ^= iv[i];

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = inp[inOff + i];
  }
};

},{"inherits":100,"minimalistic-assert":105}],59:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');

function Cipher(options) {
  this.options = options;

  this.type = this.options.type;
  this.blockSize = 8;
  this._init();

  this.buffer = new Array(this.blockSize);
  this.bufferOff = 0;
}
module.exports = Cipher;

Cipher.prototype._init = function _init() {
  // Might be overrided
};

Cipher.prototype.update = function update(data) {
  if (data.length === 0)
    return [];

  if (this.type === 'decrypt')
    return this._updateDecrypt(data);
  else
    return this._updateEncrypt(data);
};

Cipher.prototype._buffer = function _buffer(data, off) {
  // Append data to buffer
  var min = Math.min(this.buffer.length - this.bufferOff, data.length - off);
  for (var i = 0; i < min; i++)
    this.buffer[this.bufferOff + i] = data[off + i];
  this.bufferOff += min;

  // Shift next
  return min;
};

Cipher.prototype._flushBuffer = function _flushBuffer(out, off) {
  this._update(this.buffer, 0, out, off);
  this.bufferOff = 0;
  return this.blockSize;
};

Cipher.prototype._updateEncrypt = function _updateEncrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = ((this.bufferOff + data.length) / this.blockSize) | 0;
  var out = new Array(count * this.blockSize);

  if (this.bufferOff !== 0) {
    inputOff += this._buffer(data, inputOff);

    if (this.bufferOff === this.buffer.length)
      outputOff += this._flushBuffer(out, outputOff);
  }

  // Write blocks
  var max = data.length - ((data.length - inputOff) % this.blockSize);
  for (; inputOff < max; inputOff += this.blockSize) {
    this._update(data, inputOff, out, outputOff);
    outputOff += this.blockSize;
  }

  // Queue rest
  for (; inputOff < data.length; inputOff++, this.bufferOff++)
    this.buffer[this.bufferOff] = data[inputOff];

  return out;
};

Cipher.prototype._updateDecrypt = function _updateDecrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1;
  var out = new Array(count * this.blockSize);

  // TODO(indutny): optimize it, this is far from optimal
  for (; count > 0; count--) {
    inputOff += this._buffer(data, inputOff);
    outputOff += this._flushBuffer(out, outputOff);
  }

  // Buffer rest of the input
  inputOff += this._buffer(data, inputOff);

  return out;
};

Cipher.prototype.final = function final(buffer) {
  var first;
  if (buffer)
    first = this.update(buffer);

  var last;
  if (this.type === 'encrypt')
    last = this._finalEncrypt();
  else
    last = this._finalDecrypt();

  if (first)
    return first.concat(last);
  else
    return last;
};

Cipher.prototype._pad = function _pad(buffer, off) {
  if (off === 0)
    return false;

  while (off < buffer.length)
    buffer[off++] = 0;

  return true;
};

Cipher.prototype._finalEncrypt = function _finalEncrypt() {
  if (!this._pad(this.buffer, this.bufferOff))
    return [];

  var out = new Array(this.blockSize);
  this._update(this.buffer, 0, out, 0);
  return out;
};

Cipher.prototype._unpad = function _unpad(buffer) {
  return buffer;
};

Cipher.prototype._finalDecrypt = function _finalDecrypt() {
  assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt');
  var out = new Array(this.blockSize);
  this._flushBuffer(out, 0);

  return this._unpad(out);
};

},{"minimalistic-assert":105}],60:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var utils = des.utils;
var Cipher = des.Cipher;

function DESState() {
  this.tmp = new Array(2);
  this.keys = null;
}

function DES(options) {
  Cipher.call(this, options);

  var state = new DESState();
  this._desState = state;

  this.deriveKeys(state, options.key);
}
inherits(DES, Cipher);
module.exports = DES;

DES.create = function create(options) {
  return new DES(options);
};

var shiftTable = [
  1, 1, 2, 2, 2, 2, 2, 2,
  1, 2, 2, 2, 2, 2, 2, 1
];

DES.prototype.deriveKeys = function deriveKeys(state, key) {
  state.keys = new Array(16 * 2);

  assert.equal(key.length, this.blockSize, 'Invalid key length');

  var kL = utils.readUInt32BE(key, 0);
  var kR = utils.readUInt32BE(key, 4);

  utils.pc1(kL, kR, state.tmp, 0);
  kL = state.tmp[0];
  kR = state.tmp[1];
  for (var i = 0; i < state.keys.length; i += 2) {
    var shift = shiftTable[i >>> 1];
    kL = utils.r28shl(kL, shift);
    kR = utils.r28shl(kR, shift);
    utils.pc2(kL, kR, state.keys, i);
  }
};

DES.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._desState;

  var l = utils.readUInt32BE(inp, inOff);
  var r = utils.readUInt32BE(inp, inOff + 4);

  // Initial Permutation
  utils.ip(l, r, state.tmp, 0);
  l = state.tmp[0];
  r = state.tmp[1];

  if (this.type === 'encrypt')
    this._encrypt(state, l, r, state.tmp, 0);
  else
    this._decrypt(state, l, r, state.tmp, 0);

  l = state.tmp[0];
  r = state.tmp[1];

  utils.writeUInt32BE(out, l, outOff);
  utils.writeUInt32BE(out, r, outOff + 4);
};

DES.prototype._pad = function _pad(buffer, off) {
  var value = buffer.length - off;
  for (var i = off; i < buffer.length; i++)
    buffer[i] = value;

  return true;
};

DES.prototype._unpad = function _unpad(buffer) {
  var pad = buffer[buffer.length - 1];
  for (var i = buffer.length - pad; i < buffer.length; i++)
    assert.equal(buffer[i], pad);

  return buffer.slice(0, buffer.length - pad);
};

DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) {
  var l = lStart;
  var r = rStart;

  // Apply f() x16 times
  for (var i = 0; i < state.keys.length; i += 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(r, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = r;
    r = (l ^ f) >>> 0;
    l = t;
  }

  // Reverse Initial Permutation
  utils.rip(r, l, out, off);
};

DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) {
  var l = rStart;
  var r = lStart;

  // Apply f() x16 times
  for (var i = state.keys.length - 2; i >= 0; i -= 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(l, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = l;
    l = (r ^ f) >>> 0;
    r = t;
  }

  // Reverse Initial Permutation
  utils.rip(l, r, out, off);
};

},{"../des":57,"inherits":100,"minimalistic-assert":105}],61:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var Cipher = des.Cipher;
var DES = des.DES;

function EDEState(type, key) {
  assert.equal(key.length, 24, 'Invalid key length');

  var k1 = key.slice(0, 8);
  var k2 = key.slice(8, 16);
  var k3 = key.slice(16, 24);

  if (type === 'encrypt') {
    this.ciphers = [
      DES.create({ type: 'encrypt', key: k1 }),
      DES.create({ type: 'decrypt', key: k2 }),
      DES.create({ type: 'encrypt', key: k3 })
    ];
  } else {
    this.ciphers = [
      DES.create({ type: 'decrypt', key: k3 }),
      DES.create({ type: 'encrypt', key: k2 }),
      DES.create({ type: 'decrypt', key: k1 })
    ];
  }
}

function EDE(options) {
  Cipher.call(this, options);

  var state = new EDEState(this.type, this.options.key);
  this._edeState = state;
}
inherits(EDE, Cipher);

module.exports = EDE;

EDE.create = function create(options) {
  return new EDE(options);
};

EDE.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._edeState;

  state.ciphers[0]._update(inp, inOff, out, outOff);
  state.ciphers[1]._update(out, outOff, out, outOff);
  state.ciphers[2]._update(out, outOff, out, outOff);
};

EDE.prototype._pad = DES.prototype._pad;
EDE.prototype._unpad = DES.prototype._unpad;

},{"../des":57,"inherits":100,"minimalistic-assert":105}],62:[function(require,module,exports){
'use strict';

exports.readUInt32BE = function readUInt32BE(bytes, off) {
  var res =  (bytes[0 + off] << 24) |
             (bytes[1 + off] << 16) |
             (bytes[2 + off] << 8) |
             bytes[3 + off];
  return res >>> 0;
};

exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) {
  bytes[0 + off] = value >>> 24;
  bytes[1 + off] = (value >>> 16) & 0xff;
  bytes[2 + off] = (value >>> 8) & 0xff;
  bytes[3 + off] = value & 0xff;
};

exports.ip = function ip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
    }
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.rip = function rip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 0; i < 4; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }
  for (var i = 4; i < 8; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.pc1 = function pc1(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  // 7, 15, 23, 31, 39, 47, 55, 63
  // 6, 14, 22, 30, 39, 47, 55, 63
  // 5, 13, 21, 29, 39, 47, 55, 63
  // 4, 12, 20, 28
  for (var i = 7; i >= 5; i--) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outL <<= 1;
    outL |= (inR >> (j + i)) & 1;
  }

  // 1, 9, 17, 25, 33, 41, 49, 57
  // 2, 10, 18, 26, 34, 42, 50, 58
  // 3, 11, 19, 27, 35, 43, 51, 59
  // 36, 44, 52, 60
  for (var i = 1; i <= 3; i++) {
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outR <<= 1;
    outR |= (inL >> (j + i)) & 1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.r28shl = function r28shl(num, shift) {
  return ((num << shift) & 0xfffffff) | (num >>> (28 - shift));
};

var pc2table = [
  // inL => outL
  14, 11, 17, 4, 27, 23, 25, 0,
  13, 22, 7, 18, 5, 9, 16, 24,
  2, 20, 12, 21, 1, 8, 15, 26,

  // inR => outR
  15, 4, 25, 19, 9, 1, 26, 16,
  5, 11, 23, 8, 12, 7, 17, 0,
  22, 3, 10, 14, 6, 20, 27, 24
];

exports.pc2 = function pc2(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  var len = pc2table.length >>> 1;
  for (var i = 0; i < len; i++) {
    outL <<= 1;
    outL |= (inL >>> pc2table[i]) & 0x1;
  }
  for (var i = len; i < pc2table.length; i++) {
    outR <<= 1;
    outR |= (inR >>> pc2table[i]) & 0x1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.expand = function expand(r, out, off) {
  var outL = 0;
  var outR = 0;

  outL = ((r & 1) << 5) | (r >>> 27);
  for (var i = 23; i >= 15; i -= 4) {
    outL <<= 6;
    outL |= (r >>> i) & 0x3f;
  }
  for (var i = 11; i >= 3; i -= 4) {
    outR |= (r >>> i) & 0x3f;
    outR <<= 6;
  }
  outR |= ((r & 0x1f) << 1) | (r >>> 31);

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

var sTable = [
  14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
  3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
  4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
  15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13,

  15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
  9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
  0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
  5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9,

  10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
  1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
  13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
  11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12,

  7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
  1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
  10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
  15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14,

  2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
  8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
  4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
  15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3,

  12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
  0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
  9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
  7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13,

  4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
  3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
  1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
  10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12,

  13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
  10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
  7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
  0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
];

exports.substitute = function substitute(inL, inR) {
  var out = 0;
  for (var i = 0; i < 4; i++) {
    var b = (inL >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  for (var i = 0; i < 4; i++) {
    var b = (inR >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[4 * 0x40 + i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  return out >>> 0;
};

var permuteTable = [
  16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22,
  30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7
];

exports.permute = function permute(num) {
  var out = 0;
  for (var i = 0; i < permuteTable.length; i++) {
    out <<= 1;
    out |= (num >>> permuteTable[i]) & 0x1;
  }
  return out >>> 0;
};

exports.padSplit = function padSplit(num, size, group) {
  var str = num.toString(2);
  while (str.length < size)
    str = '0' + str;

  var out = [];
  for (var i = 0; i < size; i += group)
    out.push(str.slice(i, i + group));
  return out.join(' ');
};

},{}],63:[function(require,module,exports){
(function (Buffer){
var generatePrime = require('./lib/generatePrime')
var primes = require('./lib/primes.json')

var DH = require('./lib/dh')

function getDiffieHellman (mod) {
  var prime = new Buffer(primes[mod].prime, 'hex')
  var gen = new Buffer(primes[mod].gen, 'hex')

  return new DH(prime, gen)
}

var ENCODINGS = {
  'binary': true, 'hex': true, 'base64': true
}

function createDiffieHellman (prime, enc, generator, genc) {
  if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) {
    return createDiffieHellman(prime, 'binary', enc, generator)
  }

  enc = enc || 'binary'
  genc = genc || 'binary'
  generator = generator || new Buffer([2])

  if (!Buffer.isBuffer(generator)) {
    generator = new Buffer(generator, genc)
  }

  if (typeof prime === 'number') {
    return new DH(generatePrime(prime, generator), generator, true)
  }

  if (!Buffer.isBuffer(prime)) {
    prime = new Buffer(prime, enc)
  }

  return new DH(prime, generator, true)
}

exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman
exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman

}).call(this,require("buffer").Buffer)
},{"./lib/dh":64,"./lib/generatePrime":65,"./lib/primes.json":66,"buffer":48}],64:[function(require,module,exports){
(function (Buffer){
var BN = require('bn.js');
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var TWENTYFOUR = new BN(24);
var ELEVEN = new BN(11);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var primes = require('./generatePrime');
var randomBytes = require('randombytes');
module.exports = DH;

function setPublicKey(pub, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(pub)) {
    pub = new Buffer(pub, enc);
  }
  this._pub = new BN(pub);
  return this;
}

function setPrivateKey(priv, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(priv)) {
    priv = new Buffer(priv, enc);
  }
  this._priv = new BN(priv);
  return this;
}

var primeCache = {};
function checkPrime(prime, generator) {
  var gen = generator.toString('hex');
  var hex = [gen, prime.toString(16)].join('_');
  if (hex in primeCache) {
    return primeCache[hex];
  }
  var error = 0;

  if (prime.isEven() ||
    !primes.simpleSieve ||
    !primes.fermatTest(prime) ||
    !millerRabin.test(prime)) {
    //not a prime so +1
    error += 1;

    if (gen === '02' || gen === '05') {
      // we'd be able to check the generator
      // it would fail so +8
      error += 8;
    } else {
      //we wouldn't be able to test the generator
      // so +4
      error += 4;
    }
    primeCache[hex] = error;
    return error;
  }
  if (!millerRabin.test(prime.shrn(1))) {
    //not a safe prime
    error += 2;
  }
  var rem;
  switch (gen) {
    case '02':
      if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) {
        // unsuidable generator
        error += 8;
      }
      break;
    case '05':
      rem = prime.mod(TEN);
      if (rem.cmp(THREE) && rem.cmp(SEVEN)) {
        // prime mod 10 needs to equal 3 or 7
        error += 8;
      }
      break;
    default:
      error += 4;
  }
  primeCache[hex] = error;
  return error;
}

function DH(prime, generator, malleable) {
  this.setGenerator(generator);
  this.__prime = new BN(prime);
  this._prime = BN.mont(this.__prime);
  this._primeLen = prime.length;
  this._pub = undefined;
  this._priv = undefined;
  this._primeCode = undefined;
  if (malleable) {
    this.setPublicKey = setPublicKey;
    this.setPrivateKey = setPrivateKey;
  } else {
    this._primeCode = 8;
  }
}
Object.defineProperty(DH.prototype, 'verifyError', {
  enumerable: true,
  get: function () {
    if (typeof this._primeCode !== 'number') {
      this._primeCode = checkPrime(this.__prime, this.__gen);
    }
    return this._primeCode;
  }
});
DH.prototype.generateKeys = function () {
  if (!this._priv) {
    this._priv = new BN(randomBytes(this._primeLen));
  }
  this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed();
  return this.getPublicKey();
};

DH.prototype.computeSecret = function (other) {
  other = new BN(other);
  other = other.toRed(this._prime);
  var secret = other.redPow(this._priv).fromRed();
  var out = new Buffer(secret.toArray());
  var prime = this.getPrime();
  if (out.length < prime.length) {
    var front = new Buffer(prime.length - out.length);
    front.fill(0);
    out = Buffer.concat([front, out]);
  }
  return out;
};

DH.prototype.getPublicKey = function getPublicKey(enc) {
  return formatReturnValue(this._pub, enc);
};

DH.prototype.getPrivateKey = function getPrivateKey(enc) {
  return formatReturnValue(this._priv, enc);
};

DH.prototype.getPrime = function (enc) {
  return formatReturnValue(this.__prime, enc);
};

DH.prototype.getGenerator = function (enc) {
  return formatReturnValue(this._gen, enc);
};

DH.prototype.setGenerator = function (gen, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(gen)) {
    gen = new Buffer(gen, enc);
  }
  this.__gen = gen;
  this._gen = new BN(gen);
  return this;
};

function formatReturnValue(bn, enc) {
  var buf = new Buffer(bn.toArray());
  if (!enc) {
    return buf;
  } else {
    return buf.toString(enc);
  }
}

}).call(this,require("buffer").Buffer)
},{"./generatePrime":65,"bn.js":17,"buffer":48,"miller-rabin":104,"randombytes":126}],65:[function(require,module,exports){
var randomBytes = require('randombytes');
module.exports = findPrime;
findPrime.simpleSieve = simpleSieve;
findPrime.fermatTest = fermatTest;
var BN = require('bn.js');
var TWENTYFOUR = new BN(24);
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var ONE = new BN(1);
var TWO = new BN(2);
var FIVE = new BN(5);
var SIXTEEN = new BN(16);
var EIGHT = new BN(8);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var ELEVEN = new BN(11);
var FOUR = new BN(4);
var TWELVE = new BN(12);
var primes = null;

function _getPrimes() {
  if (primes !== null)
    return primes;

  var limit = 0x100000;
  var res = [];
  res[0] = 2;
  for (var i = 1, k = 3; k < limit; k += 2) {
    var sqrt = Math.ceil(Math.sqrt(k));
    for (var j = 0; j < i && res[j] <= sqrt; j++)
      if (k % res[j] === 0)
        break;

    if (i !== j && res[j] <= sqrt)
      continue;

    res[i++] = k;
  }
  primes = res;
  return res;
}

function simpleSieve(p) {
  var primes = _getPrimes();

  for (var i = 0; i < primes.length; i++)
    if (p.modn(primes[i]) === 0) {
      if (p.cmpn(primes[i]) === 0) {
        return true;
      } else {
        return false;
      }
    }

  return true;
}

function fermatTest(p) {
  var red = BN.mont(p);
  return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0;
}

function findPrime(bits, gen) {
  if (bits < 16) {
    // this is what openssl does
    if (gen === 2 || gen === 5) {
      return new BN([0x8c, 0x7b]);
    } else {
      return new BN([0x8c, 0x27]);
    }
  }
  gen = new BN(gen);

  var num, n2;

  while (true) {
    num = new BN(randomBytes(Math.ceil(bits / 8)));
    while (num.bitLength() > bits) {
      num.ishrn(1);
    }
    if (num.isEven()) {
      num.iadd(ONE);
    }
    if (!num.testn(1)) {
      num.iadd(TWO);
    }
    if (!gen.cmp(TWO)) {
      while (num.mod(TWENTYFOUR).cmp(ELEVEN)) {
        num.iadd(FOUR);
      }
    } else if (!gen.cmp(FIVE)) {
      while (num.mod(TEN).cmp(THREE)) {
        num.iadd(FOUR);
      }
    }
    n2 = num.shrn(1);
    if (simpleSieve(n2) && simpleSieve(num) &&
      fermatTest(n2) && fermatTest(num) &&
      millerRabin.test(n2) && millerRabin.test(num)) {
      return num;
    }
  }

}

},{"bn.js":17,"miller-rabin":104,"randombytes":126}],66:[function(require,module,exports){
module.exports={
    "modp1": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff"
    },
    "modp2": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff"
    },
    "modp5": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff"
    },
    "modp14": {
        "gen": "02",
        "prime": "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"
    },
    "modp15": {
        "gen": "02",
        "prime": "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"
    },
    "modp16": {
        "gen": "02",
        "prime": "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"
    },
    "modp17": {
        "gen": "02",
        "prime": "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"
    },
    "modp18": {
        "gen": "02",
        "prime": "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"
    }
}
},{}],67:[function(require,module,exports){
'use strict';

var elliptic = exports;

elliptic.version = require('../package.json').version;
elliptic.utils = require('./elliptic/utils');
elliptic.rand = require('brorand');
elliptic.curve = require('./elliptic/curve');
elliptic.curves = require('./elliptic/curves');

// Protocols
elliptic.ec = require('./elliptic/ec');
elliptic.eddsa = require('./elliptic/eddsa');

},{"../package.json":82,"./elliptic/curve":70,"./elliptic/curves":73,"./elliptic/ec":74,"./elliptic/eddsa":77,"./elliptic/utils":81,"brorand":18}],68:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var getNAF = utils.getNAF;
var getJSF = utils.getJSF;
var assert = utils.assert;

function BaseCurve(type, conf) {
  this.type = type;
  this.p = new BN(conf.p, 16);

  // Use Montgomery, when there is no fast reduction for the prime
  this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p);

  // Useful for many curves
  this.zero = new BN(0).toRed(this.red);
  this.one = new BN(1).toRed(this.red);
  this.two = new BN(2).toRed(this.red);

  // Curve configuration, optional
  this.n = conf.n && new BN(conf.n, 16);
  this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed);

  // Temporary arrays
  this._wnafT1 = new Array(4);
  this._wnafT2 = new Array(4);
  this._wnafT3 = new Array(4);
  this._wnafT4 = new Array(4);

  // Generalized Greg Maxwell's trick
  var adjustCount = this.n && this.p.div(this.n);
  if (!adjustCount || adjustCount.cmpn(100) > 0) {
    this.redN = null;
  } else {
    this._maxwellTrick = true;
    this.redN = this.n.toRed(this.red);
  }
}
module.exports = BaseCurve;

BaseCurve.prototype.point = function point() {
  throw new Error('Not implemented');
};

BaseCurve.prototype.validate = function validate() {
  throw new Error('Not implemented');
};

BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
  assert(p.precomputed);
  var doubles = p._getDoubles();

  var naf = getNAF(k, 1);
  var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1);
  I /= 3;

  // Translate into more windowed form
  var repr = [];
  for (var j = 0; j < naf.length; j += doubles.step) {
    var nafW = 0;
    for (var k = j + doubles.step - 1; k >= j; k--)
      nafW = (nafW << 1) + naf[k];
    repr.push(nafW);
  }

  var a = this.jpoint(null, null, null);
  var b = this.jpoint(null, null, null);
  for (var i = I; i > 0; i--) {
    for (var j = 0; j < repr.length; j++) {
      var nafW = repr[j];
      if (nafW === i)
        b = b.mixedAdd(doubles.points[j]);
      else if (nafW === -i)
        b = b.mixedAdd(doubles.points[j].neg());
    }
    a = a.add(b);
  }
  return a.toP();
};

BaseCurve.prototype._wnafMul = function _wnafMul(p, k) {
  var w = 4;

  // Precompute window
  var nafPoints = p._getNAFPoints(w);
  w = nafPoints.wnd;
  var wnd = nafPoints.points;

  // Get NAF form
  var naf = getNAF(k, w);

  // Add `this`*(N+1) for every w-NAF index
  var acc = this.jpoint(null, null, null);
  for (var i = naf.length - 1; i >= 0; i--) {
    // Count zeroes
    for (var k = 0; i >= 0 && naf[i] === 0; i--)
      k++;
    if (i >= 0)
      k++;
    acc = acc.dblp(k);

    if (i < 0)
      break;
    var z = naf[i];
    assert(z !== 0);
    if (p.type === 'affine') {
      // J +- P
      if (z > 0)
        acc = acc.mixedAdd(wnd[(z - 1) >> 1]);
      else
        acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg());
    } else {
      // J +- J
      if (z > 0)
        acc = acc.add(wnd[(z - 1) >> 1]);
      else
        acc = acc.add(wnd[(-z - 1) >> 1].neg());
    }
  }
  return p.type === 'affine' ? acc.toP() : acc;
};

BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW,
                                                       points,
                                                       coeffs,
                                                       len,
                                                       jacobianResult) {
  var wndWidth = this._wnafT1;
  var wnd = this._wnafT2;
  var naf = this._wnafT3;

  // Fill all arrays
  var max = 0;
  for (var i = 0; i < len; i++) {
    var p = points[i];
    var nafPoints = p._getNAFPoints(defW);
    wndWidth[i] = nafPoints.wnd;
    wnd[i] = nafPoints.points;
  }

  // Comb small window NAFs
  for (var i = len - 1; i >= 1; i -= 2) {
    var a = i - 1;
    var b = i;
    if (wndWidth[a] !== 1 || wndWidth[b] !== 1) {
      naf[a] = getNAF(coeffs[a], wndWidth[a]);
      naf[b] = getNAF(coeffs[b], wndWidth[b]);
      max = Math.max(naf[a].length, max);
      max = Math.max(naf[b].length, max);
      continue;
    }

    var comb = [
      points[a], /* 1 */
      null, /* 3 */
      null, /* 5 */
      points[b] /* 7 */
    ];

    // Try to avoid Projective points, if possible
    if (points[a].y.cmp(points[b].y) === 0) {
      comb[1] = points[a].add(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].add(points[b].neg());
    } else {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    }

    var index = [
      -3, /* -1 -1 */
      -1, /* -1 0 */
      -5, /* -1 1 */
      -7, /* 0 -1 */
      0, /* 0 0 */
      7, /* 0 1 */
      5, /* 1 -1 */
      1, /* 1 0 */
      3  /* 1 1 */
    ];

    var jsf = getJSF(coeffs[a], coeffs[b]);
    max = Math.max(jsf[0].length, max);
    naf[a] = new Array(max);
    naf[b] = new Array(max);
    for (var j = 0; j < max; j++) {
      var ja = jsf[0][j] | 0;
      var jb = jsf[1][j] | 0;

      naf[a][j] = index[(ja + 1) * 3 + (jb + 1)];
      naf[b][j] = 0;
      wnd[a] = comb;
    }
  }

  var acc = this.jpoint(null, null, null);
  var tmp = this._wnafT4;
  for (var i = max; i >= 0; i--) {
    var k = 0;

    while (i >= 0) {
      var zero = true;
      for (var j = 0; j < len; j++) {
        tmp[j] = naf[j][i] | 0;
        if (tmp[j] !== 0)
          zero = false;
      }
      if (!zero)
        break;
      k++;
      i--;
    }
    if (i >= 0)
      k++;
    acc = acc.dblp(k);
    if (i < 0)
      break;

    for (var j = 0; j < len; j++) {
      var z = tmp[j];
      var p;
      if (z === 0)
        continue;
      else if (z > 0)
        p = wnd[j][(z - 1) >> 1];
      else if (z < 0)
        p = wnd[j][(-z - 1) >> 1].neg();

      if (p.type === 'affine')
        acc = acc.mixedAdd(p);
      else
        acc = acc.add(p);
    }
  }
  // Zeroify references
  for (var i = 0; i < len; i++)
    wnd[i] = null;

  if (jacobianResult)
    return acc;
  else
    return acc.toP();
};

function BasePoint(curve, type) {
  this.curve = curve;
  this.type = type;
  this.precomputed = null;
}
BaseCurve.BasePoint = BasePoint;

BasePoint.prototype.eq = function eq(/*other*/) {
  throw new Error('Not implemented');
};

BasePoint.prototype.validate = function validate() {
  return this.curve.validate(this);
};

BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  bytes = utils.toArray(bytes, enc);

  var len = this.p.byteLength();

  // uncompressed, hybrid-odd, hybrid-even
  if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) &&
      bytes.length - 1 === 2 * len) {
    if (bytes[0] === 0x06)
      assert(bytes[bytes.length - 1] % 2 === 0);
    else if (bytes[0] === 0x07)
      assert(bytes[bytes.length - 1] % 2 === 1);

    var res =  this.point(bytes.slice(1, 1 + len),
                          bytes.slice(1 + len, 1 + 2 * len));

    return res;
  } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) &&
              bytes.length - 1 === len) {
    return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03);
  }
  throw new Error('Unknown point format');
};

BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) {
  return this.encode(enc, true);
};

BasePoint.prototype._encode = function _encode(compact) {
  var len = this.curve.p.byteLength();
  var x = this.getX().toArray('be', len);

  if (compact)
    return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x);

  return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ;
};

BasePoint.prototype.encode = function encode(enc, compact) {
  return utils.encode(this._encode(compact), enc);
};

BasePoint.prototype.precompute = function precompute(power) {
  if (this.precomputed)
    return this;

  var precomputed = {
    doubles: null,
    naf: null,
    beta: null
  };
  precomputed.naf = this._getNAFPoints(8);
  precomputed.doubles = this._getDoubles(4, power);
  precomputed.beta = this._getBeta();
  this.precomputed = precomputed;

  return this;
};

BasePoint.prototype._hasDoubles = function _hasDoubles(k) {
  if (!this.precomputed)
    return false;

  var doubles = this.precomputed.doubles;
  if (!doubles)
    return false;

  return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step);
};

BasePoint.prototype._getDoubles = function _getDoubles(step, power) {
  if (this.precomputed && this.precomputed.doubles)
    return this.precomputed.doubles;

  var doubles = [ this ];
  var acc = this;
  for (var i = 0; i < power; i += step) {
    for (var j = 0; j < step; j++)
      acc = acc.dbl();
    doubles.push(acc);
  }
  return {
    step: step,
    points: doubles
  };
};

BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) {
  if (this.precomputed && this.precomputed.naf)
    return this.precomputed.naf;

  var res = [ this ];
  var max = (1 << wnd) - 1;
  var dbl = max === 1 ? null : this.dbl();
  for (var i = 1; i < max; i++)
    res[i] = res[i - 1].add(dbl);
  return {
    wnd: wnd,
    points: res
  };
};

BasePoint.prototype._getBeta = function _getBeta() {
  return null;
};

BasePoint.prototype.dblp = function dblp(k) {
  var r = this;
  for (var i = 0; i < k; i++)
    r = r.dbl();
  return r;
};

},{"../utils":81,"bn.js":17}],69:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var assert = utils.assert;

function EdwardsCurve(conf) {
  // NOTE: Important as we are creating point in Base.call()
  this.twisted = (conf.a | 0) !== 1;
  this.mOneA = this.twisted && (conf.a | 0) === -1;
  this.extended = this.mOneA;

  Base.call(this, 'edwards', conf);

  this.a = new BN(conf.a, 16).umod(this.red.m);
  this.a = this.a.toRed(this.red);
  this.c = new BN(conf.c, 16).toRed(this.red);
  this.c2 = this.c.redSqr();
  this.d = new BN(conf.d, 16).toRed(this.red);
  this.dd = this.d.redAdd(this.d);

  assert(!this.twisted || this.c.fromRed().cmpn(1) === 0);
  this.oneC = (conf.c | 0) === 1;
}
inherits(EdwardsCurve, Base);
module.exports = EdwardsCurve;

EdwardsCurve.prototype._mulA = function _mulA(num) {
  if (this.mOneA)
    return num.redNeg();
  else
    return this.a.redMul(num);
};

EdwardsCurve.prototype._mulC = function _mulC(num) {
  if (this.oneC)
    return num;
  else
    return this.c.redMul(num);
};

// Just for compatibility with Short curve
EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
  return this.point(x, y, z, t);
};

EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var x2 = x.redSqr();
  var rhs = this.c2.redSub(this.a.redMul(x2));
  var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2));

  var y2 = rhs.redMul(lhs.redInvm());
  var y = y2.redSqrt();
  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) {
  y = new BN(y, 16);
  if (!y.red)
    y = y.toRed(this.red);

  // x^2 = (y^2 - c^2) / (c^2 d y^2 - a)
  var y2 = y.redSqr();
  var lhs = y2.redSub(this.c2);
  var rhs = y2.redMul(this.d).redMul(this.c2).redSub(this.a);
  var x2 = lhs.redMul(rhs.redInvm());

  if (x2.cmp(this.zero) === 0) {
    if (odd)
      throw new Error('invalid point');
    else
      return this.point(this.zero, y);
  }

  var x = x2.redSqrt();
  if (x.redSqr().redSub(x2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  if (x.fromRed().isOdd() !== odd)
    x = x.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.validate = function validate(point) {
  if (point.isInfinity())
    return true;

  // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2)
  point.normalize();

  var x2 = point.x.redSqr();
  var y2 = point.y.redSqr();
  var lhs = x2.redMul(this.a).redAdd(y2);
  var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2)));

  return lhs.cmp(rhs) === 0;
};

function Point(curve, x, y, z, t) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && y === null && z === null) {
    this.x = this.curve.zero;
    this.y = this.curve.one;
    this.z = this.curve.one;
    this.t = this.curve.zero;
    this.zOne = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = z ? new BN(z, 16) : this.curve.one;
    this.t = t && new BN(t, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
    if (this.t && !this.t.red)
      this.t = this.t.toRed(this.curve.red);
    this.zOne = this.z === this.curve.one;

    // Use extended coordinates
    if (this.curve.extended && !this.t) {
      this.t = this.x.redMul(this.y);
      if (!this.zOne)
        this.t = this.t.redMul(this.z.redInvm());
    }
  }
}
inherits(Point, Base.BasePoint);

EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

EdwardsCurve.prototype.point = function point(x, y, z, t) {
  return new Point(this, x, y, z, t);
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1], obj[2]);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.x.cmpn(0) === 0 &&
    (this.y.cmp(this.z) === 0 ||
    (this.zOne && this.y.cmp(this.curve.c) === 0));
};

Point.prototype._extDbl = function _extDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #doubling-dbl-2008-hwcd
  // 4M + 4S

  // A = X1^2
  var a = this.x.redSqr();
  // B = Y1^2
  var b = this.y.redSqr();
  // C = 2 * Z1^2
  var c = this.z.redSqr();
  c = c.redIAdd(c);
  // D = a * A
  var d = this.curve._mulA(a);
  // E = (X1 + Y1)^2 - A - B
  var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b);
  // G = D + B
  var g = d.redAdd(b);
  // F = G - C
  var f = g.redSub(c);
  // H = D - B
  var h = d.redSub(b);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projDbl = function _projDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #doubling-dbl-2008-bbjlp
  //     #doubling-dbl-2007-bl
  // and others
  // Generally 3M + 4S or 2M + 4S

  // B = (X1 + Y1)^2
  var b = this.x.redAdd(this.y).redSqr();
  // C = X1^2
  var c = this.x.redSqr();
  // D = Y1^2
  var d = this.y.redSqr();

  var nx;
  var ny;
  var nz;
  if (this.curve.twisted) {
    // E = a * C
    var e = this.curve._mulA(c);
    // F = E + D
    var f = e.redAdd(d);
    if (this.zOne) {
      // X3 = (B - C - D) * (F - 2)
      nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F^2 - 2 * F
      nz = f.redSqr().redSub(f).redSub(f);
    } else {
      // H = Z1^2
      var h = this.z.redSqr();
      // J = F - 2 * H
      var j = f.redSub(h).redISub(h);
      // X3 = (B-C-D)*J
      nx = b.redSub(c).redISub(d).redMul(j);
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F * J
      nz = f.redMul(j);
    }
  } else {
    // E = C + D
    var e = c.redAdd(d);
    // H = (c * Z1)^2
    var h = this.curve._mulC(this.z).redSqr();
    // J = E - 2 * H
    var j = e.redSub(h).redSub(h);
    // X3 = c * (B - E) * J
    nx = this.curve._mulC(b.redISub(e)).redMul(j);
    // Y3 = c * E * (C - D)
    ny = this.curve._mulC(e).redMul(c.redISub(d));
    // Z3 = E * J
    nz = e.redMul(j);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  // Double in extended coordinates
  if (this.curve.extended)
    return this._extDbl();
  else
    return this._projDbl();
};

Point.prototype._extAdd = function _extAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #addition-add-2008-hwcd-3
  // 8M

  // A = (Y1 - X1) * (Y2 - X2)
  var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x));
  // B = (Y1 + X1) * (Y2 + X2)
  var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x));
  // C = T1 * k * T2
  var c = this.t.redMul(this.curve.dd).redMul(p.t);
  // D = Z1 * 2 * Z2
  var d = this.z.redMul(p.z.redAdd(p.z));
  // E = B - A
  var e = b.redSub(a);
  // F = D - C
  var f = d.redSub(c);
  // G = D + C
  var g = d.redAdd(c);
  // H = B + A
  var h = b.redAdd(a);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projAdd = function _projAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #addition-add-2008-bbjlp
  //     #addition-add-2007-bl
  // 10M + 1S

  // A = Z1 * Z2
  var a = this.z.redMul(p.z);
  // B = A^2
  var b = a.redSqr();
  // C = X1 * X2
  var c = this.x.redMul(p.x);
  // D = Y1 * Y2
  var d = this.y.redMul(p.y);
  // E = d * C * D
  var e = this.curve.d.redMul(c).redMul(d);
  // F = B - E
  var f = b.redSub(e);
  // G = B + E
  var g = b.redAdd(e);
  // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D)
  var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d);
  var nx = a.redMul(f).redMul(tmp);
  var ny;
  var nz;
  if (this.curve.twisted) {
    // Y3 = A * G * (D - a * C)
    ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
    // Z3 = F * G
    nz = f.redMul(g);
  } else {
    // Y3 = A * G * (D - C)
    ny = a.redMul(g).redMul(d.redSub(c));
    // Z3 = c * F * G
    nz = this.curve._mulC(f).redMul(g);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.add = function add(p) {
  if (this.isInfinity())
    return p;
  if (p.isInfinity())
    return this;

  if (this.curve.extended)
    return this._extAdd(p);
  else
    return this._projAdd(p);
};

Point.prototype.mul = function mul(k) {
  if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p, k2) {
  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false);
};

Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) {
  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true);
};

Point.prototype.normalize = function normalize() {
  if (this.zOne)
    return this;

  // Normalize coordinates
  var zi = this.z.redInvm();
  this.x = this.x.redMul(zi);
  this.y = this.y.redMul(zi);
  if (this.t)
    this.t = this.t.redMul(zi);
  this.z = this.curve.one;
  this.zOne = true;
  return this;
};

Point.prototype.neg = function neg() {
  return this.curve.point(this.x.redNeg(),
                          this.y,
                          this.z,
                          this.t && this.t.redNeg());
};

Point.prototype.getX = function getX() {
  this.normalize();
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  this.normalize();
  return this.y.fromRed();
};

Point.prototype.eq = function eq(other) {
  return this === other ||
         this.getX().cmp(other.getX()) === 0 &&
         this.getY().cmp(other.getY()) === 0;
};

Point.prototype.eqXToP = function eqXToP(x) {
  var rx = x.toRed(this.curve.red).redMul(this.z);
  if (this.x.cmp(rx) === 0)
    return true;

  var xc = x.clone();
  var t = this.curve.redN.redMul(this.z);
  for (;;) {
    xc.iadd(this.curve.n);
    if (xc.cmp(this.curve.p) >= 0)
      return false;

    rx.redIAdd(t);
    if (this.x.cmp(rx) === 0)
      return true;
  }
};

// Compatibility with BaseCurve
Point.prototype.toP = Point.prototype.normalize;
Point.prototype.mixedAdd = Point.prototype.add;

},{"../utils":81,"./base":68,"bn.js":17,"inherits":100}],70:[function(require,module,exports){
'use strict';

var curve = exports;

curve.base = require('./base');
curve.short = require('./short');
curve.mont = require('./mont');
curve.edwards = require('./edwards');

},{"./base":68,"./edwards":69,"./mont":71,"./short":72}],71:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var utils = require('../utils');

function MontCurve(conf) {
  Base.call(this, 'mont', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.i4 = new BN(4).toRed(this.red).redInvm();
  this.two = new BN(2).toRed(this.red);
  this.a24 = this.i4.redMul(this.a.redAdd(this.two));
}
inherits(MontCurve, Base);
module.exports = MontCurve;

MontCurve.prototype.validate = function validate(point) {
  var x = point.normalize().x;
  var x2 = x.redSqr();
  var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x);
  var y = rhs.redSqrt();

  return y.redSqr().cmp(rhs) === 0;
};

function Point(curve, x, z) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && z === null) {
    this.x = this.curve.one;
    this.z = this.curve.zero;
  } else {
    this.x = new BN(x, 16);
    this.z = new BN(z, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
  }
}
inherits(Point, Base.BasePoint);

MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  return this.point(utils.toArray(bytes, enc), 1);
};

MontCurve.prototype.point = function point(x, z) {
  return new Point(this, x, z);
};

MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

Point.prototype.precompute = function precompute() {
  // No-op
};

Point.prototype._encode = function _encode() {
  return this.getX().toArray('be', this.curve.p.byteLength());
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1] || curve.one);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

Point.prototype.dbl = function dbl() {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3
  // 2M + 2S + 4A

  // A = X1 + Z1
  var a = this.x.redAdd(this.z);
  // AA = A^2
  var aa = a.redSqr();
  // B = X1 - Z1
  var b = this.x.redSub(this.z);
  // BB = B^2
  var bb = b.redSqr();
  // C = AA - BB
  var c = aa.redSub(bb);
  // X3 = AA * BB
  var nx = aa.redMul(bb);
  // Z3 = C * (BB + A24 * C)
  var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c)));
  return this.curve.point(nx, nz);
};

Point.prototype.add = function add() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.diffAdd = function diffAdd(p, diff) {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3
  // 4M + 2S + 6A

  // A = X2 + Z2
  var a = this.x.redAdd(this.z);
  // B = X2 - Z2
  var b = this.x.redSub(this.z);
  // C = X3 + Z3
  var c = p.x.redAdd(p.z);
  // D = X3 - Z3
  var d = p.x.redSub(p.z);
  // DA = D * A
  var da = d.redMul(a);
  // CB = C * B
  var cb = c.redMul(b);
  // X5 = Z1 * (DA + CB)^2
  var nx = diff.z.redMul(da.redAdd(cb).redSqr());
  // Z5 = X1 * (DA - CB)^2
  var nz = diff.x.redMul(da.redISub(cb).redSqr());
  return this.curve.point(nx, nz);
};

Point.prototype.mul = function mul(k) {
  var t = k.clone();
  var a = this; // (N / 2) * Q + Q
  var b = this.curve.point(null, null); // (N / 2) * Q
  var c = this; // Q

  for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1))
    bits.push(t.andln(1));

  for (var i = bits.length - 1; i >= 0; i--) {
    if (bits[i] === 0) {
      // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q
      a = a.diffAdd(b, c);
      // N * Q = 2 * ((N / 2) * Q + Q))
      b = b.dbl();
    } else {
      // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q)
      b = a.diffAdd(b, c);
      // N * Q + Q = 2 * ((N / 2) * Q + Q)
      a = a.dbl();
    }
  }
  return b;
};

Point.prototype.mulAdd = function mulAdd() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.jumlAdd = function jumlAdd() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.eq = function eq(other) {
  return this.getX().cmp(other.getX()) === 0;
};

Point.prototype.normalize = function normalize() {
  this.x = this.x.redMul(this.z.redInvm());
  this.z = this.curve.one;
  return this;
};

Point.prototype.getX = function getX() {
  // Normalize coordinates
  this.normalize();

  return this.x.fromRed();
};

},{"../utils":81,"./base":68,"bn.js":17,"inherits":100}],72:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var assert = utils.assert;

function ShortCurve(conf) {
  Base.call(this, 'short', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.tinv = this.two.redInvm();

  this.zeroA = this.a.fromRed().cmpn(0) === 0;
  this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0;

  // If the curve is endomorphic, precalculate beta and lambda
  this.endo = this._getEndomorphism(conf);
  this._endoWnafT1 = new Array(4);
  this._endoWnafT2 = new Array(4);
}
inherits(ShortCurve, Base);
module.exports = ShortCurve;

ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) {
  // No efficient endomorphism
  if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1)
    return;

  // Compute beta and lambda, that lambda * P = (beta * Px; Py)
  var beta;
  var lambda;
  if (conf.beta) {
    beta = new BN(conf.beta, 16).toRed(this.red);
  } else {
    var betas = this._getEndoRoots(this.p);
    // Choose the smallest beta
    beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1];
    beta = beta.toRed(this.red);
  }
  if (conf.lambda) {
    lambda = new BN(conf.lambda, 16);
  } else {
    // Choose the lambda that is matching selected beta
    var lambdas = this._getEndoRoots(this.n);
    if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) {
      lambda = lambdas[0];
    } else {
      lambda = lambdas[1];
      assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0);
    }
  }

  // Get basis vectors, used for balanced length-two representation
  var basis;
  if (conf.basis) {
    basis = conf.basis.map(function(vec) {
      return {
        a: new BN(vec.a, 16),
        b: new BN(vec.b, 16)
      };
    });
  } else {
    basis = this._getEndoBasis(lambda);
  }

  return {
    beta: beta,
    lambda: lambda,
    basis: basis
  };
};

ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) {
  // Find roots of for x^2 + x + 1 in F
  // Root = (-1 +- Sqrt(-3)) / 2
  //
  var red = num === this.p ? this.red : BN.mont(num);
  var tinv = new BN(2).toRed(red).redInvm();
  var ntinv = tinv.redNeg();

  var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv);

  var l1 = ntinv.redAdd(s).fromRed();
  var l2 = ntinv.redSub(s).fromRed();
  return [ l1, l2 ];
};

ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) {
  // aprxSqrt >= sqrt(this.n)
  var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2));

  // 3.74
  // Run EGCD, until r(L + 1) < aprxSqrt
  var u = lambda;
  var v = this.n.clone();
  var x1 = new BN(1);
  var y1 = new BN(0);
  var x2 = new BN(0);
  var y2 = new BN(1);

  // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n)
  var a0;
  var b0;
  // First vector
  var a1;
  var b1;
  // Second vector
  var a2;
  var b2;

  var prevR;
  var i = 0;
  var r;
  var x;
  while (u.cmpn(0) !== 0) {
    var q = v.div(u);
    r = v.sub(q.mul(u));
    x = x2.sub(q.mul(x1));
    var y = y2.sub(q.mul(y1));

    if (!a1 && r.cmp(aprxSqrt) < 0) {
      a0 = prevR.neg();
      b0 = x1;
      a1 = r.neg();
      b1 = x;
    } else if (a1 && ++i === 2) {
      break;
    }
    prevR = r;

    v = u;
    u = r;
    x2 = x1;
    x1 = x;
    y2 = y1;
    y1 = y;
  }
  a2 = r.neg();
  b2 = x;

  var len1 = a1.sqr().add(b1.sqr());
  var len2 = a2.sqr().add(b2.sqr());
  if (len2.cmp(len1) >= 0) {
    a2 = a0;
    b2 = b0;
  }

  // Normalize signs
  if (a1.negative) {
    a1 = a1.neg();
    b1 = b1.neg();
  }
  if (a2.negative) {
    a2 = a2.neg();
    b2 = b2.neg();
  }

  return [
    { a: a1, b: b1 },
    { a: a2, b: b2 }
  ];
};

ShortCurve.prototype._endoSplit = function _endoSplit(k) {
  var basis = this.endo.basis;
  var v1 = basis[0];
  var v2 = basis[1];

  var c1 = v2.b.mul(k).divRound(this.n);
  var c2 = v1.b.neg().mul(k).divRound(this.n);

  var p1 = c1.mul(v1.a);
  var p2 = c2.mul(v2.a);
  var q1 = c1.mul(v1.b);
  var q2 = c2.mul(v2.b);

  // Calculate answer
  var k1 = k.sub(p1).sub(p2);
  var k2 = q1.add(q2).neg();
  return { k1: k1, k2: k2 };
};

ShortCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b);
  var y = y2.redSqrt();
  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  // XXX Is there any way to tell if the number is odd without converting it
  // to non-red form?
  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

ShortCurve.prototype.validate = function validate(point) {
  if (point.inf)
    return true;

  var x = point.x;
  var y = point.y;

  var ax = this.a.redMul(x);
  var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b);
  return y.redSqr().redISub(rhs).cmpn(0) === 0;
};

ShortCurve.prototype._endoWnafMulAdd =
    function _endoWnafMulAdd(points, coeffs, jacobianResult) {
  var npoints = this._endoWnafT1;
  var ncoeffs = this._endoWnafT2;
  for (var i = 0; i < points.length; i++) {
    var split = this._endoSplit(coeffs[i]);
    var p = points[i];
    var beta = p._getBeta();

    if (split.k1.negative) {
      split.k1.ineg();
      p = p.neg(true);
    }
    if (split.k2.negative) {
      split.k2.ineg();
      beta = beta.neg(true);
    }

    npoints[i * 2] = p;
    npoints[i * 2 + 1] = beta;
    ncoeffs[i * 2] = split.k1;
    ncoeffs[i * 2 + 1] = split.k2;
  }
  var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult);

  // Clean-up references to points and coefficients
  for (var j = 0; j < i * 2; j++) {
    npoints[j] = null;
    ncoeffs[j] = null;
  }
  return res;
};

function Point(curve, x, y, isRed) {
  Base.BasePoint.call(this, curve, 'affine');
  if (x === null && y === null) {
    this.x = null;
    this.y = null;
    this.inf = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    // Force redgomery representation when loading from JSON
    if (isRed) {
      this.x.forceRed(this.curve.red);
      this.y.forceRed(this.curve.red);
    }
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    this.inf = false;
  }
}
inherits(Point, Base.BasePoint);

ShortCurve.prototype.point = function point(x, y, isRed) {
  return new Point(this, x, y, isRed);
};

ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
  return Point.fromJSON(this, obj, red);
};

Point.prototype._getBeta = function _getBeta() {
  if (!this.curve.endo)
    return;

  var pre = this.precomputed;
  if (pre && pre.beta)
    return pre.beta;

  var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y);
  if (pre) {
    var curve = this.curve;
    var endoMul = function(p) {
      return curve.point(p.x.redMul(curve.endo.beta), p.y);
    };
    pre.beta = beta;
    beta.precomputed = {
      beta: null,
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(endoMul)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(endoMul)
      }
    };
  }
  return beta;
};

Point.prototype.toJSON = function toJSON() {
  if (!this.precomputed)
    return [ this.x, this.y ];

  return [ this.x, this.y, this.precomputed && {
    doubles: this.precomputed.doubles && {
      step: this.precomputed.doubles.step,
      points: this.precomputed.doubles.points.slice(1)
    },
    naf: this.precomputed.naf && {
      wnd: this.precomputed.naf.wnd,
      points: this.precomputed.naf.points.slice(1)
    }
  } ];
};

Point.fromJSON = function fromJSON(curve, obj, red) {
  if (typeof obj === 'string')
    obj = JSON.parse(obj);
  var res = curve.point(obj[0], obj[1], red);
  if (!obj[2])
    return res;

  function obj2point(obj) {
    return curve.point(obj[0], obj[1], red);
  }

  var pre = obj[2];
  res.precomputed = {
    beta: null,
    doubles: pre.doubles && {
      step: pre.doubles.step,
      points: [ res ].concat(pre.doubles.points.map(obj2point))
    },
    naf: pre.naf && {
      wnd: pre.naf.wnd,
      points: [ res ].concat(pre.naf.points.map(obj2point))
    }
  };
  return res;
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  return this.inf;
};

Point.prototype.add = function add(p) {
  // O + P = P
  if (this.inf)
    return p;

  // P + O = P
  if (p.inf)
    return this;

  // P + P = 2P
  if (this.eq(p))
    return this.dbl();

  // P + (-P) = O
  if (this.neg().eq(p))
    return this.curve.point(null, null);

  // P + Q = O
  if (this.x.cmp(p.x) === 0)
    return this.curve.point(null, null);

  var c = this.y.redSub(p.y);
  if (c.cmpn(0) !== 0)
    c = c.redMul(this.x.redSub(p.x).redInvm());
  var nx = c.redSqr().redISub(this.x).redISub(p.x);
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.dbl = function dbl() {
  if (this.inf)
    return this;

  // 2P = O
  var ys1 = this.y.redAdd(this.y);
  if (ys1.cmpn(0) === 0)
    return this.curve.point(null, null);

  var a = this.curve.a;

  var x2 = this.x.redSqr();
  var dyinv = ys1.redInvm();
  var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv);

  var nx = c.redSqr().redISub(this.x.redAdd(this.x));
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.getX = function getX() {
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  return this.y.fromRed();
};

Point.prototype.mul = function mul(k) {
  k = new BN(k, 16);
  if (this.isInfinity())
    return this;
  else if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else if (this.curve.endo)
    return this.curve._endoWnafMulAdd([ this ], [ k ]);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p2, k2) {
  var points = [ this, p2 ];
  var coeffs = [ k1, k2 ];
  if (this.curve.endo)
    return this.curve._endoWnafMulAdd(points, coeffs);
  else
    return this.curve._wnafMulAdd(1, points, coeffs, 2);
};

Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) {
  var points = [ this, p2 ];
  var coeffs = [ k1, k2 ];
  if (this.curve.endo)
    return this.curve._endoWnafMulAdd(points, coeffs, true);
  else
    return this.curve._wnafMulAdd(1, points, coeffs, 2, true);
};

Point.prototype.eq = function eq(p) {
  return this === p ||
         this.inf === p.inf &&
             (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0);
};

Point.prototype.neg = function neg(_precompute) {
  if (this.inf)
    return this;

  var res = this.curve.point(this.x, this.y.redNeg());
  if (_precompute && this.precomputed) {
    var pre = this.precomputed;
    var negate = function(p) {
      return p.neg();
    };
    res.precomputed = {
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(negate)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(negate)
      }
    };
  }
  return res;
};

Point.prototype.toJ = function toJ() {
  if (this.inf)
    return this.curve.jpoint(null, null, null);

  var res = this.curve.jpoint(this.x, this.y, this.curve.one);
  return res;
};

function JPoint(curve, x, y, z) {
  Base.BasePoint.call(this, curve, 'jacobian');
  if (x === null && y === null && z === null) {
    this.x = this.curve.one;
    this.y = this.curve.one;
    this.z = new BN(0);
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = new BN(z, 16);
  }
  if (!this.x.red)
    this.x = this.x.toRed(this.curve.red);
  if (!this.y.red)
    this.y = this.y.toRed(this.curve.red);
  if (!this.z.red)
    this.z = this.z.toRed(this.curve.red);

  this.zOne = this.z === this.curve.one;
}
inherits(JPoint, Base.BasePoint);

ShortCurve.prototype.jpoint = function jpoint(x, y, z) {
  return new JPoint(this, x, y, z);
};

JPoint.prototype.toP = function toP() {
  if (this.isInfinity())
    return this.curve.point(null, null);

  var zinv = this.z.redInvm();
  var zinv2 = zinv.redSqr();
  var ax = this.x.redMul(zinv2);
  var ay = this.y.redMul(zinv2).redMul(zinv);

  return this.curve.point(ax, ay);
};

JPoint.prototype.neg = function neg() {
  return this.curve.jpoint(this.x, this.y.redNeg(), this.z);
};

JPoint.prototype.add = function add(p) {
  // O + P = P
  if (this.isInfinity())
    return p;

  // P + O = P
  if (p.isInfinity())
    return this;

  // 12M + 4S + 7A
  var pz2 = p.z.redSqr();
  var z2 = this.z.redSqr();
  var u1 = this.x.redMul(pz2);
  var u2 = p.x.redMul(z2);
  var s1 = this.y.redMul(pz2.redMul(p.z));
  var s2 = p.y.redMul(z2.redMul(this.z));

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(p.z).redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mixedAdd = function mixedAdd(p) {
  // O + P = P
  if (this.isInfinity())
    return p.toJ();

  // P + O = P
  if (p.isInfinity())
    return this;

  // 8M + 3S + 7A
  var z2 = this.z.redSqr();
  var u1 = this.x;
  var u2 = p.x.redMul(z2);
  var s1 = this.y;
  var s2 = p.y.redMul(z2).redMul(this.z);

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.dblp = function dblp(pow) {
  if (pow === 0)
    return this;
  if (this.isInfinity())
    return this;
  if (!pow)
    return this.dbl();

  if (this.curve.zeroA || this.curve.threeA) {
    var r = this;
    for (var i = 0; i < pow; i++)
      r = r.dbl();
    return r;
  }

  // 1M + 2S + 1A + N * (4S + 5M + 8A)
  // N = 1 => 6M + 6S + 9A
  var a = this.curve.a;
  var tinv = this.curve.tinv;

  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  // Reuse results
  var jyd = jy.redAdd(jy);
  for (var i = 0; i < pow; i++) {
    var jx2 = jx.redSqr();
    var jyd2 = jyd.redSqr();
    var jyd4 = jyd2.redSqr();
    var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

    var t1 = jx.redMul(jyd2);
    var nx = c.redSqr().redISub(t1.redAdd(t1));
    var t2 = t1.redISub(nx);
    var dny = c.redMul(t2);
    dny = dny.redIAdd(dny).redISub(jyd4);
    var nz = jyd.redMul(jz);
    if (i + 1 < pow)
      jz4 = jz4.redMul(jyd4);

    jx = nx;
    jz = nz;
    jyd = dny;
  }

  return this.curve.jpoint(jx, jyd.redMul(tinv), jz);
};

JPoint.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  if (this.curve.zeroA)
    return this._zeroDbl();
  else if (this.curve.threeA)
    return this._threeDbl();
  else
    return this._dbl();
};

JPoint.prototype._zeroDbl = function _zeroDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 14A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a; a = 0
    var m = xx.redAdd(xx).redIAdd(xx);
    // T = M ^ 2 - 2*S
    var t = m.redSqr().redISub(s).redISub(s);

    // 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);

    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2*Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-dbl-2009-l
    // 2M + 5S + 13A

    // A = X1^2
    var a = this.x.redSqr();
    // B = Y1^2
    var b = this.y.redSqr();
    // C = B^2
    var c = b.redSqr();
    // D = 2 * ((X1 + B)^2 - A - C)
    var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c);
    d = d.redIAdd(d);
    // E = 3 * A
    var e = a.redAdd(a).redIAdd(a);
    // F = E^2
    var f = e.redSqr();

    // 8 * C
    var c8 = c.redIAdd(c);
    c8 = c8.redIAdd(c8);
    c8 = c8.redIAdd(c8);

    // X3 = F - 2 * D
    nx = f.redISub(d).redISub(d);
    // Y3 = E * (D - X3) - 8 * C
    ny = e.redMul(d.redISub(nx)).redISub(c8);
    // Z3 = 2 * Y1 * Z1
    nz = this.y.redMul(this.z);
    nz = nz.redIAdd(nz);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._threeDbl = function _threeDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 15A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a
    var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a);
    // T = M^2 - 2 * S
    var t = m.redSqr().redISub(s).redISub(s);
    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2 * Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
    // 3M + 5S

    // delta = Z1^2
    var delta = this.z.redSqr();
    // gamma = Y1^2
    var gamma = this.y.redSqr();
    // beta = X1 * gamma
    var beta = this.x.redMul(gamma);
    // alpha = 3 * (X1 - delta) * (X1 + delta)
    var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta));
    alpha = alpha.redAdd(alpha).redIAdd(alpha);
    // X3 = alpha^2 - 8 * beta
    var beta4 = beta.redIAdd(beta);
    beta4 = beta4.redIAdd(beta4);
    var beta8 = beta4.redAdd(beta4);
    nx = alpha.redSqr().redISub(beta8);
    // Z3 = (Y1 + Z1)^2 - gamma - delta
    nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta);
    // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2
    var ggamma8 = gamma.redSqr();
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._dbl = function _dbl() {
  var a = this.curve.a;

  // 4M + 6S + 10A
  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  var jx2 = jx.redSqr();
  var jy2 = jy.redSqr();

  var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

  var jxd4 = jx.redAdd(jx);
  jxd4 = jxd4.redIAdd(jxd4);
  var t1 = jxd4.redMul(jy2);
  var nx = c.redSqr().redISub(t1.redAdd(t1));
  var t2 = t1.redISub(nx);

  var jyd8 = jy2.redSqr();
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  var ny = c.redMul(t2).redISub(jyd8);
  var nz = jy.redAdd(jy).redMul(jz);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.trpl = function trpl() {
  if (!this.curve.zeroA)
    return this.dbl().add(this);

  // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl
  // 5M + 10S + ...

  // XX = X1^2
  var xx = this.x.redSqr();
  // YY = Y1^2
  var yy = this.y.redSqr();
  // ZZ = Z1^2
  var zz = this.z.redSqr();
  // YYYY = YY^2
  var yyyy = yy.redSqr();
  // M = 3 * XX + a * ZZ2; a = 0
  var m = xx.redAdd(xx).redIAdd(xx);
  // MM = M^2
  var mm = m.redSqr();
  // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM
  var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
  e = e.redIAdd(e);
  e = e.redAdd(e).redIAdd(e);
  e = e.redISub(mm);
  // EE = E^2
  var ee = e.redSqr();
  // T = 16*YYYY
  var t = yyyy.redIAdd(yyyy);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  // U = (M + E)^2 - MM - EE - T
  var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t);
  // X3 = 4 * (X1 * EE - 4 * YY * U)
  var yyu4 = yy.redMul(u);
  yyu4 = yyu4.redIAdd(yyu4);
  yyu4 = yyu4.redIAdd(yyu4);
  var nx = this.x.redMul(ee).redISub(yyu4);
  nx = nx.redIAdd(nx);
  nx = nx.redIAdd(nx);
  // Y3 = 8 * Y1 * (U * (T - U) - E * EE)
  var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee)));
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  // Z3 = (Z1 + E)^2 - ZZ - EE
  var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mul = function mul(k, kbase) {
  k = new BN(k, kbase);

  return this.curve._wnafMul(this, k);
};

JPoint.prototype.eq = function eq(p) {
  if (p.type === 'affine')
    return this.eq(p.toJ());

  if (this === p)
    return true;

  // x1 * z2^2 == x2 * z1^2
  var z2 = this.z.redSqr();
  var pz2 = p.z.redSqr();
  if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0)
    return false;

  // y1 * z2^3 == y2 * z1^3
  var z3 = z2.redMul(this.z);
  var pz3 = pz2.redMul(p.z);
  return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0;
};

JPoint.prototype.eqXToP = function eqXToP(x) {
  var zs = this.z.redSqr();
  var rx = x.toRed(this.curve.red).redMul(zs);
  if (this.x.cmp(rx) === 0)
    return true;

  var xc = x.clone();
  var t = this.curve.redN.redMul(zs);
  for (;;) {
    xc.iadd(this.curve.n);
    if (xc.cmp(this.curve.p) >= 0)
      return false;

    rx.redIAdd(t);
    if (this.x.cmp(rx) === 0)
      return true;
  }
};

JPoint.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC JPoint Infinity>';
  return '<EC JPoint x: ' + this.x.toString(16, 2) +
      ' y: ' + this.y.toString(16, 2) +
      ' z: ' + this.z.toString(16, 2) + '>';
};

JPoint.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

},{"../utils":81,"./base":68,"bn.js":17,"inherits":100}],73:[function(require,module,exports){
'use strict';

var curves = exports;

var hash = require('hash.js');
var curve = require('./curve');
var utils = require('./utils');

var assert = utils.assert;

function PresetCurve(options) {
  if (options.type === 'short')
    this.curve = new curve.short(options);
  else if (options.type === 'edwards')
    this.curve = new curve.edwards(options);
  else
    this.curve = new curve.mont(options);
  this.g = this.curve.g;
  this.n = this.curve.n;
  this.hash = options.hash;

  assert(this.g.validate(), 'Invalid curve');
  assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O');
}
curves.PresetCurve = PresetCurve;

function defineCurve(name, options) {
  Object.defineProperty(curves, name, {
    configurable: true,
    enumerable: true,
    get: function() {
      var curve = new PresetCurve(options);
      Object.defineProperty(curves, name, {
        configurable: true,
        enumerable: true,
        value: curve
      });
      return curve;
    }
  });
}

defineCurve('p192', {
  type: 'short',
  prime: 'p192',
  p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc',
  b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1',
  n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831',
  hash: hash.sha256,
  gRed: false,
  g: [
    '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012',
    '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811'
  ]
});

defineCurve('p224', {
  type: 'short',
  prime: 'p224',
  p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe',
  b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4',
  n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d',
  hash: hash.sha256,
  gRed: false,
  g: [
    'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21',
    'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34'
  ]
});

defineCurve('p256', {
  type: 'short',
  prime: null,
  p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff',
  a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc',
  b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b',
  n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551',
  hash: hash.sha256,
  gRed: false,
  g: [
    '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296',
    '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5'
  ]
});

defineCurve('p384', {
  type: 'short',
  prime: null,
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 ffffffff',
  a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 fffffffc',
  b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' +
     '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef',
  n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' +
     'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973',
  hash: hash.sha384,
  gRed: false,
  g: [
    'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' +
    '5502f25d bf55296c 3a545e38 72760ab7',
    '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' +
    '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f'
  ]
});

defineCurve('p521', {
  type: 'short',
  prime: null,
  p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff',
  a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff fffffffc',
  b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' +
     '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' +
     '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00',
  n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' +
     'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409',
  hash: hash.sha512,
  gRed: false,
  g: [
    '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' +
    '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' +
    'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66',
    '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' +
    '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' +
    '3fad0761 353c7086 a272c240 88be9476 9fd16650'
  ]
});

defineCurve('curve25519', {
  type: 'mont',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '76d06',
  b: '1',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '9'
  ]
});

defineCurve('ed25519', {
  type: 'edwards',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '-1',
  c: '1',
  // -121665 * (121666^(-1)) (mod P)
  d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a',

    // 4/5
    '6666666666666666666666666666666666666666666666666666666666666658'
  ]
});

var pre;
try {
  pre = require('./precomputed/secp256k1');
} catch (e) {
  pre = undefined;
}

defineCurve('secp256k1', {
  type: 'short',
  prime: 'k256',
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f',
  a: '0',
  b: '7',
  n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141',
  h: '1',
  hash: hash.sha256,

  // Precomputed endomorphism
  beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee',
  lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72',
  basis: [
    {
      a: '3086d221a7d46bcde86c90e49284eb15',
      b: '-e4437ed6010e88286f547fa90abfe4c3'
    },
    {
      a: '114ca50f7a8e2f3f657c1108d9d44cfd8',
      b: '3086d221a7d46bcde86c90e49284eb15'
    }
  ],

  gRed: false,
  g: [
    '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
    '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
    pre
  ]
});

},{"./curve":70,"./precomputed/secp256k1":80,"./utils":81,"hash.js":86}],74:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var HmacDRBG = require('hmac-drbg');
var utils = require('../utils');
var curves = require('../curves');
var rand = require('brorand');
var assert = utils.assert;

var KeyPair = require('./key');
var Signature = require('./signature');

function EC(options) {
  if (!(this instanceof EC))
    return new EC(options);

  // Shortcut `elliptic.ec(curve-name)`
  if (typeof options === 'string') {
    assert(curves.hasOwnProperty(options), 'Unknown curve ' + options);

    options = curves[options];
  }

  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
  if (options instanceof curves.PresetCurve)
    options = { curve: options };

  this.curve = options.curve.curve;
  this.n = this.curve.n;
  this.nh = this.n.ushrn(1);
  this.g = this.curve.g;

  // Point on curve
  this.g = options.curve.g;
  this.g.precompute(options.curve.n.bitLength() + 1);

  // Hash for function for DRBG
  this.hash = options.hash || options.curve.hash;
}
module.exports = EC;

EC.prototype.keyPair = function keyPair(options) {
  return new KeyPair(this, options);
};

EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {
  return KeyPair.fromPrivate(this, priv, enc);
};

EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {
  return KeyPair.fromPublic(this, pub, enc);
};

EC.prototype.genKeyPair = function genKeyPair(options) {
  if (!options)
    options = {};

  // Instantiate Hmac_DRBG
  var drbg = new HmacDRBG({
    hash: this.hash,
    pers: options.pers,
    persEnc: options.persEnc || 'utf8',
    entropy: options.entropy || rand(this.hash.hmacStrength),
    entropyEnc: options.entropy && options.entropyEnc || 'utf8',
    nonce: this.n.toArray()
  });

  var bytes = this.n.byteLength();
  var ns2 = this.n.sub(new BN(2));
  do {
    var priv = new BN(drbg.generate(bytes));
    if (priv.cmp(ns2) > 0)
      continue;

    priv.iaddn(1);
    return this.keyFromPrivate(priv);
  } while (true);
};

EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
  var delta = msg.byteLength() * 8 - this.n.bitLength();
  if (delta > 0)
    msg = msg.ushrn(delta);
  if (!truncOnly && msg.cmp(this.n) >= 0)
    return msg.sub(this.n);
  else
    return msg;
};

EC.prototype.sign = function sign(msg, key, enc, options) {
  if (typeof enc === 'object') {
    options = enc;
    enc = null;
  }
  if (!options)
    options = {};

  key = this.keyFromPrivate(key, enc);
  msg = this._truncateToN(new BN(msg, 16));

  // Zero-extend key to provide enough entropy
  var bytes = this.n.byteLength();
  var bkey = key.getPrivate().toArray('be', bytes);

  // Zero-extend nonce to have the same byte size as N
  var nonce = msg.toArray('be', bytes);

  // Instantiate Hmac_DRBG
  var drbg = new HmacDRBG({
    hash: this.hash,
    entropy: bkey,
    nonce: nonce,
    pers: options.pers,
    persEnc: options.persEnc || 'utf8'
  });

  // Number of bytes to generate
  var ns1 = this.n.sub(new BN(1));

  for (var iter = 0; true; iter++) {
    var k = options.k ?
        options.k(iter) :
        new BN(drbg.generate(this.n.byteLength()));
    k = this._truncateToN(k, true);
    if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0)
      continue;

    var kp = this.g.mul(k);
    if (kp.isInfinity())
      continue;

    var kpX = kp.getX();
    var r = kpX.umod(this.n);
    if (r.cmpn(0) === 0)
      continue;

    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));
    s = s.umod(this.n);
    if (s.cmpn(0) === 0)
      continue;

    var recoveryParam = (kp.getY().isOdd() ? 1 : 0) |
                        (kpX.cmp(r) !== 0 ? 2 : 0);

    // Use complement of `s`, if it is > `n / 2`
    if (options.canonical && s.cmp(this.nh) > 0) {
      s = this.n.sub(s);
      recoveryParam ^= 1;
    }

    return new Signature({ r: r, s: s, recoveryParam: recoveryParam });
  }
};

EC.prototype.verify = function verify(msg, signature, key, enc) {
  msg = this._truncateToN(new BN(msg, 16));
  key = this.keyFromPublic(key, enc);
  signature = new Signature(signature, 'hex');

  // Perform primitive values validation
  var r = signature.r;
  var s = signature.s;
  if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0)
    return false;
  if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0)
    return false;

  // Validate signature
  var sinv = s.invm(this.n);
  var u1 = sinv.mul(msg).umod(this.n);
  var u2 = sinv.mul(r).umod(this.n);

  if (!this.curve._maxwellTrick) {
    var p = this.g.mulAdd(u1, key.getPublic(), u2);
    if (p.isInfinity())
      return false;

    return p.getX().umod(this.n).cmp(r) === 0;
  }

  // NOTE: Greg Maxwell's trick, inspired by:
  // https://git.io/vad3K

  var p = this.g.jmulAdd(u1, key.getPublic(), u2);
  if (p.isInfinity())
    return false;

  // Compare `p.x` of Jacobian point with `r`,
  // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the
  // inverse of `p.z^2`
  return p.eqXToP(r);
};

EC.prototype.recoverPubKey = function(msg, signature, j, enc) {
  assert((3 & j) === j, 'The recovery param is more than two bits');
  signature = new Signature(signature, enc);

  var n = this.n;
  var e = new BN(msg);
  var r = signature.r;
  var s = signature.s;

  // A set LSB signifies that the y-coordinate is odd
  var isYOdd = j & 1;
  var isSecondKey = j >> 1;
  if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey)
    throw new Error('Unable to find sencond key candinate');

  // 1.1. Let x = r + jn.
  if (isSecondKey)
    r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);
  else
    r = this.curve.pointFromX(r, isYOdd);

  var rInv = signature.r.invm(n);
  var s1 = n.sub(e).mul(rInv).umod(n);
  var s2 = s.mul(rInv).umod(n);

  // 1.6.1 Compute Q = r^-1 (sR -  eG)
  //               Q = r^-1 (sR + -eG)
  return this.g.mulAdd(s1, r, s2);
};

EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) {
  signature = new Signature(signature, enc);
  if (signature.recoveryParam !== null)
    return signature.recoveryParam;

  for (var i = 0; i < 4; i++) {
    var Qprime;
    try {
      Qprime = this.recoverPubKey(e, signature, i);
    } catch (e) {
      continue;
    }

    if (Qprime.eq(Q))
      return i;
  }
  throw new Error('Unable to find valid recovery factor');
};

},{"../curves":73,"../utils":81,"./key":75,"./signature":76,"bn.js":17,"brorand":18,"hmac-drbg":98}],75:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var assert = utils.assert;

function KeyPair(ec, options) {
  this.ec = ec;
  this.priv = null;
  this.pub = null;

  // KeyPair(ec, { priv: ..., pub: ... })
  if (options.priv)
    this._importPrivate(options.priv, options.privEnc);
  if (options.pub)
    this._importPublic(options.pub, options.pubEnc);
}
module.exports = KeyPair;

KeyPair.fromPublic = function fromPublic(ec, pub, enc) {
  if (pub instanceof KeyPair)
    return pub;

  return new KeyPair(ec, {
    pub: pub,
    pubEnc: enc
  });
};

KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {
  if (priv instanceof KeyPair)
    return priv;

  return new KeyPair(ec, {
    priv: priv,
    privEnc: enc
  });
};

KeyPair.prototype.validate = function validate() {
  var pub = this.getPublic();

  if (pub.isInfinity())
    return { result: false, reason: 'Invalid public key' };
  if (!pub.validate())
    return { result: false, reason: 'Public key is not a point' };
  if (!pub.mul(this.ec.curve.n).isInfinity())
    return { result: false, reason: 'Public key * N != O' };

  return { result: true, reason: null };
};

KeyPair.prototype.getPublic = function getPublic(compact, enc) {
  // compact is optional argument
  if (typeof compact === 'string') {
    enc = compact;
    compact = null;
  }

  if (!this.pub)
    this.pub = this.ec.g.mul(this.priv);

  if (!enc)
    return this.pub;

  return this.pub.encode(enc, compact);
};

KeyPair.prototype.getPrivate = function getPrivate(enc) {
  if (enc === 'hex')
    return this.priv.toString(16, 2);
  else
    return this.priv;
};

KeyPair.prototype._importPrivate = function _importPrivate(key, enc) {
  this.priv = new BN(key, enc || 16);

  // Ensure that the priv won't be bigger than n, otherwise we may fail
  // in fixed multiplication method
  this.priv = this.priv.umod(this.ec.curve.n);
};

KeyPair.prototype._importPublic = function _importPublic(key, enc) {
  if (key.x || key.y) {
    // Montgomery points only have an `x` coordinate.
    // Weierstrass/Edwards points on the other hand have both `x` and
    // `y` coordinates.
    if (this.ec.curve.type === 'mont') {
      assert(key.x, 'Need x coordinate');
    } else if (this.ec.curve.type === 'short' ||
               this.ec.curve.type === 'edwards') {
      assert(key.x && key.y, 'Need both x and y coordinate');
    }
    this.pub = this.ec.curve.point(key.x, key.y);
    return;
  }
  this.pub = this.ec.curve.decodePoint(key, enc);
};

// ECDH
KeyPair.prototype.derive = function derive(pub) {
  return pub.mul(this.priv).getX();
};

// ECDSA
KeyPair.prototype.sign = function sign(msg, enc, options) {
  return this.ec.sign(msg, this, enc, options);
};

KeyPair.prototype.verify = function verify(msg, signature) {
  return this.ec.verify(msg, signature, this);
};

KeyPair.prototype.inspect = function inspect() {
  return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) +
         ' pub: ' + (this.pub && this.pub.inspect()) + ' >';
};

},{"../utils":81,"bn.js":17}],76:[function(require,module,exports){
'use strict';

var BN = require('bn.js');

var utils = require('../utils');
var assert = utils.assert;

function Signature(options, enc) {
  if (options instanceof Signature)
    return options;

  if (this._importDER(options, enc))
    return;

  assert(options.r && options.s, 'Signature without r or s');
  this.r = new BN(options.r, 16);
  this.s = new BN(options.s, 16);
  if (options.recoveryParam === undefined)
    this.recoveryParam = null;
  else
    this.recoveryParam = options.recoveryParam;
}
module.exports = Signature;

function Position() {
  this.place = 0;
}

function getLength(buf, p) {
  var initial = buf[p.place++];
  if (!(initial & 0x80)) {
    return initial;
  }
  var octetLen = initial & 0xf;
  var val = 0;
  for (var i = 0, off = p.place; i < octetLen; i++, off++) {
    val <<= 8;
    val |= buf[off];
  }
  p.place = off;
  return val;
}

function rmPadding(buf) {
  var i = 0;
  var len = buf.length - 1;
  while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {
    i++;
  }
  if (i === 0) {
    return buf;
  }
  return buf.slice(i);
}

Signature.prototype._importDER = function _importDER(data, enc) {
  data = utils.toArray(data, enc);
  var p = new Position();
  if (data[p.place++] !== 0x30) {
    return false;
  }
  var len = getLength(data, p);
  if ((len + p.place) !== data.length) {
    return false;
  }
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var rlen = getLength(data, p);
  var r = data.slice(p.place, rlen + p.place);
  p.place += rlen;
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var slen = getLength(data, p);
  if (data.length !== slen + p.place) {
    return false;
  }
  var s = data.slice(p.place, slen + p.place);
  if (r[0] === 0 && (r[1] & 0x80)) {
    r = r.slice(1);
  }
  if (s[0] === 0 && (s[1] & 0x80)) {
    s = s.slice(1);
  }

  this.r = new BN(r);
  this.s = new BN(s);
  this.recoveryParam = null;

  return true;
};

function constructLength(arr, len) {
  if (len < 0x80) {
    arr.push(len);
    return;
  }
  var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);
  arr.push(octets | 0x80);
  while (--octets) {
    arr.push((len >>> (octets << 3)) & 0xff);
  }
  arr.push(len);
}

Signature.prototype.toDER = function toDER(enc) {
  var r = this.r.toArray();
  var s = this.s.toArray();

  // Pad values
  if (r[0] & 0x80)
    r = [ 0 ].concat(r);
  // Pad values
  if (s[0] & 0x80)
    s = [ 0 ].concat(s);

  r = rmPadding(r);
  s = rmPadding(s);

  while (!s[0] && !(s[1] & 0x80)) {
    s = s.slice(1);
  }
  var arr = [ 0x02 ];
  constructLength(arr, r.length);
  arr = arr.concat(r);
  arr.push(0x02);
  constructLength(arr, s.length);
  var backHalf = arr.concat(s);
  var res = [ 0x30 ];
  constructLength(res, backHalf.length);
  res = res.concat(backHalf);
  return utils.encode(res, enc);
};

},{"../utils":81,"bn.js":17}],77:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var curves = require('../curves');
var utils = require('../utils');
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var KeyPair = require('./key');
var Signature = require('./signature');

function EDDSA(curve) {
  assert(curve === 'ed25519', 'only tested with ed25519 so far');

  if (!(this instanceof EDDSA))
    return new EDDSA(curve);

  var curve = curves[curve].curve;
  this.curve = curve;
  this.g = curve.g;
  this.g.precompute(curve.n.bitLength() + 1);

  this.pointClass = curve.point().constructor;
  this.encodingLength = Math.ceil(curve.n.bitLength() / 8);
  this.hash = hash.sha512;
}

module.exports = EDDSA;

/**
* @param {Array|String} message - message bytes
* @param {Array|String|KeyPair} secret - secret bytes or a keypair
* @returns {Signature} - signature
*/
EDDSA.prototype.sign = function sign(message, secret) {
  message = parseBytes(message);
  var key = this.keyFromSecret(secret);
  var r = this.hashInt(key.messagePrefix(), message);
  var R = this.g.mul(r);
  var Rencoded = this.encodePoint(R);
  var s_ = this.hashInt(Rencoded, key.pubBytes(), message)
               .mul(key.priv());
  var S = r.add(s_).umod(this.curve.n);
  return this.makeSignature({ R: R, S: S, Rencoded: Rencoded });
};

/**
* @param {Array} message - message bytes
* @param {Array|String|Signature} sig - sig bytes
* @param {Array|String|Point|KeyPair} pub - public key
* @returns {Boolean} - true if public key matches sig of message
*/
EDDSA.prototype.verify = function verify(message, sig, pub) {
  message = parseBytes(message);
  sig = this.makeSignature(sig);
  var key = this.keyFromPublic(pub);
  var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
  var SG = this.g.mul(sig.S());
  var RplusAh = sig.R().add(key.pub().mul(h));
  return RplusAh.eq(SG);
};

EDDSA.prototype.hashInt = function hashInt() {
  var hash = this.hash();
  for (var i = 0; i < arguments.length; i++)
    hash.update(arguments[i]);
  return utils.intFromLE(hash.digest()).umod(this.curve.n);
};

EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {
  return KeyPair.fromPublic(this, pub);
};

EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {
  return KeyPair.fromSecret(this, secret);
};

EDDSA.prototype.makeSignature = function makeSignature(sig) {
  if (sig instanceof Signature)
    return sig;
  return new Signature(this, sig);
};

/**
* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2
*
* EDDSA defines methods for encoding and decoding points and integers. These are
* helper convenience methods, that pass along to utility functions implied
* parameters.
*
*/
EDDSA.prototype.encodePoint = function encodePoint(point) {
  var enc = point.getY().toArray('le', this.encodingLength);
  enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;
  return enc;
};

EDDSA.prototype.decodePoint = function decodePoint(bytes) {
  bytes = utils.parseBytes(bytes);

  var lastIx = bytes.length - 1;
  var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);
  var xIsOdd = (bytes[lastIx] & 0x80) !== 0;

  var y = utils.intFromLE(normed);
  return this.curve.pointFromY(y, xIsOdd);
};

EDDSA.prototype.encodeInt = function encodeInt(num) {
  return num.toArray('le', this.encodingLength);
};

EDDSA.prototype.decodeInt = function decodeInt(bytes) {
  return utils.intFromLE(bytes);
};

EDDSA.prototype.isPoint = function isPoint(val) {
  return val instanceof this.pointClass;
};

},{"../curves":73,"../utils":81,"./key":78,"./signature":79,"hash.js":86}],78:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var cachedProperty = utils.cachedProperty;

/**
* @param {EDDSA} eddsa - instance
* @param {Object} params - public/private key parameters
*
* @param {Array<Byte>} [params.secret] - secret seed bytes
* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)
* @param {Array<Byte>} [params.pub] - public key point encoded as bytes
*
*/
function KeyPair(eddsa, params) {
  this.eddsa = eddsa;
  this._secret = parseBytes(params.secret);
  if (eddsa.isPoint(params.pub))
    this._pub = params.pub;
  else
    this._pubBytes = parseBytes(params.pub);
}

KeyPair.fromPublic = function fromPublic(eddsa, pub) {
  if (pub instanceof KeyPair)
    return pub;
  return new KeyPair(eddsa, { pub: pub });
};

KeyPair.fromSecret = function fromSecret(eddsa, secret) {
  if (secret instanceof KeyPair)
    return secret;
  return new KeyPair(eddsa, { secret: secret });
};

KeyPair.prototype.secret = function secret() {
  return this._secret;
};

cachedProperty(KeyPair, 'pubBytes', function pubBytes() {
  return this.eddsa.encodePoint(this.pub());
});

cachedProperty(KeyPair, 'pub', function pub() {
  if (this._pubBytes)
    return this.eddsa.decodePoint(this._pubBytes);
  return this.eddsa.g.mul(this.priv());
});

cachedProperty(KeyPair, 'privBytes', function privBytes() {
  var eddsa = this.eddsa;
  var hash = this.hash();
  var lastIx = eddsa.encodingLength - 1;

  var a = hash.slice(0, eddsa.encodingLength);
  a[0] &= 248;
  a[lastIx] &= 127;
  a[lastIx] |= 64;

  return a;
});

cachedProperty(KeyPair, 'priv', function priv() {
  return this.eddsa.decodeInt(this.privBytes());
});

cachedProperty(KeyPair, 'hash', function hash() {
  return this.eddsa.hash().update(this.secret()).digest();
});

cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() {
  return this.hash().slice(this.eddsa.encodingLength);
});

KeyPair.prototype.sign = function sign(message) {
  assert(this._secret, 'KeyPair can only verify');
  return this.eddsa.sign(message, this);
};

KeyPair.prototype.verify = function verify(message, sig) {
  return this.eddsa.verify(message, sig, this);
};

KeyPair.prototype.getSecret = function getSecret(enc) {
  assert(this._secret, 'KeyPair is public only');
  return utils.encode(this.secret(), enc);
};

KeyPair.prototype.getPublic = function getPublic(enc) {
  return utils.encode(this.pubBytes(), enc);
};

module.exports = KeyPair;

},{"../utils":81}],79:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var assert = utils.assert;
var cachedProperty = utils.cachedProperty;
var parseBytes = utils.parseBytes;

/**
* @param {EDDSA} eddsa - eddsa instance
* @param {Array<Bytes>|Object} sig -
* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes
* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes
* @param {Array<Bytes>} [sig.Rencoded] - R point encoded
* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded
*/
function Signature(eddsa, sig) {
  this.eddsa = eddsa;

  if (typeof sig !== 'object')
    sig = parseBytes(sig);

  if (Array.isArray(sig)) {
    sig = {
      R: sig.slice(0, eddsa.encodingLength),
      S: sig.slice(eddsa.encodingLength)
    };
  }

  assert(sig.R && sig.S, 'Signature without R or S');

  if (eddsa.isPoint(sig.R))
    this._R = sig.R;
  if (sig.S instanceof BN)
    this._S = sig.S;

  this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;
  this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;
}

cachedProperty(Signature, 'S', function S() {
  return this.eddsa.decodeInt(this.Sencoded());
});

cachedProperty(Signature, 'R', function R() {
  return this.eddsa.decodePoint(this.Rencoded());
});

cachedProperty(Signature, 'Rencoded', function Rencoded() {
  return this.eddsa.encodePoint(this.R());
});

cachedProperty(Signature, 'Sencoded', function Sencoded() {
  return this.eddsa.encodeInt(this.S());
});

Signature.prototype.toBytes = function toBytes() {
  return this.Rencoded().concat(this.Sencoded());
};

Signature.prototype.toHex = function toHex() {
  return utils.encode(this.toBytes(), 'hex').toUpperCase();
};

module.exports = Signature;

},{"../utils":81,"bn.js":17}],80:[function(require,module,exports){
module.exports = {
  doubles: {
    step: 4,
    points: [
      [
        'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a',
        'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'
      ],
      [
        '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508',
        '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'
      ],
      [
        '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739',
        'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'
      ],
      [
        '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640',
        '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'
      ],
      [
        '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c',
        '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'
      ],
      [
        '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda',
        '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f'
      ],
      [
        'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa',
        '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999'
      ],
      [
        '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0',
        'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09'
      ],
      [
        'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d',
        '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d'
      ],
      [
        'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d',
        'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088'
      ],
      [
        'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1',
        '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d'
      ],
      [
        '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0',
        '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8'
      ],
      [
        '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047',
        '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a'
      ],
      [
        '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862',
        '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453'
      ],
      [
        '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7',
        '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160'
      ],
      [
        '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd',
        '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0'
      ],
      [
        '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83',
        '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6'
      ],
      [
        '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a',
        '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589'
      ],
      [
        '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8',
        'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17'
      ],
      [
        'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d',
        '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda'
      ],
      [
        'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725',
        '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd'
      ],
      [
        '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754',
        '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2'
      ],
      [
        '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c',
        '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6'
      ],
      [
        'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6',
        '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f'
      ],
      [
        '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39',
        'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01'
      ],
      [
        'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891',
        '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3'
      ],
      [
        'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b',
        'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f'
      ],
      [
        'b8da94032a957518eb0f6433571e8761ceffc73693e84edd49150a564f676e03',
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      [
        'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d',
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      [
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      ],
      [
        '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4',
        'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150'
      ],
      [
        '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da',
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        '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51'
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      ]
    ]
  },
  naf: {
    wnd: 7,
    points: [
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      ],
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      ],
      [
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      ],
      [
        '2b4ea0a797a443d293ef5cff444f4979f06acfebd7e86d277475656138385b6c',
        '85e89bc037945d93b343083b5a1c86131a01f60c50269763b570c854e5c09b7a'
      ],
      [
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      ],
      [
        '2fa2104d6b38d11b0230010559879124e42ab8dfeff5ff29dc9cdadd4ecacc3f',
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      ],
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        '438136d603e858a3a5c440c38eccbaddc1d2942114e2eddd4740d098ced1f0d8'
      ],
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        'd3aa2ed71c9dd2247a62df062736eb0baddea9e36122d2be8641abcb005cc4a4'
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        '67163e903236289f776f22c25fb8a3afc1732f2b84b4e95dbda47ae5a0852649'
      ],
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        '603c12daf3d9862ef2b25fe1de289aed24ed291e0ec6708703a5bd567f32ed03'
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        '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8'
      ],
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        '809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721',
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        '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9'
      ]
    ]
  }
};

},{}],81:[function(require,module,exports){
'use strict';

var utils = exports;
var BN = require('bn.js');
var minAssert = require('minimalistic-assert');
var minUtils = require('minimalistic-crypto-utils');

utils.assert = minAssert;
utils.toArray = minUtils.toArray;
utils.zero2 = minUtils.zero2;
utils.toHex = minUtils.toHex;
utils.encode = minUtils.encode;

// Represent num in a w-NAF form
function getNAF(num, w) {
  var naf = [];
  var ws = 1 << (w + 1);
  var k = num.clone();
  while (k.cmpn(1) >= 0) {
    var z;
    if (k.isOdd()) {
      var mod = k.andln(ws - 1);
      if (mod > (ws >> 1) - 1)
        z = (ws >> 1) - mod;
      else
        z = mod;
      k.isubn(z);
    } else {
      z = 0;
    }
    naf.push(z);

    // Optimization, shift by word if possible
    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
    for (var i = 1; i < shift; i++)
      naf.push(0);
    k.iushrn(shift);
  }

  return naf;
}
utils.getNAF = getNAF;

// Represent k1, k2 in a Joint Sparse Form
function getJSF(k1, k2) {
  var jsf = [
    [],
    []
  ];

  k1 = k1.clone();
  k2 = k2.clone();
  var d1 = 0;
  var d2 = 0;
  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {

    // First phase
    var m14 = (k1.andln(3) + d1) & 3;
    var m24 = (k2.andln(3) + d2) & 3;
    if (m14 === 3)
      m14 = -1;
    if (m24 === 3)
      m24 = -1;
    var u1;
    if ((m14 & 1) === 0) {
      u1 = 0;
    } else {
      var m8 = (k1.andln(7) + d1) & 7;
      if ((m8 === 3 || m8 === 5) && m24 === 2)
        u1 = -m14;
      else
        u1 = m14;
    }
    jsf[0].push(u1);

    var u2;
    if ((m24 & 1) === 0) {
      u2 = 0;
    } else {
      var m8 = (k2.andln(7) + d2) & 7;
      if ((m8 === 3 || m8 === 5) && m14 === 2)
        u2 = -m24;
      else
        u2 = m24;
    }
    jsf[1].push(u2);

    // Second phase
    if (2 * d1 === u1 + 1)
      d1 = 1 - d1;
    if (2 * d2 === u2 + 1)
      d2 = 1 - d2;
    k1.iushrn(1);
    k2.iushrn(1);
  }

  return jsf;
}
utils.getJSF = getJSF;

function cachedProperty(obj, name, computer) {
  var key = '_' + name;
  obj.prototype[name] = function cachedProperty() {
    return this[key] !== undefined ? this[key] :
           this[key] = computer.call(this);
  };
}
utils.cachedProperty = cachedProperty;

function parseBytes(bytes) {
  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
                                     bytes;
}
utils.parseBytes = parseBytes;

function intFromLE(bytes) {
  return new BN(bytes, 'hex', 'le');
}
utils.intFromLE = intFromLE;


},{"bn.js":17,"minimalistic-assert":105,"minimalistic-crypto-utils":106}],82:[function(require,module,exports){
module.exports={
  "_from": "elliptic@^6.0.0",
  "_id": "elliptic@6.5.1",
  "_inBundle": false,
  "_integrity": "sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==",
  "_location": "/browserify/elliptic",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "elliptic@^6.0.0",
    "name": "elliptic",
    "escapedName": "elliptic",
    "rawSpec": "^6.0.0",
    "saveSpec": null,
    "fetchSpec": "^6.0.0"
  },
  "_requiredBy": [
    "/browserify/browserify-sign",
    "/browserify/create-ecdh"
  ],
  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.1.tgz",
  "_shasum": "c380f5f909bf1b9b4428d028cd18d3b0efd6b52b",
  "_spec": "elliptic@^6.0.0",
  "_where": "/Users/q/Documents/MacSSD/_roonlabs/.RoonExtensions/lib/node_modules/browserify/node_modules/browserify-sign",
  "author": {
    "name": "Fedor Indutny",
    "email": "fedor@indutny.com"
  },
  "bugs": {
    "url": "https://github.com/indutny/elliptic/issues"
  },
  "bundleDependencies": false,
  "dependencies": {
    "bn.js": "^4.4.0",
    "brorand": "^1.0.1",
    "hash.js": "^1.0.0",
    "hmac-drbg": "^1.0.0",
    "inherits": "^2.0.1",
    "minimalistic-assert": "^1.0.0",
    "minimalistic-crypto-utils": "^1.0.0"
  },
  "deprecated": false,
  "description": "EC cryptography",
  "devDependencies": {
    "brfs": "^1.4.3",
    "coveralls": "^3.0.4",
    "grunt": "^1.0.4",
    "grunt-browserify": "^5.0.0",
    "grunt-cli": "^1.2.0",
    "grunt-contrib-connect": "^1.0.0",
    "grunt-contrib-copy": "^1.0.0",
    "grunt-contrib-uglify": "^1.0.1",
    "grunt-mocha-istanbul": "^3.0.1",
    "grunt-saucelabs": "^9.0.1",
    "istanbul": "^0.4.2",
    "jscs": "^3.0.7",
    "jshint": "^2.6.0",
    "mocha": "^6.1.4"
  },
  "files": [
    "lib"
  ],
  "homepage": "https://github.com/indutny/elliptic",
  "keywords": [
    "EC",
    "Elliptic",
    "curve",
    "Cryptography"
  ],
  "license": "MIT",
  "main": "lib/elliptic.js",
  "name": "elliptic",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/indutny/elliptic.git"
  },
  "scripts": {
    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
    "lint": "npm run jscs && npm run jshint",
    "test": "npm run lint && npm run unit",
    "unit": "istanbul test _mocha --reporter=spec test/index.js",
    "version": "grunt dist && git add dist/"
  },
  "version": "6.5.1"
}

},{}],83:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill

function EventEmitter() {
  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
    this._events = objectCreate(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;

var hasDefineProperty;
try {
  var o = {};
  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
  hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
    enumerable: true,
    get: function() {
      return defaultMaxListeners;
    },
    set: function(arg) {
      // check whether the input is a positive number (whose value is zero or
      // greater and not a NaN).
      if (typeof arg !== 'number' || arg < 0 || arg !== arg)
        throw new TypeError('"defaultMaxListeners" must be a positive number');
      defaultMaxListeners = arg;
    }
  });
} else {
  EventEmitter.defaultMaxListeners = defaultMaxListeners;
}

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || isNaN(n))
    throw new TypeError('"n" argument must be a positive number');
  this._maxListeners = n;
  return this;
};

function $getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return $getMaxListeners(this);
};

// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
  if (isFn)
    handler.call(self);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self);
  }
}
function emitOne(handler, isFn, self, arg1) {
  if (isFn)
    handler.call(self, arg1);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1);
  }
}
function emitTwo(handler, isFn, self, arg1, arg2) {
  if (isFn)
    handler.call(self, arg1, arg2);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2);
  }
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
  if (isFn)
    handler.call(self, arg1, arg2, arg3);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2, arg3);
  }
}

function emitMany(handler, isFn, self, args) {
  if (isFn)
    handler.apply(self, args);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].apply(self, args);
  }
}

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, events;
  var doError = (type === 'error');

  events = this._events;
  if (events)
    doError = (doError && events.error == null);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    if (arguments.length > 1)
      er = arguments[1];
    if (er instanceof Error) {
      throw er; // Unhandled 'error' event
    } else {
      // At least give some kind of context to the user
      var err = new Error('Unhandled "error" event. (' + er + ')');
      err.context = er;
      throw err;
    }
    return false;
  }

  handler = events[type];

  if (!handler)
    return false;

  var isFn = typeof handler === 'function';
  len = arguments.length;
  switch (len) {
      // fast cases
    case 1:
      emitNone(handler, isFn, this);
      break;
    case 2:
      emitOne(handler, isFn, this, arguments[1]);
      break;
    case 3:
      emitTwo(handler, isFn, this, arguments[1], arguments[2]);
      break;
    case 4:
      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
      break;
      // slower
    default:
      args = new Array(len - 1);
      for (i = 1; i < len; i++)
        args[i - 1] = arguments[i];
      emitMany(handler, isFn, this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');

  events = target._events;
  if (!events) {
    events = target._events = objectCreate(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener) {
      target.emit('newListener', type,
          listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (!existing) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
          prepend ? [listener, existing] : [existing, listener];
    } else {
      // If we've already got an array, just append.
      if (prepend) {
        existing.unshift(listener);
      } else {
        existing.push(listener);
      }
    }

    // Check for listener leak
    if (!existing.warned) {
      m = $getMaxListeners(target);
      if (m && m > 0 && existing.length > m) {
        existing.warned = true;
        var w = new Error('Possible EventEmitter memory leak detected. ' +
            existing.length + ' "' + String(type) + '" listeners ' +
            'added. Use emitter.setMaxListeners() to ' +
            'increase limit.');
        w.name = 'MaxListenersExceededWarning';
        w.emitter = target;
        w.type = type;
        w.count = existing.length;
        if (typeof console === 'object' && console.warn) {
          console.warn('%s: %s', w.name, w.message);
        }
      }
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    switch (arguments.length) {
      case 0:
        return this.listener.call(this.target);
      case 1:
        return this.listener.call(this.target, arguments[0]);
      case 2:
        return this.listener.call(this.target, arguments[0], arguments[1]);
      case 3:
        return this.listener.call(this.target, arguments[0], arguments[1],
            arguments[2]);
      default:
        var args = new Array(arguments.length);
        for (var i = 0; i < args.length; ++i)
          args[i] = arguments[i];
        this.listener.apply(this.target, args);
    }
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = bind.call(onceWrapper, state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');

      events = this._events;
      if (!events)
        return this;

      list = events[type];
      if (!list)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = objectCreate(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else
          spliceOne(list, position);

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (!events)
        return this;

      // not listening for removeListener, no need to emit
      if (!events.removeListener) {
        if (arguments.length === 0) {
          this._events = objectCreate(null);
          this._eventsCount = 0;
        } else if (events[type]) {
          if (--this._eventsCount === 0)
            this._events = objectCreate(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = objectKeys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = objectCreate(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (!events)
    return [];

  var evlistener = events[type];
  if (!evlistener)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};

// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
    list[i] = list[k];
  list.pop();
}

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function objectCreatePolyfill(proto) {
  var F = function() {};
  F.prototype = proto;
  return new F;
}
function objectKeysPolyfill(obj) {
  var keys = [];
  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
    keys.push(k);
  }
  return k;
}
function functionBindPolyfill(context) {
  var fn = this;
  return function () {
    return fn.apply(context, arguments);
  };
}

},{}],84:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var MD5 = require('md5.js')

/* eslint-disable camelcase */
function EVP_BytesToKey (password, salt, keyBits, ivLen) {
  if (!Buffer.isBuffer(password)) password = Buffer.from(password, 'binary')
  if (salt) {
    if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, 'binary')
    if (salt.length !== 8) throw new RangeError('salt should be Buffer with 8 byte length')
  }

  var keyLen = keyBits / 8
  var key = Buffer.alloc(keyLen)
  var iv = Buffer.alloc(ivLen || 0)
  var tmp = Buffer.alloc(0)

  while (keyLen > 0 || ivLen > 0) {
    var hash = new MD5()
    hash.update(tmp)
    hash.update(password)
    if (salt) hash.update(salt)
    tmp = hash.digest()

    var used = 0

    if (keyLen > 0) {
      var keyStart = key.length - keyLen
      used = Math.min(keyLen, tmp.length)
      tmp.copy(key, keyStart, 0, used)
      keyLen -= used
    }

    if (used < tmp.length && ivLen > 0) {
      var ivStart = iv.length - ivLen
      var length = Math.min(ivLen, tmp.length - used)
      tmp.copy(iv, ivStart, used, used + length)
      ivLen -= length
    }
  }

  tmp.fill(0)
  return { key: key, iv: iv }
}

module.exports = EVP_BytesToKey

},{"md5.js":103,"safe-buffer":144}],85:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var inherits = require('inherits')

function throwIfNotStringOrBuffer (val, prefix) {
  if (!Buffer.isBuffer(val) && typeof val !== 'string') {
    throw new TypeError(prefix + ' must be a string or a buffer')
  }
}

function HashBase (blockSize) {
  Transform.call(this)

  this._block = Buffer.allocUnsafe(blockSize)
  this._blockSize = blockSize
  this._blockOffset = 0
  this._length = [0, 0, 0, 0]

  this._finalized = false
}

inherits(HashBase, Transform)

HashBase.prototype._transform = function (chunk, encoding, callback) {
  var error = null
  try {
    this.update(chunk, encoding)
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype._flush = function (callback) {
  var error = null
  try {
    this.push(this.digest())
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype.update = function (data, encoding) {
  throwIfNotStringOrBuffer(data, 'Data')
  if (this._finalized) throw new Error('Digest already called')
  if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)

  // consume data
  var block = this._block
  var offset = 0
  while (this._blockOffset + data.length - offset >= this._blockSize) {
    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
    this._update()
    this._blockOffset = 0
  }
  while (offset < data.length) block[this._blockOffset++] = data[offset++]

  // update length
  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
    this._length[j] += carry
    carry = (this._length[j] / 0x0100000000) | 0
    if (carry > 0) this._length[j] -= 0x0100000000 * carry
  }

  return this
}

HashBase.prototype._update = function () {
  throw new Error('_update is not implemented')
}

HashBase.prototype.digest = function (encoding) {
  if (this._finalized) throw new Error('Digest already called')
  this._finalized = true

  var digest = this._digest()
  if (encoding !== undefined) digest = digest.toString(encoding)

  // reset state
  this._block.fill(0)
  this._blockOffset = 0
  for (var i = 0; i < 4; ++i) this._length[i] = 0

  return digest
}

HashBase.prototype._digest = function () {
  throw new Error('_digest is not implemented')
}

module.exports = HashBase

},{"inherits":100,"safe-buffer":144,"stream":153}],86:[function(require,module,exports){
var hash = exports;

hash.utils = require('./hash/utils');
hash.common = require('./hash/common');
hash.sha = require('./hash/sha');
hash.ripemd = require('./hash/ripemd');
hash.hmac = require('./hash/hmac');

// Proxy hash functions to the main object
hash.sha1 = hash.sha.sha1;
hash.sha256 = hash.sha.sha256;
hash.sha224 = hash.sha.sha224;
hash.sha384 = hash.sha.sha384;
hash.sha512 = hash.sha.sha512;
hash.ripemd160 = hash.ripemd.ripemd160;

},{"./hash/common":87,"./hash/hmac":88,"./hash/ripemd":89,"./hash/sha":90,"./hash/utils":97}],87:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var assert = require('minimalistic-assert');

function BlockHash() {
  this.pending = null;
  this.pendingTotal = 0;
  this.blockSize = this.constructor.blockSize;
  this.outSize = this.constructor.outSize;
  this.hmacStrength = this.constructor.hmacStrength;
  this.padLength = this.constructor.padLength / 8;
  this.endian = 'big';

  this._delta8 = this.blockSize / 8;
  this._delta32 = this.blockSize / 32;
}
exports.BlockHash = BlockHash;

BlockHash.prototype.update = function update(msg, enc) {
  // Convert message to array, pad it, and join into 32bit blocks
  msg = utils.toArray(msg, enc);
  if (!this.pending)
    this.pending = msg;
  else
    this.pending = this.pending.concat(msg);
  this.pendingTotal += msg.length;

  // Enough data, try updating
  if (this.pending.length >= this._delta8) {
    msg = this.pending;

    // Process pending data in blocks
    var r = msg.length % this._delta8;
    this.pending = msg.slice(msg.length - r, msg.length);
    if (this.pending.length === 0)
      this.pending = null;

    msg = utils.join32(msg, 0, msg.length - r, this.endian);
    for (var i = 0; i < msg.length; i += this._delta32)
      this._update(msg, i, i + this._delta32);
  }

  return this;
};

BlockHash.prototype.digest = function digest(enc) {
  this.update(this._pad());
  assert(this.pending === null);

  return this._digest(enc);
};

BlockHash.prototype._pad = function pad() {
  var len = this.pendingTotal;
  var bytes = this._delta8;
  var k = bytes - ((len + this.padLength) % bytes);
  var res = new Array(k + this.padLength);
  res[0] = 0x80;
  for (var i = 1; i < k; i++)
    res[i] = 0;

  // Append length
  len <<= 3;
  if (this.endian === 'big') {
    for (var t = 8; t < this.padLength; t++)
      res[i++] = 0;

    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = len & 0xff;
  } else {
    res[i++] = len & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;

    for (t = 8; t < this.padLength; t++)
      res[i++] = 0;
  }

  return res;
};

},{"./utils":97,"minimalistic-assert":105}],88:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var assert = require('minimalistic-assert');

function Hmac(hash, key, enc) {
  if (!(this instanceof Hmac))
    return new Hmac(hash, key, enc);
  this.Hash = hash;
  this.blockSize = hash.blockSize / 8;
  this.outSize = hash.outSize / 8;
  this.inner = null;
  this.outer = null;

  this._init(utils.toArray(key, enc));
}
module.exports = Hmac;

Hmac.prototype._init = function init(key) {
  // Shorten key, if needed
  if (key.length > this.blockSize)
    key = new this.Hash().update(key).digest();
  assert(key.length <= this.blockSize);

  // Add padding to key
  for (var i = key.length; i < this.blockSize; i++)
    key.push(0);

  for (i = 0; i < key.length; i++)
    key[i] ^= 0x36;
  this.inner = new this.Hash().update(key);

  // 0x36 ^ 0x5c = 0x6a
  for (i = 0; i < key.length; i++)
    key[i] ^= 0x6a;
  this.outer = new this.Hash().update(key);
};

Hmac.prototype.update = function update(msg, enc) {
  this.inner.update(msg, enc);
  return this;
};

Hmac.prototype.digest = function digest(enc) {
  this.outer.update(this.inner.digest());
  return this.outer.digest(enc);
};

},{"./utils":97,"minimalistic-assert":105}],89:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var common = require('./common');

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_3 = utils.sum32_3;
var sum32_4 = utils.sum32_4;
var BlockHash = common.BlockHash;

function RIPEMD160() {
  if (!(this instanceof RIPEMD160))
    return new RIPEMD160();

  BlockHash.call(this);

  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
  this.endian = 'little';
}
utils.inherits(RIPEMD160, BlockHash);
exports.ripemd160 = RIPEMD160;

RIPEMD160.blockSize = 512;
RIPEMD160.outSize = 160;
RIPEMD160.hmacStrength = 192;
RIPEMD160.padLength = 64;

RIPEMD160.prototype._update = function update(msg, start) {
  var A = this.h[0];
  var B = this.h[1];
  var C = this.h[2];
  var D = this.h[3];
  var E = this.h[4];
  var Ah = A;
  var Bh = B;
  var Ch = C;
  var Dh = D;
  var Eh = E;
  for (var j = 0; j < 80; j++) {
    var T = sum32(
      rotl32(
        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
        s[j]),
      E);
    A = E;
    E = D;
    D = rotl32(C, 10);
    C = B;
    B = T;
    T = sum32(
      rotl32(
        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
        sh[j]),
      Eh);
    Ah = Eh;
    Eh = Dh;
    Dh = rotl32(Ch, 10);
    Ch = Bh;
    Bh = T;
  }
  T = sum32_3(this.h[1], C, Dh);
  this.h[1] = sum32_3(this.h[2], D, Eh);
  this.h[2] = sum32_3(this.h[3], E, Ah);
  this.h[3] = sum32_3(this.h[4], A, Bh);
  this.h[4] = sum32_3(this.h[0], B, Ch);
  this.h[0] = T;
};

RIPEMD160.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'little');
  else
    return utils.split32(this.h, 'little');
};

function f(j, x, y, z) {
  if (j <= 15)
    return x ^ y ^ z;
  else if (j <= 31)
    return (x & y) | ((~x) & z);
  else if (j <= 47)
    return (x | (~y)) ^ z;
  else if (j <= 63)
    return (x & z) | (y & (~z));
  else
    return x ^ (y | (~z));
}

function K(j) {
  if (j <= 15)
    return 0x00000000;
  else if (j <= 31)
    return 0x5a827999;
  else if (j <= 47)
    return 0x6ed9eba1;
  else if (j <= 63)
    return 0x8f1bbcdc;
  else
    return 0xa953fd4e;
}

function Kh(j) {
  if (j <= 15)
    return 0x50a28be6;
  else if (j <= 31)
    return 0x5c4dd124;
  else if (j <= 47)
    return 0x6d703ef3;
  else if (j <= 63)
    return 0x7a6d76e9;
  else
    return 0x00000000;
}

var r = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
];

var rh = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
];

var s = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
];

var sh = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
];

},{"./common":87,"./utils":97}],90:[function(require,module,exports){
'use strict';

exports.sha1 = require('./sha/1');
exports.sha224 = require('./sha/224');
exports.sha256 = require('./sha/256');
exports.sha384 = require('./sha/384');
exports.sha512 = require('./sha/512');

},{"./sha/1":91,"./sha/224":92,"./sha/256":93,"./sha/384":94,"./sha/512":95}],91:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var shaCommon = require('./common');

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_5 = utils.sum32_5;
var ft_1 = shaCommon.ft_1;
var BlockHash = common.BlockHash;

var sha1_K = [
  0x5A827999, 0x6ED9EBA1,
  0x8F1BBCDC, 0xCA62C1D6
];

function SHA1() {
  if (!(this instanceof SHA1))
    return new SHA1();

  BlockHash.call(this);
  this.h = [
    0x67452301, 0xefcdab89, 0x98badcfe,
    0x10325476, 0xc3d2e1f0 ];
  this.W = new Array(80);
}

utils.inherits(SHA1, BlockHash);
module.exports = SHA1;

SHA1.blockSize = 512;
SHA1.outSize = 160;
SHA1.hmacStrength = 80;
SHA1.padLength = 64;

SHA1.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];

  for(; i < W.length; i++)
    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];

  for (i = 0; i < W.length; i++) {
    var s = ~~(i / 20);
    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
    e = d;
    d = c;
    c = rotl32(b, 30);
    b = a;
    a = t;
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
};

SHA1.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

},{"../common":87,"../utils":97,"./common":96}],92:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var SHA256 = require('./256');

function SHA224() {
  if (!(this instanceof SHA224))
    return new SHA224();

  SHA256.call(this);
  this.h = [
    0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
    0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
}
utils.inherits(SHA224, SHA256);
module.exports = SHA224;

SHA224.blockSize = 512;
SHA224.outSize = 224;
SHA224.hmacStrength = 192;
SHA224.padLength = 64;

SHA224.prototype._digest = function digest(enc) {
  // Just truncate output
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 7), 'big');
  else
    return utils.split32(this.h.slice(0, 7), 'big');
};


},{"../utils":97,"./256":93}],93:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var shaCommon = require('./common');
var assert = require('minimalistic-assert');

var sum32 = utils.sum32;
var sum32_4 = utils.sum32_4;
var sum32_5 = utils.sum32_5;
var ch32 = shaCommon.ch32;
var maj32 = shaCommon.maj32;
var s0_256 = shaCommon.s0_256;
var s1_256 = shaCommon.s1_256;
var g0_256 = shaCommon.g0_256;
var g1_256 = shaCommon.g1_256;

var BlockHash = common.BlockHash;

var sha256_K = [
  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
];

function SHA256() {
  if (!(this instanceof SHA256))
    return new SHA256();

  BlockHash.call(this);
  this.h = [
    0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
    0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
  ];
  this.k = sha256_K;
  this.W = new Array(64);
}
utils.inherits(SHA256, BlockHash);
module.exports = SHA256;

SHA256.blockSize = 512;
SHA256.outSize = 256;
SHA256.hmacStrength = 192;
SHA256.padLength = 64;

SHA256.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i++)
    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];
  var f = this.h[5];
  var g = this.h[6];
  var h = this.h[7];

  assert(this.k.length === W.length);
  for (i = 0; i < W.length; i++) {
    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
    var T2 = sum32(s0_256(a), maj32(a, b, c));
    h = g;
    g = f;
    f = e;
    e = sum32(d, T1);
    d = c;
    c = b;
    b = a;
    a = sum32(T1, T2);
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
  this.h[5] = sum32(this.h[5], f);
  this.h[6] = sum32(this.h[6], g);
  this.h[7] = sum32(this.h[7], h);
};

SHA256.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

},{"../common":87,"../utils":97,"./common":96,"minimalistic-assert":105}],94:[function(require,module,exports){
'use strict';

var utils = require('../utils');

var SHA512 = require('./512');

function SHA384() {
  if (!(this instanceof SHA384))
    return new SHA384();

  SHA512.call(this);
  this.h = [
    0xcbbb9d5d, 0xc1059ed8,
    0x629a292a, 0x367cd507,
    0x9159015a, 0x3070dd17,
    0x152fecd8, 0xf70e5939,
    0x67332667, 0xffc00b31,
    0x8eb44a87, 0x68581511,
    0xdb0c2e0d, 0x64f98fa7,
    0x47b5481d, 0xbefa4fa4 ];
}
utils.inherits(SHA384, SHA512);
module.exports = SHA384;

SHA384.blockSize = 1024;
SHA384.outSize = 384;
SHA384.hmacStrength = 192;
SHA384.padLength = 128;

SHA384.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 12), 'big');
  else
    return utils.split32(this.h.slice(0, 12), 'big');
};

},{"../utils":97,"./512":95}],95:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var assert = require('minimalistic-assert');

var rotr64_hi = utils.rotr64_hi;
var rotr64_lo = utils.rotr64_lo;
var shr64_hi = utils.shr64_hi;
var shr64_lo = utils.shr64_lo;
var sum64 = utils.sum64;
var sum64_hi = utils.sum64_hi;
var sum64_lo = utils.sum64_lo;
var sum64_4_hi = utils.sum64_4_hi;
var sum64_4_lo = utils.sum64_4_lo;
var sum64_5_hi = utils.sum64_5_hi;
var sum64_5_lo = utils.sum64_5_lo;

var BlockHash = common.BlockHash;

var sha512_K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
];

function SHA512() {
  if (!(this instanceof SHA512))
    return new SHA512();

  BlockHash.call(this);
  this.h = [
    0x6a09e667, 0xf3bcc908,
    0xbb67ae85, 0x84caa73b,
    0x3c6ef372, 0xfe94f82b,
    0xa54ff53a, 0x5f1d36f1,
    0x510e527f, 0xade682d1,
    0x9b05688c, 0x2b3e6c1f,
    0x1f83d9ab, 0xfb41bd6b,
    0x5be0cd19, 0x137e2179 ];
  this.k = sha512_K;
  this.W = new Array(160);
}
utils.inherits(SHA512, BlockHash);
module.exports = SHA512;

SHA512.blockSize = 1024;
SHA512.outSize = 512;
SHA512.hmacStrength = 192;
SHA512.padLength = 128;

SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
  var W = this.W;

  // 32 x 32bit words
  for (var i = 0; i < 32; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i += 2) {
    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
    var c1_hi = W[i - 14];  // i - 7
    var c1_lo = W[i - 13];
    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
    var c3_hi = W[i - 32];  // i - 16
    var c3_lo = W[i - 31];

    W[i] = sum64_4_hi(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo);
    W[i + 1] = sum64_4_lo(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo);
  }
};

SHA512.prototype._update = function _update(msg, start) {
  this._prepareBlock(msg, start);

  var W = this.W;

  var ah = this.h[0];
  var al = this.h[1];
  var bh = this.h[2];
  var bl = this.h[3];
  var ch = this.h[4];
  var cl = this.h[5];
  var dh = this.h[6];
  var dl = this.h[7];
  var eh = this.h[8];
  var el = this.h[9];
  var fh = this.h[10];
  var fl = this.h[11];
  var gh = this.h[12];
  var gl = this.h[13];
  var hh = this.h[14];
  var hl = this.h[15];

  assert(this.k.length === W.length);
  for (var i = 0; i < W.length; i += 2) {
    var c0_hi = hh;
    var c0_lo = hl;
    var c1_hi = s1_512_hi(eh, el);
    var c1_lo = s1_512_lo(eh, el);
    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
    var c3_hi = this.k[i];
    var c3_lo = this.k[i + 1];
    var c4_hi = W[i];
    var c4_lo = W[i + 1];

    var T1_hi = sum64_5_hi(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo,
      c4_hi, c4_lo);
    var T1_lo = sum64_5_lo(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo,
      c4_hi, c4_lo);

    c0_hi = s0_512_hi(ah, al);
    c0_lo = s0_512_lo(ah, al);
    c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
    c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);

    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);

    hh = gh;
    hl = gl;

    gh = fh;
    gl = fl;

    fh = eh;
    fl = el;

    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
    el = sum64_lo(dl, dl, T1_hi, T1_lo);

    dh = ch;
    dl = cl;

    ch = bh;
    cl = bl;

    bh = ah;
    bl = al;

    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
  }

  sum64(this.h, 0, ah, al);
  sum64(this.h, 2, bh, bl);
  sum64(this.h, 4, ch, cl);
  sum64(this.h, 6, dh, dl);
  sum64(this.h, 8, eh, el);
  sum64(this.h, 10, fh, fl);
  sum64(this.h, 12, gh, gl);
  sum64(this.h, 14, hh, hl);
};

SHA512.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

function ch64_hi(xh, xl, yh, yl, zh) {
  var r = (xh & yh) ^ ((~xh) & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function ch64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ ((~xl) & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_hi(xh, xl, yh, yl, zh) {
  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 28);
  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
  var c2_hi = rotr64_hi(xl, xh, 7);  // 39

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 28);
  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
  var c2_lo = rotr64_lo(xl, xh, 7);  // 39

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 14);
  var c1_hi = rotr64_hi(xh, xl, 18);
  var c2_hi = rotr64_hi(xl, xh, 9);  // 41

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 14);
  var c1_lo = rotr64_lo(xh, xl, 18);
  var c2_lo = rotr64_lo(xl, xh, 9);  // 41

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 1);
  var c1_hi = rotr64_hi(xh, xl, 8);
  var c2_hi = shr64_hi(xh, xl, 7);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 1);
  var c1_lo = rotr64_lo(xh, xl, 8);
  var c2_lo = shr64_lo(xh, xl, 7);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 19);
  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
  var c2_hi = shr64_hi(xh, xl, 6);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 19);
  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
  var c2_lo = shr64_lo(xh, xl, 6);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

},{"../common":87,"../utils":97,"minimalistic-assert":105}],96:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var rotr32 = utils.rotr32;

function ft_1(s, x, y, z) {
  if (s === 0)
    return ch32(x, y, z);
  if (s === 1 || s === 3)
    return p32(x, y, z);
  if (s === 2)
    return maj32(x, y, z);
}
exports.ft_1 = ft_1;

function ch32(x, y, z) {
  return (x & y) ^ ((~x) & z);
}
exports.ch32 = ch32;

function maj32(x, y, z) {
  return (x & y) ^ (x & z) ^ (y & z);
}
exports.maj32 = maj32;

function p32(x, y, z) {
  return x ^ y ^ z;
}
exports.p32 = p32;

function s0_256(x) {
  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
}
exports.s0_256 = s0_256;

function s1_256(x) {
  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
}
exports.s1_256 = s1_256;

function g0_256(x) {
  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
}
exports.g0_256 = g0_256;

function g1_256(x) {
  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
}
exports.g1_256 = g1_256;

},{"../utils":97}],97:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

exports.inherits = inherits;

function isSurrogatePair(msg, i) {
  if ((msg.charCodeAt(i) & 0xFC00) !== 0xD800) {
    return false;
  }
  if (i < 0 || i + 1 >= msg.length) {
    return false;
  }
  return (msg.charCodeAt(i + 1) & 0xFC00) === 0xDC00;
}

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg === 'string') {
    if (!enc) {
      // Inspired by stringToUtf8ByteArray() in closure-library by Google
      // https://github.com/google/closure-library/blob/8598d87242af59aac233270742c8984e2b2bdbe0/closure/goog/crypt/crypt.js#L117-L143
      // Apache License 2.0
      // https://github.com/google/closure-library/blob/master/LICENSE
      var p = 0;
      for (var i = 0; i < msg.length; i++) {
        var c = msg.charCodeAt(i);
        if (c < 128) {
          res[p++] = c;
        } else if (c < 2048) {
          res[p++] = (c >> 6) | 192;
          res[p++] = (c & 63) | 128;
        } else if (isSurrogatePair(msg, i)) {
          c = 0x10000 + ((c & 0x03FF) << 10) + (msg.charCodeAt(++i) & 0x03FF);
          res[p++] = (c >> 18) | 240;
          res[p++] = ((c >> 12) & 63) | 128;
          res[p++] = ((c >> 6) & 63) | 128;
          res[p++] = (c & 63) | 128;
        } else {
          res[p++] = (c >> 12) | 224;
          res[p++] = ((c >> 6) & 63) | 128;
          res[p++] = (c & 63) | 128;
        }
      }
    } else if (enc === 'hex') {
      msg = msg.replace(/[^a-z0-9]+/ig, '');
      if (msg.length % 2 !== 0)
        msg = '0' + msg;
      for (i = 0; i < msg.length; i += 2)
        res.push(parseInt(msg[i] + msg[i + 1], 16));
    }
  } else {
    for (i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
  }
  return res;
}
exports.toArray = toArray;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
exports.toHex = toHex;

function htonl(w) {
  var res = (w >>> 24) |
            ((w >>> 8) & 0xff00) |
            ((w << 8) & 0xff0000) |
            ((w & 0xff) << 24);
  return res >>> 0;
}
exports.htonl = htonl;

function toHex32(msg, endian) {
  var res = '';
  for (var i = 0; i < msg.length; i++) {
    var w = msg[i];
    if (endian === 'little')
      w = htonl(w);
    res += zero8(w.toString(16));
  }
  return res;
}
exports.toHex32 = toHex32;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
exports.zero2 = zero2;

function zero8(word) {
  if (word.length === 7)
    return '0' + word;
  else if (word.length === 6)
    return '00' + word;
  else if (word.length === 5)
    return '000' + word;
  else if (word.length === 4)
    return '0000' + word;
  else if (word.length === 3)
    return '00000' + word;
  else if (word.length === 2)
    return '000000' + word;
  else if (word.length === 1)
    return '0000000' + word;
  else
    return word;
}
exports.zero8 = zero8;

function join32(msg, start, end, endian) {
  var len = end - start;
  assert(len % 4 === 0);
  var res = new Array(len / 4);
  for (var i = 0, k = start; i < res.length; i++, k += 4) {
    var w;
    if (endian === 'big')
      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
    else
      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
    res[i] = w >>> 0;
  }
  return res;
}
exports.join32 = join32;

function split32(msg, endian) {
  var res = new Array(msg.length * 4);
  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
    var m = msg[i];
    if (endian === 'big') {
      res[k] = m >>> 24;
      res[k + 1] = (m >>> 16) & 0xff;
      res[k + 2] = (m >>> 8) & 0xff;
      res[k + 3] = m & 0xff;
    } else {
      res[k + 3] = m >>> 24;
      res[k + 2] = (m >>> 16) & 0xff;
      res[k + 1] = (m >>> 8) & 0xff;
      res[k] = m & 0xff;
    }
  }
  return res;
}
exports.split32 = split32;

function rotr32(w, b) {
  return (w >>> b) | (w << (32 - b));
}
exports.rotr32 = rotr32;

function rotl32(w, b) {
  return (w << b) | (w >>> (32 - b));
}
exports.rotl32 = rotl32;

function sum32(a, b) {
  return (a + b) >>> 0;
}
exports.sum32 = sum32;

function sum32_3(a, b, c) {
  return (a + b + c) >>> 0;
}
exports.sum32_3 = sum32_3;

function sum32_4(a, b, c, d) {
  return (a + b + c + d) >>> 0;
}
exports.sum32_4 = sum32_4;

function sum32_5(a, b, c, d, e) {
  return (a + b + c + d + e) >>> 0;
}
exports.sum32_5 = sum32_5;

function sum64(buf, pos, ah, al) {
  var bh = buf[pos];
  var bl = buf[pos + 1];

  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  buf[pos] = hi >>> 0;
  buf[pos + 1] = lo;
}
exports.sum64 = sum64;

function sum64_hi(ah, al, bh, bl) {
  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  return hi >>> 0;
}
exports.sum64_hi = sum64_hi;

function sum64_lo(ah, al, bh, bl) {
  var lo = al + bl;
  return lo >>> 0;
}
exports.sum64_lo = sum64_lo;

function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;

  var hi = ah + bh + ch + dh + carry;
  return hi >>> 0;
}
exports.sum64_4_hi = sum64_4_hi;

function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
  var lo = al + bl + cl + dl;
  return lo >>> 0;
}
exports.sum64_4_lo = sum64_4_lo;

function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;
  lo = (lo + el) >>> 0;
  carry += lo < el ? 1 : 0;

  var hi = ah + bh + ch + dh + eh + carry;
  return hi >>> 0;
}
exports.sum64_5_hi = sum64_5_hi;

function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var lo = al + bl + cl + dl + el;

  return lo >>> 0;
}
exports.sum64_5_lo = sum64_5_lo;

function rotr64_hi(ah, al, num) {
  var r = (al << (32 - num)) | (ah >>> num);
  return r >>> 0;
}
exports.rotr64_hi = rotr64_hi;

function rotr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
}
exports.rotr64_lo = rotr64_lo;

function shr64_hi(ah, al, num) {
  return ah >>> num;
}
exports.shr64_hi = shr64_hi;

function shr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
}
exports.shr64_lo = shr64_lo;

},{"inherits":100,"minimalistic-assert":105}],98:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var utils = require('minimalistic-crypto-utils');
var assert = require('minimalistic-assert');

function HmacDRBG(options) {
  if (!(this instanceof HmacDRBG))
    return new HmacDRBG(options);
  this.hash = options.hash;
  this.predResist = !!options.predResist;

  this.outLen = this.hash.outSize;
  this.minEntropy = options.minEntropy || this.hash.hmacStrength;

  this._reseed = null;
  this.reseedInterval = null;
  this.K = null;
  this.V = null;

  var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex');
  var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex');
  var pers = utils.toArray(options.pers, options.persEnc || 'hex');
  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
  this._init(entropy, nonce, pers);
}
module.exports = HmacDRBG;

HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
  var seed = entropy.concat(nonce).concat(pers);

  this.K = new Array(this.outLen / 8);
  this.V = new Array(this.outLen / 8);
  for (var i = 0; i < this.V.length; i++) {
    this.K[i] = 0x00;
    this.V[i] = 0x01;
  }

  this._update(seed);
  this._reseed = 1;
  this.reseedInterval = 0x1000000000000;  // 2^48
};

HmacDRBG.prototype._hmac = function hmac() {
  return new hash.hmac(this.hash, this.K);
};

HmacDRBG.prototype._update = function update(seed) {
  var kmac = this._hmac()
                 .update(this.V)
                 .update([ 0x00 ]);
  if (seed)
    kmac = kmac.update(seed);
  this.K = kmac.digest();
  this.V = this._hmac().update(this.V).digest();
  if (!seed)
    return;

  this.K = this._hmac()
               .update(this.V)
               .update([ 0x01 ])
               .update(seed)
               .digest();
  this.V = this._hmac().update(this.V).digest();
};

HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
  // Optional entropy enc
  if (typeof entropyEnc !== 'string') {
    addEnc = add;
    add = entropyEnc;
    entropyEnc = null;
  }

  entropy = utils.toArray(entropy, entropyEnc);
  add = utils.toArray(add, addEnc);

  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');

  this._update(entropy.concat(add || []));
  this._reseed = 1;
};

HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
  if (this._reseed > this.reseedInterval)
    throw new Error('Reseed is required');

  // Optional encoding
  if (typeof enc !== 'string') {
    addEnc = add;
    add = enc;
    enc = null;
  }

  // Optional additional data
  if (add) {
    add = utils.toArray(add, addEnc || 'hex');
    this._update(add);
  }

  var temp = [];
  while (temp.length < len) {
    this.V = this._hmac().update(this.V).digest();
    temp = temp.concat(this.V);
  }

  var res = temp.slice(0, len);
  this._update(add);
  this._reseed++;
  return utils.encode(res, enc);
};

},{"hash.js":86,"minimalistic-assert":105,"minimalistic-crypto-utils":106}],99:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],100:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      })
    }
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
}

},{}],101:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],102:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],103:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var HashBase = require('hash-base')
var Buffer = require('safe-buffer').Buffer

var ARRAY16 = new Array(16)

function MD5 () {
  HashBase.call(this, 64)

  // state
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
}

inherits(MD5, HashBase)

MD5.prototype._update = function () {
  var M = ARRAY16
  for (var i = 0; i < 16; ++i) M[i] = this._block.readInt32LE(i * 4)

  var a = this._a
  var b = this._b
  var c = this._c
  var d = this._d

  a = fnF(a, b, c, d, M[0], 0xd76aa478, 7)
  d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12)
  c = fnF(c, d, a, b, M[2], 0x242070db, 17)
  b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22)
  a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7)
  d = fnF(d, a, b, c, M[5], 0x4787c62a, 12)
  c = fnF(c, d, a, b, M[6], 0xa8304613, 17)
  b = fnF(b, c, d, a, M[7], 0xfd469501, 22)
  a = fnF(a, b, c, d, M[8], 0x698098d8, 7)
  d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12)
  c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17)
  b = fnF(b, c, d, a, M[11], 0x895cd7be, 22)
  a = fnF(a, b, c, d, M[12], 0x6b901122, 7)
  d = fnF(d, a, b, c, M[13], 0xfd987193, 12)
  c = fnF(c, d, a, b, M[14], 0xa679438e, 17)
  b = fnF(b, c, d, a, M[15], 0x49b40821, 22)

  a = fnG(a, b, c, d, M[1], 0xf61e2562, 5)
  d = fnG(d, a, b, c, M[6], 0xc040b340, 9)
  c = fnG(c, d, a, b, M[11], 0x265e5a51, 14)
  b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20)
  a = fnG(a, b, c, d, M[5], 0xd62f105d, 5)
  d = fnG(d, a, b, c, M[10], 0x02441453, 9)
  c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14)
  b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20)
  a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5)
  d = fnG(d, a, b, c, M[14], 0xc33707d6, 9)
  c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14)
  b = fnG(b, c, d, a, M[8], 0x455a14ed, 20)
  a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5)
  d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9)
  c = fnG(c, d, a, b, M[7], 0x676f02d9, 14)
  b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20)

  a = fnH(a, b, c, d, M[5], 0xfffa3942, 4)
  d = fnH(d, a, b, c, M[8], 0x8771f681, 11)
  c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16)
  b = fnH(b, c, d, a, M[14], 0xfde5380c, 23)
  a = fnH(a, b, c, d, M[1], 0xa4beea44, 4)
  d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11)
  c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16)
  b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23)
  a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4)
  d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11)
  c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16)
  b = fnH(b, c, d, a, M[6], 0x04881d05, 23)
  a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4)
  d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11)
  c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16)
  b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23)

  a = fnI(a, b, c, d, M[0], 0xf4292244, 6)
  d = fnI(d, a, b, c, M[7], 0x432aff97, 10)
  c = fnI(c, d, a, b, M[14], 0xab9423a7, 15)
  b = fnI(b, c, d, a, M[5], 0xfc93a039, 21)
  a = fnI(a, b, c, d, M[12], 0x655b59c3, 6)
  d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10)
  c = fnI(c, d, a, b, M[10], 0xffeff47d, 15)
  b = fnI(b, c, d, a, M[1], 0x85845dd1, 21)
  a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6)
  d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10)
  c = fnI(c, d, a, b, M[6], 0xa3014314, 15)
  b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21)
  a = fnI(a, b, c, d, M[4], 0xf7537e82, 6)
  d = fnI(d, a, b, c, M[11], 0xbd3af235, 10)
  c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15)
  b = fnI(b, c, d, a, M[9], 0xeb86d391, 21)

  this._a = (this._a + a) | 0
  this._b = (this._b + b) | 0
  this._c = (this._c + c) | 0
  this._d = (this._d + d) | 0
}

MD5.prototype._digest = function () {
  // create padding and handle blocks
  this._block[this._blockOffset++] = 0x80
  if (this._blockOffset > 56) {
    this._block.fill(0, this._blockOffset, 64)
    this._update()
    this._blockOffset = 0
  }

  this._block.fill(0, this._blockOffset, 56)
  this._block.writeUInt32LE(this._length[0], 56)
  this._block.writeUInt32LE(this._length[1], 60)
  this._update()

  // produce result
  var buffer = Buffer.allocUnsafe(16)
  buffer.writeInt32LE(this._a, 0)
  buffer.writeInt32LE(this._b, 4)
  buffer.writeInt32LE(this._c, 8)
  buffer.writeInt32LE(this._d, 12)
  return buffer
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function fnF (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + b) | 0
}

function fnG (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + b) | 0
}

function fnH (a, b, c, d, m, k, s) {
  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0
}

function fnI (a, b, c, d, m, k, s) {
  return (rotl((a + ((c ^ (b | (~d)))) + m + k) | 0, s) + b) | 0
}

module.exports = MD5

},{"hash-base":85,"inherits":100,"safe-buffer":144}],104:[function(require,module,exports){
var bn = require('bn.js');
var brorand = require('brorand');

function MillerRabin(rand) {
  this.rand = rand || new brorand.Rand();
}
module.exports = MillerRabin;

MillerRabin.create = function create(rand) {
  return new MillerRabin(rand);
};

MillerRabin.prototype._randbelow = function _randbelow(n) {
  var len = n.bitLength();
  var min_bytes = Math.ceil(len / 8);

  // Generage random bytes until a number less than n is found.
  // This ensures that 0..n-1 have an equal probability of being selected.
  do
    var a = new bn(this.rand.generate(min_bytes));
  while (a.cmp(n) >= 0);

  return a;
};

MillerRabin.prototype._randrange = function _randrange(start, stop) {
  // Generate a random number greater than or equal to start and less than stop.
  var size = stop.sub(start);
  return start.add(this._randbelow(size));
};

MillerRabin.prototype.test = function test(n, k, cb) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  var prime = true;
  for (; k > 0; k--) {
    var a = this._randrange(new bn(2), n1);
    if (cb)
      cb(a);

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return false;
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s)
      return false;
  }

  return prime;
};

MillerRabin.prototype.getDivisor = function getDivisor(n, k) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  for (; k > 0; k--) {
    var a = this._randrange(new bn(2), n1);

    var g = n.gcd(a);
    if (g.cmpn(1) !== 0)
      return g;

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return x.fromRed().subn(1).gcd(n);
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s) {
      x = x.redSqr();
      return x.fromRed().subn(1).gcd(n);
    }
  }

  return false;
};

},{"bn.js":17,"brorand":18}],105:[function(require,module,exports){
module.exports = assert;

function assert(val, msg) {
  if (!val)
    throw new Error(msg || 'Assertion failed');
}

assert.equal = function assertEqual(l, r, msg) {
  if (l != r)
    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
};

},{}],106:[function(require,module,exports){
'use strict';

var utils = exports;

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg !== 'string') {
    for (var i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
    return res;
  }
  if (enc === 'hex') {
    msg = msg.replace(/[^a-z0-9]+/ig, '');
    if (msg.length % 2 !== 0)
      msg = '0' + msg;
    for (var i = 0; i < msg.length; i += 2)
      res.push(parseInt(msg[i] + msg[i + 1], 16));
  } else {
    for (var i = 0; i < msg.length; i++) {
      var c = msg.charCodeAt(i);
      var hi = c >> 8;
      var lo = c & 0xff;
      if (hi)
        res.push(hi, lo);
      else
        res.push(lo);
    }
  }
  return res;
}
utils.toArray = toArray;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.zero2 = zero2;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
utils.toHex = toHex;

utils.encode = function encode(arr, enc) {
  if (enc === 'hex')
    return toHex(arr);
  else
    return arr;
};

},{}],107:[function(require,module,exports){
exports.endianness = function () { return 'LE' };

exports.hostname = function () {
    if (typeof location !== 'undefined') {
        return location.hostname
    }
    else return '';
};

exports.loadavg = function () { return [] };

exports.uptime = function () { return 0 };

exports.freemem = function () {
    return Number.MAX_VALUE;
};

exports.totalmem = function () {
    return Number.MAX_VALUE;
};

exports.cpus = function () { return [] };

exports.type = function () { return 'Browser' };

exports.release = function () {
    if (typeof navigator !== 'undefined') {
        return navigator.appVersion;
    }
    return '';
};

exports.networkInterfaces
= exports.getNetworkInterfaces
= function () { return {} };

exports.arch = function () { return 'javascript' };

exports.platform = function () { return 'browser' };

exports.tmpdir = exports.tmpDir = function () {
    return '/tmp';
};

exports.EOL = '\n';

exports.homedir = function () {
	return '/'
};

},{}],108:[function(require,module,exports){
module.exports={"2.16.840.1.101.3.4.1.1": "aes-128-ecb",
"2.16.840.1.101.3.4.1.2": "aes-128-cbc",
"2.16.840.1.101.3.4.1.3": "aes-128-ofb",
"2.16.840.1.101.3.4.1.4": "aes-128-cfb",
"2.16.840.1.101.3.4.1.21": "aes-192-ecb",
"2.16.840.1.101.3.4.1.22": "aes-192-cbc",
"2.16.840.1.101.3.4.1.23": "aes-192-ofb",
"2.16.840.1.101.3.4.1.24": "aes-192-cfb",
"2.16.840.1.101.3.4.1.41": "aes-256-ecb",
"2.16.840.1.101.3.4.1.42": "aes-256-cbc",
"2.16.840.1.101.3.4.1.43": "aes-256-ofb",
"2.16.840.1.101.3.4.1.44": "aes-256-cfb"
}
},{}],109:[function(require,module,exports){
// from https://github.com/indutny/self-signed/blob/gh-pages/lib/asn1.js
// Fedor, you are amazing.
'use strict'

var asn1 = require('asn1.js')

exports.certificate = require('./certificate')

var RSAPrivateKey = asn1.define('RSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('modulus').int(),
    this.key('publicExponent').int(),
    this.key('privateExponent').int(),
    this.key('prime1').int(),
    this.key('prime2').int(),
    this.key('exponent1').int(),
    this.key('exponent2').int(),
    this.key('coefficient').int()
  )
})
exports.RSAPrivateKey = RSAPrivateKey

var RSAPublicKey = asn1.define('RSAPublicKey', function () {
  this.seq().obj(
    this.key('modulus').int(),
    this.key('publicExponent').int()
  )
})
exports.RSAPublicKey = RSAPublicKey

var PublicKey = asn1.define('SubjectPublicKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  )
})
exports.PublicKey = PublicKey

var AlgorithmIdentifier = asn1.define('AlgorithmIdentifier', function () {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('none').null_().optional(),
    this.key('curve').objid().optional(),
    this.key('params').seq().obj(
      this.key('p').int(),
      this.key('q').int(),
      this.key('g').int()
    ).optional()
  )
})

var PrivateKeyInfo = asn1.define('PrivateKeyInfo', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPrivateKey').octstr()
  )
})
exports.PrivateKey = PrivateKeyInfo
var EncryptedPrivateKeyInfo = asn1.define('EncryptedPrivateKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').seq().obj(
      this.key('id').objid(),
      this.key('decrypt').seq().obj(
        this.key('kde').seq().obj(
          this.key('id').objid(),
          this.key('kdeparams').seq().obj(
            this.key('salt').octstr(),
            this.key('iters').int()
          )
        ),
        this.key('cipher').seq().obj(
          this.key('algo').objid(),
          this.key('iv').octstr()
        )
      )
    ),
    this.key('subjectPrivateKey').octstr()
  )
})

exports.EncryptedPrivateKey = EncryptedPrivateKeyInfo

var DSAPrivateKey = asn1.define('DSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('p').int(),
    this.key('q').int(),
    this.key('g').int(),
    this.key('pub_key').int(),
    this.key('priv_key').int()
  )
})
exports.DSAPrivateKey = DSAPrivateKey

exports.DSAparam = asn1.define('DSAparam', function () {
  this.int()
})

var ECPrivateKey = asn1.define('ECPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('privateKey').octstr(),
    this.key('parameters').optional().explicit(0).use(ECParameters),
    this.key('publicKey').optional().explicit(1).bitstr()
  )
})
exports.ECPrivateKey = ECPrivateKey

var ECParameters = asn1.define('ECParameters', function () {
  this.choice({
    namedCurve: this.objid()
  })
})

exports.signature = asn1.define('signature', function () {
  this.seq().obj(
    this.key('r').int(),
    this.key('s').int()
  )
})

},{"./certificate":110,"asn1.js":2}],110:[function(require,module,exports){
// from https://github.com/Rantanen/node-dtls/blob/25a7dc861bda38cfeac93a723500eea4f0ac2e86/Certificate.js
// thanks to @Rantanen

'use strict'

var asn = require('asn1.js')

var Time = asn.define('Time', function () {
  this.choice({
    utcTime: this.utctime(),
    generalTime: this.gentime()
  })
})

var AttributeTypeValue = asn.define('AttributeTypeValue', function () {
  this.seq().obj(
    this.key('type').objid(),
    this.key('value').any()
  )
})

var AlgorithmIdentifier = asn.define('AlgorithmIdentifier', function () {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('parameters').optional(),
    this.key('curve').objid().optional()
  )
})

var SubjectPublicKeyInfo = asn.define('SubjectPublicKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  )
})

var RelativeDistinguishedName = asn.define('RelativeDistinguishedName', function () {
  this.setof(AttributeTypeValue)
})

var RDNSequence = asn.define('RDNSequence', function () {
  this.seqof(RelativeDistinguishedName)
})

var Name = asn.define('Name', function () {
  this.choice({
    rdnSequence: this.use(RDNSequence)
  })
})

var Validity = asn.define('Validity', function () {
  this.seq().obj(
    this.key('notBefore').use(Time),
    this.key('notAfter').use(Time)
  )
})

var Extension = asn.define('Extension', function () {
  this.seq().obj(
    this.key('extnID').objid(),
    this.key('critical').bool().def(false),
    this.key('extnValue').octstr()
  )
})

var TBSCertificate = asn.define('TBSCertificate', function () {
  this.seq().obj(
    this.key('version').explicit(0).int().optional(),
    this.key('serialNumber').int(),
    this.key('signature').use(AlgorithmIdentifier),
    this.key('issuer').use(Name),
    this.key('validity').use(Validity),
    this.key('subject').use(Name),
    this.key('subjectPublicKeyInfo').use(SubjectPublicKeyInfo),
    this.key('issuerUniqueID').implicit(1).bitstr().optional(),
    this.key('subjectUniqueID').implicit(2).bitstr().optional(),
    this.key('extensions').explicit(3).seqof(Extension).optional()
  )
})

var X509Certificate = asn.define('X509Certificate', function () {
  this.seq().obj(
    this.key('tbsCertificate').use(TBSCertificate),
    this.key('signatureAlgorithm').use(AlgorithmIdentifier),
    this.key('signatureValue').bitstr()
  )
})

module.exports = X509Certificate

},{"asn1.js":2}],111:[function(require,module,exports){
// adapted from https://github.com/apatil/pemstrip
var findProc = /Proc-Type: 4,ENCRYPTED[\n\r]+DEK-Info: AES-((?:128)|(?:192)|(?:256))-CBC,([0-9A-H]+)[\n\r]+([0-9A-z\n\r\+\/\=]+)[\n\r]+/m
var startRegex = /^-----BEGIN ((?:.*? KEY)|CERTIFICATE)-----/m
var fullRegex = /^-----BEGIN ((?:.*? KEY)|CERTIFICATE)-----([0-9A-z\n\r\+\/\=]+)-----END \1-----$/m
var evp = require('evp_bytestokey')
var ciphers = require('browserify-aes')
var Buffer = require('safe-buffer').Buffer
module.exports = function (okey, password) {
  var key = okey.toString()
  var match = key.match(findProc)
  var decrypted
  if (!match) {
    var match2 = key.match(fullRegex)
    decrypted = new Buffer(match2[2].replace(/[\r\n]/g, ''), 'base64')
  } else {
    var suite = 'aes' + match[1]
    var iv = Buffer.from(match[2], 'hex')
    var cipherText = Buffer.from(match[3].replace(/[\r\n]/g, ''), 'base64')
    var cipherKey = evp(password, iv.slice(0, 8), parseInt(match[1], 10)).key
    var out = []
    var cipher = ciphers.createDecipheriv(suite, cipherKey, iv)
    out.push(cipher.update(cipherText))
    out.push(cipher.final())
    decrypted = Buffer.concat(out)
  }
  var tag = key.match(startRegex)[1]
  return {
    tag: tag,
    data: decrypted
  }
}

},{"browserify-aes":22,"evp_bytestokey":84,"safe-buffer":144}],112:[function(require,module,exports){
var asn1 = require('./asn1')
var aesid = require('./aesid.json')
var fixProc = require('./fixProc')
var ciphers = require('browserify-aes')
var compat = require('pbkdf2')
var Buffer = require('safe-buffer').Buffer
module.exports = parseKeys

function parseKeys (buffer) {
  var password
  if (typeof buffer === 'object' && !Buffer.isBuffer(buffer)) {
    password = buffer.passphrase
    buffer = buffer.key
  }
  if (typeof buffer === 'string') {
    buffer = Buffer.from(buffer)
  }

  var stripped = fixProc(buffer, password)

  var type = stripped.tag
  var data = stripped.data
  var subtype, ndata
  switch (type) {
    case 'CERTIFICATE':
      ndata = asn1.certificate.decode(data, 'der').tbsCertificate.subjectPublicKeyInfo
      // falls through
    case 'PUBLIC KEY':
      if (!ndata) {
        ndata = asn1.PublicKey.decode(data, 'der')
      }
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPublicKey.decode(ndata.subjectPublicKey.data, 'der')
        case '1.2.840.10045.2.1':
          ndata.subjectPrivateKey = ndata.subjectPublicKey
          return {
            type: 'ec',
            data: ndata
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.pub_key = asn1.DSAparam.decode(ndata.subjectPublicKey.data, 'der')
          return {
            type: 'dsa',
            data: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'ENCRYPTED PRIVATE KEY':
      data = asn1.EncryptedPrivateKey.decode(data, 'der')
      data = decrypt(data, password)
      // falls through
    case 'PRIVATE KEY':
      ndata = asn1.PrivateKey.decode(data, 'der')
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPrivateKey.decode(ndata.subjectPrivateKey, 'der')
        case '1.2.840.10045.2.1':
          return {
            curve: ndata.algorithm.curve,
            privateKey: asn1.ECPrivateKey.decode(ndata.subjectPrivateKey, 'der').privateKey
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.priv_key = asn1.DSAparam.decode(ndata.subjectPrivateKey, 'der')
          return {
            type: 'dsa',
            params: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'RSA PUBLIC KEY':
      return asn1.RSAPublicKey.decode(data, 'der')
    case 'RSA PRIVATE KEY':
      return asn1.RSAPrivateKey.decode(data, 'der')
    case 'DSA PRIVATE KEY':
      return {
        type: 'dsa',
        params: asn1.DSAPrivateKey.decode(data, 'der')
      }
    case 'EC PRIVATE KEY':
      data = asn1.ECPrivateKey.decode(data, 'der')
      return {
        curve: data.parameters.value,
        privateKey: data.privateKey
      }
    default: throw new Error('unknown key type ' + type)
  }
}
parseKeys.signature = asn1.signature
function decrypt (data, password) {
  var salt = data.algorithm.decrypt.kde.kdeparams.salt
  var iters = parseInt(data.algorithm.decrypt.kde.kdeparams.iters.toString(), 10)
  var algo = aesid[data.algorithm.decrypt.cipher.algo.join('.')]
  var iv = data.algorithm.decrypt.cipher.iv
  var cipherText = data.subjectPrivateKey
  var keylen = parseInt(algo.split('-')[1], 10) / 8
  var key = compat.pbkdf2Sync(password, salt, iters, keylen, 'sha1')
  var cipher = ciphers.createDecipheriv(algo, key, iv)
  var out = []
  out.push(cipher.update(cipherText))
  out.push(cipher.final())
  return Buffer.concat(out)
}

},{"./aesid.json":108,"./asn1":109,"./fixProc":111,"browserify-aes":22,"pbkdf2":113,"safe-buffer":144}],113:[function(require,module,exports){
exports.pbkdf2 = require('./lib/async')
exports.pbkdf2Sync = require('./lib/sync')

},{"./lib/async":114,"./lib/sync":117}],114:[function(require,module,exports){
(function (process,global){
var checkParameters = require('./precondition')
var defaultEncoding = require('./default-encoding')
var sync = require('./sync')
var Buffer = require('safe-buffer').Buffer

var ZERO_BUF
var subtle = global.crypto && global.crypto.subtle
var toBrowser = {
  'sha': 'SHA-1',
  'sha-1': 'SHA-1',
  'sha1': 'SHA-1',
  'sha256': 'SHA-256',
  'sha-256': 'SHA-256',
  'sha384': 'SHA-384',
  'sha-384': 'SHA-384',
  'sha-512': 'SHA-512',
  'sha512': 'SHA-512'
}
var checks = []
function checkNative (algo) {
  if (global.process && !global.process.browser) {
    return Promise.resolve(false)
  }
  if (!subtle || !subtle.importKey || !subtle.deriveBits) {
    return Promise.resolve(false)
  }
  if (checks[algo] !== undefined) {
    return checks[algo]
  }
  ZERO_BUF = ZERO_BUF || Buffer.alloc(8)
  var prom = browserPbkdf2(ZERO_BUF, ZERO_BUF, 10, 128, algo)
    .then(function () {
      return true
    }).catch(function () {
      return false
    })
  checks[algo] = prom
  return prom
}

function browserPbkdf2 (password, salt, iterations, length, algo) {
  return subtle.importKey(
    'raw', password, {name: 'PBKDF2'}, false, ['deriveBits']
  ).then(function (key) {
    return subtle.deriveBits({
      name: 'PBKDF2',
      salt: salt,
      iterations: iterations,
      hash: {
        name: algo
      }
    }, key, length << 3)
  }).then(function (res) {
    return Buffer.from(res)
  })
}

function resolvePromise (promise, callback) {
  promise.then(function (out) {
    process.nextTick(function () {
      callback(null, out)
    })
  }, function (e) {
    process.nextTick(function () {
      callback(e)
    })
  })
}
module.exports = function (password, salt, iterations, keylen, digest, callback) {
  if (typeof digest === 'function') {
    callback = digest
    digest = undefined
  }

  digest = digest || 'sha1'
  var algo = toBrowser[digest.toLowerCase()]

  if (!algo || typeof global.Promise !== 'function') {
    return process.nextTick(function () {
      var out
      try {
        out = sync(password, salt, iterations, keylen, digest)
      } catch (e) {
        return callback(e)
      }
      callback(null, out)
    })
  }

  checkParameters(password, salt, iterations, keylen)
  if (typeof callback !== 'function') throw new Error('No callback provided to pbkdf2')
  if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding)
  if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding)

  resolvePromise(checkNative(algo).then(function (resp) {
    if (resp) return browserPbkdf2(password, salt, iterations, keylen, algo)

    return sync(password, salt, iterations, keylen, digest)
  }), callback)
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./default-encoding":115,"./precondition":116,"./sync":117,"_process":119,"safe-buffer":144}],115:[function(require,module,exports){
(function (process){
var defaultEncoding
/* istanbul ignore next */
if (process.browser) {
  defaultEncoding = 'utf-8'
} else {
  var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10)

  defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary'
}
module.exports = defaultEncoding

}).call(this,require('_process'))
},{"_process":119}],116:[function(require,module,exports){
(function (Buffer){
var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs

function checkBuffer (buf, name) {
  if (typeof buf !== 'string' && !Buffer.isBuffer(buf)) {
    throw new TypeError(name + ' must be a buffer or string')
  }
}

module.exports = function (password, salt, iterations, keylen) {
  checkBuffer(password, 'Password')
  checkBuffer(salt, 'Salt')

  if (typeof iterations !== 'number') {
    throw new TypeError('Iterations not a number')
  }

  if (iterations < 0) {
    throw new TypeError('Bad iterations')
  }

  if (typeof keylen !== 'number') {
    throw new TypeError('Key length not a number')
  }

  if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */
    throw new TypeError('Bad key length')
  }
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":101}],117:[function(require,module,exports){
var md5 = require('create-hash/md5')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')

var checkParameters = require('./precondition')
var defaultEncoding = require('./default-encoding')
var Buffer = require('safe-buffer').Buffer
var ZEROS = Buffer.alloc(128)
var sizes = {
  md5: 16,
  sha1: 20,
  sha224: 28,
  sha256: 32,
  sha384: 48,
  sha512: 64,
  rmd160: 20,
  ripemd160: 20
}

function Hmac (alg, key, saltLen) {
  var hash = getDigest(alg)
  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64

  if (key.length > blocksize) {
    key = hash(key)
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = Buffer.allocUnsafe(blocksize + sizes[alg])
  var opad = Buffer.allocUnsafe(blocksize + sizes[alg])
  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  var ipad1 = Buffer.allocUnsafe(blocksize + saltLen + 4)
  ipad.copy(ipad1, 0, 0, blocksize)
  this.ipad1 = ipad1
  this.ipad2 = ipad
  this.opad = opad
  this.alg = alg
  this.blocksize = blocksize
  this.hash = hash
  this.size = sizes[alg]
}

Hmac.prototype.run = function (data, ipad) {
  data.copy(ipad, this.blocksize)
  var h = this.hash(ipad)
  h.copy(this.opad, this.blocksize)
  return this.hash(this.opad)
}

function getDigest (alg) {
  function shaFunc (data) {
    return sha(alg).update(data).digest()
  }
  function rmd160Func (data) {
    return new RIPEMD160().update(data).digest()
  }

  if (alg === 'rmd160' || alg === 'ripemd160') return rmd160Func
  if (alg === 'md5') return md5
  return shaFunc
}

function pbkdf2 (password, salt, iterations, keylen, digest) {
  checkParameters(password, salt, iterations, keylen)

  if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding)
  if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding)

  digest = digest || 'sha1'

  var hmac = new Hmac(digest, password, salt.length)

  var DK = Buffer.allocUnsafe(keylen)
  var block1 = Buffer.allocUnsafe(salt.length + 4)
  salt.copy(block1, 0, 0, salt.length)

  var destPos = 0
  var hLen = sizes[digest]
  var l = Math.ceil(keylen / hLen)

  for (var i = 1; i <= l; i++) {
    block1.writeUInt32BE(i, salt.length)

    var T = hmac.run(block1, hmac.ipad1)
    var U = T

    for (var j = 1; j < iterations; j++) {
      U = hmac.run(U, hmac.ipad2)
      for (var k = 0; k < hLen; k++) T[k] ^= U[k]
    }

    T.copy(DK, destPos)
    destPos += hLen
  }

  return DK
}

module.exports = pbkdf2

},{"./default-encoding":115,"./precondition":116,"create-hash/md5":53,"ripemd160":143,"safe-buffer":144,"sha.js":146}],118:[function(require,module,exports){
(function (process){
'use strict';

if (typeof process === 'undefined' ||
    !process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = { nextTick: nextTick };
} else {
  module.exports = process
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}


}).call(this,require('_process'))
},{"_process":119}],119:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],120:[function(require,module,exports){
exports.publicEncrypt = require('./publicEncrypt')
exports.privateDecrypt = require('./privateDecrypt')

exports.privateEncrypt = function privateEncrypt (key, buf) {
  return exports.publicEncrypt(key, buf, true)
}

exports.publicDecrypt = function publicDecrypt (key, buf) {
  return exports.privateDecrypt(key, buf, true)
}

},{"./privateDecrypt":122,"./publicEncrypt":123}],121:[function(require,module,exports){
var createHash = require('create-hash')
var Buffer = require('safe-buffer').Buffer

module.exports = function (seed, len) {
  var t = Buffer.alloc(0)
  var i = 0
  var c
  while (t.length < len) {
    c = i2ops(i++)
    t = Buffer.concat([t, createHash('sha1').update(seed).update(c).digest()])
  }
  return t.slice(0, len)
}

function i2ops (c) {
  var out = Buffer.allocUnsafe(4)
  out.writeUInt32BE(c, 0)
  return out
}

},{"create-hash":52,"safe-buffer":144}],122:[function(require,module,exports){
var parseKeys = require('parse-asn1')
var mgf = require('./mgf')
var xor = require('./xor')
var BN = require('bn.js')
var crt = require('browserify-rsa')
var createHash = require('create-hash')
var withPublic = require('./withPublic')
var Buffer = require('safe-buffer').Buffer

module.exports = function privateDecrypt (privateKey, enc, reverse) {
  var padding
  if (privateKey.padding) {
    padding = privateKey.padding
  } else if (reverse) {
    padding = 1
  } else {
    padding = 4
  }

  var key = parseKeys(privateKey)
  var k = key.modulus.byteLength()
  if (enc.length > k || new BN(enc).cmp(key.modulus) >= 0) {
    throw new Error('decryption error')
  }
  var msg
  if (reverse) {
    msg = withPublic(new BN(enc), key)
  } else {
    msg = crt(enc, key)
  }
  var zBuffer = Buffer.alloc(k - msg.length)
  msg = Buffer.concat([zBuffer, msg], k)
  if (padding === 4) {
    return oaep(key, msg)
  } else if (padding === 1) {
    return pkcs1(key, msg, reverse)
  } else if (padding === 3) {
    return msg
  } else {
    throw new Error('unknown padding')
  }
}

function oaep (key, msg) {
  var k = key.modulus.byteLength()
  var iHash = createHash('sha1').update(Buffer.alloc(0)).digest()
  var hLen = iHash.length
  if (msg[0] !== 0) {
    throw new Error('decryption error')
  }
  var maskedSeed = msg.slice(1, hLen + 1)
  var maskedDb = msg.slice(hLen + 1)
  var seed = xor(maskedSeed, mgf(maskedDb, hLen))
  var db = xor(maskedDb, mgf(seed, k - hLen - 1))
  if (compare(iHash, db.slice(0, hLen))) {
    throw new Error('decryption error')
  }
  var i = hLen
  while (db[i] === 0) {
    i++
  }
  if (db[i++] !== 1) {
    throw new Error('decryption error')
  }
  return db.slice(i)
}

function pkcs1 (key, msg, reverse) {
  var p1 = msg.slice(0, 2)
  var i = 2
  var status = 0
  while (msg[i++] !== 0) {
    if (i >= msg.length) {
      status++
      break
    }
  }
  var ps = msg.slice(2, i - 1)

  if ((p1.toString('hex') !== '0002' && !reverse) || (p1.toString('hex') !== '0001' && reverse)) {
    status++
  }
  if (ps.length < 8) {
    status++
  }
  if (status) {
    throw new Error('decryption error')
  }
  return msg.slice(i)
}
function compare (a, b) {
  a = Buffer.from(a)
  b = Buffer.from(b)
  var dif = 0
  var len = a.length
  if (a.length !== b.length) {
    dif++
    len = Math.min(a.length, b.length)
  }
  var i = -1
  while (++i < len) {
    dif += (a[i] ^ b[i])
  }
  return dif
}

},{"./mgf":121,"./withPublic":124,"./xor":125,"bn.js":17,"browserify-rsa":40,"create-hash":52,"parse-asn1":112,"safe-buffer":144}],123:[function(require,module,exports){
var parseKeys = require('parse-asn1')
var randomBytes = require('randombytes')
var createHash = require('create-hash')
var mgf = require('./mgf')
var xor = require('./xor')
var BN = require('bn.js')
var withPublic = require('./withPublic')
var crt = require('browserify-rsa')
var Buffer = require('safe-buffer').Buffer

module.exports = function publicEncrypt (publicKey, msg, reverse) {
  var padding
  if (publicKey.padding) {
    padding = publicKey.padding
  } else if (reverse) {
    padding = 1
  } else {
    padding = 4
  }
  var key = parseKeys(publicKey)
  var paddedMsg
  if (padding === 4) {
    paddedMsg = oaep(key, msg)
  } else if (padding === 1) {
    paddedMsg = pkcs1(key, msg, reverse)
  } else if (padding === 3) {
    paddedMsg = new BN(msg)
    if (paddedMsg.cmp(key.modulus) >= 0) {
      throw new Error('data too long for modulus')
    }
  } else {
    throw new Error('unknown padding')
  }
  if (reverse) {
    return crt(paddedMsg, key)
  } else {
    return withPublic(paddedMsg, key)
  }
}

function oaep (key, msg) {
  var k = key.modulus.byteLength()
  var mLen = msg.length
  var iHash = createHash('sha1').update(Buffer.alloc(0)).digest()
  var hLen = iHash.length
  var hLen2 = 2 * hLen
  if (mLen > k - hLen2 - 2) {
    throw new Error('message too long')
  }
  var ps = Buffer.alloc(k - mLen - hLen2 - 2)
  var dblen = k - hLen - 1
  var seed = randomBytes(hLen)
  var maskedDb = xor(Buffer.concat([iHash, ps, Buffer.alloc(1, 1), msg], dblen), mgf(seed, dblen))
  var maskedSeed = xor(seed, mgf(maskedDb, hLen))
  return new BN(Buffer.concat([Buffer.alloc(1), maskedSeed, maskedDb], k))
}
function pkcs1 (key, msg, reverse) {
  var mLen = msg.length
  var k = key.modulus.byteLength()
  if (mLen > k - 11) {
    throw new Error('message too long')
  }
  var ps
  if (reverse) {
    ps = Buffer.alloc(k - mLen - 3, 0xff)
  } else {
    ps = nonZero(k - mLen - 3)
  }
  return new BN(Buffer.concat([Buffer.from([0, reverse ? 1 : 2]), ps, Buffer.alloc(1), msg], k))
}
function nonZero (len) {
  var out = Buffer.allocUnsafe(len)
  var i = 0
  var cache = randomBytes(len * 2)
  var cur = 0
  var num
  while (i < len) {
    if (cur === cache.length) {
      cache = randomBytes(len * 2)
      cur = 0
    }
    num = cache[cur++]
    if (num) {
      out[i++] = num
    }
  }
  return out
}

},{"./mgf":121,"./withPublic":124,"./xor":125,"bn.js":17,"browserify-rsa":40,"create-hash":52,"parse-asn1":112,"randombytes":126,"safe-buffer":144}],124:[function(require,module,exports){
var BN = require('bn.js')
var Buffer = require('safe-buffer').Buffer

function withPublic (paddedMsg, key) {
  return Buffer.from(paddedMsg
    .toRed(BN.mont(key.modulus))
    .redPow(new BN(key.publicExponent))
    .fromRed()
    .toArray())
}

module.exports = withPublic

},{"bn.js":17,"safe-buffer":144}],125:[function(require,module,exports){
module.exports = function xor (a, b) {
  var len = a.length
  var i = -1
  while (++i < len) {
    a[i] ^= b[i]
  }
  return a
}

},{}],126:[function(require,module,exports){
(function (process,global){
'use strict'

// limit of Crypto.getRandomValues()
// https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues
var MAX_BYTES = 65536

// Node supports requesting up to this number of bytes
// https://github.com/nodejs/node/blob/master/lib/internal/crypto/random.js#L48
var MAX_UINT32 = 4294967295

function oldBrowser () {
  throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11')
}

var Buffer = require('safe-buffer').Buffer
var crypto = global.crypto || global.msCrypto

if (crypto && crypto.getRandomValues) {
  module.exports = randomBytes
} else {
  module.exports = oldBrowser
}

function randomBytes (size, cb) {
  // phantomjs needs to throw
  if (size > MAX_UINT32) throw new RangeError('requested too many random bytes')

  var bytes = Buffer.allocUnsafe(size)

  if (size > 0) {  // getRandomValues fails on IE if size == 0
    if (size > MAX_BYTES) { // this is the max bytes crypto.getRandomValues
      // can do at once see https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
      for (var generated = 0; generated < size; generated += MAX_BYTES) {
        // buffer.slice automatically checks if the end is past the end of
        // the buffer so we don't have to here
        crypto.getRandomValues(bytes.slice(generated, generated + MAX_BYTES))
      }
    } else {
      crypto.getRandomValues(bytes)
    }
  }

  if (typeof cb === 'function') {
    return process.nextTick(function () {
      cb(null, bytes)
    })
  }

  return bytes
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":119,"safe-buffer":144}],127:[function(require,module,exports){
(function (process,global){
'use strict'

function oldBrowser () {
  throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11')
}
var safeBuffer = require('safe-buffer')
var randombytes = require('randombytes')
var Buffer = safeBuffer.Buffer
var kBufferMaxLength = safeBuffer.kMaxLength
var crypto = global.crypto || global.msCrypto
var kMaxUint32 = Math.pow(2, 32) - 1
function assertOffset (offset, length) {
  if (typeof offset !== 'number' || offset !== offset) { // eslint-disable-line no-self-compare
    throw new TypeError('offset must be a number')
  }

  if (offset > kMaxUint32 || offset < 0) {
    throw new TypeError('offset must be a uint32')
  }

  if (offset > kBufferMaxLength || offset > length) {
    throw new RangeError('offset out of range')
  }
}

function assertSize (size, offset, length) {
  if (typeof size !== 'number' || size !== size) { // eslint-disable-line no-self-compare
    throw new TypeError('size must be a number')
  }

  if (size > kMaxUint32 || size < 0) {
    throw new TypeError('size must be a uint32')
  }

  if (size + offset > length || size > kBufferMaxLength) {
    throw new RangeError('buffer too small')
  }
}
if ((crypto && crypto.getRandomValues) || !process.browser) {
  exports.randomFill = randomFill
  exports.randomFillSync = randomFillSync
} else {
  exports.randomFill = oldBrowser
  exports.randomFillSync = oldBrowser
}
function randomFill (buf, offset, size, cb) {
  if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) {
    throw new TypeError('"buf" argument must be a Buffer or Uint8Array')
  }

  if (typeof offset === 'function') {
    cb = offset
    offset = 0
    size = buf.length
  } else if (typeof size === 'function') {
    cb = size
    size = buf.length - offset
  } else if (typeof cb !== 'function') {
    throw new TypeError('"cb" argument must be a function')
  }
  assertOffset(offset, buf.length)
  assertSize(size, offset, buf.length)
  return actualFill(buf, offset, size, cb)
}

function actualFill (buf, offset, size, cb) {
  if (process.browser) {
    var ourBuf = buf.buffer
    var uint = new Uint8Array(ourBuf, offset, size)
    crypto.getRandomValues(uint)
    if (cb) {
      process.nextTick(function () {
        cb(null, buf)
      })
      return
    }
    return buf
  }
  if (cb) {
    randombytes(size, function (err, bytes) {
      if (err) {
        return cb(err)
      }
      bytes.copy(buf, offset)
      cb(null, buf)
    })
    return
  }
  var bytes = randombytes(size)
  bytes.copy(buf, offset)
  return buf
}
function randomFillSync (buf, offset, size) {
  if (typeof offset === 'undefined') {
    offset = 0
  }
  if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) {
    throw new TypeError('"buf" argument must be a Buffer or Uint8Array')
  }

  assertOffset(offset, buf.length)

  if (size === undefined) size = buf.length - offset

  assertSize(size, offset, buf.length)

  return actualFill(buf, offset, size)
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":119,"randombytes":126,"safe-buffer":144}],128:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');

},{"./lib/_stream_duplex.js":129}],129:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

{
  // avoid scope creep, the keys array can then be collected
  var keys = objectKeys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  pna.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }
    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});

Duplex.prototype._destroy = function (err, cb) {
  this.push(null);
  this.end();

  pna.nextTick(cb, err);
};
},{"./_stream_readable":131,"./_stream_writable":133,"core-util-is":50,"inherits":100,"process-nextick-args":118}],130:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":132,"core-util-is":50,"inherits":100}],131:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // has it been destroyed
  this.destroyed = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined) {
      return false;
    }
    return this._readableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
  }
});

Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
  this.push(null);
  cb(err);
};

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }
      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        stream.emit('error', new Error('stream.push() after EOF'));
      } else {
        state.reading = false;
        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  }

  return needMoreData(state);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    stream.emit('data', chunk);
    stream.read(0);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

    if (state.needReadable) emitReadable(stream);
  }
  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;
  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    pna.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        pna.nextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    pna.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._readableState.highWaterMark;
  }
});

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = Buffer.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    pna.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":129,"./internal/streams/BufferList":134,"./internal/streams/destroy":135,"./internal/streams/stream":136,"_process":119,"core-util-is":50,"events":83,"inherits":100,"isarray":102,"process-nextick-args":118,"safe-buffer":137,"string_decoder/":138,"util":19}],132:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":129,"core-util-is":50,"inherits":100}],133:[function(require,module,exports){
(function (process,global,setImmediate){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Writable;

/* <replacement> */
function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;
  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

var destroyImpl = require('./internal/streams/destroy');

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // has it been destroyed
  this.destroyed = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  pna.nextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    pna.nextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }
  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    pna.nextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    pna.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
    // this can emit finish, but finish must
    // always follow error
    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, cb);
};

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;
    if (err) {
      stream.emit('error', err);
    }
    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}
function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function') {
      state.pendingcb++;
      state.finalCalled = true;
      pna.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  if (state.corkedRequestsFree) {
    state.corkedRequestsFree.next = corkReq;
  } else {
    state.corkedRequestsFree = corkReq;
  }
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  get: function () {
    if (this._writableState === undefined) {
      return false;
    }
    return this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._writableState.destroyed = value;
  }
});

Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
  this.end();
  cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":129,"./internal/streams/destroy":135,"./internal/streams/stream":136,"_process":119,"core-util-is":50,"inherits":100,"process-nextick-args":118,"safe-buffer":137,"timers":155,"util-deprecate":156}],134:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = require('safe-buffer').Buffer;
var util = require('util');

function copyBuffer(src, target, offset) {
  src.copy(target, offset);
}

module.exports = function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function push(v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function unshift(v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function shift() {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function clear() {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function join(s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function concat(n) {
    if (this.length === 0) return Buffer.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      copyBuffer(p.data, ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  return BufferList;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}
},{"safe-buffer":137,"util":19}],135:[function(require,module,exports){
'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      pna.nextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      pna.nextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy
};
},{"process-nextick-args":118}],136:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":83}],137:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":48}],138:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":137}],139:[function(require,module,exports){
module.exports = require('./readable').PassThrough

},{"./readable":140}],140:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":129,"./lib/_stream_passthrough.js":130,"./lib/_stream_readable.js":131,"./lib/_stream_transform.js":132,"./lib/_stream_writable.js":133}],141:[function(require,module,exports){
module.exports = require('./readable').Transform

},{"./readable":140}],142:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');

},{"./lib/_stream_writable.js":133}],143:[function(require,module,exports){
'use strict'
var Buffer = require('buffer').Buffer
var inherits = require('inherits')
var HashBase = require('hash-base')

var ARRAY16 = new Array(16)

var zl = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
]

var zr = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
]

var sl = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
]

var sr = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
]

var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e]
var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000]

function RIPEMD160 () {
  HashBase.call(this, 64)

  // state
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0
}

inherits(RIPEMD160, HashBase)

RIPEMD160.prototype._update = function () {
  var words = ARRAY16
  for (var j = 0; j < 16; ++j) words[j] = this._block.readInt32LE(j * 4)

  var al = this._a | 0
  var bl = this._b | 0
  var cl = this._c | 0
  var dl = this._d | 0
  var el = this._e | 0

  var ar = this._a | 0
  var br = this._b | 0
  var cr = this._c | 0
  var dr = this._d | 0
  var er = this._e | 0

  // computation
  for (var i = 0; i < 80; i += 1) {
    var tl
    var tr
    if (i < 16) {
      tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i])
      tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i])
    } else if (i < 32) {
      tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i])
      tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i])
    } else if (i < 48) {
      tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i])
      tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i])
    } else if (i < 64) {
      tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i])
      tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i])
    } else { // if (i<80) {
      tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i])
      tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i])
    }

    al = el
    el = dl
    dl = rotl(cl, 10)
    cl = bl
    bl = tl

    ar = er
    er = dr
    dr = rotl(cr, 10)
    cr = br
    br = tr
  }

  // update state
  var t = (this._b + cl + dr) | 0
  this._b = (this._c + dl + er) | 0
  this._c = (this._d + el + ar) | 0
  this._d = (this._e + al + br) | 0
  this._e = (this._a + bl + cr) | 0
  this._a = t
}

RIPEMD160.prototype._digest = function () {
  // create padding and handle blocks
  this._block[this._blockOffset++] = 0x80
  if (this._blockOffset > 56) {
    this._block.fill(0, this._blockOffset, 64)
    this._update()
    this._blockOffset = 0
  }

  this._block.fill(0, this._blockOffset, 56)
  this._block.writeUInt32LE(this._length[0], 56)
  this._block.writeUInt32LE(this._length[1], 60)
  this._update()

  // produce result
  var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20)
  buffer.writeInt32LE(this._a, 0)
  buffer.writeInt32LE(this._b, 4)
  buffer.writeInt32LE(this._c, 8)
  buffer.writeInt32LE(this._d, 12)
  buffer.writeInt32LE(this._e, 16)
  return buffer
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function fn1 (a, b, c, d, e, m, k, s) {
  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
}

function fn2 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
}

function fn3 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
}

function fn4 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
}

function fn5 (a, b, c, d, e, m, k, s) {
  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
}

module.exports = RIPEMD160

},{"buffer":48,"hash-base":85,"inherits":100}],144:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.prototype = Object.create(Buffer.prototype)

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":48}],145:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

// prototype class for hash functions
function Hash (blockSize, finalSize) {
  this._block = Buffer.alloc(blockSize)
  this._finalSize = finalSize
  this._blockSize = blockSize
  this._len = 0
}

Hash.prototype.update = function (data, enc) {
  if (typeof data === 'string') {
    enc = enc || 'utf8'
    data = Buffer.from(data, enc)
  }

  var block = this._block
  var blockSize = this._blockSize
  var length = data.length
  var accum = this._len

  for (var offset = 0; offset < length;) {
    var assigned = accum % blockSize
    var remainder = Math.min(length - offset, blockSize - assigned)

    for (var i = 0; i < remainder; i++) {
      block[assigned + i] = data[offset + i]
    }

    accum += remainder
    offset += remainder

    if ((accum % blockSize) === 0) {
      this._update(block)
    }
  }

  this._len += length
  return this
}

Hash.prototype.digest = function (enc) {
  var rem = this._len % this._blockSize

  this._block[rem] = 0x80

  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
  this._block.fill(0, rem + 1)

  if (rem >= this._finalSize) {
    this._update(this._block)
    this._block.fill(0)
  }

  var bits = this._len * 8

  // uint32
  if (bits <= 0xffffffff) {
    this._block.writeUInt32BE(bits, this._blockSize - 4)

  // uint64
  } else {
    var lowBits = (bits & 0xffffffff) >>> 0
    var highBits = (bits - lowBits) / 0x100000000

    this._block.writeUInt32BE(highBits, this._blockSize - 8)
    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
  }

  this._update(this._block)
  var hash = this._hash()

  return enc ? hash.toString(enc) : hash
}

Hash.prototype._update = function () {
  throw new Error('_update must be implemented by subclass')
}

module.exports = Hash

},{"safe-buffer":144}],146:[function(require,module,exports){
var exports = module.exports = function SHA (algorithm) {
  algorithm = algorithm.toLowerCase()

  var Algorithm = exports[algorithm]
  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')

  return new Algorithm()
}

exports.sha = require('./sha')
exports.sha1 = require('./sha1')
exports.sha224 = require('./sha224')
exports.sha256 = require('./sha256')
exports.sha384 = require('./sha384')
exports.sha512 = require('./sha512')

},{"./sha":147,"./sha1":148,"./sha224":149,"./sha256":150,"./sha384":151,"./sha512":152}],147:[function(require,module,exports){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
 * in FIPS PUB 180-1
 * This source code is derived from sha1.js of the same repository.
 * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
 * operation was added.
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]

var W = new Array(80)

function Sha () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha, Hash)

Sha.prototype.init = function () {
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0

  return this
}

function rotl5 (num) {
  return (num << 5) | (num >>> 27)
}

function rotl30 (num) {
  return (num << 30) | (num >>> 2)
}

function ft (s, b, c, d) {
  if (s === 0) return (b & c) | ((~b) & d)
  if (s === 2) return (b & c) | (b & d) | (c & d)
  return b ^ c ^ d
}

Sha.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]

  for (var j = 0; j < 80; ++j) {
    var s = ~~(j / 20)
    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0

    e = d
    d = c
    c = rotl30(b)
    b = a
    a = t
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha.prototype._hash = function () {
  var H = Buffer.allocUnsafe(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha

},{"./hash":145,"inherits":100,"safe-buffer":144}],148:[function(require,module,exports){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]

var W = new Array(80)

function Sha1 () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha1, Hash)

Sha1.prototype.init = function () {
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0

  return this
}

function rotl1 (num) {
  return (num << 1) | (num >>> 31)
}

function rotl5 (num) {
  return (num << 5) | (num >>> 27)
}

function rotl30 (num) {
  return (num << 30) | (num >>> 2)
}

function ft (s, b, c, d) {
  if (s === 0) return (b & c) | ((~b) & d)
  if (s === 2) return (b & c) | (b & d) | (c & d)
  return b ^ c ^ d
}

Sha1.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])

  for (var j = 0; j < 80; ++j) {
    var s = ~~(j / 20)
    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0

    e = d
    d = c
    c = rotl30(b)
    b = a
    a = t
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha1.prototype._hash = function () {
  var H = Buffer.allocUnsafe(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha1

},{"./hash":145,"inherits":100,"safe-buffer":144}],149:[function(require,module,exports){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Sha256 = require('./sha256')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var W = new Array(64)

function Sha224 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha224, Sha256)

Sha224.prototype.init = function () {
  this._a = 0xc1059ed8
  this._b = 0x367cd507
  this._c = 0x3070dd17
  this._d = 0xf70e5939
  this._e = 0xffc00b31
  this._f = 0x68581511
  this._g = 0x64f98fa7
  this._h = 0xbefa4fa4

  return this
}

Sha224.prototype._hash = function () {
  var H = Buffer.allocUnsafe(28)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)

  return H
}

module.exports = Sha224

},{"./hash":145,"./sha256":150,"inherits":100,"safe-buffer":144}],150:[function(require,module,exports){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
]

var W = new Array(64)

function Sha256 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha256, Hash)

Sha256.prototype.init = function () {
  this._a = 0x6a09e667
  this._b = 0xbb67ae85
  this._c = 0x3c6ef372
  this._d = 0xa54ff53a
  this._e = 0x510e527f
  this._f = 0x9b05688c
  this._g = 0x1f83d9ab
  this._h = 0x5be0cd19

  return this
}

function ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function sigma0 (x) {
  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
}

function sigma1 (x) {
  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
}

function gamma0 (x) {
  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
}

function gamma1 (x) {
  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
}

Sha256.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0
  var f = this._f | 0
  var g = this._g | 0
  var h = this._h | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0

  for (var j = 0; j < 64; ++j) {
    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
    var T2 = (sigma0(a) + maj(a, b, c)) | 0

    h = g
    g = f
    f = e
    e = (d + T1) | 0
    d = c
    c = b
    b = a
    a = (T1 + T2) | 0
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
  this._f = (f + this._f) | 0
  this._g = (g + this._g) | 0
  this._h = (h + this._h) | 0
}

Sha256.prototype._hash = function () {
  var H = Buffer.allocUnsafe(32)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)
  H.writeInt32BE(this._h, 28)

  return H
}

module.exports = Sha256

},{"./hash":145,"inherits":100,"safe-buffer":144}],151:[function(require,module,exports){
var inherits = require('inherits')
var SHA512 = require('./sha512')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var W = new Array(160)

function Sha384 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha384, SHA512)

Sha384.prototype.init = function () {
  this._ah = 0xcbbb9d5d
  this._bh = 0x629a292a
  this._ch = 0x9159015a
  this._dh = 0x152fecd8
  this._eh = 0x67332667
  this._fh = 0x8eb44a87
  this._gh = 0xdb0c2e0d
  this._hh = 0x47b5481d

  this._al = 0xc1059ed8
  this._bl = 0x367cd507
  this._cl = 0x3070dd17
  this._dl = 0xf70e5939
  this._el = 0xffc00b31
  this._fl = 0x68581511
  this._gl = 0x64f98fa7
  this._hl = 0xbefa4fa4

  return this
}

Sha384.prototype._hash = function () {
  var H = Buffer.allocUnsafe(48)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._ah, this._al, 0)
  writeInt64BE(this._bh, this._bl, 8)
  writeInt64BE(this._ch, this._cl, 16)
  writeInt64BE(this._dh, this._dl, 24)
  writeInt64BE(this._eh, this._el, 32)
  writeInt64BE(this._fh, this._fl, 40)

  return H
}

module.exports = Sha384

},{"./hash":145,"./sha512":152,"inherits":100,"safe-buffer":144}],152:[function(require,module,exports){
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
]

var W = new Array(160)

function Sha512 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha512, Hash)

Sha512.prototype.init = function () {
  this._ah = 0x6a09e667
  this._bh = 0xbb67ae85
  this._ch = 0x3c6ef372
  this._dh = 0xa54ff53a
  this._eh = 0x510e527f
  this._fh = 0x9b05688c
  this._gh = 0x1f83d9ab
  this._hh = 0x5be0cd19

  this._al = 0xf3bcc908
  this._bl = 0x84caa73b
  this._cl = 0xfe94f82b
  this._dl = 0x5f1d36f1
  this._el = 0xade682d1
  this._fl = 0x2b3e6c1f
  this._gl = 0xfb41bd6b
  this._hl = 0x137e2179

  return this
}

function Ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function sigma0 (x, xl) {
  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
}

function sigma1 (x, xl) {
  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
}

function Gamma0 (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
}

function Gamma0l (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
}

function Gamma1 (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
}

function Gamma1l (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
}

function getCarry (a, b) {
  return (a >>> 0) < (b >>> 0) ? 1 : 0
}

Sha512.prototype._update = function (M) {
  var W = this._w

  var ah = this._ah | 0
  var bh = this._bh | 0
  var ch = this._ch | 0
  var dh = this._dh | 0
  var eh = this._eh | 0
  var fh = this._fh | 0
  var gh = this._gh | 0
  var hh = this._hh | 0

  var al = this._al | 0
  var bl = this._bl | 0
  var cl = this._cl | 0
  var dl = this._dl | 0
  var el = this._el | 0
  var fl = this._fl | 0
  var gl = this._gl | 0
  var hl = this._hl | 0

  for (var i = 0; i < 32; i += 2) {
    W[i] = M.readInt32BE(i * 4)
    W[i + 1] = M.readInt32BE(i * 4 + 4)
  }
  for (; i < 160; i += 2) {
    var xh = W[i - 15 * 2]
    var xl = W[i - 15 * 2 + 1]
    var gamma0 = Gamma0(xh, xl)
    var gamma0l = Gamma0l(xl, xh)

    xh = W[i - 2 * 2]
    xl = W[i - 2 * 2 + 1]
    var gamma1 = Gamma1(xh, xl)
    var gamma1l = Gamma1l(xl, xh)

    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
    var Wi7h = W[i - 7 * 2]
    var Wi7l = W[i - 7 * 2 + 1]

    var Wi16h = W[i - 16 * 2]
    var Wi16l = W[i - 16 * 2 + 1]

    var Wil = (gamma0l + Wi7l) | 0
    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
    Wil = (Wil + gamma1l) | 0
    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
    Wil = (Wil + Wi16l) | 0
    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0

    W[i] = Wih
    W[i + 1] = Wil
  }

  for (var j = 0; j < 160; j += 2) {
    Wih = W[j]
    Wil = W[j + 1]

    var majh = maj(ah, bh, ch)
    var majl = maj(al, bl, cl)

    var sigma0h = sigma0(ah, al)
    var sigma0l = sigma0(al, ah)
    var sigma1h = sigma1(eh, el)
    var sigma1l = sigma1(el, eh)

    // t1 = h + sigma1 + ch + K[j] + W[j]
    var Kih = K[j]
    var Kil = K[j + 1]

    var chh = Ch(eh, fh, gh)
    var chl = Ch(el, fl, gl)

    var t1l = (hl + sigma1l) | 0
    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
    t1l = (t1l + chl) | 0
    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
    t1l = (t1l + Kil) | 0
    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
    t1l = (t1l + Wil) | 0
    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0

    // t2 = sigma0 + maj
    var t2l = (sigma0l + majl) | 0
    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0

    hh = gh
    hl = gl
    gh = fh
    gl = fl
    fh = eh
    fl = el
    el = (dl + t1l) | 0
    eh = (dh + t1h + getCarry(el, dl)) | 0
    dh = ch
    dl = cl
    ch = bh
    cl = bl
    bh = ah
    bl = al
    al = (t1l + t2l) | 0
    ah = (t1h + t2h + getCarry(al, t1l)) | 0
  }

  this._al = (this._al + al) | 0
  this._bl = (this._bl + bl) | 0
  this._cl = (this._cl + cl) | 0
  this._dl = (this._dl + dl) | 0
  this._el = (this._el + el) | 0
  this._fl = (this._fl + fl) | 0
  this._gl = (this._gl + gl) | 0
  this._hl = (this._hl + hl) | 0

  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
}

Sha512.prototype._hash = function () {
  var H = Buffer.allocUnsafe(64)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._ah, this._al, 0)
  writeInt64BE(this._bh, this._bl, 8)
  writeInt64BE(this._ch, this._cl, 16)
  writeInt64BE(this._dh, this._dl, 24)
  writeInt64BE(this._eh, this._el, 32)
  writeInt64BE(this._fh, this._fl, 40)
  writeInt64BE(this._gh, this._gl, 48)
  writeInt64BE(this._hh, this._hl, 56)

  return H
}

module.exports = Sha512

},{"./hash":145,"inherits":100,"safe-buffer":144}],153:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":83,"inherits":100,"readable-stream/duplex.js":128,"readable-stream/passthrough.js":139,"readable-stream/readable.js":140,"readable-stream/transform.js":141,"readable-stream/writable.js":142}],154:[function(require,module,exports){
arguments[4][138][0].apply(exports,arguments)
},{"dup":138,"safe-buffer":144}],155:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(window, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  var id = nextImmediateId++;
  var args = arguments.length < 2 ? false : slice.call(arguments, 1);

  immediateIds[id] = true;

  nextTick(function onNextTick() {
    if (immediateIds[id]) {
      // fn.call() is faster so we optimize for the common use-case
      // @see http://jsperf.com/call-apply-segu
      if (args) {
        fn.apply(null, args);
      } else {
        fn.call(null);
      }
      // Prevent ids from leaking
      exports.clearImmediate(id);
    }
  });

  return id;
};

exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":119,"timers":155}],156:[function(require,module,exports){
(function (global){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],157:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],158:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],159:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":158,"_process":119,"inherits":157}],160:[function(require,module,exports){
var indexOf = function (xs, item) {
    if (xs.indexOf) return xs.indexOf(item);
    else for (var i = 0; i < xs.length; i++) {
        if (xs[i] === item) return i;
    }
    return -1;
};
var Object_keys = function (obj) {
    if (Object.keys) return Object.keys(obj)
    else {
        var res = [];
        for (var key in obj) res.push(key)
        return res;
    }
};

var forEach = function (xs, fn) {
    if (xs.forEach) return xs.forEach(fn)
    else for (var i = 0; i < xs.length; i++) {
        fn(xs[i], i, xs);
    }
};

var defineProp = (function() {
    try {
        Object.defineProperty({}, '_', {});
        return function(obj, name, value) {
            Object.defineProperty(obj, name, {
                writable: true,
                enumerable: false,
                configurable: true,
                value: value
            })
        };
    } catch(e) {
        return function(obj, name, value) {
            obj[name] = value;
        };
    }
}());

var globals = ['Array', 'Boolean', 'Date', 'Error', 'EvalError', 'Function',
'Infinity', 'JSON', 'Math', 'NaN', 'Number', 'Object', 'RangeError',
'ReferenceError', 'RegExp', 'String', 'SyntaxError', 'TypeError', 'URIError',
'decodeURI', 'decodeURIComponent', 'encodeURI', 'encodeURIComponent', 'escape',
'eval', 'isFinite', 'isNaN', 'parseFloat', 'parseInt', 'undefined', 'unescape'];

function Context() {}
Context.prototype = {};

var Script = exports.Script = function NodeScript (code) {
    if (!(this instanceof Script)) return new Script(code);
    this.code = code;
};

Script.prototype.runInContext = function (context) {
    if (!(context instanceof Context)) {
        throw new TypeError("needs a 'context' argument.");
    }
    
    var iframe = document.createElement('iframe');
    if (!iframe.style) iframe.style = {};
    iframe.style.display = 'none';
    
    document.body.appendChild(iframe);
    
    var win = iframe.contentWindow;
    var wEval = win.eval, wExecScript = win.execScript;

    if (!wEval && wExecScript) {
        // win.eval() magically appears when this is called in IE:
        wExecScript.call(win, 'null');
        wEval = win.eval;
    }
    
    forEach(Object_keys(context), function (key) {
        win[key] = context[key];
    });
    forEach(globals, function (key) {
        if (context[key]) {
            win[key] = context[key];
        }
    });
    
    var winKeys = Object_keys(win);

    var res = wEval.call(win, this.code);
    
    forEach(Object_keys(win), function (key) {
        // Avoid copying circular objects like `top` and `window` by only
        // updating existing context properties or new properties in the `win`
        // that was only introduced after the eval.
        if (key in context || indexOf(winKeys, key) === -1) {
            context[key] = win[key];
        }
    });

    forEach(globals, function (key) {
        if (!(key in context)) {
            defineProp(context, key, win[key]);
        }
    });
    
    document.body.removeChild(iframe);
    
    return res;
};

Script.prototype.runInThisContext = function () {
    return eval(this.code); // maybe...
};

Script.prototype.runInNewContext = function (context) {
    var ctx = Script.createContext(context);
    var res = this.runInContext(ctx);

    if (context) {
        forEach(Object_keys(ctx), function (key) {
            context[key] = ctx[key];
        });
    }

    return res;
};

forEach(Object_keys(Script.prototype), function (name) {
    exports[name] = Script[name] = function (code) {
        var s = Script(code);
        return s[name].apply(s, [].slice.call(arguments, 1));
    };
});

exports.isContext = function (context) {
    return context instanceof Context;
};

exports.createScript = function (code) {
    return exports.Script(code);
};

exports.createContext = Script.createContext = function (context) {
    var copy = new Context();
    if(typeof context === 'object') {
        forEach(Object_keys(context), function (key) {
            copy[key] = context[key];
        });
    }
    return copy;
};

},{}],161:[function(require,module,exports){
"use strict";

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var RoonApi = require("node-roon-api");
var RoonApiImage = require("node-roon-api-image");
var RoonApiTransport = require("node-roon-api-transport");
var RoonApiDisplayZone = require("./node-roon-api-displayzone.js");
var uuid = require("uuid/v4");
var detect_browser = require("detect-browser").detect;

var ip;
var port;
var core;

var FeatureImage = function () {
    function FeatureImage(imageKey) {
        var defaultImageUrl = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
        var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;

        _classCallCheck(this, FeatureImage);

        this.imageKey = imageKey;
        this.defaultImageUrl = defaultImageUrl;
        this.options = options;
        this.successful = true;
    }

    _createClass(FeatureImage, [{
        key: "releaseResources",
        value: function releaseResources() {
            console.log("releaseResources() called for FeatureImage with imageKey " + this.imageKey);
            delete this.blobPromise;
            delete this.blobUrlPromise;
            delete this.featuresPromise;

            if (this.blobUrl != null) {
                URL.revokeObjectURL(this.blobUrl);
                delete this.blobUrl;
            }
        }
    }, {
        key: "coreUrl",
        value: function coreUrl() {
            if (this.imageKey == null) return this.defaultImageUrl;
            var imgUrl = "http://" + ip + ":" + port + "/api/image/" + this.imageKey;
            if (this.options != null) imgUrl += "?" + $.param(this.options);
            console.log("using url: " + imgUrl);
            return imgUrl;
        }
    }, {
        key: "fetchBlob",
        value: function fetchBlob() {
            var _this2 = this;

            if (this.blobPromise == null) {
                var imgUrl = this.coreUrl();
                this.blobPromise = fetch(imgUrl).then(function (response) {
                    _this2.successful = true;
                    console.log("fetch with status " + response.status + " for " + _this2.imageKey);
                    if (response.status == '500') _this2.successful = false;
                    if (response.status == '404' && imgUrl.includes("16by7")) {
                      _this2.options.aspect = '4by3';
                      imgUrl = _this2.coreUrl();
                      return fetch(imgUrl).then(function (response) {
                        if (response.status == '500') _this2.successful = false;
                        console.log("fetch with status " + response.status + " for " +  _this2.imageKey);
                        return response.blob();
                      });
                    }
                    if (!response.ok && imgUrl !== _this2.defaultImageUrl && _this2.defaultImageUrl != null) {
                        return fetch(_this2.defaultImageUrl).then(function (response) {
                            console.log("fetch with status " + response.status + " for default image: " + _this2.defaultImageUrl);
                            return response.blob();
                        });
                    }
                    return response.blob();
                });
            }

            return this.blobPromise;
        }
    }, {
        key: "fetchBlobUrl",
        value: function fetchBlobUrl() {
            var _this3 = this;

            if (this.blobUrlPromise == null) {
                this.blobUrlPromise = this.fetchBlob().then(function (blob) {
                    _this3.blobUrl = URL.createObjectURL(blob);
                    console.log("created blob url " + _this3.blobUrl + " for " + _this3.imageKey);

                    return _this3.blobUrl;
                });
            }

            return this.blobUrlPromise;
        }
    }]);

    return FeatureImage;
}();

var graphicsModes = {};
var extraData = {};
var getExtraDataForZone = function getExtraDataForZone(zoneid) {
    var ed = extraData[zoneid];
    if (ed == null) {
        ed = {};
        extraData[zoneid] = ed;
    }

    return ed;
};

var clearExtraDataLyrics = function clearExtraDataLyrics() {
    Object.values(extraData).forEach(function (ed) {
        ed.lyrics = null;
    });
};

var isCast = function isCast() {
    return typeof uiMessageListener !== 'undefined';
};

if (typeof zoneid === 'undefined') window.zoneid = undefined;
if (typeof displaysettings === 'undefined') window.displaysettings = undefined;

var roon = new RoonApi({
    extension_id: 'com.roonlabs.display_zone',
    display_name: 'Roon API Display Zone',
    display_version: "1.0.0",
    publisher: 'Roon Labs, LLC',
    email: 'contact@roonlabs.com',
    log_level: 'none',

    core_paired: function core_paired(core_) {
        core = core_;
        fetchClientLogEnabled();
        core.services.RoonApiTransport.subscribe_zones(function (response, msg) {
            if (response == "Subscribed") {
                update_zones();
            } else if (response == "Changed") {
                if (msg.zones_added || msg.zones_changed) {
                    update_zones();
                }
                if (msg.zones_seek_changed) {
                    var now = Date.now();
                    msg.zones_seek_changed.forEach(function (x) {
                        var ed = getExtraDataForZone(x.zone_id);
                        ed.seek_position = x.seek_position;
                        if (x.zone_id == zoneid) {
                            updateProgress();
                            if (isCast()) preventSleep();
                        }
                    });
                }
            } else if (response == "WaveformChanged") {
                var ed = getExtraDataForZone(msg.zone_id);
                ed.waveform = msg.waveform;
                roonLog('info', 'WaveformChanged', {
                    zone_id:          msg.zone_id,
                    is_current_zone:  msg.zone_id == zoneid,
                    waveform_is_null: msg.waveform == null,
                    waveform_is_array: Array.isArray(msg.waveform),
                    waveform_length:  (msg.waveform && msg.waveform.length) || 0,
                    first3:           (msg.waveform && msg.waveform.slice) ? msg.waveform.slice(0, 3) : null
                });
                if (msg.zone_id == zoneid) {
                    updateWaveform();
                    updateProgress();
                }
            } else if (response == "LyricsChanged") {
                var _ed = getExtraDataForZone(msg.zone_id);
                if (_ed.lrcKey !== msg.key || _ed.lrcKey == null && msg.key == null && _ed.lrc !== msg.lrc) {
                    console.log("new LRC with key " + msg.key + " received for zone " + msg.zone_id);
                    _ed.lrcKey = msg.key;
                    _ed.lrc = msg.lrc;
                    _ed.lrc = msg.lrc;
                    _ed.lyrics = null;
                    _ed.lyricsViewReported = false;
                    if (msg.zone_id == zoneid) updateLyricsPosition();
                }
            }
        });
    },
    core_unpaired: function core_unpaired(core_) {
        core = undefined;
    }
});

var roonServices = {
    required_services: [RoonApiTransport, RoonApiImage]
};

var getAutoname = function getAutoname() {
    var browser = detect_browser();
    var autoName = browser.name.charAt(0).toUpperCase() + browser.name.slice(1);
    // let versionParts = browser.version.split('.');
    // if (versionParts != null && versionParts.length > 0)
    // {
    //     autoName += ' ' + versionParts[0];
    //     if (versionParts.length > 1 && versionParts[1] != 0) autoName += '.' + versionParts[1];
    // }
    if (browser.os != null) autoName += ' on ' + browser.os;

    return autoName;
};

if (!isCast()) {
    var zoneKey = localStorage.getItem("zone_key");
    if (zoneKey == null) {
        zoneKey = uuid();
        localStorage.setItem("zone_key", zoneKey);
    }
    try {
        zoneid = localStorage.getItem("active_zone");
        displaysettings = JSON.parse(localStorage.getItem("display_settings"));

        //there was a bug that caused the string "null" to be stored for these values
        if (zoneid === 'null') zoneid = null;
        if (displaysettings === 'null') displaysettings = null;
    } catch (error) {
        console.log('error retrieving settings from local storage: ' + error);
        console.log('resetting values');
        zoneid = undefined;
        displaysettings = undefined;
        localStorage.clear();
    }

    var svc_displayzone = new RoonApiDisplayZone(roon);
    svc_displayzone.addDisplayZone(zoneKey, getAutoname(), zoneid, function (active_zone) {
        var settings = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

        console.log("display zone callback: " + active_zone + " settings: " + JSON.stringify(settings));
        zoneid = active_zone;
        displaysettings = settings;

        if (zoneid != null) localStorage.setItem("active_zone", zoneid);else localStorage.removeItem("active_zone");

        if (settings != null) localStorage.setItem("display_settings", JSON.stringify(settings));else localStorage.removeItem("display_settings");

        $("#helpIcon").css('visibility', 'hidden');

        activeDisplayZoneChanged();
    }, function (settings) {
        console.log('display zone settings callback: ' + JSON.stringify(settings));
        displaysettings = settings;
        localStorage.setItem("display_settings", JSON.stringify(settings));
        updateLyricsPosition();
    });

    roonServices.provided_services = [svc_displayzone];
}

roon.init_services(roonServices);

var reconnectTimeout;
var go = function go(ip, port, token) {
    clearTimeout(reconnectTimeout);
    if (typeof token !== 'undefined') {
        roon.connect_to_host_with_token(ip, port, port, token, function () {
            console.log('Disconnected from Roon API, requesting data to reconnect');
            var request = { type: 'GET_MOO_DATA' };
            context.sendCustomMessage(ROON_CHANNEL, undefined, request);
        });
    } else {
        roon.connect_to_host(ip, port, port, function () {
            console.log('disconnected from broker. hiding UI, attempting reconnect in 10s');
            var splashLogo = $("#splashLogo");
            var uiParent = $("#uiParent");
            splashLogo.css('opacity', 1);
            uiParent.css('opacity', 0);
            document.title = 'Roon';

            reconnectTimeout = setTimeout(function () {
                go(ip, port);
            }, 10000);
        });
    }
};

var reportLrcView = function reportLrcView(lrcKey) {
    if (lrcKey == null) return;

    core.moo.send_request('com.roonlabs.transport:2/report_lrc_viewed', { key: lrcKey }, function (msg, body) {
        console.log("reportLrcView result: " + JSON.stringify(msg));
    });
};

// Forwards a log message to the RoonServer log via the com.roonlabs.client_log:1 service.
// Used to diagnose bugs on remote display surfaces (Cast on Nvidia Shield etc.) where we
// cannot otherwise observe console output. Always emits to local console as well, so the
// same call site is useful when running in a regular browser. Server-side handling is
// bit-gated (roon.broker.api.client_log_enabled) and entitlement-gated to display_zone.
//
// The bit state is cached client-side via fetchClientLogEnabled() so that when logging is
// disabled there is no WebSocket traffic — only a cheap boolean check. The cache is filled
// once on core pairing; if the bit is toggled at runtime the cast page needs a reload to
// pick up the new value.
//
// level: 'trace' | 'debug' | 'info' | 'warn' | 'error'
// data:  optional JSON-serializable extras
var _clientLogEnabled = false;
var fetchClientLogEnabled = function fetchClientLogEnabled() {
    if (core == null || core.moo == null) return;
    core.moo.send_request('com.roonlabs.client_log:1/enabled', {}, function (msg, body) {
        _clientLogEnabled = !!(body && body.enabled);
    });
};
var roonLog = function roonLog(level, message, data) {
    try { console.log('[roonLog/' + level + '] ' + message + (data !== undefined ? ' ' + JSON.stringify(data) : '')); } catch (e) {}
    if (!_clientLogEnabled) return;
    try {
        if (core != null && core.moo != null) {
            var req = { level: level, message: message };
            if (data !== undefined) req.data = data;
            core.moo.send_request('com.roonlabs.client_log:1/log', req);
        }
    } catch (e) {}
};

var reapTimeout = undefined;
var reapEventually = function reapEventually() {
    clearTimeout(reapTimeout);
    reapTimeout = setTimeout(function () {
        console.log('reaping dead elements');
        $(".dead, .deadish").remove();
    }, 10000);
};

//ratio to use for bitmap resource vs CSS pixel size.
var getPixelRatio = function getPixelRatio() {
    if (graphicsModes.REDUCED_RESOLUTION) return 1.0;

    return window.devicePixelRatio;
};

var boxReducer = function boxReducer(reduced, box) {
    var x = Math.min(reduced.x, box.x);
    var y = Math.min(reduced.y, box.y);
    return {
        x: x,
        y: y,
        width: Math.max(reduced.x + reduced.width, box.x + box.width) - x,
        height: Math.max(reduced.y + reduced.height, box.y + box.height) - y
    };
};

var swapBackFront = function swapBackFront(back, front) {
    var backCss = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
    var frontCss = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;

    if (backCss != null) back.css(backCss);
    if (frontCss != null) front.css(frontCss);
    back.addClass('front');
    front.addClass('back');
    back.removeClass('back');
    front.removeClass('front');
};

var imageIsHighRes = function imageIsHighRes(width, height) {
    var aspect_ratio = width / height;
    return aspect_ratio > 1.55 && width > 960 || aspect_ratio > 1.25 && width > 1080;
};

// 1.0 = completely dark, 0.0 = completely bright
// 0.85 is the opacity value used on the desktop client for the background dimming layer
var backgroundArtistImageDarknessConstant = 0.85;

var setBackgroundDimmingVisibility = function setBackgroundDimmingVisibility(show) {
    console.log('setBackgroundDimmingVisibility: ', show);
    var backgroundDimmingDiv = $('#background-dimming');
    if (show) {
        backgroundDimmingDiv.css({ 'opacity': "" + backgroundArtistImageDarknessConstant });
    } else {
        backgroundDimmingDiv.css({ 'opacity': '0' });
    }
};

// Padding of low rest artist image, expressed as percentages.
var lowResArtistPaddingPercent = {
    top: 0.15,
    right: 0.15,
    bottom: 0.20,
    left: 0.15
};

var crossfadeFeatureImage = function crossfadeFeatureImage(featureImage, jqContainer, isArtist = false) {
    var back = jqContainer.find(".back");
    var front = jqContainer.find(".front");

    if (featureImage == null) {
        swapBackFront(back, front, { 'background-image': '' });
        return;
    }
    
    var blobUrlPromise = featureImage.fetchBlobUrl();
    blobUrlPromise.then(function (blobUrl) {
        //console.log(`using blobUrl ${blobUrl} in crossfade`);

        var back = jqContainer.find(".back");
        var front = jqContainer.find('.front');

        var doSwap = !front.css('background-image').includes(blobUrl);
        
        var bgPosition = '';
        var preserveRect = null;
        var parentWidth = jqContainer.width();
        var parentHeight = jqContainer.height();

        var doFinally = async function doFinally() {
            var css = Object.assign({}, {
                'background-image': "url('" + blobUrl + "')"
            });
            
            if (doSwap) {
              if (isArtist) await blurArtistArt(featureImage);
              swapBackFront(back, front, css);
            }
            else front.css(css);
        };
        doFinally();
    }).catch(function (error) {
        console.log("blobUrlPromise error: " + error);
  });
};

var blurArtistArt = function blurArtistArt(featureImage) {
  var blurredArt = $("#background-artistart-blurred");
  if (currentArtistBlurredImages.length == 0 || !featureImage.successful) {
    var cssblur = Object.assign({}, {
      'background-image': "",
      'opacity': 0
    });
    blurredArt.css(cssblur);
    return;
  }
  var blobUrlPromise = currentArtistBlurredImage.fetchBlobUrl();
  blobUrlPromise.then(function (blobUrl) {
    console.log(blobUrl);
    var background = $("#background-artistart");
    var bgArtistArt = $("#background-artistart > div.front");
    var bgAspect = background.width() / background.height();
    var imgAspect = featureImage.options.aspect == "4by3" ? (4/3) : (16/7);
    var blur = false;
    if (isCast() && featureImage.options.aspect == "4by3") blur = true;
    else if (Math.abs(bgAspect-imgAspect) > 0.2) blur = true;
    if (blur) {
      //image is contained, and blurred image shown behind
      var css = Object.assign({}, {
        'background-size': "contain",
        'width': "calc(100% - 64px)",
        'height': "calc(77% - 64px)",
        'top': 32,
        'left': 32
      });
      var cssblur = Object.assign({}, {
        'background-image': "url('" + blobUrl + "')",
        'opacity': 1
      });
      blurredArt.css(cssblur);
    }
    else {
      //image is expanded to cover image area
      var css = Object.assign({}, {
        'background-size': "cover",
        'width': "100%",
        'height': "77%",
        'top': 0,
        'left': 0
      });
    }
  bgArtistArt.css(css);
  }).catch(function (error) {
    console.log("blobUrlPromise error: " + error);
  });
};

var currentAlbumArtKey = 'cleared';
var currentAlbumArtFeatureImage;
var currentAlbumArtBackgroundFeatureImage;
var setAlbumArt = function setAlbumArt(imageKey) {
    if (imageKey == currentAlbumArtKey) return false;

    if (currentAlbumArtFeatureImage != null) {
        currentAlbumArtFeatureImage.releaseResources();
        currentAlbumArtFeatureImage = null;
    }

    if (currentAlbumArtBackgroundFeatureImage != null) {
        currentAlbumArtBackgroundFeatureImage.releaseResources();
        currentAlbumArtBackgroundFeatureImage = null;
    }

    var albumArt = $("#albumart");
    var bgAlbumArt = $("#background-albumart");
    if (imageKey != null) {
        var pixelRatio = getPixelRatio();
        var width = Math.floor(albumArt.width() * pixelRatio);
        var height = Math.floor(albumArt.height() * pixelRatio);
        var bgWidth = Math.floor(bgAlbumArt.width() / 2); //this is going to get blurred; ask for a smaller image for speed
        var bgHeight = Math.floor(bgAlbumArt.height() / 2);

        var options = isCast() ? {
            format: 'image/png',
            scale: 'fit',
            width: width,
            height: height
        } : null;
        var bgOptions = {
            format: 'image/png',
            scale: 'fill',
            blur: 10,
            width: bgWidth,
            height: bgHeight
        };
        currentAlbumArtFeatureImage = new FeatureImage(imageKey, urlbase + "img/display_album_default.png", options);
        currentAlbumArtBackgroundFeatureImage = new FeatureImage(imageKey, urlbase + "img/display_bg_default.png", bgOptions);
    } else {
        currentAlbumArtFeatureImage = new FeatureImage(null, urlbase + "img/display_album_default.png");
        currentAlbumArtBackgroundFeatureImage = new FeatureImage(null, urlbase + "img/display_bg_default.png");
    }

    crossfadeFeatureImage(currentAlbumArtFeatureImage, albumArt);
    crossfadeFeatureImage(currentAlbumArtBackgroundFeatureImage, bgAlbumArt);
    setBackgroundDimmingVisibility(true);

    currentAlbumArtKey = imageKey;
    return true;
};

var clearAlbumArt = function clearAlbumArt() {
    if (currentAlbumArtFeatureImage != null) {
        currentAlbumArtFeatureImage.releaseResources();
        currentAlbumArtFeatureImage = null;
    }
    if (currentAlbumArtBackgroundFeatureImage != null) {
        currentAlbumArtBackgroundFeatureImage.releaseResources();
        currentAlbumArtBackgroundFeatureImage = null;
    }
    currentAlbumArtKey = 'cleared';

    var albumArt = $("#albumart");
    var bgAlbumArt = $("#background-albumart");
    crossfadeFeatureImage(null, albumArt);
    crossfadeFeatureImage(null, bgAlbumArt);
    setBackgroundDimmingVisibility(false);
};

var currentArtistFeatureImage;
var currentArtistFeatureImages = [];
var currentArtistImageAspect;
var currentArtistBlurredImage;
var currentArtistBlurredImages = [];
var setArtistArt = function setArtistArt(imageKeys) {
    if (imageKeys == null) imageKeys = [];

    var aspectChanged = false;
    var bgArtistArt = $("#background-artistart");
    var bgAspect = bgArtistArt.width() / bgArtistArt.height();
    var closestAspect = Math.abs(bgAspect - 1.333) < Math.abs(bgAspect - 2.286) ? "4by3" : "16by7";
    if (!isCast() && currentArtistFeatureImage != null && currentArtistFeatureImage.options.aspect != closestAspect) aspectChanged = true;

    if (currentArtistFeatureImages.length === imageKeys.length && currentArtistFeatureImages.every(function (featureImage, i) {
        return featureImage.imageKey === imageKeys[i];
    }) && !aspectChanged) {
      console.log('New artist image keys are identical to old ones. Letting previous slideshow continue');
      return false;
    }
    clearArtistArt();

    var options = null;
    var options_blur = null;
    
    if (isCast()) {       
        var constraint = Math.floor(Math.max(bgArtistArt.width(), bgArtistArt.height()) * getPixelRatio());
        options = {
            format: 'image/png',
            scale: 'fit',
            constrain_width: constraint,
            constrain_height: constraint,
            aspect: closestAspect
        };
        options_blur = {
          format: 'image/png',
          scale: 'fill',
          constrain_width: constraint,
          constrain_height: constraint,
          aspect: closestAspect,
          blur: 10
        };
    } else {
      options = {
        aspect: closestAspect
      };
      options_blur = {
        aspect: closestAspect,
        blur: 10
      };
    }

    currentArtistBlurredImages = imageKeys.map(function (imageKey) {
      var img = new FeatureImage(imageKey, null, options_blur);
      img = new FeatureImage(imageKey, null, options_blur);
      return img;
    });
    
    currentArtistFeatureImages = imageKeys.map(function (imageKey) {
      var img = new FeatureImage(imageKey, null, options);
      return img;
    });
    
    nextArtistArtIndex = 0;
    showNextArtistArt();

    return true;
};

var artistArtSlideshowInterval = 23000;
var nextArtistArtTimeout = undefined;
var nextArtistArtIndex = 0;
var showNextArtistArt = function showNextArtistArt() {
    clearTimeout(nextArtistArtTimeout);

    currentArtistBlurredImage = currentArtistBlurredImages[nextArtistArtIndex];
    currentArtistFeatureImage = currentArtistFeatureImages[nextArtistArtIndex++];
    
    var bgArtistArt = $("#background-artistart");
    if (currentArtistFeatureImage != null) currentArtistImageAspect = currentArtistFeatureImage.options.aspect;
    crossfadeFeatureImage(currentArtistFeatureImage, bgArtistArt, true);

    nextArtistArtIndex %= currentArtistFeatureImages.length;

    if (currentArtistFeatureImages.length > 1) nextArtistArtTimeout = setTimeout(showNextArtistArt, artistArtSlideshowInterval);
};

var refreshTimeout;
var refreshCurrentArtistArt = function refreshCurrentArtistArt() {
    console.log("refreshing art");
    if (!isCast()) {
      clearTimeout(refreshTimeout);
      var refresh = function refresh() {
      var bgArtistArt = $("#background-artistart");
      var bgAspect = bgArtistArt.width() / bgArtistArt.height();
      var closestAspect = Math.abs(bgAspect - 1.333) < Math.abs(bgAspect - 2.286) ? "4by3" : "16by7";
      if (closestAspect != currentArtistImageAspect) setArtistArt(artistImageKeys);
      blurArtistArt(currentArtistFeatureImage);
      };
      refreshTimeout = setTimeout(refresh, 150);
    }
    crossfadeFeatureImage(currentArtistFeatureImage, $("#background-artistart"), true);
};

var clearArtistArt = function clearArtistArt() {
    console.log('clearing artist art');
    clearTimeout(nextArtistArtTimeout);

    currentArtistFeatureImages.forEach(function (featureImage) {
        return featureImage.releaseResources();
    });
    currentArtistFeatureImages = [];

    currentArtistBlurredImages.forEach(function (featureImage) {
      return featureImage.releaseResources();
    });
    currentArtistBlurredImages = [];
    
    setTimeout(function () {
        if (currentArtistFeatureImages.length === 0) crossfadeFeatureImage(null, $("#background-artistart"), true);
    }, 100);
};

var secondsToTimeString = function secondsToTimeString(secs) {
    var seconds = secs % 60;
    var minutes = Math.floor(secs / 60.0) % 60;
    var hours = Math.floor(secs / 3600.0);

    var minsecString = minutes + (seconds > 9 ? ':' : ':0') + seconds;

    if (hours > 0) {
        return hours + (minutes > 9 ? ':' : ':0') + minsecString;
    } else {
        return minsecString;
    }
};

var updateWaveform = function updateWaveform() {
    var zed = getExtraDataForZone(zoneid);
    roonLog('info', 'updateWaveform', {
        waveform_is_null:  zed.waveform == null,
        waveform_truthy:   !!zed.waveform,
        waveform_is_array: Array.isArray(zed.waveform),
        waveform_length:   (zed.waveform && zed.waveform.length) || 0
    });
    if (zed.waveform) {
        roonLog('info', 'updateWaveform: drawing waveform');
        var bg = $("#waveformbg");
        var fg = $("#waveform");
        var bgElem = bg.get(0);
        var fgElem = fg.get(0);

        var bgWidth = bg.width();
        var bgHeight = bg.height();

        fg.width(bgWidth);

        var pixelRatio = getPixelRatio();
        var canvasWidth = Math.floor(bgWidth * pixelRatio);
        var canvasHeight = Math.floor(bgHeight * pixelRatio);
        if (canvasWidth != bgElem.width || canvasHeight != bgElem.height) {
            roonLog('info', 'updateWaveform: canvas elements are the wrong size, fixing', { canvasWidth: canvasWidth, canvasHeight: canvasHeight, bgElemWidth: bgElem.width, bgElemHeight: bgElem.height });
            bgElem.width = canvasWidth;
            bgElem.height = canvasHeight;
            fgElem.width = canvasWidth;
            fgElem.height = canvasHeight;
        } else {
            roonLog('info', 'updateWaveform: canvas elements already correct size', { canvasWidth: canvasWidth, canvasHeight: canvasHeight });
        }

        var bgCtx = bgElem.getContext('2d');
        var fgCtx = fgElem.getContext('2d');

        bgCtx.clearRect(0, 0, canvasWidth, canvasHeight);
        fgCtx.clearRect(0, 0, canvasWidth, canvasHeight);

        bgCtx.fillStyle = 'rgba(198, 199, 202, 0.4)';
        fgCtx.fillStyle = 'rgba(117, 116, 243, 1)';

        var waveformData = zed.waveform;
        var pxStep = Math.round(pixelRatio * 2);
        var barCount = 0;
        for (var i = 0; i < canvasWidth; i += pxStep) {
            var value = waveformData[Math.round(i / canvasWidth * waveformData.length)];
            var rectHeight = Math.max(value * canvasHeight, 1.0 * pixelRatio);
            var y = (canvasHeight - rectHeight) / 2;
            bgCtx.fillRect(i, y, pxStep / 2, rectHeight);
            fgCtx.fillRect(i, y, pxStep / 2, rectHeight);
            barCount++;
        }
        roonLog('info', 'updateWaveform: draw loop complete', { barCount: barCount, canvasWidth: canvasWidth, canvasHeight: canvasHeight, pxStep: pxStep, waveformLength: waveformData.length });
    } else {
        roonLog('info', 'updateWaveform: skipping (no waveform data)');
    }
};

var updateProgress = function updateProgress() {
    var zone = core.services.RoonApiTransport.zone_by_zone_id(zoneid);
    var ed = getExtraDataForZone(zoneid);
    var seekPos = ed.seek_position;
    var waveformData = ed.waveform;
    roonLog('info', 'updateProgress', {
        waveform_is_null:  waveformData == null,
        waveform_is_array: Array.isArray(waveformData),
        waveform_length:   (waveformData && waveformData.length) || 0,
        seekPos:           seekPos,
        has_zone:          zone != null,
        has_now_playing:   zone != null && zone.now_playing != null
    });

    var progressTime = $("#progresstime");
    var progressTimeString = seekPos != null ? secondsToTimeString(seekPos) : '';
    if (progressTime.text() !== progressTimeString) {
        roonLog('info', 'updateProgress: progress text changed', { from: progressTime.text(), to: progressTimeString });
        progressTime.text(progressTimeString);
    } else {
        roonLog('info', 'updateProgress: progress text unchanged');
    }

    var progress = 100;
    var length = zone != null && zone.now_playing != null ? zone.now_playing.length : null;
    if (length != null) {
        roonLog('info', 'updateProgress: have track length', { length: length, seekPos: seekPos });
        progress = seekPos != null ? 100 * seekPos / length : 0;
    } else {
        roonLog('info', 'updateProgress: no track length (default progress=100)');
    }

    var used = void 0;
    var usedContainer = void 0;
    var unusedContainer = void 0;
    if (waveformData != null) {
        roonLog('info', 'updateProgress: using waveform container');
        used = $("#waveformprogresscontainer");
        usedContainer = $("#waveformcontainer");
        unusedContainer = $("#progressbg");
    } else {
        roonLog('info', 'updateProgress: using progress bar container');
        used = $("#progressbar");
        usedContainer = $("#progressbg");
        unusedContainer = $("#waveformcontainer");
    }

    var progDiff = seekPos - parseFloat(used.get(0).style.width, 10) / 100 * length;
    if (progDiff > 0 && progDiff < 2) {
        roonLog('info', 'updateProgress: smooth transition', { progDiff: progDiff });
        used.css('transition', ''); //restore default CSS transition
    } else {
        roonLog('info', 'updateProgress: disable transition (big jump)', { progDiff: progDiff });
        used.css('transition', 'none'); //disable CSS transition on big jumps;
    }

    used.css('width', progress + "%");

    usedContainer.css('display', "block");
    unusedContainer.css('display', "none");

    usedContainer.css('opacity', 1);
    unusedContainer.css('opacity', 0);

    if (waveformData != null) {
        roonLog('info', 'updateProgress: calling updateWaveform');
        updateWaveform();
    } else {
        roonLog('info', 'updateProgress: skipping updateWaveform (no waveform)');
    }

    updateLyricsPosition();
};

var crossfadeText = function crossfadeText(text, jqContainer) {
    var back = jqContainer.find('.back');
    var front = jqContainer.find('.front');

    if (front.text() === text) return;

    if (text == null) text = '';
    back.text(text);
    swapBackFront(back, front);
};

var artUpdateInterval = isCast() ? 5000 : 0;
var artUpdateTimeout = undefined;
var lastArtUpdateTime = 0;
var hideParentTimeout = undefined;
var artistImageKeys;
var update_zones = function update_zones() {
    var zone = core.services.RoonApiTransport.zone_by_zone_id(zoneid);
    var zoneExtraData = getExtraDataForZone(zoneid);

    var title = "Roon";
    var displayState = null;
    var showParent = false;
    if (zone != null) {
        if (isCast() && (zone.state === 'playing' || zone.state === 'loading')) preventSleep();
        if (zone.now_playing != undefined) {
            showParent = true;
            var line1 = zone.now_playing.two_line.line1 != undefined ? zone.now_playing.two_line.line1 : line1;
            var line2 = zone.now_playing.two_line.line2 != undefined ? zone.now_playing.two_line.line2 : line2;
            if (zone.now_playing.one_line.line1 != undefined) {
                displayState = zone.now_playing.one_line.line1;
                title += ": " + displayState;
            }

            var seekPos = zone.now_playing.seek_position;
            var length = zone.now_playing.length;
            var albumArtKey = zone.now_playing.image_key;
            artistImageKeys = zone.now_playing.artist_image_keys;

            zoneExtraData.seek_position = seekPos;

            var totalTime = $("#totaltime");
            var totalTimeString = length != null ? secondsToTimeString(length) : '';
            if (totalTime.text() !== totalTimeString) totalTime.text(totalTimeString);

            crossfadeText(line1, $("#line1container"));
            crossfadeText(line2, $("#line2container"));

            updateProgress();

            var updateArt = function updateArt() {
                var artUpdated = setAlbumArt(albumArtKey);
                artUpdated = setArtistArt(artistImageKeys) || artUpdated;
                if (artUpdated) lastArtUpdateTime = Date.now();
                refreshCurrentArtistArt();
            };

            clearTimeout(artUpdateTimeout);
            var timeSince = Date.now() - lastArtUpdateTime;
            if (timeSince >= artUpdateInterval) {
                updateArt();
            } else {
                artUpdateTimeout = setTimeout(updateArt, artUpdateInterval - timeSince);
            }
        }
    }

    var splash = $("#splash");
    var uiParent = $("#uiParent");
    clearTimeout(hideParentTimeout);
    if (showParent) {
        uiParent.off('animationend');
        splash.css('opacity', 0);
        uiParent.css('opacity', 1);
    } else {
        var hideParent = function hideParent() {
            clearAlbumArt();
            clearArtistArt();
            clearTimeout(artUpdateTimeout);

            crossfadeText(null, $("#line1container"));
            crossfadeText(null, $("#line2container"));

            splash.css('opacity', 1);
            uiParent.css('opacity', 0);
        };
        //wait a little before hiding playback UI, otherwise this will look glitchy on zone transfer
        hideParentTimeout = setTimeout(hideParent, 500);
    }

    if (isCast()) {
        setDisplayState(displayState);
    } else {
        document.title = title;
    }
};

var initDisplayUI = function initDisplayUI() {
    //point CSS at broker resources, transition away splash
    var infoIconAttr = "url('" + urlbase + 'img/display_roon_icon.svg' + "')";
    $("#infoicon").css('background-image', infoIconAttr);

    var lyricsIconAttr = "url('" + urlbase + 'img/display_lyrics_icon.svg' + "')";
    $(".lyricsicon").css('background-image', lyricsIconAttr);

    $("#splashSpinner").css('opacity', 0);

    if (zoneid == null) {
        $("#helpIcon").css('visibility', 'visible');
    }
};

var setGraphicsModes = function setGraphicsModes(modes) {
    console.log("Setting graphics modes: " + JSON.stringify(modes));
    graphicsModes = modes;

    Object.keys(modes).forEach(function (key) {
        var value = modes[key];
        switch (key) {
            case 'REDUCED_ALPHA':
                if (value) $(".reducedAlphaAvailable").addClass('reducedAlpha');else $(".reducedAlphaAvailable").removeClass('reducedAlpha');
                break;
            case 'REDUCED_ANIMATION':
                if (value) $(".reducedAnimationAvailable").addClass('reducedAnimation');else $(".reducedAnimationAvailable").removedClass('reducedAlpha');
                break;
        }
    });
};

var updateLyrics = function updateLyrics() {
    var ed = getExtraDataForZone(zoneid);
    var lyrics = [];

    if (ed.lrc != null) {
        var lines = ed.lrc.split('\n');
        lines.forEach(function (line) {
            //console.log(line);
            var match = line.match(/\[(\d{2,}):(\d{2})\.(\d{2})\](.*)/);
            if (match != null) {
                var time = match[1] * 60 + match[2] * 1 + match[3] / 100;
                var text = match[4];
                lyrics.push({ time: time, text: text });
            }
        });

        if (lyrics.length > 0) {
            var firstLyric = lyrics[0];
            var lastLyric = lyrics[lyrics.length - 1];
            if (firstLyric.time < 3.0) {
                lyrics.unshift({ time: 0, text: '' });
            } else {
                lyrics.unshift({ time: firstLyric.time - 4.0, text: '', countdown: firstLyric.time }, { time: firstLyric.time, text: '' });
            }
            if (lastLyric.text === '') lastLyric.fadeout = true;
        }
    }

    ed.lyrics = lyrics;

    var oldLyrics = $(".lyricstext");
    oldLyrics.addClass("dead").removeAttr('id');
    reapEventually();

    var newLyrics = $('<p></p>').addClass('lyricstext').attr('id', 'currentLyrics');
    ed.lyrics.forEach(function (lyric) {
        var elem = $('<p></p>').appendTo(newLyrics);
        if (lyric.text != '') elem.text(lyric.text);else elem.html('&nbsp;');

        lyric.element = elem;
    });
    $("#lyricstextcontainer").append(newLyrics);
    updateLyricsOffsets();
};

var updateLyricsOffsets = function updateLyricsOffsets() {
    var ed = getExtraDataForZone(zoneid);
    var lyrics = ed.lyrics;
    if (lyrics != null) {
        var lyricscontainer = $("#lyricscontainer");
        var containerHeight = lyricscontainer[0].getBoundingClientRect().height;
        ed.lyricsContainerHeight = containerHeight;

        lyrics.forEach(function (lyric) {
            var element = lyric.element;
            var domElem = element[0];
            var bcr = domElem.getBoundingClientRect();
            lyric.offset = bcr.height / 2 + domElem.offsetTop + containerHeight / 2;

            //console.log(`calculated offset: ${JSON.stringify(lyric)}`);
        });
    }
};

//binary search for the "current" lyric for a given time
var findLyricForTime = function findLyricForTime(lyrics, time) {
    var minIndex = 0;
    var maxIndex = lyrics.length - 1;

    while (minIndex <= maxIndex) {
        var currentIndex = Math.floor((minIndex + maxIndex) / 2);
        var currentLyric = lyrics[currentIndex];

        if (currentLyric.time > time) {
            maxIndex = currentIndex - 1;
        } else {
            minIndex = currentIndex + 1;
        }
    }

    if (maxIndex >= 0) {
        var lyric = lyrics[maxIndex];
        if (maxIndex === 0 || lyric.text !== '') return lyric; //we don't want a lyric with blank text unless it's the first one
        while (--maxIndex >= 0) {
            lyric = lyrics[maxIndex];
            if (maxIndex === 0 || lyric.text !== '') return lyric;
        }
    }

    return null;
};

var updateLyricsPosition = function updateLyricsPosition() {
    var yOffset = 0;
    var ed = getExtraDataForZone(zoneid);
    if (ed.lrc != null && ed.lyrics == null) updateLyrics();

    var lyricsEnabled = displaysettings != null && displaysettings.enable_lyrics;
    var showLyrics = lyricsEnabled;
    var lyricscontainer = $("#lyricscontainer");
    var lyricsText = $("#currentLyrics");
    var lyricsChildren = lyricsText.children();
    var currentElem = null;
    if (ed.lyrics != null) {
        var seekPos = ed.seek_position;
        var currentLyric = findLyricForTime(ed.lyrics, seekPos + 0.7);

        if (currentLyric != null) {
            currentElem = currentLyric.element;
            lyricsChildren.removeClass("current prevnext");
            if (currentElem != null) {
                currentElem.addClass("current");
                currentElem.prev().addClass("prevnext");
                currentElem.next().addClass("prevnext");
            }

            yOffset = -currentLyric.offset;

            var countdown = $("#lyricscountdown");
            if (currentLyric.countdown != null) {
                var secondsLeft = Math.floor(currentLyric.countdown - (seekPos + 0.2));
                var indicators = countdown.children("span");
                indicators.removeClass("active");
                if (secondsLeft <= 3) indicators.eq(3 - secondsLeft).addClass("active");
                countdown.css('opacity', 1);
            } else {
                countdown.css('opacity', 0);
            }

            if (currentLyric.fadeout) showLyrics = false;
        }
    }

    showLyrics = showLyrics && yOffset != 0;
    lyricscontainer.css('opacity', showLyrics ? 1 : 0);

    var lyricsIcon = $("#lyricsicon");
    lyricsIcon.css('opacity', lyricsEnabled && ed.lyrics != null && !showLyrics ? 1 : 0);

    if (currentElem != null && !currentElem.hasClass("focused")) {
        lyricsChildren.removeClass("focused");
        currentElem.addClass("focused");

        var oldTransform = lyricsText[0].style.transform;
        var offsetMatch = oldTransform.match(/translate\(.*,\s*(.*)px\)/);
        var oldOffset = offsetMatch != null ? parseFloat(offsetMatch[1]) : 0;
        var offsetDiff = yOffset - oldOffset;

        //don't animate backwards transitions or large jumps forwards
        var transition = offsetDiff > 0 || offsetDiff < -(ed.lyricsContainerHeight / 2) ? 'none' : '';

        lyricsText.css({
            'transform': 'translate(0px, ' + yOffset + 'px)',
            'transition': transition
        });
    } else if (!showLyrics) {
        lyricsText.css({
            'transform': '',
            'transition': 'none'
        });
    }

    if (showLyrics && !ed.lyricsViewReported) {
        reportLrcView(ed.lrcKey);
        ed.lyricsViewReported = true;
    }
};

var activeDisplayZoneChanged = function activeDisplayZoneChanged() {
    clearExtraDataLyrics();
    update_zones();
    updateWaveform();
    updateProgress();
    refreshCurrentArtistArt();
};

var onResize = function onResize() {
    var lyricsText = $("#currentLyrics");
    lyricsText.css('transition', 'none');
    lyricsText.children().removeClass("focused"); //the lyrics position is now messed up due to resize

    updateLyricsOffsets();
    updateLyricsPosition();
    updateWaveform();
    updateProgress();
    refreshCurrentArtistArt();

    lyricsText.css('transition', '');
};

var mouseHideTimeout;
var onMouseMove = function onMouseMove() {
    clearTimeout(mouseHideTimeout);
    $("body").css('cursor', 'auto');
    mouseHideTimeout = setTimeout(function () {
        $("body").css('cursor', 'none');
    }, 5000);
};

if (typeof urlbase === 'undefined') window.urlbase = '';
if (isCast()) {
    initDisplayUI();
    uiMessageListener = function uiMessageListener(roonEvent) {
        switch (roonEvent.data.type) {
            case 'UPDATE_MOO_DATA':
                {
                    ip = roonEvent.data.ip;
                    port = roonEvent.data.port;
                    var token = roonEvent.data.api_token;
                    go(ip, port, token);
                }
                break;
            case 'SET_ACTIVE_DISPLAY_ZONE':
                {
                    //zoneid gets set earlier than this in cast.js so we shouldn't need to set it again here
                    activeDisplayZoneChanged();
                }
            case 'UPDATE_DISPLAY_SETTINGS':
                {
                    displaysettings = roonEvent.data.settings;
                    console.log('new displaysettings: ' + JSON.stringify(displaysettings));
                    updateLyricsPosition();

                    var response = { type: 'UPDATE_DISPLAY_SETTINGS', requestId: roonEvent.data.requestId, result: "SUCCESS" };
                    context.sendCustomMessage(ROON_CHANNEL, roonEvent.senderId, response);
                }
                break;
            case 'SET_GRAPHICS_MODES':
                {
                    setGraphicsModes(roonEvent.data.modes);

                    var _response = { type: 'SET_GRAPHICS_MODES', requestId: roonEvent.data.requestId, result: "SUCCESS" };
                    context.sendCustomMessage(ROON_CHANNEL, roonEvent.senderId, _response);
                }
                break;
        }
    };
    keepAliveRequested = function keepAliveRequested() {
        if (zoneid == null) return false;

        var zone = core.services.RoonApiTransport.zone_by_zone_id(zoneid);
        if (zone != null) {
            return zone.state === 'playing' || zone.state === 'loading';
        }
        return false;
    };
} else {
    window.addEventListener('mousemove', onMouseMove);
    $("#uiParent").load('display_ui.html', function (responseText, textStatus, jqXHR) {
        initDisplayUI();
        ip = location.hostname;
        port = location.port;
        go(ip, port);
    });
}

window.addEventListener('resize', onResize);

},{"./node-roon-api-displayzone.js":162,"detect-browser":163,"node-roon-api":168,"node-roon-api-image":165,"node-roon-api-transport":166,"uuid/v4":176}],162:[function(require,module,exports){
"use strict";

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var DisplayZone = function DisplayZone(display_key, auto_name, active_zone_id, subscription_cb, settings_cb) {
	_classCallCheck(this, DisplayZone);

	this.display_key = display_key;
	this.auto_name = auto_name;
	this.active_zone_id = active_zone_id;
	this.subscription_cb = subscription_cb;
	this.settings_cb = settings_cb;
};

var RoonApiDisplayZone = function () {
	function RoonApiDisplayZone(roon) {
		var _this = this;

		_classCallCheck(this, RoonApiDisplayZone);

		{
			this._displayZones = {};
			this._svc = roon.register_service("com.roonlabs.zonedisplay:1", {
				subscriptions: [{
					subscribe_name: "subscribe_displays",
					unsubscribe_name: "unsubscribe_displays",
					start: function start(req) {
						console.log('subscribe_displays request');
						req.send_continue("Subscribed", { displays: Object.values(_this._displayZones) });
					}
				}],
				methods: {
					get_displays: function get_displays(req) {
						console.log('get_displays request');
						req.send_complete("Success", { displays: Object.values(_this._displayZones) });
					},
					activate: function activate(req) {
						var key = req.body.display_key;
						var zoneId = req.body.zone_id;
						var zoneSettings = req.body.settings;
						console.log('activate request for display_key: ' + key + ' zone_id: ' + zoneId);
						if (key != null && key in _this._displayZones) {
							var zone = _this._displayZones[key];
							zone.active_zone_id = zoneId;
							zone.subscription_cb(zoneId, zoneSettings);
							req.send_complete("Success");
							_this._svc.send_continue_all('subscribe_displays', 'Changed', { displays_changed: [zone] });
						} else {
							req.send_complete("InvalidKey");
						}
					},
					deactivate: function deactivate(req) {
						var key = req.body.display_key;
						console.log('deactivate request for display_key: ' + key);
						if (key != null && key in _this._displayZones) {
							var zone = _this._displayZones[key];
							zone.active_zone_id = null;
							zone.subscription_cb(null);
							req.send_complete("Success");
							_this._svc.send_continue_all('subscribe_displays', 'Changed', { displays_changed: [zone] });
						} else {
							req.send_complete("InvalidKey");
						}
					},
					update_settings: function update_settings(req) {
						var key = req.body.display_key;
						var zoneSettings = req.body.settings;
						console.log('update_settings request for display_key: ' + key);
						if (key != null && key in _this._displayZones) {
							var zone = _this._displayZones[key];
							zone.settings_cb(zoneSettings);
							req.send_complete("Success");
						} else {
							req.send_complete("InvalidKey");
						}
					}
				}
			});

			this.services = [this._svc];
		}
	}

	_createClass(RoonApiDisplayZone, [{
		key: "addDisplayZone",
		value: function addDisplayZone(key, auto_name, active_zone_id, activate_cb, settings_cb) {
			var zone = new DisplayZone(key, auto_name, active_zone_id, activate_cb, settings_cb);
			this._displayZones[key] = zone;
			this._svc.send_continue_all('subscribe_displays', 'Changed', { displays_added: [zone] });
		}
	}]);

	return RoonApiDisplayZone;
}();

module.exports = RoonApiDisplayZone;

},{}],163:[function(require,module,exports){
(function (process){
function detect() {
  if (typeof navigator !== 'undefined') {
    return parseUserAgent(navigator.userAgent);
  }

  return getNodeVersion();
}

function detectOS(userAgentString) {
  var rules = getOperatingSystemRules();
  var detected = rules.filter(function (os) {
    return os.rule && os.rule.test(userAgentString);
  })[0];

  return detected ? detected.name : null;
}

function getNodeVersion() {
  var isNode = typeof process !== 'undefined' && process.version;
  return isNode && {
    name: 'node',
    version: process.version.slice(1),
    os: process.platform
  };
}

function parseUserAgent(userAgentString) {
  var browsers = getBrowserRules();
  if (!userAgentString) {
    return null;
  }

  var detected = browsers.map(function(browser) {
    var match = browser.rule.exec(userAgentString);
    var version = match && match[1].split(/[._]/).slice(0,3);

    if (version && version.length < 3) {
      version = version.concat(version.length == 1 ? [0, 0] : [0]);
    }

    return match && {
      name: browser.name,
      version: version.join('.')
    };
  }).filter(Boolean)[0] || null;

  if (detected) {
    detected.os = detectOS(userAgentString);
  }

  if (/alexa|bot|crawl(er|ing)|facebookexternalhit|feedburner|google web preview|nagios|postrank|pingdom|slurp|spider|yahoo!|yandex/i.test(userAgentString)) {
    detected = detected || {};
    detected.bot = true;
  }

  return detected;
}

function getBrowserRules() {
  return buildRules([
    [ 'aol', /AOLShield\/([0-9\._]+)/ ],
    [ 'edge', /Edge\/([0-9\._]+)/ ],
    [ 'yandexbrowser', /YaBrowser\/([0-9\._]+)/ ],
    [ 'vivaldi', /Vivaldi\/([0-9\.]+)/ ],
    [ 'kakaotalk', /KAKAOTALK\s([0-9\.]+)/ ],
    [ 'samsung', /SamsungBrowser\/([0-9\.]+)/ ],
    [ 'chrome', /(?!Chrom.*OPR)Chrom(?:e|ium)\/([0-9\.]+)(:?\s|$)/ ],
    [ 'phantomjs', /PhantomJS\/([0-9\.]+)(:?\s|$)/ ],
    [ 'crios', /CriOS\/([0-9\.]+)(:?\s|$)/ ],
    [ 'firefox', /Firefox\/([0-9\.]+)(?:\s|$)/ ],
    [ 'fxios', /FxiOS\/([0-9\.]+)/ ],
    [ 'opera', /Opera\/([0-9\.]+)(?:\s|$)/ ],
    [ 'opera', /OPR\/([0-9\.]+)(:?\s|$)$/ ],
    [ 'ie', /Trident\/7\.0.*rv\:([0-9\.]+).*\).*Gecko$/ ],
    [ 'ie', /MSIE\s([0-9\.]+);.*Trident\/[4-7].0/ ],
    [ 'ie', /MSIE\s(7\.0)/ ],
    [ 'bb10', /BB10;\sTouch.*Version\/([0-9\.]+)/ ],
    [ 'android', /Android\s([0-9\.]+)/ ],
    [ 'ios', /Version\/([0-9\._]+).*Mobile.*Safari.*/ ],
    [ 'safari', /Version\/([0-9\._]+).*Safari/ ],
    [ 'facebook', /FBAV\/([0-9\.]+)/],
    [ 'instagram', /Instagram\s([0-9\.]+)/],
    [ 'ios-webview', /AppleWebKit\/([0-9\.]+).*Mobile/]
  ]);
}

function getOperatingSystemRules() {
  return buildRules([
    [ 'iOS', /iP(hone|od|ad)/ ],
    [ 'Android OS', /Android/ ],
    [ 'BlackBerry OS', /BlackBerry|BB10/ ],
    [ 'Windows Mobile', /IEMobile/ ],
    [ 'Amazon OS', /Kindle/ ],
    [ 'Windows 3.11', /Win16/ ],
    [ 'Windows 95', /(Windows 95)|(Win95)|(Windows_95)/ ],
    [ 'Windows 98', /(Windows 98)|(Win98)/ ],
    [ 'Windows 2000', /(Windows NT 5.0)|(Windows 2000)/ ],
    [ 'Windows XP', /(Windows NT 5.1)|(Windows XP)/ ],
    [ 'Windows Server 2003', /(Windows NT 5.2)/ ],
    [ 'Windows Vista', /(Windows NT 6.0)/ ],
    [ 'Windows 7', /(Windows NT 6.1)/ ],
    [ 'Windows 8', /(Windows NT 6.2)/ ],
    [ 'Windows 8.1', /(Windows NT 6.3)/ ],
    [ 'Windows 10', /(Windows NT 10.0)/ ],
    [ 'Windows ME', /Windows ME/ ],
    [ 'Open BSD', /OpenBSD/ ],
    [ 'Sun OS', /SunOS/ ],
    [ 'Linux', /(Linux)|(X11)/ ],
    [ 'Mac OS', /(Mac_PowerPC)|(Macintosh)/ ],
    [ 'QNX', /QNX/ ],
    [ 'BeOS', /BeOS/ ],
    [ 'OS/2', /OS\/2/ ],
    [ 'Search Bot', /(nuhk)|(Googlebot)|(Yammybot)|(Openbot)|(Slurp)|(MSNBot)|(Ask Jeeves\/Teoma)|(ia_archiver)/ ]
  ]);
}

function buildRules(ruleTuples) {
  return ruleTuples.map(function(tuple) {
    return {
      name: tuple[0],
      rule: tuple[1]
    };
  });
}

module.exports = {
  detect: detect,
  detectOS: detectOS,
  getNodeVersion: getNodeVersion,
  parseUserAgent: parseUserAgent
};

}).call(this,require('_process'))
},{"_process":119}],164:[function(require,module,exports){
'use strict';

var ip = exports;
var Buffer = require('buffer').Buffer;
var os = require('os');

ip.toBuffer = function(ip, buff, offset) {
  offset = ~~offset;

  var result;

  if (this.isV4Format(ip)) {
    result = buff || new Buffer(offset + 4);
    ip.split(/\./g).map(function(byte) {
      result[offset++] = parseInt(byte, 10) & 0xff;
    });
  } else if (this.isV6Format(ip)) {
    var sections = ip.split(':', 8);

    var i;
    for (i = 0; i < sections.length; i++) {
      var isv4 = this.isV4Format(sections[i]);
      var v4Buffer;

      if (isv4) {
        v4Buffer = this.toBuffer(sections[i]);
        sections[i] = v4Buffer.slice(0, 2).toString('hex');
      }

      if (v4Buffer && ++i < 8) {
        sections.splice(i, 0, v4Buffer.slice(2, 4).toString('hex'));
      }
    }

    if (sections[0] === '') {
      while (sections.length < 8) sections.unshift('0');
    } else if (sections[sections.length - 1] === '') {
      while (sections.length < 8) sections.push('0');
    } else if (sections.length < 8) {
      for (i = 0; i < sections.length && sections[i] !== ''; i++);
      var argv = [ i, 1 ];
      for (i = 9 - sections.length; i > 0; i--) {
        argv.push('0');
      }
      sections.splice.apply(sections, argv);
    }

    result = buff || new Buffer(offset + 16);
    for (i = 0; i < sections.length; i++) {
      var word = parseInt(sections[i], 16);
      result[offset++] = (word >> 8) & 0xff;
      result[offset++] = word & 0xff;
    }
  }

  if (!result) {
    throw Error('Invalid ip address: ' + ip);
  }

  return result;
};

ip.toString = function(buff, offset, length) {
  offset = ~~offset;
  length = length || (buff.length - offset);

  var result = [];
  if (length === 4) {
    // IPv4
    for (var i = 0; i < length; i++) {
      result.push(buff[offset + i]);
    }
    result = result.join('.');
  } else if (length === 16) {
    // IPv6
    for (var i = 0; i < length; i += 2) {
      result.push(buff.readUInt16BE(offset + i).toString(16));
    }
    result = result.join(':');
    result = result.replace(/(^|:)0(:0)*:0(:|$)/, '$1::$3');
    result = result.replace(/:{3,4}/, '::');
  }

  return result;
};

var ipv4Regex = /^(\d{1,3}\.){3,3}\d{1,3}$/;
var ipv6Regex =
    /^(::)?(((\d{1,3}\.){3}(\d{1,3}){1})?([0-9a-f]){0,4}:{0,2}){1,8}(::)?$/i;

ip.isV4Format = function(ip) {
  return ipv4Regex.test(ip);
};

ip.isV6Format = function(ip) {
  return ipv6Regex.test(ip);
};
function _normalizeFamily(family) {
  return family ? family.toLowerCase() : 'ipv4';
}

ip.fromPrefixLen = function(prefixlen, family) {
  if (prefixlen > 32) {
    family = 'ipv6';
  } else {
    family = _normalizeFamily(family);
  }

  var len = 4;
  if (family === 'ipv6') {
    len = 16;
  }
  var buff = new Buffer(len);

  for (var i = 0, n = buff.length; i < n; ++i) {
    var bits = 8;
    if (prefixlen < 8) {
      bits = prefixlen;
    }
    prefixlen -= bits;

    buff[i] = ~(0xff >> bits) & 0xff;
  }

  return ip.toString(buff);
};

ip.mask = function(addr, mask) {
  addr = ip.toBuffer(addr);
  mask = ip.toBuffer(mask);

  var result = new Buffer(Math.max(addr.length, mask.length));

  var i = 0;
  // Same protocol - do bitwise and
  if (addr.length === mask.length) {
    for (i = 0; i < addr.length; i++) {
      result[i] = addr[i] & mask[i];
    }
  } else if (mask.length === 4) {
    // IPv6 address and IPv4 mask
    // (Mask low bits)
    for (i = 0; i < mask.length; i++) {
      result[i] = addr[addr.length - 4  + i] & mask[i];
    }
  } else {
    // IPv6 mask and IPv4 addr
    for (var i = 0; i < result.length - 6; i++) {
      result[i] = 0;
    }

    // ::ffff:ipv4
    result[10] = 0xff;
    result[11] = 0xff;
    for (i = 0; i < addr.length; i++) {
      result[i + 12] = addr[i] & mask[i + 12];
    }
    i = i + 12;
  }
  for (; i < result.length; i++)
    result[i] = 0;

  return ip.toString(result);
};

ip.cidr = function(cidrString) {
  var cidrParts = cidrString.split('/');

  var addr = cidrParts[0];
  if (cidrParts.length !== 2)
    throw new Error('invalid CIDR subnet: ' + addr);

  var mask = ip.fromPrefixLen(parseInt(cidrParts[1], 10));

  return ip.mask(addr, mask);
};

ip.subnet = function(addr, mask) {
  var networkAddress = ip.toLong(ip.mask(addr, mask));

  // Calculate the mask's length.
  var maskBuffer = ip.toBuffer(mask);
  var maskLength = 0;

  for (var i = 0; i < maskBuffer.length; i++) {
    if (maskBuffer[i] === 0xff) {
      maskLength += 8;
    } else {
      var octet = maskBuffer[i] & 0xff;
      while (octet) {
        octet = (octet << 1) & 0xff;
        maskLength++;
      }
    }
  }

  var numberOfAddresses = Math.pow(2, 32 - maskLength);

  return {
    networkAddress: ip.fromLong(networkAddress),
    firstAddress: numberOfAddresses <= 2 ?
                    ip.fromLong(networkAddress) :
                    ip.fromLong(networkAddress + 1),
    lastAddress: numberOfAddresses <= 2 ?
                    ip.fromLong(networkAddress + numberOfAddresses - 1) :
                    ip.fromLong(networkAddress + numberOfAddresses - 2),
    broadcastAddress: ip.fromLong(networkAddress + numberOfAddresses - 1),
    subnetMask: mask,
    subnetMaskLength: maskLength,
    numHosts: numberOfAddresses <= 2 ?
                numberOfAddresses : numberOfAddresses - 2,
    length: numberOfAddresses,
    contains: function(other) {
      return networkAddress === ip.toLong(ip.mask(other, mask));
    }
  };
};

ip.cidrSubnet = function(cidrString) {
  var cidrParts = cidrString.split('/');

  var addr = cidrParts[0];
  if (cidrParts.length !== 2)
    throw new Error('invalid CIDR subnet: ' + addr);

  var mask = ip.fromPrefixLen(parseInt(cidrParts[1], 10));

  return ip.subnet(addr, mask);
};

ip.not = function(addr) {
  var buff = ip.toBuffer(addr);
  for (var i = 0; i < buff.length; i++) {
    buff[i] = 0xff ^ buff[i];
  }
  return ip.toString(buff);
};

ip.or = function(a, b) {
  a = ip.toBuffer(a);
  b = ip.toBuffer(b);

  // same protocol
  if (a.length === b.length) {
    for (var i = 0; i < a.length; ++i) {
      a[i] |= b[i];
    }
    return ip.toString(a);

  // mixed protocols
  } else {
    var buff = a;
    var other = b;
    if (b.length > a.length) {
      buff = b;
      other = a;
    }

    var offset = buff.length - other.length;
    for (var i = offset; i < buff.length; ++i) {
      buff[i] |= other[i - offset];
    }

    return ip.toString(buff);
  }
};

ip.isEqual = function(a, b) {
  a = ip.toBuffer(a);
  b = ip.toBuffer(b);

  // Same protocol
  if (a.length === b.length) {
    for (var i = 0; i < a.length; i++) {
      if (a[i] !== b[i]) return false;
    }
    return true;
  }

  // Swap
  if (b.length === 4) {
    var t = b;
    b = a;
    a = t;
  }

  // a - IPv4, b - IPv6
  for (var i = 0; i < 10; i++) {
    if (b[i] !== 0) return false;
  }

  var word = b.readUInt16BE(10);
  if (word !== 0 && word !== 0xffff) return false;

  for (var i = 0; i < 4; i++) {
    if (a[i] !== b[i + 12]) return false;
  }

  return true;
};

ip.isPrivate = function(addr) {
  return /^(::f{4}:)?10\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i
      .test(addr) ||
    /^(::f{4}:)?192\.168\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
    /^(::f{4}:)?172\.(1[6-9]|2\d|30|31)\.([0-9]{1,3})\.([0-9]{1,3})$/i
      .test(addr) ||
    /^(::f{4}:)?127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
    /^(::f{4}:)?169\.254\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
    /^f[cd][0-9a-f]{2}:/i.test(addr) ||
    /^fe80:/i.test(addr) ||
    /^::1$/.test(addr) ||
    /^::$/.test(addr);
};

ip.isPublic = function(addr) {
  return !ip.isPrivate(addr);
};

ip.isLoopback = function(addr) {
  return /^(::f{4}:)?127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/
      .test(addr) ||
    /^fe80::1$/.test(addr) ||
    /^::1$/.test(addr) ||
    /^::$/.test(addr);
};

ip.loopback = function(family) {
  //
  // Default to `ipv4`
  //
  family = _normalizeFamily(family);

  if (family !== 'ipv4' && family !== 'ipv6') {
    throw new Error('family must be ipv4 or ipv6');
  }

  return family === 'ipv4' ? '127.0.0.1' : 'fe80::1';
};

//
// ### function address (name, family)
// #### @name {string|'public'|'private'} **Optional** Name or security
//      of the network interface.
// #### @family {ipv4|ipv6} **Optional** IP family of the address (defaults
//      to ipv4).
//
// Returns the address for the network interface on the current system with
// the specified `name`:
//   * String: First `family` address of the interface.
//             If not found see `undefined`.
//   * 'public': the first public ip address of family.
//   * 'private': the first private ip address of family.
//   * undefined: First address with `ipv4` or loopback address `127.0.0.1`.
//
ip.address = function(name, family) {
  var interfaces = os.networkInterfaces();
  var all;

  //
  // Default to `ipv4`
  //
  family = _normalizeFamily(family);

  //
  // If a specific network interface has been named,
  // return the address.
  //
  if (name && name !== 'private' && name !== 'public') {
    var res = interfaces[name].filter(function(details) {
      var itemFamily = details.family.toLowerCase();
      return itemFamily === family;
    });
    if (res.length === 0)
      return undefined;
    return res[0].address;
  }

  var all = Object.keys(interfaces).map(function (nic) {
    //
    // Note: name will only be `public` or `private`
    // when this is called.
    //
    var addresses = interfaces[nic].filter(function (details) {
      details.family = details.family.toLowerCase();
      if (details.family !== family || ip.isLoopback(details.address)) {
        return false;
      } else if (!name) {
        return true;
      }

      return name === 'public' ? ip.isPrivate(details.address) :
          ip.isPublic(details.address);
    });

    return addresses.length ? addresses[0].address : undefined;
  }).filter(Boolean);

  return !all.length ? ip.loopback(family) : all[0];
};

ip.toLong = function(ip) {
  var ipl = 0;
  ip.split('.').forEach(function(octet) {
    ipl <<= 8;
    ipl += parseInt(octet);
  });
  return(ipl >>> 0);
};

ip.fromLong = function(ipl) {
  return ((ipl >>> 24) + '.' +
      (ipl >> 16 & 255) + '.' +
      (ipl >> 8 & 255) + '.' +
      (ipl & 255) );
};

},{"buffer":48,"os":107}],165:[function(require,module,exports){
"use strict";

let SVCNAME = "com.roonlabs.image:1";

/**
 * Roon API Image Service
 * @class RoonApiImage
 * @param {Core} core - The Core providing the service
 */
function RoonApiImage(core) {
    this.core = core;
}

RoonApiImage.services = [ { name: SVCNAME } ];

/**
 * @callback RoonApiImage~imageresultcallback
 * @param {string | false} error - an error code or false if no error
 * @param {string} content_type - the MIME type of the image data
 * @param {Buffer} image - the image data
 */

/**
 * <p style='white-space: pre-wrap;'>
 * Roon API services provide image_key properties. This translates the image_key into an actual image.
 *
 * It is also possible to issue image requests directly using HTTP if that is more convenient:
 *
 * <tt>http://IP:PORT/api/image/image_key?scale=XXX&width=XXX&height=XXX&format=XXX</tt>
 *
 * The rules for parameter types and optional/required follow the same as for the options parameter.
 * </p>
 *
 * @param {string} image_key - the key, as given by another api
 * @param {object} [options]
 * @param {('fit'|'fill'|'stretch')} [options.scale] - If this is not set, the image will be returned at original size. Warning: that could be very large!
 * @param {number} [options.width] - The image width to be returned. Required if the scale property is set
 * @param {number} [options.height] - The image height to be returned. Required if the scale property is set
 * @param {('image/jpeg'|'image/png')} [options.format] - If you don't specify, Roon will choose for you.
 * @param {'4by3' | '16by7'} [options.aspect] - The desired aspect ratio of the image to be returned. 
 * @param {RoonApiImage~imageresultcallback} cb - Called on success or error
 */
RoonApiImage.prototype.get_image = function() {
    var i = 0;
    let image_key = arguments[i++];
    let opts = {};
    if (typeof(arguments[i]) != "function") opts = arguments[i++];
    let cb  = arguments[i++];
    opts = Object.assign({ image_key: image_key }, opts);
    this.core.moo.send_request(SVCNAME+"/get_image",
                               opts,
                               (msg, body) => {
                                   if (msg && msg.name == "Success") cb(false, msg.content_type, body);
                                   else cb(msg ? msg.name : "NetworkError");
                               });
};

RoonApiImage.prototype.get_image_features = function() {
    var i = 0;
    let image_key = arguments[i++];
    let opts = {};
    if (typeof(arguments[i]) != "function") opts = arguments[i++];
    let cb  = arguments[i++];
    opts = Object.assign({ image_key: image_key }, opts);
    this.core.moo.send_request(SVCNAME+"/get_image_features",
                               opts,
                               (msg, body) => {
                                   if (msg && msg.name == "Success") cb(false, msg.content_type, body);
                                   else cb(msg ? msg.name : "NetworkError");
                               });
}

exports = module.exports = RoonApiImage;

},{}],166:[function(require,module,exports){
"use strict";

let SVCNAME = "com.roonlabs.transport:2";

function oid(o) {
    if (typeof(o) == 'string') return o;
    return o.output_id;
}
function zoid(zo) {
    if (typeof(zo) == 'string') return zo;
    if (zo.output_id) return zo.output_id;
    return zo.zone_id;
}

/**
 * Roon API Transport Service: Zone
 * @class Zone
 * @property {string}  zone_id
 * @property {string}  display_name - Display Name for this zone
 * @property {Output[]}  ouputs - The outputs in this zone
 * @property {('playing'|'paused'|'loading'|'stopped')} state
 * @property {number} [seek_position] - Current seek position for the zone
 * @property {boolean} is_previous_allowed - Indicates whether the "previous" control is supported
 * @property {boolean} is_next_allowed - Indicates whether the "next" control is supported
 * @property {boolean} is_pause_allowed - Indicates whether the "pause" control is supported
 * @property {boolean} is_play_allowed - Indicates whether the "play" control is supported
 * @property {boolean} is_seek_allowed - Indicates whether the "seek" control is supported
 * @property {number} [queue_items_remaining] - Number of items in the play queue for this zone
 * @property {number} [queue_time_remaining] - Number of seconds remaining in the play queue for this zone
 * @property {object}  [settings]               - The default values for parties.
 * @property {('loop'|'loop_one'|'disabled')} settings.loop - loop setting on the zone
 * @property {boolean}  settings.shuffle - indicates whether shuffle is enabled on the zone
 * @property {boolean}  settings.auto_radio - indicates whether auto-radio mode is enabled on the zone
 * @property {object}  [now_playing] - Now-playing information for this zone, if playback is active
 * @property {number}  [now_playing.seek_position] - Seek Position in seconds, if applicable
 * @property {number}  [now_playing.length] - Length of media in seconds, if applicable
 * @property {string}  [now_playing.image_key] - Now-playing image
 * @property {object}  now_playing.one_line - Display text for one-line displays
 * @property {string}  now_playing.one_line.line1
 * @property {object}  now_playing.two_line - Display text for two-line displays
 * @property {string}  now_playing.two_line.line1
 * @property {string}  [now_playing.two_line.line2]
 * @property {object}  now_playing.three_line - Display text for three-line displays
 * @property {string}  now_playing.three_line.line1
 * @property {string}  [now_playing.three_line.line2]
 * @property {string}  [now_playing.three_line.line3]

 */

/**
 * Roon API Transport Service: Output
 * @class Output
 * @property {string}  output_id
 * @property {string}  zone_id - The zone that this output is a part of
 * @property {string}  display_name - Display Name for this output
 * @property {('playing'|'paused'|'loading'|'stopped')} state
 * @property {object}  [source_controls]               - The default values for parties.
 * @property {string}  source_controls.display_name - Display Name for this source control
 * @property {('selected'|'deselected'|'standby'|'indeterminate')} source_controls.status
 * @property {boolean}  source_controls.supports_standby - true if this source control supports standby
 *
 * @property {object}  [volume] - This field is populated for outputs that support volume control.<p style='white-space: pre-wrap;'>
 * Note that volume values, bounds, and step are floating point values, not integers, and that volume ranges can extend below and above zero, sometimes at the same time.
 *
 * Examples:
 *
 * This list of examples is not meant to be exhaustive--it just serves to create a sense of the range of options out there.
 * <pre>
 *     { "type": "db",    "min": -80, "max": 0,   "value": -50.5, "step": 0.5 }
 *     { "type": "db",    "min": -80, "max": 10,  "value": 4,     "step": 1.0 }
 *     { "type": "number" "min": 0,   "max": 100, "value": 80,    "step": 1.0 }
 *     { "type": "number" "min": 1,   "max": 99,  "value": 65,    "step": 1.0 }
 *     { "type": "incremental" }
 * </pre>
 * </pre>
 * @property {('number'|'db'|'incremental'|*)}  [volume.type] - If you receive an unanticipated value for this, treat it like "number".  The "incremental" type represents a volume control that just has "+" and "-" buttons, with no feedback about the current volume value or its range. It might be used in conjunction with an IR blaster, for example. In this case, all of the remaining properties (min,max,step,value,is_muted,limits) will be absent. With an "incremental" control, you should display two buttons, and when issuing change_volume requests, use "relative" mode and only send adjustments of +1/-1.
 * @property {number}  [volume.min] - The minimum value in the volume range
 * @property {number}  [volume.max] - The maximum value in the volume range
 * @property {number}  [volume.value] - The current value of the volume control
 * @property {number}  [volume.step] - The step size for the volume control, in terms of its native units
 * @property {boolean}  [volume.is_muted] - True if the zone is muted, false otherwise
 */

/**
 * Roon API Transport Service
 * @class RoonApiTransport
 * @param {Core} core - The Core providing the service
 */
function RoonApiTransport(core) {
    this.core = core;
    this._queues = { };
}

RoonApiTransport.services = [ { name: SVCNAME } ];

/**
 * Mute/unmute all zones (that are mutable).
 * @param {('mute'|'unmute')} how - The action to take
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.mute_all = function(how, cb) {
    this.core.moo.send_request(SVCNAME+"/mute_all",
                               {
                                   how:       how
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Pause all zones.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.pause_all = function(cb) {
    this.core.moo.send_request(SVCNAME+"/pause_all",
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Standby an output.
 *
 * @param {Output} output - The output to put into standby
 * @param {object} opts - Options. If none, specify empty object ({}).
 * @param {string} [opts.control_key] - The <tt>control_key</tt> that identifies the <tt>source_control</tt> that is to be put into standby. If omitted, then all source controls on this output that support standby will be put into standby.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.standby = function(o, opts, cb) {
    if (!o) { if (cb) cb(false); return; }
    opts = Object.assign({ output_id: oid(o) }, opts);
    this.core.moo.send_request(SVCNAME+"/standby", opts,
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Toggle the standby state of an output.
 *
 * @param {Output} output - The output that should have its standby state toggled.
 * @param {object} opts - Options. If none, specify empty object ({}).
 * @param {string} [opts.control_key] - The <tt>control_key</tt> that identifies the <tt>source_control</tt> that is to have its standby state toggled.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.toggle_standby = function(o, opts, cb) {
    if (!o) { if (cb) cb(false); return; }
    opts = Object.assign({ output_id: oid(o) }, opts);
    this.core.moo.send_request(SVCNAME+"/toggle_standby", opts,
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Cconvenience switch an output, taking it out of standby if needed.
 *
 * @param {Output} output - The output that should be convenience-switched.
 * @param {object} opts - Options. If none, specify empty object ({}).
 * @param {string} [opts.control_key] - The <tt>control_key</tt> that identifies the <tt>source_control</tt> that is to be switched. If omitted, then all controls on this output will be convenience switched.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.convenience_switch = function(o, opts, cb) {
    if (!o) { if (cb) cb(false); return; }
    opts = Object.assign({ output_id: oid(o) }, opts);
    this.core.moo.send_request(SVCNAME+"/convenience_switch", opts,
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Mute/unmute an output.
 * @param {Output} output - The output to mute.
 * @param {('mute'|'unmute')} how - The action to take
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.mute = function(output, how, cb) {
    if (!output) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/mute",
                               {
                                   output_id: oid(output),
                                   how:       how
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Change the volume of an output. Grouped zones can have differently behaving
 * volume systems (dB, min/max, steps, etc..), so you have to change the volume
 * different for each of those outputs.
 *
 * @param {Output} output - The output to change the volume on.
 * @param {('absolute'|'relative'|'relative_step')} how - How to interpret the volume
 * @param {number} value - The new volume value, or the increment value or step
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.change_volume = function(output, how, value, cb) {
    if (!output) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/change_volume",
                               {
                                   output_id: oid(output),
                                   how:       how,
                                   value:     value
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Seek to a time position within the now playing media
 * @param {Zone|Output} zone - The zone or output
 * @param {('relative'|'absolute')} how - How to interpret the target seek position
 * @param {number} seconds - The target seek position
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.seek = function(z, how, seconds, cb) {
    if (!z) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/seek",
                               {
                                   zone_or_output_id: zoid(z),
                                   how:             how,
                                   seconds:         seconds
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Execute a transport control on a zone.
 *
 * <p>Be sure that `is_<control>_allowed` is true on your {Zone} before allowing the user to operate controls</p>
 *
 * @param {Zone|Output} zone - The zone or output
 * @param {('play'|'pause'|'playpause'|'stop'|'previous'|'next')} control - The control desired
 * <pre>
 * "play" - If paused or stopped, start playback
 * "pause" - If playing or loading, pause playback
 * "playpause" - If paused or stopped, start playback. If playing or loading, pause playback.
 * "stop" - Stop playback and release the audio device immediately
 * "previous" - Go to the start of the current track, or to the previous track
 * "next" - Advance to the next track
 * </pre>
 *
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.control = function(z, control, cb) {
    if (!z) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/control",
                               {
                                   zone_or_output_id: zoid(z),
                                   control:           control
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Transfer the current queue from one zone to another
 *
 * @param {Zone|Output} fromzone - The source zone or output
 * @param {Zone|Output} tozone - The destination zone or output
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.transfer_zone = function(fromz, toz, cb) {
    if (!fromz || !toz) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/transfer_zone",
                               {
                                   from_zone_or_output_id: zoid(fromz),
                                   to_zone_or_output_id:   zoid(toz),
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Create a group of synchronized audio outputs
 *
 * @param {Output[]} outputs - The outputs to group. The first output's zone's queue is preserved.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.group_outputs = function(outputs, cb) {
    if (!outputs) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/group_outputs",
                               {
                                   output_ids: outputs.reduce((p,e) => p.push(oid(e)) && p, []),
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Ungroup outputs previous grouped
 *
 * @param {Output[]} outputs - The outputs to ungroup.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.ungroup_outputs = function(outputs, cb) {
    if (!outputs) { if (cb) cb(false); return; }
    this.core.moo.send_request(SVCNAME+"/ungroup_outputs",
                               {
                                   output_ids: outputs.reduce((p,e) => p.push(oid(e)) && p, []),
                               },
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};
/**
 * Change zone settings
 *
 * @param {Zone|Output} zone - The zone or output
 * @param {object} settings - The settings to change
 * @param {boolean} [settings.shuffle] - If present, sets shuffle mode to the specified value
 * @param {boolean} [settings.auto_radio] - If present, sets auto_radio mode to the specified value
 * @param {('loop'|'loop_one'|'disabled'|'next')} [settings.loop] - If present, sets loop mode to the specified value. 'next' will cycle between the settings.
 * @param {RoonApiTransport~resultcallback} [cb] - Called on success or error
 */
RoonApiTransport.prototype.change_settings = function(z, settings, cb) {
    if (!z) { if (cb) cb(false); return; }
    settings = Object.assign({ zone_or_output_id: zoid(z) }, settings);
    this.core.moo.send_request(SVCNAME+"/change_settings",
                               settings,
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"));
                               });
};

RoonApiTransport.prototype.get_zones = function(cb) {
    this.core.moo.send_request(SVCNAME+"/get_zones",
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"), body);
                               });
};
RoonApiTransport.prototype.get_outputs = function(cb) {
    this.core.moo.send_request(SVCNAME+"/get_outputs",
                               (msg, body) => {
                                   if (cb)
                                       cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"), body);
                               });
};

RoonApiTransport.prototype.subscribe_outputs  = function(cb) { this.core.moo._subscribe_helper(SVCNAME, "outputs", cb); }
RoonApiTransport.prototype.subscribe_zones    = function(cb) {
    this.core.moo._subscribe_helper(SVCNAME, "zones",
                                    (response, msg) => {
                                        if (response == "Subscribed") {
                                            this._zones = msg.zones.reduce((p,e) => (p[e.zone_id] = e) && p, {});

                                        } else if (response == "Changed") {
                                            if (msg.zones_removed)      msg.zones_removed.forEach(e => delete(this._zones[e.zone_id]));
                                            if (msg.zones_added)        msg.zones_added  .forEach(e => this._zones[e.zone_id] = e);
                                            if (msg.zones_changed)      msg.zones_changed.forEach(e => this._zones[e.zone_id] = e);
                                            
                                            if (msg.zones_seek_changed) msg.zones_seek_changed.forEach(e => {
                                                let zone = this._zones[e.zone_id];
                                                if (zone == undefined) return;
                                                if (zone.now_playing != undefined) zone.now_playing.seek_position = e.seek_position
                                                zone.queue_time_remaining = e.queue_time_remaining;
                                            });
                                            
                                        } else if (response == "Unsubscribed") {
                                            delete(this._zones);
                                        }
                                        cb(response, msg);
                                    });
}

RoonApiTransport.prototype.subscribe_queue = function(zone_or_output, max_item_count, cb) {
    var zone_or_output_id = zoid(zone_or_output);
    return this.core.moo._subscribe_helper(SVCNAME, "queue",
                                           {
                                               zone_or_output_id: zone_or_output_id,
                                               max_item_count: max_item_count
                                           },
                                           (response, msg) => {
                                               cb(response, msg);
                                           });
}

RoonApiTransport.prototype.play_from_here = function(zone_or_output, queue_item_id, cb) {
    var zone_or_output_id = zoid(zone_or_output);
    var req_args = {
        zone_or_output_id: zone_or_output_id,
        queue_item_id: queue_item_id
    };
    this.core.moo.send_request(SVCNAME+"/play_from_here",
                               req_args,
                               (msg, body) => {
                                   if (cb)
                                       cb(msg, body);
                                   
                               });
}

RoonApiTransport.prototype.zone_by_zone_id = function(zone_id) {
    if (!this._zones) return null;
    for (var x in this._zones) if (x == zone_id) return this._zones[x];
    return null;
}
RoonApiTransport.prototype.zone_by_output_id = function(output_id) {
    if (!this._zones) return null;
    for (var x in this._zones) for (var y in this._zones[x].outputs) if (this._zones[x].outputs[y].output_id == output_id) return this._zones[x];
    return null;
}
RoonApiTransport.prototype.zone_by_object = function(zone_or_output) {
    if (zone_or_output.zone_id)   return this.zone_by_zone_id  (zone_or_output.zone_id);
    if (zone_or_output.output_id) return this.zone_by_output_id(zone_or_output.output_id);
    return null;
}

exports = module.exports = RoonApiTransport;

},{}],167:[function(require,module,exports){
"use strict";

function Core(moo, roon, registration) {
    this.moo = moo;
    this.core_id = registration.core_id;
    this.display_name = registration.display_name;
    this.display_version = registration.display_version;
    this.services = {};

    var svcs = {};
    roon.services_opts.required_services.forEach(svcobj => svcobj.services.forEach(svc => svcs[svc.name] = svcobj));
    roon.services_opts.optional_services.forEach(svcobj => svcobj.services.forEach(svc => svcs[svc.name] = svcobj));
    registration.provided_services.forEach(e => { this.services[svcs[e].name] = new svcs[e](this); });
};

exports = module.exports = Core;

},{}],168:[function(require,module,exports){
"use strict";

/**
Roon API.                                   
 * @class RoonApi
 * @param {object} desc - Information about your extension. Used by Roon to display to the end user what is trying to access Roon.
 * @param {string} desc.extension_id - A unique ID for this extension. Something like @com.your_company_or_name.name_of_extension@.
 * @param {string} desc.display_name - The name of your extension.
 * @param {string} desc.display_version - A version string that is displayed to the user for this extension. Can be anything you want.
 * @param {string} desc.publisher - The name of the developer of the extension.
 * @param {string} desc.website - Website for more information about the extension.
 * @param {string} desc.log_level - How much logging information to print.  "all" for all messages, "none" for no messages, anything else for all messages not tagged as "quiet" by the Roon core.
 * @param {RoonApi~core_paired} [desc.core_paired] - Called when Roon pairs you.
 * @param {RoonApi~core_unpaired} [desc.core_unpaired] - Called when Roon unpairs you.
 * @param {RoonApi~core_found} [desc.core_found] - Called when a Roon Core is found. Usually, you want to implement pairing instead of using this.
 * @param {RoonApi~core_lost} [desc.core_lost] - Called when Roon Core is lost. Usually, you want to implement pairing instead of using this.
 */
/**
 * @callback RoonApi~core_paired
 * @param {Core} core
 */
/**
 * @callback RoonApi~core_unpaired
 * @param {Core} core
 */
/**
 * @callback RoonApi~core_found
 * @param {Core} core
 */
/**
 * @callback RoonApi~core_lost
 * @param {Core} core
 */

var Transport  = require('./transport-websocket.js'),
    MooMessage = require('./moomsg.js'),
    Core       = require('./core.js');

function Logger(roonapi) {
    this.roonapi = roonapi;
};

Logger.prototype.log = function() {
    if (this.roonapi.log_level != "none") {
        console.log.apply(null, arguments);
    }
};

function RoonApi(o) {
    this._service_request_handlers = {};

    if (typeof(o.extension_id)    != 'string') throw new Error("Roon Extension options is missing the required 'extension_id' property.");
    if (typeof(o.display_name)    != 'string') throw new Error("Roon Extension options is missing the required 'display_name' property.");
    if (typeof(o.display_version) != 'string') throw new Error("Roon Extension options is missing the required 'display_version' property.");
    if (typeof(o.publisher)       != 'string') throw new Error("Roon Extension options is missing the required 'publisher' property.");
    if (typeof(o.email)           != 'string') throw new Error("Roon Extension options is missing the required 'email' property.");

    if (typeof(o.set_persisted_state) == 'undefined')
        this.set_persisted_state = state => { this.save_config("roonstate", state); };
    else
        this.set_persisted_state = o.set_persisted_state;

    if (typeof(o.get_persisted_state) == 'undefined')
        this.get_persisted_state = () => { return this.load_config("roonstate") || {}; };
    else
        this.get_persisted_state = o.get_persisted_state;

    if (o.core_found && !o.core_lost) throw new Error("Roon Extension options .core_lost is required if you implement .core_found.");
    if (!o.core_found && o.core_lost) throw new Error("Roon Extension options .core_found is required if you implement .core_lost.");
    if (o.core_paired && !o.core_unpaired) throw new Error("Roon Extension options .core_unpaired is required if you implement .core_paired.");
    if (!o.core_paired && o.core_unpaired) throw new Error("Roon Extension options .core_paired is required if you implement .core_unpaired.");

    if (o.core_paired && o.core_found) throw new Error("Roon Extension options can not specify both .core_paired and .core_found.");

    if (o.core_found    && typeof(o.core_found)    != "function") throw new Error("Roon Extensions options has a .core_found which is not a function");
    if (o.core_lost     && typeof(o.core_lost)     != "function") throw new Error("Roon Extensions options has a .core_lost which is not a function");
    if (o.core_paired   && typeof(o.core_paired)   != "function") throw new Error("Roon Extensions options has a .core_paired which is not a function");
    if (o.core_unpaired && typeof(o.core_unpaired) != "function") throw new Error("Roon Extensions options has a .core_unpaired which is not a function");

    this.extension_reginfo = {
        extension_id:      o.extension_id,
        display_name:      o.display_name,
        display_version:   o.display_version,
        publisher:         o.publisher,
        email:             o.email,
        required_services: [],
        optional_services: [],
        provided_services: []
    };
    if (o.website) this.extension_reginfo.website = o.website;

    this.logger = new Logger(this);
    this.log_level = o.log_level;
    this.extension_opts = o;
    this.is_paired = false;
}

 /**
 * Initializes the services you require and that you provide.
 *
 * @this RoonApi
 * @param {object} services - Information about your extension. Used by Roon to display to the end user what is trying to access Roon.
 * @param {object[]} [services.required_services] - A list of services which the Roon Core must provide.
 * @param {object[]} [services.optional_services] - A list of services which the Roon Core may provide.
 * @param {object[]} [services.provided_services] - A list of services which this extension provides to the Roon Core.
 */
RoonApi.prototype.init_services = function(o) {
    if (!(o.required_services instanceof Array)) o.required_services = []; 
    if (!(o.optional_services instanceof Array)) o.optional_services = [];
    if (!(o.provided_services instanceof Array)) o.provided_services = [];

    if (o.required_services.length || o.optional_services.length)
	if (!this.extension_opts.core_paired && !this.extension_opts.core_found) throw new Error("Roon Extensions options has required or optional services, but has neither .core_paired nor .core_found.");

    if (this.extension_opts.core_paired) {
	let svc = this.register_service("com.roonlabs.pairing:1", {
	    subscriptions: [
	    {
		subscribe_name:   "subscribe_pairing",
		unsubscribe_name: "unsubscribe_pairing",
		start: (req) => {
		    req.send_continue("Subscribed", { paired_core_id: this.paired_core_id });
		}
	    }
	    ],
	    methods: {
		get_pairing: (req) => {
		    req.send_complete("Success", { paired_core_id: this.paired_core_id });
		},
		pair: (req) => {
		    this.paired_core_id = req.moo.core.core_id;
		    svc.send_continue_all("subscribe_pairing", "Changed", { paired_core_id: this.paired_core_id  })
		},
	    }
	});

	this.pairing_service_1 = {
	    services: [ svc ],

	    found_core: core => {
		if (!this.paired_core_id) {
		    let settings = this.get_persisted_state();
		    settings.paired_core_id = core.core_id;
		    this.set_persisted_state(settings);

		    this.paired_core_id = core.core_id;
                    this.is_paired = true;
		    svc.send_continue_all("subscribe_pairing", "Changed", { paired_core_id: this.paired_core_id  })
		}
		if (core.core_id == this.paired_core_id)
		    if (this.extension_opts.core_paired) this.extension_opts.core_paired(core);
	    },
	    lost_core: core => {
		if (core.core_id == this.paired_core_id)
                    this.is_paired = false;
		    if (this.extension_opts.core_unpaired) this.extension_opts.core_unpaired(core);
	    },
	};
	o.provided_services.push(this.pairing_service_1);
    }

    o.provided_services.push({ services: [ this.register_service("com.roonlabs.ping:1", {
                                                        methods: {
                                                            ping: function(req) {
                                                                req.send_complete("Success");
                                                            },
                                                        }
                                                    })]})
    o.required_services.forEach(svcobj => { svcobj.services.forEach(svc => { this.extension_reginfo.required_services.push(svc.name); }); });
    o.optional_services.forEach(svcobj => { svcobj.services.forEach(svc => { this.extension_reginfo.optional_services.push(svc.name); }); });
    o.provided_services.forEach(svcobj => { svcobj.services.forEach(svc => { this.extension_reginfo.provided_services.push(svc.name); }); });

    this.services_opts = o;
};

// - pull in Sood and provide discovery methods in Node, but not in WebBrowser
//
// - implement save_config/load_config based on:
//      Node:       require('fs')
//      WebBrowser: localStroage
//
if (typeof(window) == "undefined" || typeof(nw) !== "undefined") {
    /**
     * Begin the discovery process to find/connect to a Roon Core.
     */
    RoonApi.prototype.start_discovery = function() {
	if (this._sood) return;
	this._sood = require('./sood.js');
        this._sood.logger = this.logger;
        this._sood_conns = {};
        this._sood.on('message', msg => {
//	    this.logger.log(msg);
            if (msg.props.service_id == "00720724-5143-4a9b-abac-0e50cba674bb" && msg.props.unique_id) {
                if (this._sood_conns[msg.props.unique_id]) return;
                this._sood_conns[msg.props.unique_id] = true;
                var trans = new Transport(msg.from.ip, msg.props.http_port, msg.props.tcp_port, this.logger);
                this.connect(trans, () => {
                    delete(this._sood_conns[msg.props.unique_id]);
                });
            }
        });
        this._sood.on('network', () => {
            this._sood.query({ query_service_id: "00720724-5143-4a9b-abac-0e50cba674bb" });
        });
        this._sood.start(() => {
	    this._sood.query({ query_service_id: "00720724-5143-4a9b-abac-0e50cba674bb" });
            setInterval(() => this.periodic_scan(), (10 * 1000));
            this.scan_count = -1;
	});
    };

    RoonApi.prototype.periodic_scan = function() {
        this.scan_count += 1;
        if (this.is_paired) return;
        if ((this.scan_count < 6) || ((this.scan_count % 6) == 0)) {
            this._sood.query({ query_service_id: "00720724-5143-4a9b-abac-0e50cba674bb" });
        }
    };

    var fs = ((typeof _fs) === 'undefined') ? require('fs') : _fs;

    /**
     * Save a key value pair in the configuration data store.
     * @param {string} key
     * @param {object} value
     */
    RoonApi.prototype.save_config = function(k, v) {
        try {
            let config;
            try {
                let content = fs.readFileSync("config.json", { encoding: 'utf8' });
                config = JSON.parse(content) || {};
            } catch (e) {
                config = {};
            } 
            if (v === undefined || v === null)
                delete(config[k]);
            else
                config[k] = v;
            fs.writeFileSync("config.json", JSON.stringify(config, null, '    '));
        } catch (e) { }
    };

    /**
     * Load a key value pair in the configuration data store.
     * @param {string} key
     * @return {object} value
     */
    RoonApi.prototype.load_config = function(k) {
        try {
            let content = fs.readFileSync("config.json", { encoding: 'utf8' });
            return JSON.parse(content)[k];
        } catch (e) {
            return undefined;
        }
    };

} else {
    RoonApi.prototype.save_config = function(k, v) {
        if (v === undefined || v === null)
            localStorage.removeItem(k);
        else
            localStorage.setItem(k, JSON.stringify(v));
    };
    RoonApi.prototype.load_config = function(k) {
        try {
            let r = localStorage.getItem(k);
            return r ? JSON.parse(r) : undefined;
        } catch (e) {
            return undefined;
        }
    };
}

RoonApi.prototype.register_service = function(svcname, spec) {
    let ret = {
	_subtypes: { }
    };

    if (spec.subscriptions) {
	for (let x in spec.subscriptions) {
	    let s = spec.subscriptions[x];
	    let subname = s.subscribe_name;
	    ret._subtypes[subname] = { };

	    spec.methods[subname] = (req) => {
		// XXX make sure req.body.subscription_key exists or respond send_complete with error

                req.orig_send_complete = req.send_complete; 
                req.send_complete = function() {
                    this.orig_send_complete.apply(this, arguments);
                    delete(ret._subtypes[subname][req.moo.mooid][this.body.subscription_key]);
                };
		s.start(req);
                if (!ret._subtypes[subname].hasOwnProperty(req.moo.mooid)) {
                    ret._subtypes[subname][req.moo.mooid] = { };
                }
		ret._subtypes[subname][req.moo.mooid][req.body.subscription_key] = req;
	    };
	    spec.methods[s.unsubscribe_name] = (req) => {
		// XXX make sure req.body.subscription_key exists or respond send_complete with error
                delete(ret._subtypes[subname][req.moo.mooid][req.body.subscription_key]);
		if (s.end) s.end(req);
		req.send_complete("Unsubscribed");
	    };
	}
    }

    // process incoming requests from the other side
    this._service_request_handlers[svcname] = (req, mooid) => {
	// make sure the req's request name is something we know about
        if (req) {
            let method = spec.methods[req.msg.name]; 
            if (method) {
                method(req);
            } else {
                req.send_complete("InvalidRequest", { error: "unknown request name (" + svcname + ") : " + req.msg.name });
            }
        } else {
            if (spec.subscriptions) {
                for (let x in spec.subscriptions) {
                    let s = spec.subscriptions[x];
                    let subname = s.subscribe_name;
                    ret._subtypes[subname][mooid] = { };
                    if (s.end) s.end(req);
                }
            }
        }
    };

    ret.name = svcname;
    ret.send_continue_all = (subtype, name, props) => {
        for (let id in ret._subtypes[subtype]) {
            for (let x in ret._subtypes[subtype][id]) (ret._subtypes[subtype][id][x].send_continue(name, props));
        }
    };
    ret.send_complete_all = (subtype, name, props) => {
        for (let id in ret._subtypes[subtype]) {
            for (let x in ret._subtypes[subtype][id]) (ret._subtypes[subtype][id][x].send_complete(name, props));
        }
    };
    return ret;
};

RoonApi.prototype.connect = function(transport, cb) {
    transport.onopen = () => {
        //        this.logger.log("OPEN");

        transport.moo.send_request("com.roonlabs.registry:1/info",
			     (msg, body) => {
			         if (!msg) return;
			         let s = this.get_persisted_state();
			         if (s.tokens && s.tokens[body.core_id]) this.extension_reginfo.token = s.tokens[body.core_id];
			         
			         transport.moo.send_request("com.roonlabs.registry:1/register", this.extension_reginfo,
					                    (msg, body) => {
						                ev_registered.call(this, transport, msg, body);
					                    });
			     });
    };

    transport.onclose = () => {
//        this.logger.log("CLOSE");
        Object.keys(this._service_request_handlers).forEach(e => this._service_request_handlers[e] && this._service_request_handlers[e](null, transport.moo.mooid));
	if (transport.moo) transport.moo.close();
	transport.moo = undefined;
        transport.close();
        cb && cb();
    };

    /*
    transport.onerror = err => {
//        this.logger.log("ERROR", err);
	if (transport.moo) transport.moo.close();
	transport.moo = undefined;
        transport.close();
    };*/

    transport.onmessage = msg => {
//        this.logger.log("GOTMSG");
        var body = msg.body;
        delete(msg.body);
        var logging = msg && msg.headers && msg.headers["Logging"];
        msg.log = ((this.log_level == "all") || (logging != "quiet"));
        if (msg.verb == "REQUEST") {
            if (msg.log) this.logger.log('<-', msg.verb, msg.request_id, msg.service + "/" +  msg.name, body ? JSON.stringify(body) : "");
            var req = new MooMessage(transport.moo, msg, body, this.logger);
            var handler = this._service_request_handlers[msg.service];
            if (handler)
                handler(req, req.moo.mooid);
            else
                req.send_complete("InvalidRequest", { error: "unknown service: " + msg.service });
        } else {
            if (msg.log) this.logger.log('<-', msg.verb, msg.request_id, msg.name, body ? JSON.stringify(body) : "");
            transport.moo.handle_response(msg, body);
        }
    };

    return transport;
};

RoonApi.prototype.connect_to_host = function(host, http_port, tcp_port, cb) {
    var transport = new Transport(host, http_port, tcp_port, this.logger);
    return this.connect(transport, cb);
};

RoonApi.prototype.connect_to_host_with_token = function(host, http_port, tcp_port, token, cb) {
    var transport = this.connect_to_host(host, http_port, tcp_port, cb)
    transport.onopen = () => {
        let args = Object.assign({}, this.extension_reginfo);
        args.token = token;
        transport.moo.send_request("com.roonlabs.registry:1/register_one_time_token", args,
                                   (msg, body) => {
				       ev_registered.call(this, transport, msg, body);
                                   });
    };
    return transport;
}

function ev_registered(transport, msg, body) {
    if (!msg) { // lost connection
	if (transport.moo.core) {
	    if (this.pairing_service_1)        this.pairing_service_1.lost_core(transport.moo.core);
	    if (this.extension_opts.core_lost) this.extension_opts.core_lost(transport.moo.core);
	    transport.moo.core = undefined;
	}
    } else if (msg.name == "Registered") {
	transport.moo.core = new Core(transport.moo, this, body, this.logger);

	let settings = this.get_persisted_state();
	if (!settings.tokens) settings.tokens = {};
	settings.tokens[body.core_id] = body.token;
	this.set_persisted_state(settings);

	if (this.pairing_service_1)         this.pairing_service_1.found_core(transport.moo.core);
	if (this.extension_opts.core_found) this.extension_opts.core_found(transport.moo.core);
    }
}

exports = module.exports = RoonApi;

},{"./core.js":167,"./moomsg.js":170,"./sood.js":172,"./transport-websocket.js":173,"fs":1}],169:[function(require,module,exports){
(function (Buffer){
"use strict";

function Moo(transport) {
    this.transport = transport;
    this.reqid = 0;
    this.subkey = 0;
    this.requests = {};
    this.mooid = Moo._counter++;
    this.logger = transport.logger;
}

Moo._counter = 0;

Moo.prototype._subscribe_helper = function(svcname, reqname, cb) {
    var subscription_args = {};
    if (arguments.length == 4) {
        cb = arguments[3];
        subscription_args = arguments[2];
    }
    var self = this;
    var subkey = self.subkey++;
    subscription_args.subscription_key = subkey;
    self.send_request(svcname + "/subscribe_" + reqname, subscription_args,
                            function (msg, body) {
                                if (cb)
                                    cb(msg && msg.name == "Success" ? false : (msg ? msg.name : "NetworkError"), body);
                            });
    return {
        unsubscribe: function(ucb) {
            self.send_request(svcname + "/unsubscribe_" + reqname,
                                { subscription_key: subkey },
                                ucb);
        }
    };
};

Moo.prototype.send_request = function() {
    var name;
    var body;
    var content_type;

    var cb;

    var i = 0;
    name = arguments[i++];
    if (typeof(arguments[i]) != 'function') { body         = arguments[i++]; }
    if (typeof(arguments[i]) != 'function') { content_type = arguments[i++]; }
    cb = arguments[i++];

    var origbody = body;

    if (typeof(body) == 'undefined') {
        // nothing needed here
    } else if (!Buffer.isBuffer(body)) {
        body = Buffer.from(JSON.stringify(body), 'utf8');
        content_type = content_type || "application/json";
    } else {
        throw new Error("missing content_type");
    }

    let header = 'MOO/1 REQUEST ' + name + '\n' +
                 'Request-Id: ' + this.reqid + '\n';

    if (body) {
        header += 'Content-Length: ' + body.length + '\n' +
                  'Content-Type: ' + content_type + '\n';
    }

    this.logger.log('-> REQUEST', this.reqid, name, origbody ? JSON.stringify(origbody) : "");
    const m = Buffer.from(header + '\n');
    if (body)
        this.transport.send(Buffer.concat([ m, body ], m.length + body.length));
    else
        this.transport.send(m);

    this.requests[this.reqid] = { cb: cb };
    this.reqid++;
};

Moo.prototype.parse = function(buf) {
    var e = 0;
    var s = 0;
    var ret = {
        is_complete: false,
        is_error: false,
        bytes_consumed: 0,
        msg: {}
    };
    var msg = {
        content_length: 0,
        headers: {}
    };

    if ((typeof ArrayBuffer != 'undefined') && (buf instanceof (ArrayBuffer))) {
        // convert to Node Buffer
        var view = new Uint8Array(buf);
        var buf = new Buffer(buf.byteLength);
        for (var i = 0; i < buf.length; ++i) buf[i] = view[i];
    }
    var state;
    while (e < buf.length) {
        if (buf[e] == 0xa) {
            // parsing headers or first line?
            if (state == 'header') {
                if (s == e) {
                    // end of MOO header
                    if (msg.request_id === undefined) {
                        this.logger.log('MOO: missing Request-Id header: ', msg);
                        ret.is_error = true;
                        return ret;
                    }
                    e++;
                    if (msg.content_length > 0) {
                        if ((e + msg.content_length) > buf.length) {
                            this.logger.log("MOO: reached end of buffer while reading body");
                            return ret;
                        }
                        
                        if (msg.content_type == "application/json") {
                            var json = buf.toString('utf8', e, e+msg.content_length);
                            try {
                                msg.body = JSON.parse(json);
                            } catch (e) {
                                this.logger.log("MOO: bad json body: ", json, msg);
                                ret.is_error = true;
                                return ret;
                            }
                        } else {
                          msg.body = buf.slice(e, e + msg.content_length);
                        }
                        ret.bytes_consumed = e + msg.content_length;
                    } else {
                        ret.bytes_consumed = e;
                    }
                    ret.msg = msg;
                    ret.is_complete = true;
		    return ret;
                } else {
                    // parse MOO header line
                    var line = buf.toString('utf8', s, e);
                    var matches = line.match(/([^:]+): *(.*)/);
                    if (matches) {
                        if (matches[1] == "Content-Type")
                            msg.content_type = matches[2];
                        else if (matches[1] == "Content-Length")
                            msg.content_length = parseInt(matches[2]);
                        else if (matches[1] == "Request-Id")
                            msg.request_id = matches[2];
                        else
                            msg.headers[matches[1]] = matches[2];
                    } else {
                        this.logger.log("MOO: bad header: ", line, msg);
                        ret.is_error = true;
                        return ret;
                    }
                }
            } else {
                // parse MOO first line
                var line = buf.toString('utf8', s, e);
                var matches = line.match(/^MOO\/([0-9]+) ([A-Z]+) (.*)/);
                if (matches) {
                    msg.verb = matches[2];
                    if (msg.verb == "REQUEST") {
                        matches = matches[3].match(/([^\/]+)\/(.*)/);
                        if (matches) {
                            msg.service = matches[1];
                            msg.name = matches[2];
                        } else {
                            this.logger.log("MOO: bad request header: ", line, msg);
                            ret.is_error = true;
                            return ret;
                        }
                    } else {
                        msg.name = matches[3];
                    }
                    state = 'header';
                } else {
                    this.logger.log("MOO: bad header: ", line, msg);
                    ret.is_error = true;
                    return ret;
                }
            }
            s = e+1;
        }
        e++;
    }
    this.logger.log("MOO: reached end of buffer while parsing header");
    return ret;
};

Moo.prototype.handle_response = function(msg, body) {
    let cb = this.requests[msg.request_id].cb;
    if (cb) cb(msg, body);
    if (msg.verb == "COMPLETE") delete(this.requests[msg.request_id]);
};

Moo.prototype.close = function() {
    Object.keys(this.requests).forEach(e => {
	let cb = this.requests[e].cb;
	if (cb) cb();
    });
    this.requests = {};
};

exports = module.exports = Moo;

}).call(this,require("buffer").Buffer)
},{"buffer":48}],170:[function(require,module,exports){
(function (Buffer){
"use strict";

function MooMessage(moo, msg, body) {
    this.moo = moo;
    this.msg = msg;
    this.body = body;
}

MooMessage.prototype.send_continue = function() {
    var name;
    var body;
    var content_type;

    if (arguments.length == 1) {
        name = arguments[0];
    } else if (arguments.length == 2) {
        name = arguments[0];
        body = arguments[1];
    } else if (arguments.length >= 3) {
        name         = arguments[0];
        body         = arguments[1];
        content_type = arguments[2];
    }

    var origbody = body;

    if (typeof(body) == 'undefined') {
        // nothing needed here
    } else if (!Buffer.isBuffer(body)) {
        body = Buffer.from(JSON.stringify(body), 'utf8');
        content_type = content_type || "application/json";
    } else {
        throw new Error("missing content_type");
    }

    let header = 'MOO/1 CONTINUE ' + name + '\n' +
                 'Request-Id: ' + this.msg.request_id + '\n';

    if (body) {
        header += 'Content-Length: ' + body.length + '\n' +
                  'Content-Type: ' + content_type + '\n';
    }

    if (this.msg.log) this.moo.logger.log('-> CONTINUE', this.msg.request_id, name, origbody ? JSON.stringify(origbody) : "");
    const m = Buffer.from(header + '\n');
    if (body)
        this.moo.transport.send(Buffer.concat([ m, body ], m.length + body.length));
    else
        this.moo.transport.send(m);
};

MooMessage.prototype.send_complete = function() {
    var name;
    var body;
    var content_type;

    if (arguments.length == 1) {
        name = arguments[0];
    } else if (arguments.length == 2) {
        name = arguments[0];
        body = arguments[1];
    } else if (arguments.length >= 3) {
        name         = arguments[0];
        body         = arguments[1];
        content_type = arguments[2];
    }

    var origbody = body;

    if (typeof(body) == 'undefined') {
        // nothing needed here
    } else if (!Buffer.isBuffer(body)) {
        body = Buffer.from(JSON.stringify(body), 'utf8');
        content_type = content_type || "application/json";
    } else {
        throw new Error("missing content_type");
    }

    let header = 'MOO/1 COMPLETE ' + name + '\n' +
                 'Request-Id: ' + this.msg.request_id + '\n';

    if (body) {
        header += 'Content-Length: ' + body.length + '\n' +
                  'Content-Type: ' + content_type + '\n';
    }

    if (this.msg.log) this.moo.logger.log('-> COMPLETE', this.msg.request_id, name, origbody ? JSON.stringify(origbody) : "");
    const m = Buffer.from(header + '\n');
    if (body)
        this.moo.transport.send(Buffer.concat([ m, body ], m.length + body.length));
    else
        this.moo.transport.send(m);
};


exports = module.exports = MooMessage;

}).call(this,require("buffer").Buffer)
},{"buffer":48}],171:[function(require,module,exports){
(function (Buffer){
//     uuid.js
//
//     Copyright (c) 2010-2012 Robert Kieffer
//     MIT License - http://opensource.org/licenses/mit-license.php

/*global window, require, define */
(function(_window) {
  'use strict';

  // Unique ID creation requires a high quality random # generator.  We feature
  // detect to determine the best RNG source, normalizing to a function that
  // returns 128-bits of randomness, since that's what's usually required
  var _rng, _mathRNG, _nodeRNG, _whatwgRNG, _previousRoot;

  function setupBrowser() {
    // Allow for MSIE11 msCrypto
    var _crypto = _window.crypto || _window.msCrypto;

    if (!_rng && _crypto && _crypto.getRandomValues) {
      // WHATWG crypto-based RNG - http://wiki.whatwg.org/wiki/Crypto
      //
      // Moderately fast, high quality
      try {
        var _rnds8 = new Uint8Array(16);
        _whatwgRNG = _rng = function whatwgRNG() {
          _crypto.getRandomValues(_rnds8);
          return _rnds8;
        };
        _rng();
      } catch(e) {}
    }

    if (!_rng) {
      // Math.random()-based (RNG)
      //
      // If all else fails, use Math.random().  It's fast, but is of unspecified
      // quality.
      var  _rnds = new Array(16);
      _mathRNG = _rng = function() {
        for (var i = 0, r; i < 16; i++) {
          if ((i & 0x03) === 0) { r = Math.random() * 0x100000000; }
          _rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
        }

        return _rnds;
      };
      if ('undefined' !== typeof console && console.warn) {
        console.warn("[SECURITY] node-uuid: crypto not usable, falling back to insecure Math.random()");
      }
    }
  }

  function setupNode() {
    // Node.js crypto-based RNG - http://nodejs.org/docs/v0.6.2/api/crypto.html
    //
    // Moderately fast, high quality
    if ('function' === typeof require) {
      try {
        var _rb = require('crypto').randomBytes;
        _nodeRNG = _rng = _rb && function() {return _rb(16);};
        _rng();
      } catch(e) {}
    }
  }

  if (_window) {
    setupBrowser();
  } else {
    setupNode();
  }

  // Buffer class to use
  var BufferClass = ('function' === typeof Buffer) ? Buffer : Array;

  // Maps for number <-> hex string conversion
  var _byteToHex = [];
  var _hexToByte = {};
  for (var i = 0; i < 256; i++) {
    _byteToHex[i] = (i + 0x100).toString(16).substr(1);
    _hexToByte[_byteToHex[i]] = i;
  }

  // **`parse()` - Parse a UUID into it's component bytes**
  function parse(s, buf, offset) {
    var i = (buf && offset) || 0, ii = 0;

    buf = buf || [];
    s.toLowerCase().replace(/[0-9a-f]{2}/g, function(oct) {
      if (ii < 16) { // Don't overflow!
        buf[i + ii++] = _hexToByte[oct];
      }
    });

    // Zero out remaining bytes if string was short
    while (ii < 16) {
      buf[i + ii++] = 0;
    }

    return buf;
  }

  // **`unparse()` - Convert UUID byte array (ala parse()) into a string**
  function unparse(buf, offset) {
    var i = offset || 0, bth = _byteToHex;
    return  bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]];
  }

  // **`v1()` - Generate time-based UUID**
  //
  // Inspired by https://github.com/LiosK/UUID.js
  // and http://docs.python.org/library/uuid.html

  // random #'s we need to init node and clockseq
  var _seedBytes = _rng();

  // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
  var _nodeId = [
    _seedBytes[0] | 0x01,
    _seedBytes[1], _seedBytes[2], _seedBytes[3], _seedBytes[4], _seedBytes[5]
  ];

  // Per 4.2.2, randomize (14 bit) clockseq
  var _clockseq = (_seedBytes[6] << 8 | _seedBytes[7]) & 0x3fff;

  // Previous uuid creation time
  var _lastMSecs = 0, _lastNSecs = 0;

  // See https://github.com/broofa/node-uuid for API details
  function v1(options, buf, offset) {
    var i = buf && offset || 0;
    var b = buf || [];

    options = options || {};

    var clockseq = (options.clockseq != null) ? options.clockseq : _clockseq;

    // UUID timestamps are 100 nano-second units since the Gregorian epoch,
    // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
    // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
    // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
    var msecs = (options.msecs != null) ? options.msecs : new Date().getTime();

    // Per 4.2.1.2, use count of uuid's generated during the current clock
    // cycle to simulate higher resolution clock
    var nsecs = (options.nsecs != null) ? options.nsecs : _lastNSecs + 1;

    // Time since last uuid creation (in msecs)
    var dt = (msecs - _lastMSecs) + (nsecs - _lastNSecs)/10000;

    // Per 4.2.1.2, Bump clockseq on clock regression
    if (dt < 0 && options.clockseq == null) {
      clockseq = clockseq + 1 & 0x3fff;
    }

    // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
    // time interval
    if ((dt < 0 || msecs > _lastMSecs) && options.nsecs == null) {
      nsecs = 0;
    }

    // Per 4.2.1.2 Throw error if too many uuids are requested
    if (nsecs >= 10000) {
      throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
    }

    _lastMSecs = msecs;
    _lastNSecs = nsecs;
    _clockseq = clockseq;

    // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
    msecs += 12219292800000;

    // `time_low`
    var tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
    b[i++] = tl >>> 24 & 0xff;
    b[i++] = tl >>> 16 & 0xff;
    b[i++] = tl >>> 8 & 0xff;
    b[i++] = tl & 0xff;

    // `time_mid`
    var tmh = (msecs / 0x100000000 * 10000) & 0xfffffff;
    b[i++] = tmh >>> 8 & 0xff;
    b[i++] = tmh & 0xff;

    // `time_high_and_version`
    b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
    b[i++] = tmh >>> 16 & 0xff;

    // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
    b[i++] = clockseq >>> 8 | 0x80;

    // `clock_seq_low`
    b[i++] = clockseq & 0xff;

    // `node`
    var node = options.node || _nodeId;
    for (var n = 0; n < 6; n++) {
      b[i + n] = node[n];
    }

    return buf ? buf : unparse(b);
  }

  // **`v4()` - Generate random UUID**

  // See https://github.com/broofa/node-uuid for API details
  function v4(options, buf, offset) {
    // Deprecated - 'format' argument, as supported in v1.2
    var i = buf && offset || 0;

    if (typeof(options) === 'string') {
      buf = (options === 'binary') ? new BufferClass(16) : null;
      options = null;
    }
    options = options || {};

    var rnds = options.random || (options.rng || _rng)();

    // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
    rnds[6] = (rnds[6] & 0x0f) | 0x40;
    rnds[8] = (rnds[8] & 0x3f) | 0x80;

    // Copy bytes to buffer, if provided
    if (buf) {
      for (var ii = 0; ii < 16; ii++) {
        buf[i + ii] = rnds[ii];
      }
    }

    return buf || unparse(rnds);
  }

  // Export public API
  var uuid = v4;
  uuid.v1 = v1;
  uuid.v4 = v4;
  uuid.parse = parse;
  uuid.unparse = unparse;
  uuid.BufferClass = BufferClass;
  uuid._rng = _rng;
  uuid._mathRNG = _mathRNG;
  uuid._nodeRNG = _nodeRNG;
  uuid._whatwgRNG = _whatwgRNG;

  if (('undefined' !== typeof module) && module.exports) {
    // Publish as node.js module
    module.exports = uuid;
  } else if (typeof define === 'function' && define.amd) {
    // Publish as AMD module
    define(function() {return uuid;});


  } else {
    // Publish as global (in browsers)
    _previousRoot = _window.uuid;

    // **`noConflict()` - (browser only) to reset global 'uuid' var**
    uuid.noConflict = function() {
      _window.uuid = _previousRoot;
      return uuid;
    };

    _window.uuid = uuid;
  }
})('undefined' !== typeof window ? window : null);

}).call(this,require("buffer").Buffer)
},{"buffer":48,"crypto":56}],172:[function(require,module,exports){
(function (Buffer){
"use strict";

var util    = require("util"),
    events  = require('events'),
    dgram   = require('dgram'),
    IP      = require('ip'),
    uuid    = require('node-uuid'),
    os      = require('os');

var SOOD_PORT         = 9003;
var SOOD_MULTICAST_IP = "239.255.90.90";

function Sood() {
    this._multicast = {};
    this._unicast = {};
    this._iface_seq = 0;
//    this.on("message", (msg) => { this.logger.log(JSON.stringify(msg)); });
};

util.inherits(Sood, events.EventEmitter);

function _parse(buf, minfo) {
    var msg = {
	from: {
	    ip:   minfo.address,
	    port: minfo.port,
	},
	type: null,
	props: {},
    };
    try {
	if (buf.toString('utf8', 0, 4) != 'SOOD') return null;
	if (buf[4] != 2) return null;
	msg.type = buf.toString('utf8', 5, 6);
	let pos = 6;
	while (pos < buf.length) {
	    let len = buf[pos++];
	    if (len == 0) return null;
	    if (pos + len > buf.length) return null;
	    let name = buf.toString('utf8', pos, pos+len);
	    pos += len;
	    len = buf[pos++] << 8;
	    len |= buf[pos++];

	    let val;
	    if (len == 65535)
		val = null;
	    else if (len == 0)
		val = "";
	    else {
		if (pos + len > buf.length) return null;
		val = buf.toString('utf8', pos, pos+len);
		pos += len;
	    }
	    msg.props[name] = val;
	}
	return msg;

    } catch (e) {
	return null;
    }
}

Sood.prototype.query = function(msg) {
    if (!msg['_tid']) {
        msg['_tid'] =  uuid.v4(); 
    }
    
    var buf = new Buffer(65535);
    buf.write("SOOD");
    buf[4] = 2;
    buf.write("Q", 5);

    let pos = 6;
    for (var n in msg) {
	let namelen = buf.write(n, pos+1);
	buf[pos++] = namelen;
	pos += namelen;
	if (msg === undefined || msg === null) {
	    buf[pos++] = 0xff;
	    buf[pos++] = 0xff;
	} else {
	    namelen = buf.write(msg[n], pos+2);
	    buf[pos++] = namelen >> 8;
	    buf[pos++] = namelen & 0xff;
	    pos += namelen;
	}
    }

    for (var ip in this._multicast) {
	if (this._multicast[ip].send_sock) {
//	    this.logger.log('sending on mcast ' + ip);
	    this._multicast[ip].send_sock.send(buf, 0, pos, SOOD_PORT, SOOD_MULTICAST_IP);
//	    this.logger.log('sending on mcast ' + ip + ", bcast " + this._multicast[ip].broadcast);
	    this._multicast[ip].send_sock.send(buf, 0, pos, SOOD_PORT, this._multicast[ip].broadcast);
	}
    }
    if (this._unicast.send_sock) {
//	this.logger.log('sending on unicast');
	this._unicast.send_sock.send(buf, 0, pos, SOOD_PORT, SOOD_MULTICAST_IP);
    }
};

Sood.prototype.initsocket = function(cb) {
    this._iface_seq += 1;
    let list = os.networkInterfaces();
    var iface_change = false;
    for (var iface in list) {
        list[iface].forEach(e => {
            if (e.family == 'IPv4')
                iface_change = this._listen_iface(e.address, e.netmask, iface) || iface_change;
        });
    }

    for (var ip in this._multicast) {
        if (this._multicast[ip].seq != this._iface_seq) {
            delete this._multicast[ip];
            iface_change = true;
        }
    }

    let unicast = this._unicast;
    if (!unicast.send_sock) {
        //	    this.logger.log(`SOOD: new sock: unicast`);
        unicast.send_sock = dgram.createSocket({ type: 'udp4' });
        unicast.send_sock.on('error', (err) => {
            //		this.logger.log(`server error ${ip}`, err);
            unicast.send_sock.close();
        });
        unicast.send_sock.on('close', () => {
            //		this.logger.log(`closed unicast on ${ip}`);
            delete(unicast.send_sock);
        });
        unicast.send_sock.on('message', (msg, rinfo) => {
            msg = _parse(msg, rinfo);
            if (msg) this.emit("message", msg);
        });
        unicast.send_sock.bind({ port: 0 }, () => {
            unicast.send_sock.setBroadcast(true);
            unicast.send_sock.setMulticastTTL(1);
        });
    }

    if (cb) setTimeout(cb, 200);
    if (iface_change) this.emit('network');
};
Sood.prototype.start = function(cb) {
    if (!this.interface_timer) this.interface_timer = setInterval(() => this.initsocket(), 5000);
    this.initsocket(cb);
};
Sood.prototype.stop = function() {
    if (this.interface_timer) clearInterval(interface_timer);
    delete(this.interface_timer);
    for (ip in this._multicast) {
	try { this._multicast[ip].recv_sock.close(); } catch (e) { }
	try { this._multicast[ip].send_sock.close(); } catch (e) { }
    }
    try { this._unicast.send_sock.close(); } catch (e) { }
}

Sood.prototype._listen_iface = function(ip, netmask, ifacename) {
    if (!ip) return false;

    let iface = this._multicast[ip] = this._multicast[ip] || {};

    iface.seq = this._iface_seq;
    let new_iface = false;
        
    if (!iface.recv_sock) {
//	this.logger.log(`SOOD: new sock: recv ${ip}/${ifacename}`);
        new_iface = true;
	iface.recv_sock = dgram.createSocket({ type: 'udp4', reuseAddr: true });
	iface.recv_sock.on('error', (err) => {
//	    this.logger.log(`server error ${ip}`, err);
	    iface.recv_sock.close();
	});
	iface.recv_sock.on('close', () => {
//	    this.logger.log(`closed multicast on ${ip}`);
	    delete(iface.recv_sock);
	});
	iface.recv_sock.on('message', (msg, rinfo) => {
	    msg = _parse(msg, rinfo);
	    if (msg) this.emit("message", msg);
	});
	iface.recv_sock.bind({ port: SOOD_PORT }, () => {
	    iface.recv_sock.addMembership(SOOD_MULTICAST_IP, ip);
	});
    }
    if (!iface.send_sock) {
//        this.logger.log(`SOOD: new sock: send ${ip}/${ifacename}`);
        new_iface = true;
	iface.send_sock = dgram.createSocket({ type: 'udp4' });
        iface.broadcast = IP.subnet(ip, netmask).broadcastAddress;
	iface.send_sock.on('error', (err) => {
//	    this.logger.log(`server error ${ip}`, err);
	    iface.send_sock.close();
	});
	iface.send_sock.on('close', () => {
//	    this.logger.log(`closed multicast on ${ip}`);
	    delete(iface.send_sock);
	});
	iface.send_sock.on('message', (msg, rinfo) => {
	    msg = _parse(msg, rinfo);
	    if (msg) this.emit("message", msg);
	});
	iface.send_sock.bind({ port: 0, address: ip }, () => {
	    iface.send_sock.setBroadcast(true);
	    iface.send_sock.setMulticastTTL(1);
	});
    }
    return new_iface;

}

exports = module.exports = new Sood();

}).call(this,require("buffer").Buffer)
},{"buffer":48,"dgram":1,"events":83,"ip":164,"node-uuid":171,"os":107,"util":159}],173:[function(require,module,exports){
(function (global){
"use strict";

// polyfill websockets in Node
if (typeof(WebSocket) == "undefined") global.WebSocket = require('ws');

var Moo = require('./moo.js');

function Transport(ip, http_port, tcp_port, logger) {
    var host = ip + ":" + http_port;
    this.ws = new WebSocket('ws://' + host + '/api');
    if (typeof(window) != "undefined") this.ws.binaryType = 'arraybuffer';
    this.logger = logger;
    
    this.ws.onopen = () => {
        this.moo = new Moo(this);
        this.onopen();
    };

    this.ws.onclose = () => {
        this.onclose();
    };

    this.ws.onmessage = (event) => {
        if (!this.moo) return;
        var result = this.moo.parse(event.data);
        if (!result || result.is_error) {
            this.close();
            return;
        }
        this.onmessage(result.msg);
    };
}

Transport.prototype.send = function(buf) {
    this.ws.send(buf, { binary: true, mask: true});
};

Transport.prototype.close = function() {
    this.ws.close();
};

Transport.prototype.onopen = function() { };
Transport.prototype.onclose = function() { };
Transport.prototype.onmessage = function() { };

exports = module.exports = Transport;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./moo.js":169,"ws":undefined}],174:[function(require,module,exports){
/**
 * Convert array of 16 byte values to UUID string format of the form:
 * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
 */
var byteToHex = [];
for (var i = 0; i < 256; ++i) {
  byteToHex[i] = (i + 0x100).toString(16).substr(1);
}

function bytesToUuid(buf, offset) {
  var i = offset || 0;
  var bth = byteToHex;
  // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4
  return ([bth[buf[i++]], bth[buf[i++]], 
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]],
	bth[buf[i++]], bth[buf[i++]],
	bth[buf[i++]], bth[buf[i++]]]).join('');
}

module.exports = bytesToUuid;

},{}],175:[function(require,module,exports){
// Unique ID creation requires a high quality random # generator.  In the
// browser this is a little complicated due to unknown quality of Math.random()
// and inconsistent support for the `crypto` API.  We do the best we can via
// feature-detection

// getRandomValues needs to be invoked in a context where "this" is a Crypto
// implementation. Also, find the complete implementation of crypto on IE11.
var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto)) ||
                      (typeof(msCrypto) != 'undefined' && typeof window.msCrypto.getRandomValues == 'function' && msCrypto.getRandomValues.bind(msCrypto));

if (getRandomValues) {
  // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto
  var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef

  module.exports = function whatwgRNG() {
    getRandomValues(rnds8);
    return rnds8;
  };
} else {
  // Math.random()-based (RNG)
  //
  // If all else fails, use Math.random().  It's fast, but is of unspecified
  // quality.
  var rnds = new Array(16);

  module.exports = function mathRNG() {
    for (var i = 0, r; i < 16; i++) {
      if ((i & 0x03) === 0) r = Math.random() * 0x100000000;
      rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
    }

    return rnds;
  };
}

},{}],176:[function(require,module,exports){
var rng = require('./lib/rng');
var bytesToUuid = require('./lib/bytesToUuid');

function v4(options, buf, offset) {
  var i = buf && offset || 0;

  if (typeof(options) == 'string') {
    buf = options === 'binary' ? new Array(16) : null;
    options = null;
  }
  options = options || {};

  var rnds = options.random || (options.rng || rng)();

  // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
  rnds[6] = (rnds[6] & 0x0f) | 0x40;
  rnds[8] = (rnds[8] & 0x3f) | 0x80;

  // Copy bytes to buffer, if provided
  if (buf) {
    for (var ii = 0; ii < 16; ++ii) {
      buf[i + ii] = rnds[ii];
    }
  }

  return buf || bytesToUuid(rnds);
}

module.exports = v4;

},{"./lib/bytesToUuid":174,"./lib/rng":175}]},{},[161]);
