seedgen-standalone.js

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(function (Buffer){
/* bignumber.js v1.3.0 https://github.com/MikeMcl/bignumber.js/LICENCE */

/*jslint bitwise: true, eqeq: true, plusplus: true, sub: true, white: true, maxerr: 500 */
/*global module */

/*
  bignumber.js v1.3.0
  A JavaScript library for arbitrary-precision arithmetic.
  https://github.com/MikeMcl/bignumber.js
  Copyright (c) 2012 Michael Mclaughlin <M8ch88l@gmail.com>
  MIT Expat Licence
*/

/*********************************** DEFAULTS ************************************/

/*
 * The default values below must be integers within the stated ranges (inclusive).
 * Most of these values can be changed during run-time using BigNumber.config().
 */

/*
 * The limit on the value of DECIMAL_PLACES, TO_EXP_NEG, TO_EXP_POS, MIN_EXP,
 * MAX_EXP, and the argument to toFixed, toPrecision and toExponential, beyond
 * which an exception is thrown (if ERRORS is true).
 */
var MAX = 1E9,                                   // 0 to 1e+9

    // Limit of magnitude of exponent argument to toPower.
    MAX_POWER = 1E6,                             // 1 to 1e+6

    // The maximum number of decimal places for operations involving division.
    DECIMAL_PLACES = 20,                         // 0 to MAX

    /*
     * The rounding mode used when rounding to the above decimal places, and when
     * using toFixed, toPrecision and toExponential, and round (default value).
     * UP         0 Away from zero.
     * DOWN       1 Towards zero.
     * CEIL       2 Towards +Infinity.
     * FLOOR      3 Towards -Infinity.
     * HALF_UP    4 Towards nearest neighbour. If equidistant, up.
     * HALF_DOWN  5 Towards nearest neighbour. If equidistant, down.
     * HALF_EVEN  6 Towards nearest neighbour. If equidistant, towards even neighbour.
     * HALF_CEIL  7 Towards nearest neighbour. If equidistant, towards +Infinity.
     * HALF_FLOOR 8 Towards nearest neighbour. If equidistant, towards -Infinity.
     */
    ROUNDING_MODE = 4,                           // 0 to 8

    // EXPONENTIAL_AT : [TO_EXP_NEG , TO_EXP_POS]

    // The exponent value at and beneath which toString returns exponential notation.
    // Number type: -7
    TO_EXP_NEG = -7,                             // 0 to -MAX

    // The exponent value at and above which toString returns exponential notation.
    // Number type: 21
    TO_EXP_POS = 21,                             // 0 to MAX

    // RANGE : [MIN_EXP, MAX_EXP]

    // The minimum exponent value, beneath which underflow to zero occurs.
    // Number type: -324  (5e-324)
    MIN_EXP = -MAX,                              // -1 to -MAX

    // The maximum exponent value, above which overflow to Infinity occurs.
    // Number type:  308  (1.7976931348623157e+308)
    MAX_EXP = MAX,                               // 1 to MAX

    // Whether BigNumber Errors are ever thrown.
    // CHANGE parseInt to parseFloat if changing ERRORS to false.
    ERRORS = true,                               // true or false
    parse = parseInt,                            // parseInt or parseFloat

/***********************************************************************************/

    P = BigNumber.prototype,
    DIGITS = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_',
    outOfRange,
    id = 0,
    isValid = /^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,
    trim = String.prototype.trim || function () {return this.replace(/^\s+|\s+$/g, '')},
    ONE = BigNumber(1);


// CONSTRUCTOR


/*
 * The exported function.
 * Create and return a new instance of a BigNumber object.
 *
 * n {number|string|BigNumber} A numeric value.
 * [b] {number} The base of n. Integer, 2 to 64 inclusive.
 */
function BigNumber( n, b ) {
    var e, i, isNum, digits, valid, orig,
        x = this;

    // Enable constructor usage without new.
    if ( !(x instanceof BigNumber) ) {
        return new BigNumber( n, b )
    }

    // Duplicate.
    if ( n instanceof BigNumber ) {
        id = 0;

        // e is undefined.
        if ( b !== e ) {
            n += ''
        } else {
            x['s'] = n['s'];
            x['e'] = n['e'];
            x['c'] = ( n = n['c'] ) ? n.slice() : n;
            return;
        }
    }

    // If number, check if minus zero.
    if ( typeof n != 'string' ) {
        n = ( isNum = typeof n == 'number' ||
            Object.prototype.toString.call(n) == '[object Number]' ) &&
                n === 0 && 1 / n < 0 ? '-0' : n + '';
    }

    orig = n;

    if ( b === e && isValid.test(n) ) {

        // Determine sign.
        x['s'] = n.charAt(0) == '-' ? ( n = n.slice(1), -1 ) : 1;

    // Either n is not a valid BigNumber or a base has been specified.
    } else {

        // Enable exponential notation to be used with base 10 argument.
        // Ensure return value is rounded to DECIMAL_PLACES as with other bases.
        if ( b == 10 ) {

            return setMode( n, DECIMAL_PLACES, ROUNDING_MODE );
        }

        n = trim.call(n).replace( /^\+(?!-)/, '' );

        x['s'] = n.charAt(0) == '-' ? ( n = n.replace( /^-(?!-)/, '' ), -1 ) : 1;

        if ( b != null ) {

            if ( ( b == (b | 0) || !ERRORS ) &&
              !( outOfRange = !( b >= 2 && b < 65 ) ) ) {

                digits = '[' + DIGITS.slice( 0, b = b | 0 ) + ']+';

                // Before non-decimal number validity test and base conversion
                // remove the `.` from e.g. '1.', and replace e.g. '.1' with '0.1'.
                n = n.replace( /\.$/, '' ).replace( /^\./, '0.' );

                // Any number in exponential form will fail due to the e+/-.
                if ( valid = new RegExp(
                  '^' + digits + '(?:\\.' + digits + ')?$', b < 37 ? 'i' : '' ).test(n) ) {

                    if ( isNum ) {

                        if ( n.replace( /^0\.0*|\./, '' ).length > 15 ) {

                            // 'new BigNumber() number type has more than 15 significant digits: {n}'
                            ifExceptionsThrow( orig, 0 );
                        }

                        // Prevent later check for length on converted number.
                        isNum = !isNum;
                    }
                    n = convert( n, 10, b, x['s'] );

                } else if ( n != 'Infinity' && n != 'NaN' ) {

                    // 'new BigNumber() not a base {b} number: {n}'
                    ifExceptionsThrow( orig, 1, b );
                    n = 'NaN';
                }
            } else {

                // 'new BigNumber() base not an integer: {b}'
                // 'new BigNumber() base out of range: {b}'
                ifExceptionsThrow( b, 2 );

                // Ignore base.
                valid = isValid.test(n);
            }
        } else {
            valid = isValid.test(n);
        }

        if ( !valid ) {

            // Infinity/NaN
            x['c'] = x['e'] = null;

            // NaN
            if ( n != 'Infinity' ) {

                // No exception on NaN.
                if ( n != 'NaN' ) {

                    // 'new BigNumber() not a number: {n}'
                    ifExceptionsThrow( orig, 3 );
                }
                x['s'] = null;
            }
            id = 0;

            return;
        }
    }

    // Decimal point?
    if ( ( e = n.indexOf('.') ) > -1 ) {
        n = n.replace( '.', '' );
    }

    // Exponential form?
    if ( ( i = n.search( /e/i ) ) > 0 ) {

        // Determine exponent.
        if ( e < 0 ) {
            e = i;
        }
        e += +n.slice( i + 1 );
        n = n.substring( 0, i );

    } else if ( e < 0 ) {

        // Integer.
        e = n.length;
    }

    // Determine leading zeros.
    for ( i = 0; n.charAt(i) == '0'; i++ ) {
    }

    b = n.length;

    // Disallow numbers with over 15 significant digits if number type.
    if ( isNum && b > 15 && n.slice(i).length > 15 ) {

        // 'new BigNumber() number type has more than 15 significant digits: {n}'
        ifExceptionsThrow( orig, 0 );
    }
    id = 0;

    // Overflow?
    if ( ( e -= i + 1 ) > MAX_EXP ) {

        // Infinity.
        x['c'] = x['e'] = null;

    // Zero or underflow?
    } else if ( i == b || e < MIN_EXP ) {

        // Zero.
        x['c'] = [ x['e'] = 0 ];
    } else {

        // Determine trailing zeros.
        for ( ; n.charAt(--b) == '0'; ) {
        }

        x['e'] = e;
        x['c'] = [];

        // Convert string to array of digits (without leading and trailing zeros).
        for ( e = 0; i <= b; x['c'][e++] = +n.charAt(i++) ) {
        }
    }
}


// CONSTRUCTOR PROPERTIES/METHODS


BigNumber['ROUND_UP'] = 0;
BigNumber['ROUND_DOWN'] = 1;
BigNumber['ROUND_CEIL'] = 2;
BigNumber['ROUND_FLOOR'] = 3;
BigNumber['ROUND_HALF_UP'] = 4;
BigNumber['ROUND_HALF_DOWN'] = 5;
BigNumber['ROUND_HALF_EVEN'] = 6;
BigNumber['ROUND_HALF_CEIL'] = 7;
BigNumber['ROUND_HALF_FLOOR'] = 8;

/*
 * Create an instance from a Buffer
 */
BigNumber['fromBuffer'] = function (buf, opts) {

    if (!opts) opts = {};

    var endian = { 1 : 'big', '-1' : 'little' }[opts.endian]
        || opts.endian || 'big'
    ;

    var size = opts.size === 'auto' ? Math.ceil(buf.length) : (opts.size || 1);

    if (buf.length % size !== 0) {
        throw new RangeError('Buffer length (' + buf.length + ')'
            + ' must be a multiple of size (' + size + ')'
        );
    }

    var hex = [];
    for (var i = 0; i < buf.length; i += size) {
        var chunk = [];
        for (var j = 0; j < size; j++) {
            chunk.push(buf[
                i + (endian === 'big' ? j : (size - j - 1))
            ]);
        }

        hex.push(chunk
            .map(function (c) {
                return (c < 16 ? '0' : '') + c.toString(16);
            })
            .join('')
        );
    }

    return BigNumber(hex.join(''), 16);

};

/*
 * Configure infrequently-changing library-wide settings.
 *
 * Accept an object or an argument list, with one or many of the following
 * properties or parameters respectively:
 * [ DECIMAL_PLACES [, ROUNDING_MODE [, EXPONENTIAL_AT [, RANGE [, ERRORS ]]]]]
 *
 * E.g.
 * BigNumber.config(20, 4) is equivalent to
 * BigNumber.config({ DECIMAL_PLACES : 20, ROUNDING_MODE : 4 })
 * Ignore properties/parameters set to null or undefined.
 *
 * Return an object with the properties current values.
 */
BigNumber['config'] = function () {
    var v, p,
        i = 0,
        r = {},
        a = arguments,
        o = a[0],
        c = 'config',
        inRange = function ( n, lo, hi ) {
          return !( ( outOfRange = n < lo || n > hi ) ||
            parse(n) != n && n !== 0 );
        },
        has = o && typeof o == 'object'
          ? function () {if ( o.hasOwnProperty(p) ) return ( v = o[p] ) != null}
          : function () {if ( a.length > i ) return ( v = a[i++] ) != null};

    // [DECIMAL_PLACES] {number} Integer, 0 to MAX inclusive.
    if ( has( p = 'DECIMAL_PLACES' ) ) {

        if ( inRange( v, 0, MAX ) ) {
            DECIMAL_PLACES = v | 0;
        } else {

            // 'config() DECIMAL_PLACES not an integer: {v}'
            // 'config() DECIMAL_PLACES out of range: {v}'
            ifExceptionsThrow( v, p, c );
        }
    }
    r[p] = DECIMAL_PLACES;

    // [ROUNDING_MODE] {number} Integer, 0 to 8 inclusive.
    if ( has( p = 'ROUNDING_MODE' ) ) {

        if ( inRange( v, 0, 8 ) ) {
            ROUNDING_MODE = v | 0;
        } else {

            // 'config() ROUNDING_MODE not an integer: {v}'
            // 'config() ROUNDING_MODE out of range: {v}'
            ifExceptionsThrow( v, p, c );
        }
    }
    r[p] = ROUNDING_MODE;

    /*
     * [EXPONENTIAL_AT] {number|number[]} Integer, -MAX to MAX inclusive or
     * [ integer -MAX to 0 inclusive, 0 to MAX inclusive ].
     */
    if ( has( p = 'EXPONENTIAL_AT' ) ) {

        if ( inRange( v, -MAX, MAX ) ) {
            TO_EXP_NEG = -( TO_EXP_POS = ~~( v < 0 ? -v : +v ) );
        } else if ( !outOfRange && v && inRange( v[0], -MAX, 0 ) &&
          inRange( v[1], 0, MAX ) ) {
            TO_EXP_NEG = ~~v[0];
            TO_EXP_POS = ~~v[1];
        } else {

            // 'config() EXPONENTIAL_AT not an integer or not [integer, integer]: {v}'
            // 'config() EXPONENTIAL_AT out of range or not [negative, positive: {v}'
            ifExceptionsThrow( v, p, c, 1 );
        }
    }
    r[p] = [ TO_EXP_NEG, TO_EXP_POS ];

    /*
     * [RANGE][ {number|number[]} Non-zero integer, -MAX to MAX inclusive or
     * [ integer -MAX to -1 inclusive, integer 1 to MAX inclusive ].
     */
    if ( has( p = 'RANGE' ) ) {

        if ( inRange( v, -MAX, MAX ) && ~~v ) {
            MIN_EXP = -( MAX_EXP = ~~( v < 0 ? -v : +v ) );
        } else if ( !outOfRange && v && inRange( v[0], -MAX, -1 ) &&
          inRange( v[1], 1, MAX ) ) {
            MIN_EXP = ~~v[0], MAX_EXP = ~~v[1];
        } else {

            // 'config() RANGE not a non-zero integer or not [integer, integer]: {v}'
            // 'config() RANGE out of range or not [negative, positive: {v}'
            ifExceptionsThrow( v, p, c, 1, 1 );
        }
    }
    r[p] = [ MIN_EXP, MAX_EXP ];

    // [ERRORS] {boolean|number} true, false, 1 or 0.
    if ( has( p = 'ERRORS' ) ) {

        if ( v === !!v || v === 1 || v === 0 ) {
            parse = ( outOfRange = id = 0, ERRORS = !!v )
              ? parseInt
              : parseFloat;
        } else {

            // 'config() ERRORS not a boolean or binary digit: {v}'
            ifExceptionsThrow( v, p, c, 0, 0, 1 );
        }
    }
    r[p] = ERRORS;

    return r;
};


// PRIVATE FUNCTIONS


// Assemble error messages. Throw BigNumber Errors.
function ifExceptionsThrow( arg, i, j, isArray, isRange, isErrors) {

    if ( ERRORS ) {
        var error,
            method = ['new BigNumber', 'cmp', 'div', 'eq', 'gt', 'gte', 'lt',
                 'lte', 'minus', 'mod', 'plus', 'times', 'toFr'
                ][ id ? id < 0 ? -id : id : 1 / id < 0 ? 1 : 0 ] + '()',
            message = outOfRange ? ' out of range' : ' not a' +
              ( isRange ? ' non-zero' : 'n' ) + ' integer';

        message = ( [
            method + ' number type has more than 15 significant digits',
            method + ' not a base ' + j + ' number',
            method + ' base' + message,
            method + ' not a number' ][i] ||
              j + '() ' + i + ( isErrors
                ? ' not a boolean or binary digit'
                : message + ( isArray
                  ? ' or not [' + ( outOfRange
                    ? ' negative, positive'
                    : ' integer, integer' ) + ' ]'
                  : '' ) ) ) + ': ' + arg;

        outOfRange = id = 0;
        error = new Error(message);
        error['name'] = 'BigNumber Error';

        throw error;
    }
}


/*
 * Convert a numeric string of baseIn to a numeric string of baseOut.
 */
function convert( nStr, baseOut, baseIn, sign ) {
    var e, dvs, dvd, nArr, fracArr, fracBN;

    // Convert string of base bIn to an array of numbers of baseOut.
    // Eg. strToArr('255', 10) where baseOut is 16, returns [15, 15].
    // Eg. strToArr('ff', 16)  where baseOut is 10, returns [2, 5, 5].
    function strToArr( str, bIn ) {
        var j,
            i = 0,
            strL = str.length,
            arrL,
            arr = [0];

        for ( bIn = bIn || baseIn; i < strL; i++ ) {

            for ( arrL = arr.length, j = 0; j < arrL; arr[j] *= bIn, j++ ) {
            }

            for ( arr[0] += DIGITS.indexOf( str.charAt(i) ), j = 0;
                  j < arr.length;
                  j++ ) {

                if ( arr[j] > baseOut - 1 ) {

                    if ( arr[j + 1] == null ) {
                        arr[j + 1] = 0;
                    }
                    arr[j + 1] += arr[j] / baseOut ^ 0;
                    arr[j] %= baseOut;
                }
            }
        }

        return arr.reverse();
    }

    // Convert array to string.
    // E.g. arrToStr( [9, 10, 11] ) becomes '9ab' (in bases above 11).
    function arrToStr( arr ) {
        var i = 0,
            arrL = arr.length,
            str = '';

        for ( ; i < arrL; str += DIGITS.charAt( arr[i++] ) ) {
        }

        return str;
    }

    if ( baseIn < 37 ) {
        nStr = nStr.toLowerCase();
    }

    /*
     * If non-integer convert integer part and fraction part separately.
     * Convert the fraction part as if it is an integer than use division to
     * reduce it down again to a value less than one.
     */
    if ( ( e = nStr.indexOf( '.' ) ) > -1 ) {

        /*
         * Calculate the power to which to raise the base to get the number
         * to divide the fraction part by after it has been converted as an
         * integer to the required base.
         */
        e = nStr.length - e - 1;

        // Use toFixed to avoid possible exponential notation.
        dvs = strToArr( new BigNumber(baseIn)['pow'](e)['toF'](), 10 );

        nArr = nStr.split('.');

        // Convert the base of the fraction part (as integer).
        dvd = strToArr( nArr[1] );

        // Convert the base of the integer part.
        nArr = strToArr( nArr[0] );

        // Result will be a BigNumber with a value less than 1.
        fracBN = divide( dvd, dvs, dvd.length - dvs.length, sign, baseOut,
          // Is least significant digit of integer part an odd number?
          nArr[nArr.length - 1] & 1 );

        fracArr = fracBN['c'];

        // e can be <= 0  ( if e == 0, fracArr is [0] or [1] ).
        if ( e = fracBN['e'] ) {

            // Append zeros according to the exponent of the result.
            for ( ; ++e; fracArr.unshift(0) ) {
            }

            // Append the fraction part to the converted integer part.
            nStr = arrToStr(nArr) + '.' + arrToStr(fracArr);

        // fracArr is [1].
        // Fraction digits rounded up, so increment last digit of integer part.
        } else if ( fracArr[0] ) {

            if ( nArr[ e = nArr.length - 1 ] < baseOut - 1 ) {
                ++nArr[e];
                nStr = arrToStr(nArr);
            } else {
                nStr = new BigNumber( arrToStr(nArr),
                  baseOut )['plus'](ONE)['toS'](baseOut);
            }

        // fracArr is [0]. No fraction digits.
        } else {
            nStr = arrToStr(nArr);
        }
    } else {

        // Simple integer. Convert base.
        nStr = arrToStr( strToArr(nStr) );
    }

    return nStr;
}


// Perform division in the specified base. Called by div and convert.
function divide( dvd, dvs, exp, s, base, isOdd ) {
    var dvsL, dvsT, next, cmp, remI,
        dvsZ = dvs.slice(),
        dvdI = dvsL = dvs.length,
        dvdL = dvd.length,
        rem = dvd.slice( 0, dvsL ),
        remL = rem.length,
        quo = new BigNumber(ONE),
        qc = quo['c'] = [],
        qi = 0,
        dig = DECIMAL_PLACES + ( quo['e'] = exp ) + 1;

    quo['s'] = s;
    s = dig < 0 ? 0 : dig;

    // Add zeros to make remainder as long as divisor.
    for ( ; remL++ < dvsL; rem.push(0) ) {
    }

    // Create version of divisor with leading zero.
    dvsZ.unshift(0);

    do {

        // 'next' is how many times the divisor goes into the current remainder.
        for ( next = 0; next < base; next++ ) {

            // Compare divisor and remainder.
            if ( dvsL != ( remL = rem.length ) ) {
                cmp = dvsL > remL ? 1 : -1;
            } else {
                for ( remI = -1, cmp = 0; ++remI < dvsL; ) {

                    if ( dvs[remI] != rem[remI] ) {
                        cmp = dvs[remI] > rem[remI] ? 1 : -1;
                        break;
                    }
                }
            }

            // Subtract divisor from remainder (if divisor < remainder).
            if ( cmp < 0 ) {

                // Remainder cannot be more than one digit longer than divisor.
                // Equalise lengths using divisor with extra leading zero?
                for ( dvsT = remL == dvsL ? dvs : dvsZ; remL; ) {

                    if ( rem[--remL] < dvsT[remL] ) {

                        for ( remI = remL;
                          remI && !rem[--remI];
                            rem[remI] = base - 1 ) {
                        }
                        --rem[remI];
                        rem[remL] += base;
                    }
                    rem[remL] -= dvsT[remL];
                }
                for ( ; !rem[0]; rem.shift() ) {
                }
            } else {
                break;
            }
        }

        // Add the 'next' digit to the result array.
        qc[qi++] = cmp ? next : ++next;

        // Update the remainder.
        rem[0] && cmp
          ? ( rem[remL] = dvd[dvdI] || 0 )
          : ( rem = [ dvd[dvdI] ] );

    } while ( ( dvdI++ < dvdL || rem[0] != null ) && s-- );

    // Leading zero? Do not remove if result is simply zero (qi == 1).
    if ( !qc[0] && qi != 1 ) {

        // There can't be more than one zero.
        --quo['e'];
        qc.shift();
    }

    // Round?
    if ( qi > dig ) {
        rnd( quo, DECIMAL_PLACES, base, isOdd, rem[0] != null );
    }

    // Overflow?
    if ( quo['e'] > MAX_EXP ) {

        // Infinity.
        quo['c'] = quo['e'] = null;

    // Underflow?
    } else if ( quo['e'] < MIN_EXP ) {

        // Zero.
        quo['c'] = [quo['e'] = 0];
    }

    return quo;
}


/*
 * Return a string representing the value of BigNumber n in normal or
 * exponential notation rounded to the specified decimal places or
 * significant digits.
 * Called by toString, toExponential (exp 1), toFixed, and toPrecision (exp 2).
 * d is the index (with the value in normal notation) of the digit that may be
 * rounded up.
 */
function format( n, d, exp ) {

    // Initially, i is the number of decimal places required.
    var i = d - (n = new BigNumber(n))['e'],
        c = n['c'];

    // +-Infinity or NaN?
    if ( !c ) {
        return n['toS']();
    }

    // Round?
    if ( c.length > ++d ) {
        rnd( n, i, 10 );
    }

    // Recalculate d if toFixed as n['e'] may have changed if value rounded up.
    i = c[0] == 0 ? i + 1 : exp ? d : n['e'] + i + 1;

    // Append zeros?
    for ( ; c.length < i; c.push(0) ) {
    }
    i = n['e'];

    /*
     * toPrecision returns exponential notation if the number of significant
     * digits specified is less than the number of digits necessary to
     * represent the integer part of the value in normal notation.
     */
    return exp == 1 || exp == 2 && ( --d < i || i <= TO_EXP_NEG )

      // Exponential notation.
      ? ( n['s'] < 0 && c[0] ? '-' : '' ) + ( c.length > 1
        ? ( c.splice( 1, 0, '.' ), c.join('') )
        : c[0] ) + ( i < 0 ? 'e' : 'e+' ) + i

      // Normal notation.
      : n['toS']();
}


// Round if necessary.
// Called by divide, format, setMode and sqrt.
function rnd( x, dp, base, isOdd, r ) {
    var xc = x['c'],
        isNeg = x['s'] < 0,
        half = base / 2,
        i = x['e'] + dp + 1,

        // 'next' is the digit after the digit that may be rounded up.
        next = xc[i],

        /*
         * 'more' is whether there are digits after 'next'.
         * E.g.
         * 0.005 (e = -3) to be rounded to 0 decimal places (dp = 0) gives i = -2
         * The 'next' digit is zero, and there ARE 'more' digits after it.
         * 0.5 (e = -1) dp = 0 gives i = 0
         * The 'next' digit is 5 and there are no 'more' digits after it.
         */
        more = r || i < 0 || xc[i + 1] != null;

    r = ROUNDING_MODE < 4
      ? ( next != null || more ) &&
        ( ROUNDING_MODE == 0 ||
           ROUNDING_MODE == 2 && !isNeg ||
             ROUNDING_MODE == 3 && isNeg )
      : next > half || next == half &&
        ( ROUNDING_MODE == 4 || more ||

          /*
           * isOdd is used in base conversion and refers to the least significant
           * digit of the integer part of the value to be converted. The fraction
           * part is rounded by this method separately from the integer part.
           */
          ROUNDING_MODE == 6 && ( xc[i - 1] & 1 || !dp && isOdd ) ||
            ROUNDING_MODE == 7 && !isNeg ||
              ROUNDING_MODE == 8 && isNeg );

    if ( i < 1 || !xc[0] ) {
        xc.length = 0;
        xc.push(0);

        if ( r ) {

            // 1, 0.1, 0.01, 0.001, 0.0001 etc.
            xc[0] = 1;
            x['e'] = -dp;
        } else {

            // Zero.
            x['e'] = 0;
        }

        return x;
    }

    // Remove any digits after the required decimal places.
    xc.length = i--;

    // Round up?
    if ( r ) {

        // Rounding up may mean the previous digit has to be rounded up and so on.
        for ( --base; ++xc[i] > base; ) {
            xc[i] = 0;

            if ( !i-- ) {
                ++x['e'];
                xc.unshift(1);
            }
        }
    }

    // Remove trailing zeros.
    for ( i = xc.length; !xc[--i]; xc.pop() ) {
    }

    return x;
}


// Round after setting the appropriate rounding mode.
// Handles ceil, floor and round.
function setMode( x, dp, rm ) {
    var r = ROUNDING_MODE;

    ROUNDING_MODE = rm;
    x = new BigNumber(x);
    x['c'] && rnd( x, dp, 10 );
    ROUNDING_MODE = r;

    return x;
}


// PROTOTYPE/INSTANCE METHODS


/*
 * Return a new BigNumber whose value is the absolute value of this BigNumber.
 */
P['abs'] = P['absoluteValue'] = function () {
    var x = new BigNumber(this);

    if ( x['s'] < 0 ) {
        x['s'] = 1;
    }

    return x;
};

/*
 * Return the bit length of the number.
 */
P['bitLength'] = function () {
    return this.toString(2).length;
};


/*
 * Return a new BigNumber whose value is the value of this BigNumber
 * rounded to a whole number in the direction of Infinity.
 */
P['ceil'] = function () {
    return setMode( this, 0, 2 );
};


/*
 * Return
 * 1 if the value of this BigNumber is greater than the value of BigNumber(y, b),
 * -1 if the value of this BigNumber is less than the value of BigNumber(y, b),
 * 0 if they have the same value,
 * or null if the value of either is NaN.
 */
P['comparedTo'] = P['cmp'] = function ( y, b ) {
    var a,
        x = this,
        xc = x['c'],
        yc = ( id = -id, y = new BigNumber( y, b ) )['c'],
        i = x['s'],
        j = y['s'],
        k = x['e'],
        l = y['e'];

    // Either NaN?
    if ( !i || !j ) {
        return null;
    }

    a = xc && !xc[0], b = yc && !yc[0];

    // Either zero?
    if ( a || b ) {
        return a ? b ? 0 : -j : i;
    }

    // Signs differ?
    if ( i != j ) {
        return i;
    }

    // Either Infinity?
    if ( a = i < 0, b = k == l, !xc || !yc ) {
        return b ? 0 : !xc ^ a ? 1 : -1;
    }

    // Compare exponents.
    if ( !b ) {
        return k > l ^ a ? 1 : -1;
    }

    // Compare digit by digit.
    for ( i = -1,
          j = ( k = xc.length ) < ( l = yc.length ) ? k : l;
          ++i < j; ) {

        if ( xc[i] != yc[i] ) {
            return xc[i] > yc[i] ^ a ? 1 : -1;
        }
    }
    // Compare lengths.
    return k == l ? 0 : k > l ^ a ? 1 : -1;
};


/*
 *  n / 0 = I
 *  n / N = N
 *  n / I = 0
 *  0 / n = 0
 *  0 / 0 = N
 *  0 / N = N
 *  0 / I = 0
 *  N / n = N
 *  N / 0 = N
 *  N / N = N
 *  N / I = N
 *  I / n = I
 *  I / 0 = I
 *  I / N = N
 *  I / I = N
 *
 * Return a new BigNumber whose value is the value of this BigNumber
 * divided by the value of BigNumber(y, b), rounded according to
 * DECIMAL_PLACES and ROUNDING_MODE.
 */
P['dividedBy'] = P['div'] = function ( y, b ) {
    var xc = this['c'],
        xe = this['e'],
        xs = this['s'],
        yc = ( id = 2, y = new BigNumber( y, b ) )['c'],
        ye = y['e'],
        ys = y['s'],
        s = xs == ys ? 1 : -1;

    // Either NaN/Infinity/0?
    return !xe && ( !xc || !xc[0] ) || !ye && ( !yc || !yc[0] )

      // Either NaN?
      ? new BigNumber( !xs || !ys ||

        // Both 0 or both Infinity?
        ( xc ? yc && xc[0] == yc[0] : !yc )

          // Return NaN.
          ? NaN

          // x is 0 or y is Infinity?
          : xc && xc[0] == 0 || !yc

            // Return +-0.
            ? s * 0

            // y is 0. Return +-Infinity.
            : s / 0 )

      : divide( xc, yc, xe - ye, s, 10 );
};


/*
 * Return true if the value of this BigNumber is equal to the value of
 * BigNumber(n, b), otherwise returns false.
 */
P['equals'] = P['eq'] = function ( n, b ) {
    id = 3;
    return this['cmp']( n, b ) === 0;
};


/*
 * Return a new BigNumber whose value is the value of this BigNumber
 * rounded to a whole number in the direction of -Infinity.
 */
P['floor'] = function () {
    return setMode( this, 0, 3 );
};


/*
 * Return true if the value of this BigNumber is greater than the value of
 * BigNumber(n, b), otherwise returns false.
 */
P['greaterThan'] = P['gt'] = function ( n, b ) {
    id = 4;
    return this['cmp']( n, b ) > 0;
};


/*
 * Return true if the value of this BigNumber is greater than or equal to
 * the value of BigNumber(n, b), otherwise returns false.
 */
P['greaterThanOrEqualTo'] = P['gte'] = P['gt'] = function ( n, b ) {
    id = 5;
    return ( b = this['cmp']( n, b ) ) == 1 || b === 0;
};


/*
 * Return true if the value of this BigNumber is a finite number, otherwise
 * returns false.
 */
P['isFinite'] = P['isF'] = function () {
    return !!this['c'];
};


/*
 * Return true if the value of this BigNumber is NaN, otherwise returns
 * false.
 */
P['isNaN'] = function () {
    return !this['s'];
};


/*
 * Return true if the value of this BigNumber is negative, otherwise
 * returns false.
 */
P['isNegative'] = P['isNeg'] = function () {
    return this['s'] < 0;
};


/*
 * Return true if the value of this BigNumber is 0 or -0, otherwise returns
 * false.
 */
P['isZero'] = P['isZ'] = function () {
    return !!this['c'] && this['c'][0] == 0;
};


/*
 * Return true if the value of this BigNumber is less than the value of
 * BigNumber(n, b), otherwise returns false.
 */
P['lessThan'] = P['lt'] = function ( n, b ) {
    id = 6;
    return this['cmp']( n, b ) < 0;
};


/*
 * Return true if the value of this BigNumber is less than or equal to the
 * value of BigNumber(n, b), otherwise returns false.
 */
P['lessThanOrEqualTo'] = P['lte'] = P['le'] = function ( n, b ) {
    id = 7;
    return ( b = this['cmp']( n, b ) ) == -1 || b === 0;
};


/*
 *  n - 0 = n
 *  n - N = N
 *  n - I = -I
 *  0 - n = -n
 *  0 - 0 = 0
 *  0 - N = N
 *  0 - I = -I
 *  N - n = N
 *  N - 0 = N
 *  N - N = N
 *  N - I = N
 *  I - n = I
 *  I - 0 = I
 *  I - N = N
 *  I - I = N
 *
 * Return a new BigNumber whose value is the value of this BigNumber minus
 * the value of BigNumber(y, b).
 */
P['minus'] = P['sub'] = function ( y, b ) {
    var d, i, j, xLTy,
        x = this,
        a = x['s'];

    b = ( id = 8, y = new BigNumber( y, b ) )['s'];

    // Either NaN?
    if ( !a || !b ) {
        return new BigNumber(NaN);
    }

    // Signs differ?
    if ( a != b ) {
        return y['s'] = -b, x['plus'](y);
    }

    var xc = x['c'],
        xe = x['e'],
        yc = y['c'],
        ye = y['e'];

    if ( !xe || !ye ) {

        // Either Infinity?
        if ( !xc || !yc ) {
            return xc ? ( y['s'] = -b, y ) : new BigNumber( yc ? x : NaN );
        }

        // Either zero?
        if ( !xc[0] || !yc[0] ) {

            // y is non-zero?
            return yc[0]
              ? ( y['s'] = -b, y )

              // x is non-zero?
              : new BigNumber( xc[0]
                ? x

                // Both are zero.
                // IEEE 754 (2008) 6.3: n - n = -0 when rounding to -Infinity
                : ROUNDING_MODE == 3 ? -0 : 0 );
        }
    }

    // Determine which is the bigger number.
    // Prepend zeros to equalise exponents.
    if ( xc = xc.slice(), a = xe - ye ) {
        d = ( xLTy = a < 0 ) ? ( a = -a, xc ) : ( ye = xe, yc );

        for ( d.reverse(), b = a; b--; d.push(0) ) {
        }
        d.reverse();
    } else {

        // Exponents equal. Check digit by digit.
        j = ( ( xLTy = xc.length < yc.length ) ? xc : yc ).length;

        for ( a = b = 0; b < j; b++ ) {

            if ( xc[b] != yc[b] ) {
                xLTy = xc[b] < yc[b];
                break;
            }
        }
    }

    // x < y? Point xc to the array of the bigger number.
    if ( xLTy ) {
        d = xc, xc = yc, yc = d;
        y['s'] = -y['s'];
    }

    /*
     * Append zeros to xc if shorter. No need to add zeros to yc if shorter
     * as subtraction only needs to start at yc.length.
     */
    if ( ( b = -( ( j = xc.length ) - yc.length ) ) > 0 ) {

        for ( ; b--; xc[j++] = 0 ) {
        }
    }

    // Subtract yc from xc.
    for ( b = yc.length; b > a; ){

        if ( xc[--b] < yc[b] ) {

            for ( i = b; i && !xc[--i]; xc[i] = 9 ) {
            }
            --xc[i];
            xc[b] += 10;
        }
        xc[b] -= yc[b];
    }

    // Remove trailing zeros.
    for ( ; xc[--j] == 0; xc.pop() ) {
    }

    // Remove leading zeros and adjust exponent accordingly.
    for ( ; xc[0] == 0; xc.shift(), --ye ) {
    }

    /*
     * No need to check for Infinity as +x - +y != Infinity && -x - -y != Infinity
     * when neither x or y are Infinity.
     */

    // Underflow?
    if ( ye < MIN_EXP || !xc[0] ) {

        /*
         * Following IEEE 754 (2008) 6.3,
         * n - n = +0  but  n - n = -0 when rounding towards -Infinity.
         */
        if ( !xc[0] ) {
            y['s'] = ROUNDING_MODE == 3 ? -1 : 1;
        }

        // Result is zero.
        xc = [ye = 0];
    }

    return y['c'] = xc, y['e'] = ye, y;
};


/*
 *   n % 0 =  N
 *   n % N =  N
 *   0 % n =  0
 *  -0 % n = -0
 *   0 % 0 =  N
 *   0 % N =  N
 *   N % n =  N
 *   N % 0 =  N
 *   N % N =  N
 *
 * Return a new BigNumber whose value is the value of this BigNumber modulo
 * the value of BigNumber(y, b).
 */
P['modulo'] = P['mod'] = function ( y, b ) {
    var x = this,
        xc = x['c'],
        yc = ( id = 9, y = new BigNumber( y, b ) )['c'],
        i = x['s'],
        j = y['s'];

    // Is x or y NaN, or y zero?
    b = !i || !j || yc && !yc[0];

    if ( b || xc && !xc[0] ) {
        return new BigNumber( b ? NaN : x );
    }

    x['s'] = y['s'] = 1;
    b = y['cmp'](x) == 1;
    x['s'] = i, y['s'] = j;

    return b
      ? new BigNumber(x)
      : ( i = DECIMAL_PLACES, j = ROUNDING_MODE,
        DECIMAL_PLACES = 0, ROUNDING_MODE = 1,
          x = x['div'](y),
            DECIMAL_PLACES = i, ROUNDING_MODE = j,
              this['minus']( x['times'](y) ) );
};


/*
 * Return a new BigNumber whose value is the value of this BigNumber
 * negated, i.e. multiplied by -1.
 */
P['negated'] = P['neg'] = function () {
    var x = new BigNumber(this);

    return x['s'] = -x['s'] || null, x;
};


/*
 *  n + 0 = n
 *  n + N = N
 *  n + I = I
 *  0 + n = n
 *  0 + 0 = 0
 *  0 + N = N
 *  0 + I = I
 *  N + n = N
 *  N + 0 = N
 *  N + N = N
 *  N + I = N
 *  I + n = I
 *  I + 0 = I
 *  I + N = N
 *  I + I = I
 *
 * Return a new BigNumber whose value is the value of this BigNumber plus
 * the value of BigNumber(y, b).
 */
P['plus'] = P['add'] = function ( y, b ) {
    var d,
        x = this,
        a = x['s'];

    b = ( id = 10, y = new BigNumber( y, b ) )['s'];

    // Either NaN?
    if ( !a || !b ) {
        return new BigNumber(NaN);
    }

    // Signs differ?
    if ( a != b ) {
        return y['s'] = -b, x['minus'](y);
    }

    var xe = x['e'],
        xc = x['c'],
        ye = y['e'],
        yc = y['c'];

    if ( !xe || !ye ) {

        // Either Infinity?
        if ( !xc || !yc ) {

            // Return +-Infinity.
            return new BigNumber( a / 0 );
        }

        // Either zero?
        if ( !xc[0] || !yc[0] ) {

            // y is non-zero?
            return yc[0]
              ? y

              // x is non-zero?
              : new BigNumber( xc[0]
                ? x

                // Both are zero. Return zero.
                : a * 0 );
        }
    }

    // Prepend zeros to equalise exponents.
    // Note: Faster to use reverse then do unshifts.
    if ( xc = xc.slice(), a = xe - ye ) {
        d = a > 0 ? ( ye = xe, yc ) : ( a = -a, xc );

        for ( d.reverse(); a--; d.push(0) ) {
        }
        d.reverse();
    }

    // Point xc to the longer array.
    if ( xc.length - yc.length < 0 ) {
        d = yc, yc = xc, xc = d;
    }

    /*
     * Only start adding at yc.length - 1 as the
     * further digits of xc can be left as they are.
     */
    for ( a = yc.length, b = 0; a;
         b = ( xc[--a] = xc[a] + yc[a] + b ) / 10 ^ 0, xc[a] %= 10 ) {
    }

    // No need to check for zero, as +x + +y != 0 && -x + -y != 0

    if ( b ) {
        xc.unshift(b);

        // Overflow? (MAX_EXP + 1 possible)
        if ( ++ye > MAX_EXP ) {

            // Infinity.
            xc = ye = null;
        }
    }

     // Remove trailing zeros.
    for ( a = xc.length; xc[--a] == 0; xc.pop() ) {
    }

    return y['c'] = xc, y['e'] = ye, y;
};


/*
 * Return a BigNumber whose value is the value of this BigNumber raised to
 * the power e. If e is negative round according to DECIMAL_PLACES and
 * ROUNDING_MODE.
 *
 * e {number} Integer, -MAX_POWER to MAX_POWER inclusive.
 */
P['toPower'] = P['pow'] = function ( e ) {

    // e to integer, avoiding NaN or Infinity becoming 0.
    var i = e * 0 == 0 ? e | 0 : e,
        x = new BigNumber(this),
        y = new BigNumber(ONE);

    // Use Math.pow?
    // Pass +-Infinity for out of range exponents.
    if ( ( ( ( outOfRange = e < -MAX_POWER || e > MAX_POWER ) &&
      (i = e * 1 / 0) ) ||

         /*
          * Any exponent that fails the parse becomes NaN.
          *
          * Include 'e !== 0' because on Opera -0 == parseFloat(-0) is false,
          * despite -0 === parseFloat(-0) && -0 == parseFloat('-0') is true.
          */
         parse(e) != e && e !== 0 && !(i = NaN) ) &&

          // 'pow() exponent not an integer: {e}'
          // 'pow() exponent out of range: {e}'
          !ifExceptionsThrow( e, 'exponent', 'pow' ) ||

            // Pass zero to Math.pow, as any value to the power zero is 1.
            !i ) {

        // i is +-Infinity, NaN or 0.
        return new BigNumber( Math.pow( x['toS'](), i ) );
    }

    for ( i = i < 0 ? -i : i; ; ) {

        if ( i & 1 ) {
            y = y['times'](x);
        }
        i >>= 1;

        if ( !i ) {
            break;
        }
        x = x['times'](x);
    }

    return e < 0 ? ONE['div'](y) : y;
};


/*
 * Return a BigNumber whose value is the value of this BigNumber raised to
 * the power m modulo n.
 *
 * m {BigNumber} the value to take the power of
 * n {BigNumber} the value to modulo by
 */
P['powm'] = function ( m, n ) {
    return this.pow(m).mod(n);
};


/*
 * Return a new BigNumber whose value is the value of this BigNumber
 * rounded to a maximum of dp decimal places using rounding mode rm, or to
 * 0 and ROUNDING_MODE respectively if omitted.
 *
 * [dp] {number} Integer, 0 to MAX inclusive.
 * [rm] {number} Integer, 0 to 8 inclusive.
 */
P['round'] = function ( dp, rm ) {

    dp = dp == null || ( ( ( outOfRange = dp < 0 || dp > MAX ) ||
      parse(dp) != dp ) &&

        // 'round() decimal places out of range: {dp}'
        // 'round() decimal places not an integer: {dp}'
        !ifExceptionsThrow( dp, 'decimal places', 'round' ) )
          ? 0
          : dp | 0;

    rm = rm == null || ( ( ( outOfRange = rm < 0 || rm > 8 ) ||

      // Include '&& rm !== 0' because with Opera -0 == parseFloat(-0) is false.
      parse(rm) != rm && rm !== 0 ) &&

        // 'round() mode not an integer: {rm}'
        // 'round() mode out of range: {rm}'
        !ifExceptionsThrow( rm, 'mode', 'round' ) )
          ? ROUNDING_MODE
          : rm | 0;

    return setMode( this, dp, rm );
};


/*
 *  sqrt(-n) =  N
 *  sqrt( N) =  N
 *  sqrt(-I) =  N
 *  sqrt( I) =  I
 *  sqrt( 0) =  0
 *  sqrt(-0) = -0
 *
 * Return a new BigNumber whose value is the square root of the value of
 * this BigNumber, rounded according to DECIMAL_PLACES and ROUNDING_MODE.
 */
P['squareRoot'] = P['sqrt'] = function () {
    var n, r, re, t,
        x = this,
        c = x['c'],
        s = x['s'],
        e = x['e'],
        dp = DECIMAL_PLACES,
        rm = ROUNDING_MODE,
        half = new BigNumber('0.5');

    // Negative/NaN/Infinity/zero?
    if ( s !== 1 || !c || !c[0] ) {

        return new BigNumber( !s || s < 0 && ( !c || c[0] )
          ? NaN
          : c ? x : 1 / 0 );
    }

    // Initial estimate.
    s = Math.sqrt( x['toS']() );
    ROUNDING_MODE = 1;

    /*
      Math.sqrt underflow/overflow?
      Pass x to Math.sqrt as integer, then adjust the exponent of the result.
     */
    if ( s == 0 || s == 1 / 0 ) {
        n = c.join('');

        if ( !( n.length + e & 1 ) ) {
            n += '0';
        }
        r = new BigNumber( Math.sqrt(n) + '' );

        // r may still not be finite.
        if ( !r['c'] ) {
            r['c'] = [1];
        }
        r['e'] = ( ( ( e + 1 ) / 2 ) | 0 ) - ( e < 0 || e & 1 );
    } else {
        r = new BigNumber( n = s.toString() );
    }
    re = r['e'];
    s = re + ( DECIMAL_PLACES += 4 );

    if ( s < 3 ) {
        s = 0;
    }
    e = s;

    // Newton-Raphson iteration.
    for ( ; ; ) {
        t = r;
        r = half['times']( t['plus']( x['div'](t) ) );

        if ( t['c'].slice( 0, s ).join('') === r['c'].slice( 0, s ).join('') ) {
            c = r['c'];

            /*
              The exponent of r may here be one less than the final result
              exponent (re), e.g 0.0009999 (e-4) --> 0.001 (e-3), so adjust
              s so the rounding digits are indexed correctly.
             */
            s = s - ( n && r['e'] < re );

            /*
              The 4th rounding digit may be in error by -1 so if the 4 rounding
              digits are 9999 or 4999 (i.e. approaching a rounding boundary)
              continue the iteration.
             */
            if ( c[s] == 9 && c[s - 1] == 9 && c[s - 2] == 9 &&
                    ( c[s - 3] == 9 || n && c[s - 3] == 4 ) ) {

                /*
                  If 9999 on first run through, check to see if rounding up
                  gives the exact result as the nines may infinitely repeat.
                 */
                if ( n && c[s - 3] == 9 ) {
                    t = r['round']( dp, 0 );

                    if ( t['times'](t)['eq'](x) ) {
                        ROUNDING_MODE = rm;
                        DECIMAL_PLACES = dp;

                        return t;
                    }
                }
                DECIMAL_PLACES += 4;
                s += 4;
                n = '';
            } else {

                /*
                  If the rounding digits are null, 0000 or 5000, check for an
                  exact result. If not, then there are further digits so
                  increment the 1st rounding digit to ensure correct rounding.
                 */
                if ( !c[e] && !c[e - 1] && !c[e - 2] &&
                        ( !c[e - 3] || c[e - 3] == 5 ) ) {

                    // Truncate to the first rounding digit.
                    if ( c.length > e - 2 ) {
                        c.length = e - 2;
                    }

                    if ( !r['times'](r)['eq'](x) ) {

                        while ( c.length < e - 3 ) {
                            c.push(0);
                        }
                        c[e - 3]++;
                    }
                }
                ROUNDING_MODE = rm;
                rnd( r, DECIMAL_PLACES = dp, 10 );

                return r;
            }
        }
    }
};


/*
 *  n * 0 = 0
 *  n * N = N
 *  n * I = I
 *  0 * n = 0
 *  0 * 0 = 0
 *  0 * N = N
 *  0 * I = N
 *  N * n = N
 *  N * 0 = N
 *  N * N = N
 *  N * I = N
 *  I * n = I
 *  I * 0 = N
 *  I * N = N
 *  I * I = I
 *
 * Return a new BigNumber whose value is the value of this BigNumber times
 * the value of BigNumber(y, b).
 */
P['times'] = P['mul'] = function ( y, b ) {
    var c,
        x = this,
        xc = x['c'],
        yc = ( id = 11, y = new BigNumber( y, b ) )['c'],
        i = x['e'],
        j = y['e'],
        a = x['s'];

    y['s'] = a == ( b = y['s'] ) ? 1 : -1;

    // Either NaN/Infinity/0?
    if ( !i && ( !xc || !xc[0] ) || !j && ( !yc || !yc[0] ) ) {

        // Either NaN?
        return new BigNumber( !a || !b ||

          // x is 0 and y is Infinity  or  y is 0 and x is Infinity?
          xc && !xc[0] && !yc || yc && !yc[0] && !xc

            // Return NaN.
            ? NaN

            // Either Infinity?
            : !xc || !yc

              // Return +-Infinity.
              ? y['s'] / 0

              // x or y is 0. Return +-0.
              : y['s'] * 0 );
    }
    y['e'] = i + j;

    if ( ( a = xc.length ) < ( b = yc.length ) ) {
        c = xc, xc = yc, yc = c, j = a, a = b, b = j;
    }

    for ( j = a + b, c = []; j--; c.push(0) ) {
    }

    // Multiply!
    for ( i = b - 1; i > -1; i-- ) {

        for ( b = 0, j = a + i;
              j > i;
              b = c[j] + yc[i] * xc[j - i - 1] + b,
              c[j--] = b % 10 | 0,
              b = b / 10 | 0 ) {
        }

        if ( b ) {
            c[j] = ( c[j] + b ) % 10;
        }
    }

    b && ++y['e'];

    // Remove any leading zero.
    !c[0] && c.shift();

    // Remove trailing zeros.
    for ( j = c.length; !c[--j]; c.pop() ) {
    }

    // No zero check needed as only x * 0 == 0 etc.

    // Overflow?
    y['c'] = y['e'] > MAX_EXP

      // Infinity.
      ? ( y['e'] = null )

      // Underflow?
      : y['e'] < MIN_EXP

        // Zero.
        ? [ y['e'] = 0 ]

        // Neither.
        : c;

    return y;
};

/*
 * Return a buffer containing the 
 */
P['toBuffer'] = function ( opts ) {

    if (typeof opts === 'string') {
        if (opts !== 'mpint') return 'Unsupported Buffer representation';

        var abs = this.abs();
        var buf = abs.toBuffer({ size : 1, endian : 'big' });
        var len = buf.length === 1 && buf[0] === 0 ? 0 : buf.length;
        if (buf[0] & 0x80) len ++;

        var ret = new Buffer(4 + len);
        if (len > 0) buf.copy(ret, 4 + (buf[0] & 0x80 ? 1 : 0));
        if (buf[0] & 0x80) ret[4] = 0;

        ret[0] = len & (0xff << 24);
        ret[1] = len & (0xff << 16);
        ret[2] = len & (0xff << 8);
        ret[3] = len & (0xff << 0);

        // two's compliment for negative integers:
        var isNeg = this.lt(0);
        if (isNeg) {
            for (var i = 4; i < ret.length; i++) {
                ret[i] = 0xff - ret[i];
            }
        }
        ret[4] = (ret[4] & 0x7f) | (isNeg ? 0x80 : 0);
        if (isNeg) ret[ret.length - 1] ++;

        return ret;
    }

    if (!opts) opts = {};

    var endian = { 1 : 'big', '-1' : 'little' }[opts.endian]
        || opts.endian || 'big'
    ;

    var hex = this.toString(16);
    if (hex.charAt(0) === '-') throw new Error(
        'converting negative numbers to Buffers not supported yet'
    );

    var size = opts.size === 'auto' ? Math.ceil(hex.length / 2) : (opts.size || 1);

    var len = Math.ceil(hex.length / (2 * size)) * size;
    var buf = new Buffer(len);

    // zero-pad the hex string so the chunks are all `size` long
    while (hex.length < 2 * len) hex = '0' + hex;

    var hx = hex
        .split(new RegExp('(.{' + (2 * size) + '})'))
        .filter(function (s) { return s.length > 0 })
    ;

    hx.forEach(function (chunk, i) {
        for (var j = 0; j < size; j++) {
            var ix = i * size + (endian === 'big' ? j : size - j - 1);
            buf[ix] = parseInt(chunk.slice(j*2,j*2+2), 16);
        }
    });

    return buf;
};

/*
 * Return a string representing the value of this BigNumber in exponential
 * notation to dp fixed decimal places and rounded using ROUNDING_MODE if
 * necessary.
 *
 * [dp] {number} Integer, 0 to MAX inclusive.
 */
P['toExponential'] = P['toE'] = function ( dp ) {

    return format( this,
      ( dp == null || ( ( outOfRange = dp < 0 || dp > MAX ) ||

        /*
         * Include '&& dp !== 0' because with Opera -0 == parseFloat(-0) is
         * false, despite -0 == parseFloat('-0') && 0 == -0 being true.
         */
        parse(dp) != dp && dp !== 0 ) &&

          // 'toE() decimal places not an integer: {dp}'
          // 'toE() decimal places out of range: {dp}'
          !ifExceptionsThrow( dp, 'decimal places', 'toE' ) ) && this['c']
            ? this['c'].length - 1
            : dp | 0, 1 );
};


/*
 * Return a string representing the value of this BigNumber in normal
 * notation to dp fixed decimal places and rounded using ROUNDING_MODE if
 * necessary.
 *
 * Note: as with JavaScript's number type, (-0).toFixed(0) is '0',
 * but e.g. (-0.00001).toFixed(0) is '-0'.
 *
 * [dp] {number} Integer, 0 to MAX inclusive.
 */
P['toFixed'] = P['toF'] = function ( dp ) {
    var n, str, d,
        x = this;

    if ( !( dp == null || ( ( outOfRange = dp < 0 || dp > MAX ) ||
        parse(dp) != dp && dp !== 0 ) &&

        // 'toF() decimal places not an integer: {dp}'
        // 'toF() decimal places out of range: {dp}'
        !ifExceptionsThrow( dp, 'decimal places', 'toF' ) ) ) {
          d = x['e'] + ( dp | 0 );
    }

    n = TO_EXP_NEG, dp = TO_EXP_POS;
    TO_EXP_NEG = -( TO_EXP_POS = 1 / 0 );

    // Note: str is initially undefined.
    if ( d == str ) {
        str = x['toS']();
    } else {
        str = format( x, d );

        // (-0).toFixed() is '0', but (-0.1).toFixed() is '-0'.
        // (-0).toFixed(1) is '0.0', but (-0.01).toFixed(1) is '-0.0'.
        if ( x['s'] < 0 && x['c'] ) {

            // As e.g. -0 toFixed(3), will wrongly be returned as -0.000 from toString.
            if ( !x['c'][0] ) {
                str = str.replace(/^-/, '');

            // As e.g. -0.5 if rounded to -0 will cause toString to omit the minus sign.
            } else if ( str.indexOf('-') < 0 ) {
                str = '-' + str;
            }
        }
    }
    TO_EXP_NEG = n, TO_EXP_POS = dp;

    return str;
};


/*
 * Return a string array representing the value of this BigNumber as a
 * simple fraction with an integer numerator and an integer denominator.
 * The denominator will be a positive non-zero value less than or equal to
 * the specified maximum denominator. If a maximum denominator is not
 * specified, the denominator will be the lowest value necessary to
 * represent the number exactly.
 *
 * [maxD] {number|string|BigNumber} Integer >= 1 and < Infinity.
 */
P['toFraction'] = P['toFr'] = function ( maxD ) {
    var q, frac, n0, d0, d2, n, e,
        n1 = d0 = new BigNumber(ONE),
        d1 = n0 = new BigNumber('0'),
        x = this,
        xc = x['c'],
        exp = MAX_EXP,
        dp = DECIMAL_PLACES,
        rm = ROUNDING_MODE,
        d = new BigNumber(ONE);

    // NaN, Infinity.
    if ( !xc ) {
        return x['toS']();
    }

    e = d['e'] = xc.length - x['e'] - 1;

    // If max denominator is undefined or null...
    if ( maxD == null ||

         // or NaN...
         ( !( id = 12, n = new BigNumber(maxD) )['s'] ||

           // or less than 1, or Infinity...
           ( outOfRange = n['cmp'](n1) < 0 || !n['c'] ) ||

             // or not an integer...
             ( ERRORS && n['e'] < n['c'].length - 1 ) ) &&

               // 'toFr() max denominator not an integer: {maxD}'
               // 'toFr() max denominator out of range: {maxD}'
               !ifExceptionsThrow( maxD, 'max denominator', 'toFr' ) ||

                 // or greater than the maxD needed to specify the value exactly...
                 ( maxD = n )['cmp'](d) > 0 ) {

        // d is e.g. 10, 100, 1000, 10000... , n1 is 1.
        maxD = e > 0 ? d : n1;
    }

    MAX_EXP = 1 / 0;
    n = new BigNumber( xc.join('') );

    for ( DECIMAL_PLACES = 0, ROUNDING_MODE = 1; ; )  {
        q = n['div'](d);
        d2 = d0['plus']( q['times'](d1) );

        if ( d2['cmp'](maxD) == 1 ) {
            break;
        }

        d0 = d1, d1 = d2;

        n1 = n0['plus']( q['times']( d2 = n1 ) );
        n0 = d2;

        d = n['minus']( q['times']( d2 = d ) );
        n = d2;
    }

    d2 = maxD['minus'](d0)['div'](d1);
    n0 = n0['plus']( d2['times'](n1) );
    d0 = d0['plus']( d2['times'](d1) );

    n0['s'] = n1['s'] = x['s'];

    DECIMAL_PLACES = e * 2;
    ROUNDING_MODE = rm;

    // Determine which fraction is closer to x, n0 / d0 or n1 / d1?
    frac = n1['div'](d1)['minus'](x)['abs']()['cmp'](
      n0['div'](d0)['minus'](x)['abs']() ) < 1
      ? [ n1['toS'](), d1['toS']() ]
      : [ n0['toS'](), d0['toS']() ];

    return MAX_EXP = exp, DECIMAL_PLACES = dp, frac;
};


/*
 * Return a string representing the value of this BigNumber to sd significant
 * digits and rounded using ROUNDING_MODE if necessary.
 * If sd is less than the number of digits necessary to represent the integer
 * part of the value in normal notation, then use exponential notation.
 *
 * sd {number} Integer, 1 to MAX inclusive.
 */
P['toPrecision'] = P['toP'] = function ( sd ) {

    /*
     * ERRORS true: Throw if sd not undefined, null or an integer in range.
     * ERRORS false: Ignore sd if not a number or not in range.
     * Truncate non-integers.
     */
    return sd == null || ( ( ( outOfRange = sd < 1 || sd > MAX ) ||
      parse(sd) != sd ) &&

        // 'toP() precision not an integer: {sd}'
        // 'toP() precision out of range: {sd}'
        !ifExceptionsThrow( sd, 'precision', 'toP' ) )
          ? this['toS']()
          : format( this, --sd | 0, 2 );
};


/*
 * Return a string representing the value of this BigNumber in base b, or
 * base 10 if b is omitted. If a base is specified, including base 10,
 * round according to DECIMAL_PLACES and ROUNDING_MODE.
 * If a base is not specified, and this BigNumber has a positive exponent
 * that is equal to or greater than TO_EXP_POS, or a negative exponent equal
 * to or less than TO_EXP_NEG, return exponential notation.
 *
 * [b] {number} Integer, 2 to 64 inclusive.
 */
P['toString'] = P['toS'] = function ( b ) {
    var u, str, strL,
        x = this,
        xe = x['e'];

    // Infinity or NaN?
    if ( xe === null ) {
        str = x['s'] ? 'Infinity' : 'NaN';

    // Exponential format?
    } else if ( b === u && ( xe <= TO_EXP_NEG || xe >= TO_EXP_POS ) ) {
        return format( x, x['c'].length - 1, 1 );
    } else {
        str = x['c'].join('');

        // Negative exponent?
        if ( xe < 0 ) {

            // Prepend zeros.
            for ( ; ++xe; str = '0' + str ) {
            }
            str = '0.' + str;

        // Positive exponent?
        } else if ( strL = str.length, xe > 0 ) {

            if ( ++xe > strL ) {

                // Append zeros.
                for ( xe -= strL; xe-- ; str += '0' ) {
                }
            } else if ( xe < strL ) {
                str = str.slice( 0, xe ) + '.' + str.slice(xe);
            }

        // Exponent zero.
        } else {
            if ( u = str.charAt(0), strL > 1 ) {
                str = u + '.' + str.slice(1);

            // Avoid '-0'
            } else if ( u == '0' ) {
                return u;
            }
        }

        if ( b != null ) {

            if ( !( outOfRange = !( b >= 2 && b < 65 ) ) &&
              ( b == (b | 0) || !ERRORS ) ) {
                str = convert( str, b | 0, 10, x['s'] );

                // Avoid '-0'
                if ( str == '0' ) {
                    return str;
                }
            } else {

                // 'toS() base not an integer: {b}'
                // 'toS() base out of range: {b}'
                ifExceptionsThrow( b, 'base', 'toS' );
            }
        }

    }

    return x['s'] < 0 ? '-' + str : str;
};


/*
 * Return as toString, but do not accept a base argument.
 */
P['valueOf'] = function () {
    return this['toS']();
};


// Add aliases for BigDecimal methods.
//P['add'] = P['plus'];
//P['subtract'] = P['minus'];
//P['multiply'] = P['times'];
//P['divide'] = P['div'];
//P['remainder'] = P['mod'];
//P['compareTo'] = P['cmp'];
//P['negate'] = P['neg'];


// EXPORT
module.exports = BigNumber;

}).call(this,require(4).Buffer)
},{}],2:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// 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 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.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require(26);

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && (isNaN(value) || !isFinite(value))) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  //~~~I've managed to break Object.keys through screwy arguments passing.
  //   Converting to array solves the problem.
  if (isArguments(a)) {
    if (!isArguments(b)) {
      return false;
    }
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  try {
    var ka = objectKeys(a),
        kb = objectKeys(b),
        key, i;
  } catch (e) {//happens when one is a string literal and the other isn't
    return false;
  }
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{}],3:[function(require,module,exports){

},{}],4:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

var base64 = require(5)
var ieee754 = require(6)
var isArray = require(7)

exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation

var kMaxLength = 0x3fffffff

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use 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+.
 *
 * Note:
 *
 * - Implementation must support adding new properties to `Uint8Array` instances.
 *   Firefox 4-29 lacked support, fixed in Firefox 30+.
 *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *    incorrect length in some situations.
 *
 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
 * get the Object implementation, which is slower but will work correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = (function () {
  try {
    var buf = new ArrayBuffer(0)
    var arr = new Uint8Array(buf)
    arr.foo = function () { return 42 }
    return 42 === arr.foo() && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
})()

/**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
function Buffer (subject, encoding, noZero) {
  if (!(this instanceof Buffer))
    return new Buffer(subject, encoding, noZero)

  var type = typeof subject

  // Find the length
  var length
  if (type === 'number')
    length = subject > 0 ? subject >>> 0 : 0
  else if (type === 'string') {
    if (encoding === 'base64')
      subject = base64clean(subject)
    length = Buffer.byteLength(subject, encoding)
  } else if (type === 'object' && subject !== null) { // assume object is array-like
    if (subject.type === 'Buffer' && isArray(subject.data))
      subject = subject.data
    length = +subject.length > 0 ? Math.floor(+subject.length) : 0
  } else
    throw new TypeError('must start with number, buffer, array or string')

  if (this.length > kMaxLength)
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
      'size: 0x' + kMaxLength.toString(16) + ' bytes')

  var buf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Preferred: Return an augmented `Uint8Array` instance for best performance
    buf = Buffer._augment(new Uint8Array(length))
  } else {
    // Fallback: Return THIS instance of Buffer (created by `new`)
    buf = this
    buf.length = length
    buf._isBuffer = true
  }

  var i
  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
    // Speed optimization -- use set if we're copying from a typed array
    buf._set(subject)
  } else if (isArrayish(subject)) {
    // Treat array-ish objects as a byte array
    if (Buffer.isBuffer(subject)) {
      for (i = 0; i < length; i++)
        buf[i] = subject.readUInt8(i)
    } else {
      for (i = 0; i < length; i++)
        buf[i] = ((subject[i] % 256) + 256) % 256
    }
  } else if (type === 'string') {
    buf.write(subject, 0, encoding)
  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
    for (i = 0; i < length; i++) {
      buf[i] = 0
    }
  }

  return buf
}

Buffer.isBuffer = function (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
    throw new TypeError('Arguments must be Buffers')

  var x = a.length
  var y = b.length
  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
  if (i !== len) {
    x = a[i]
    y = b[i]
  }
  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'raw':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function (list, totalLength) {
  if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')

  if (list.length === 0) {
    return new Buffer(0)
  } else if (list.length === 1) {
    return list[0]
  }

  var i
  if (totalLength === undefined) {
    totalLength = 0
    for (i = 0; i < list.length; i++) {
      totalLength += list[i].length
    }
  }

  var buf = new Buffer(totalLength)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
}

Buffer.byteLength = function (str, encoding) {
  var ret
  str = str + ''
  switch (encoding || 'utf8') {
    case 'ascii':
    case 'binary':
    case 'raw':
      ret = str.length
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = str.length * 2
      break
    case 'hex':
      ret = str.length >>> 1
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8ToBytes(str).length
      break
    case 'base64':
      ret = base64ToBytes(str).length
      break
    default:
      ret = str.length
  }
  return ret
}

// pre-set for values that may exist in the future
Buffer.prototype.length = undefined
Buffer.prototype.parent = undefined

// toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function (encoding, start, end) {
  var loweredCase = false

  start = start >>> 0
  end = end === undefined || end === Infinity ? this.length : end >>> 0

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  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 'binary':
        return binarySlice(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
    }
  }
}

Buffer.prototype.equals = function (b) {
  if(!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max)
      str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b)
}

// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
  console.log('.get() is deprecated. Access using array indexes instead.')
  return this.readUInt8(offset)
}

// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
  console.log('.set() is deprecated. Access using array indexes instead.')
  return this.writeUInt8(v, offset)
}

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
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var byte = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(byte)) throw new Error('Invalid hex string')
    buf[offset + i] = byte
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf8ToBytes(string), buf, offset, length)
  return charsWritten
}

function asciiWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
  return charsWritten
}

function binaryWrite (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
  return charsWritten
}

function utf16leWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf16leToBytes(string), buf, offset, length)
  return charsWritten
}

Buffer.prototype.write = function (string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length
      length = undefined
    }
  } else {  // legacy
    var swap = encoding
    encoding = offset
    offset = length
    length = swap
  }

  offset = Number(offset) || 0
  var remaining = this.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase()

  var ret
  switch (encoding) {
    case 'hex':
      ret = hexWrite(this, string, offset, length)
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8Write(this, string, offset, length)
      break
    case 'ascii':
      ret = asciiWrite(this, string, offset, length)
      break
    case 'binary':
      ret = binaryWrite(this, string, offset, length)
      break
    case 'base64':
      ret = base64Write(this, string, offset, length)
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = utf16leWrite(this, string, offset, length)
      break
    default:
      throw new TypeError('Unknown encoding: ' + encoding)
  }
  return ret
}

Buffer.prototype.toJSON = function () {
  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) {
  var res = ''
  var tmp = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    if (buf[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
      tmp = ''
    } else {
      tmp += '%' + buf[i].toString(16)
    }
  }

  return res + decodeUtf8Char(tmp)
}

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])
  }
  return ret
}

function binarySlice (buf, start, end) {
  return asciiSlice(buf, start, end)
}

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 += toHex(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 (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

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    return Buffer._augment(this.subarray(start, end))
  } else {
    var sliceLen = end - start
    var newBuf = new Buffer(sliceLen, undefined, true)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
    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.readUInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function (offset, noAssert) {
  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 (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
}

Buffer.prototype.readInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80))
    return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function (offset, noAssert) {
  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 must be a Buffer instance')
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
}

Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = value
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = value
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = value
  return offset + 1
}

Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  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 (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  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 (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
  var source = this

  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (!target_start) target_start = 0

  // Copy 0 bytes; we're done
  if (end === start) return
  if (target.length === 0 || source.length === 0) return

  // Fatal error conditions
  if (end < start) throw new TypeError('sourceEnd < sourceStart')
  if (target_start < 0 || target_start >= target.length)
    throw new TypeError('targetStart out of bounds')
  if (start < 0 || start >= source.length) throw new TypeError('sourceStart out of bounds')
  if (end < 0 || end > source.length) throw new TypeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length)
    end = this.length
  if (target.length - target_start < end - start)
    end = target.length - target_start + start

  var len = end - start

  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < len; i++) {
      target[i + target_start] = this[i + start]
    }
  } else {
    target._set(this.subarray(start, start + len), target_start)
  }
}

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new TypeError('end < start')

  // Fill 0 bytes; we're done
  if (end === start) return
  if (this.length === 0) return

  if (start < 0 || start >= this.length) throw new TypeError('start out of bounds')
  if (end < 0 || end > this.length) throw new TypeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
}

/**
 * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
 * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
 */
Buffer.prototype.toArrayBuffer = function () {
  if (typeof Uint8Array !== 'undefined') {
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      return (new Buffer(this)).buffer
    } else {
      var buf = new Uint8Array(this.length)
      for (var i = 0, len = buf.length; i < len; i += 1) {
        buf[i] = this[i]
      }
      return buf.buffer
    }
  } else {
    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
  }
}

// HELPER FUNCTIONS
// ================

var BP = Buffer.prototype

/**
 * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
 */
Buffer._augment = function (arr) {
  arr.constructor = Buffer
  arr._isBuffer = true

  // save reference to original Uint8Array get/set methods before overwriting
  arr._get = arr.get
  arr._set = arr.set

  // deprecated, will be removed in node 0.13+
  arr.get = BP.get
  arr.set = BP.set

  arr.write = BP.write
  arr.toString = BP.toString
  arr.toLocaleString = BP.toString
  arr.toJSON = BP.toJSON
  arr.equals = BP.equals
  arr.compare = BP.compare
  arr.copy = BP.copy
  arr.slice = BP.slice
  arr.readUInt8 = BP.readUInt8
  arr.readUInt16LE = BP.readUInt16LE
  arr.readUInt16BE = BP.readUInt16BE
  arr.readUInt32LE = BP.readUInt32LE
  arr.readUInt32BE = BP.readUInt32BE
  arr.readInt8 = BP.readInt8
  arr.readInt16LE = BP.readInt16LE
  arr.readInt16BE = BP.readInt16BE
  arr.readInt32LE = BP.readInt32LE
  arr.readInt32BE = BP.readInt32BE
  arr.readFloatLE = BP.readFloatLE
  arr.readFloatBE = BP.readFloatBE
  arr.readDoubleLE = BP.readDoubleLE
  arr.readDoubleBE = BP.readDoubleBE
  arr.writeUInt8 = BP.writeUInt8
  arr.writeUInt16LE = BP.writeUInt16LE
  arr.writeUInt16BE = BP.writeUInt16BE
  arr.writeUInt32LE = BP.writeUInt32LE
  arr.writeUInt32BE = BP.writeUInt32BE
  arr.writeInt8 = BP.writeInt8
  arr.writeInt16LE = BP.writeInt16LE
  arr.writeInt16BE = BP.writeInt16BE
  arr.writeInt32LE = BP.writeInt32LE
  arr.writeInt32BE = BP.writeInt32BE
  arr.writeFloatLE = BP.writeFloatLE
  arr.writeFloatBE = BP.writeFloatBE
  arr.writeDoubleLE = BP.writeDoubleLE
  arr.writeDoubleBE = BP.writeDoubleBE
  arr.fill = BP.fill
  arr.inspect = BP.inspect
  arr.toArrayBuffer = BP.toArrayBuffer

  return arr
}

var INVALID_BASE64_RE = /[^+\/0-9A-z]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function isArrayish (subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
      subject && typeof subject === 'object' &&
      typeof subject.length === 'number'
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    var b = str.charCodeAt(i)
    if (b <= 0x7F) {
      byteArray.push(b)
    } else {
      var start = i
      if (b >= 0xD800 && b <= 0xDFFF) i++
      var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
      for (var j = 0; j < h.length; j++) {
        byteArray.push(parseInt(h[j], 16))
      }
    }
  }
  return byteArray
}

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) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(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
}

function decodeUtf8Char (str) {
  try {
    return decodeURIComponent(str)
  } catch (err) {
    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
  }
}

},{}],5:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

;(function (exports) {
	'use strict';

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

	var PLUS   = '+'.charCodeAt(0)
	var SLASH  = '/'.charCodeAt(0)
	var NUMBER = '0'.charCodeAt(0)
	var LOWER  = 'a'.charCodeAt(0)
	var UPPER  = 'A'.charCodeAt(0)

	function decode (elt) {
		var code = elt.charCodeAt(0)
		if (code === PLUS)
			return 62 // '+'
		if (code === SLASH)
			return 63 // '/'
		if (code < NUMBER)
			return -1 //no match
		if (code < NUMBER + 10)
			return code - NUMBER + 26 + 26
		if (code < UPPER + 26)
			return code - UPPER
		if (code < LOWER + 26)
			return code - LOWER + 26
	}

	function b64ToByteArray (b64) {
		var i, j, l, tmp, placeHolders, arr

		if (b64.length % 4 > 0) {
			throw new Error('Invalid string. Length must be a multiple of 4')
		}

		// the number of equal signs (place holders)
		// if there are two placeholders, than the two characters before it
		// represent one byte
		// if there is only one, then the three characters before it represent 2 bytes
		// this is just a cheap hack to not do indexOf twice
		var len = b64.length
		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0

		// base64 is 4/3 + up to two characters of the original data
		arr = new Arr(b64.length * 3 / 4 - placeHolders)

		// if there are placeholders, only get up to the last complete 4 chars
		l = placeHolders > 0 ? b64.length - 4 : b64.length

		var L = 0

		function push (v) {
			arr[L++] = v
		}

		for (i = 0, j = 0; i < l; i += 4, j += 3) {
			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
			push((tmp & 0xFF0000) >> 16)
			push((tmp & 0xFF00) >> 8)
			push(tmp & 0xFF)
		}

		if (placeHolders === 2) {
			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
			push(tmp & 0xFF)
		} else if (placeHolders === 1) {
			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
			push((tmp >> 8) & 0xFF)
			push(tmp & 0xFF)
		}

		return arr
	}

	function uint8ToBase64 (uint8) {
		var i,
			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
			output = "",
			temp, length

		function encode (num) {
			return lookup.charAt(num)
		}

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

		// go through the array every three bytes, we'll deal with trailing stuff later
		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
			output += tripletToBase64(temp)
		}

		// pad the end with zeros, but make sure to not forget the extra bytes
		switch (extraBytes) {
			case 1:
				temp = uint8[uint8.length - 1]
				output += encode(temp >> 2)
				output += encode((temp << 4) & 0x3F)
				output += '=='
				break
			case 2:
				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
				output += encode(temp >> 10)
				output += encode((temp >> 4) & 0x3F)
				output += encode((temp << 2) & 0x3F)
				output += '='
				break
		}

		return output
	}

	exports.toByteArray = b64ToByteArray
	exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

},{}],6:[function(require,module,exports){
exports.read = function(buffer, offset, isLE, mLen, nBytes) {
  var e, m,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      nBits = -7,
      i = isLE ? (nBytes - 1) : 0,
      d = isLE ? -1 : 1,
      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,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
      i = isLE ? 0 : (nBytes - 1),
      d = isLE ? 1 : -1,
      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;
};

},{}],7:[function(require,module,exports){

/**
 * isArray
 */

var isArray = Array.isArray;

/**
 * toString
 */

var str = Object.prototype.toString;

/**
 * Whether or not the given `val`
 * is an array.
 *
 * example:
 *
 *        isArray([]);
 *        // > true
 *        isArray(arguments);
 *        // > false
 *        isArray('');
 *        // > false
 *
 * @param {mixed} val
 * @return {bool}
 */

module.exports = isArray || function (val) {
  return !! val && '[object Array]' == str.call(val);
};

},{}],8:[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.

function EventEmitter() {
  this._events = this._events || {};
  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.
EventEmitter.defaultMaxListeners = 10;

// 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(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        len = arguments.length;
        args = new Array(len - 1);
        for (i = 1; i < len; i++)
          args[i - 1] = arguments[i];
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    len = arguments.length;
    args = new Array(len - 1);
    for (i = 1; i < len; i++)
      args[i - 1] = arguments[i];

    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    var m;
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.listenerCount = function(emitter, type) {
  var ret;
  if (!emitter._events || !emitter._events[type])
    ret = 0;
  else if (isFunction(emitter._events[type]))
    ret = 1;
  else
    ret = emitter._events[type].length;
  return ret;
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],9:[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
  }
}

},{}],10:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],11:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};

process.nextTick = (function () {
    var canSetImmediate = typeof window !== 'undefined'
    && window.setImmediate;
    var canMutationObserver = typeof window !== 'undefined'
    && window.MutationObserver;
    var canPost = typeof window !== 'undefined'
    && window.postMessage && window.addEventListener
    ;

    if (canSetImmediate) {
        return function (f) { return window.setImmediate(f) };
    }

    var queue = [];

    if (canMutationObserver) {
        var hiddenDiv = document.createElement("div");
        var observer = new MutationObserver(function () {
            var queueList = queue.slice();
            queue.length = 0;
            queueList.forEach(function (fn) {
                fn();
            });
        });

        observer.observe(hiddenDiv, { attributes: true });

        return function nextTick(fn) {
            if (!queue.length) {
                hiddenDiv.setAttribute('yes', 'no');
            }
            queue.push(fn);
        };
    }

    if (canPost) {
        window.addEventListener('message', function (ev) {
            var source = ev.source;
            if ((source === window || source === null) && ev.data === 'process-tick') {
                ev.stopPropagation();
                if (queue.length > 0) {
                    var fn = queue.shift();
                    fn();
                }
            }
        }, true);

        return function nextTick(fn) {
            queue.push(fn);
            window.postMessage('process-tick', '*');
        };
    }

    return function nextTick(fn) {
        setTimeout(fn, 0);
    };
})();

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};

},{}],12:[function(require,module,exports){
module.exports = require(13)

},{}],13:[function(require,module,exports){
(function (process){
// 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.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require(18);
util.inherits = require(9);
/*</replacement>*/

var Readable = require(15);
var Writable = require(17);

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  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);
}

// 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.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require(11))
},{}],14:[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.

module.exports = PassThrough;

var Transform = require(16);

/*<replacement>*/
var util = require(18);
util.inherits = require(9);
/*</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);
};

},{}],15:[function(require,module,exports){
(function (process){
// 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 = Readable;

/*<replacement>*/
var isArray = require(10);
/*</replacement>*/


/*<replacement>*/
var Buffer = require(4).Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require(8).EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require(23);

/*<replacement>*/
var util = require(18);
util.inherits = require(9);
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  options = options || {};

  // 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;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = false;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // In streams that never have any data, and do push(null) right away,
  // the consumer can miss the 'end' event if they do some I/O before
  // consuming the stream.  So, we don't emit('end') until some reading
  // happens.
  this.calledRead = false;

  // 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, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write 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;


  // 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;

  // 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';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // 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(24).StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// 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;

  if (typeof chunk === 'string' && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null || chunk === undefined) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) {
        state.buffer.unshift(chunk);
      } else {
        state.reading = false;
        state.buffer.push(chunk);
      }

      if (state.needReadable)
        emitReadable(stream);

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// 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);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require(24).StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  var state = this._readableState;
  state.calledRead = true;
  var nOrig = n;
  var ret;

  if (typeof n !== 'number' || 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)) {
    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) {
    ret = null;

    // In cases where the decoder did not receive enough data
    // to produce a full chunk, then immediately received an
    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
    // howMuchToRead will see this and coerce the amount to
    // read to zero (because it's looking at the length of the
    // first <Buffer > in state.buffer), and we'll end up here.
    //
    // This can only happen via state.decoder -- no other venue
    // exists for pushing a zero-length chunk into state.buffer
    // and triggering this behavior. In this case, we return our
    // remaining data and end the stream, if appropriate.
    if (state.length > 0 && state.decoder) {
      ret = fromList(n, state);
      state.length -= ret.length;
    }

    if (state.length === 0)
      endReadable(this);

    return ret;
  }

  // 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;

  // if we currently have less than the highWaterMark, then also read some
  if (state.length - n <= state.highWaterMark)
    doRead = true;

  // 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;

  if (doRead) {
    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 called its callback synchronously, then `reading`
  // will be false, and we need to re-evaluate how much data we
  // can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we happened to read() exactly the remaining amount in the
  // buffer, and the EOF has been seen at this point, then make sure
  // that we emit 'end' on the very next tick.
  if (state.ended && !state.endEmitted && state.length === 0)
    endReadable(this);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // if we've ended and we have some data left, then emit
  // 'readable' now to make sure it gets picked up.
  if (state.length > 0)
    emitReadable(stream);
  else
    endReadable(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)
    return;

  state.emittedReadable = true;
  if (state.sync)
    process.nextTick(function() {
      emitReadable_(stream);
    });
  else
    emitReadable_(stream);
}

function emitReadable_(stream) {
  stream.emit('readable');
}


// 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;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    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('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;

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    if (readable !== src) return;
    cleanup();
  }

  function 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);

  function 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', cleanup);

    // 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 (!dest._writableState || dest._writableState.needDrain)
      ondrain();
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function 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) {
    // the handler that waits for readable events after all
    // the data gets sucked out in flow.
    // This would be easier to follow with a .once() handler
    // in flow(), but that is too slow.
    this.on('readable', pipeOnReadable);

    state.flowing = true;
    process.nextTick(function() {
      flow(src);
    });
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var dest = this;
    var state = src._readableState;
    state.awaitDrain--;
    if (state.awaitDrain === 0)
      flow(src);
  };
}

function flow(src) {
  var state = src._readableState;
  var chunk;
  state.awaitDrain = 0;

  function write(dest, i, list) {
    var written = dest.write(chunk);
    if (false === written) {
      state.awaitDrain++;
    }
  }

  while (state.pipesCount && null !== (chunk = src.read())) {

    if (state.pipesCount === 1)
      write(state.pipes, 0, null);
    else
      forEach(state.pipes, write);

    src.emit('data', chunk);

    // if anyone needs a drain, then we have to wait for that.
    if (state.awaitDrain > 0)
      return;
  }

  // if every destination was unpiped, either before entering this
  // function, or in the while loop, then stop flowing.
  //
  // NB: This is a pretty rare edge case.
  if (state.pipesCount === 0) {
    state.flowing = false;

    // if there were data event listeners added, then switch to old mode.
    if (EE.listenerCount(src, 'data') > 0)
      emitDataEvents(src);
    return;
  }

  // at this point, no one needed a drain, so we just ran out of data
  // on the next readable event, start it over again.
  state.ranOut = true;
}

function pipeOnReadable() {
  if (this._readableState.ranOut) {
    this._readableState.ranOut = false;
    flow(this);
  }
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // 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;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    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;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  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' && !this._readableState.flowing)
    emitDataEvents(this);

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        this.read(0);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// 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() {
  emitDataEvents(this);
  this.read(0);
  this.emit('resume');
};

Readable.prototype.pause = function() {
  emitDataEvents(this, true);
  this.emit('pause');
};

function emitDataEvents(stream, startPaused) {
  var state = stream._readableState;

  if (state.flowing) {
    // https://github.com/isaacs/readable-stream/issues/16
    throw new Error('Cannot switch to old mode now.');
  }

  var paused = startPaused || false;
  var readable = false;

  // convert to an old-style stream.
  stream.readable = true;
  stream.pipe = Stream.prototype.pipe;
  stream.on = stream.addListener = Stream.prototype.on;

  stream.on('readable', function() {
    readable = true;

    var c;
    while (!paused && (null !== (c = stream.read())))
      stream.emit('data', c);

    if (c === null) {
      readable = false;
      stream._readableState.needReadable = true;
    }
  });

  stream.pause = function() {
    paused = true;
    this.emit('pause');
  };

  stream.resume = function() {
    paused = false;
    if (readable)
      process.nextTick(function() {
        stream.emit('readable');
      });
    else
      this.read(0);
    this.emit('resume');
  };

  // now make it start, just in case it hadn't already.
  stream.emit('readable');
}

// 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 state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    //if (state.objectMode && util.isNullOrUndefined(chunk))
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.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 (typeof stream[i] === 'function' &&
        typeof this[i] === 'undefined') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// 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.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  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.calledRead) {
    state.ended = true;
    process.nextTick(function() {
      // 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 forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

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(11))
},{}],16:[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.

module.exports = Transform;

var Duplex = require(13);

/*<replacement>*/
var util = require(18);
util.inherits = require(9);
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(options, stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (data !== null && data !== undefined)
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  var ts = this._transformState = new TransformState(options, this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // 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;

  this.once('finish', function() {
    if ('function' === typeof this._flush)
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

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('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;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var rs = stream._readableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{}],17:[function(require,module,exports){
(function (process){
// 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, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require(4).Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require(18);
util.inherits = require(9);
/*</replacement>*/

var Stream = require(23);

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  options = options || {};

  // 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;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  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;

  // 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;

  // 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, becuase 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.buffer = [];

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require(13);

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  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, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (typeof cb !== 'function')
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb))
    ret = writeOrBuffer(this, state, chunk, encoding, cb);

  return ret;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      typeof chunk === 'string') {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// 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, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  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.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      cb(er);
    });
  else
    cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

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(stream, state);

    if (!finished && !state.bufferProcessing && state.buffer.length)
      clearBuffer(stream, state);

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  cb();
  if (finished)
    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;

  for (var c = 0; c < state.buffer.length; c++) {
    var entry = state.buffer[c];
    var chunk = entry.chunk;
    var encoding = entry.encoding;
    var cb = entry.callback;
    var len = state.objectMode ? 1 : chunk.length;

    doWrite(stream, state, len, chunk, encoding, cb);

    // 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) {
      c++;
      break;
    }
  }

  state.bufferProcessing = false;
  if (c < state.buffer.length)
    state.buffer = state.buffer.slice(c);
  else
    state.buffer.length = 0;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));
};

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 (typeof chunk !== 'undefined' && chunk !== null)
    this.write(chunk, encoding);

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    state.finished = true;
    stream.emit('finish');
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require(11))
},{}],18:[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(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;

function isBuffer(arg) {
  return Buffer.isBuffer(arg);
}
exports.isBuffer = isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}
}).call(this,require(4).Buffer)
},{}],19:[function(require,module,exports){
module.exports = require(14)

},{}],20:[function(require,module,exports){
var Stream = require(23); // hack to fix a circular dependency issue when used with browserify
exports = module.exports = require(15);
exports.Stream = Stream;
exports.Readable = exports;
exports.Writable = require(17);
exports.Duplex = require(13);
exports.Transform = require(16);
exports.PassThrough = require(14);

},{}],21:[function(require,module,exports){
module.exports = require(16)

},{}],22:[function(require,module,exports){
module.exports = require(17)

},{}],23:[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(8).EventEmitter;
var inherits = require(9);

inherits(Stream, EE);
Stream.Readable = require(20);
Stream.Writable = require(22);
Stream.Duplex = require(12);
Stream.Transform = require(21);
Stream.PassThrough = require(19);

// 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;
};

},{}],24:[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 Buffer = require(4).Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(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 assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{}],25:[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';
}
},{}],26:[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(25);

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(9);

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(11),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],27:[function(require,module,exports){
var indexOf = require(28);

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);

    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.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;
};

},{}],28:[function(require,module,exports){

var indexOf = [].indexOf;

module.exports = function(arr, obj){
  if (indexOf) return arr.indexOf(obj);
  for (var i = 0; i < arr.length; ++i) {
    if (arr[i] === obj) return i;
  }
  return -1;
};
},{}],29:[function(require,module,exports){
(function (Buffer){
var createHash = require(112)

var md5 = require(33)
var rmd160 = require(110)
var Transform = require(23).Transform;
var inherits = require(26).inherits

module.exports = function (alg) {
  if('md5' === alg) return new HashNoConstructor(md5)
  if('rmd160' === alg) return new HashNoConstructor(rmd160)
  return new Hash(createHash(alg))
}
inherits(HashNoConstructor, Transform)

function HashNoConstructor(hash) {
  Transform.call(this);
  this._hash = hash
  this.buffers = []
}

HashNoConstructor.prototype._transform = function (data, _, done) {
  this.buffers.push(data)
  done()
}
HashNoConstructor.prototype._flush = function (done) {
  var buf = Buffer.concat(this.buffers)
  var r = this._hash(buf)
  this.buffers = null
  this.push(r)
  done()
}
HashNoConstructor.prototype.update = function (data, enc) {
  this.write(data, enc)
  return this
}

HashNoConstructor.prototype.digest = function (enc) {
  this.end()
  var outData = new Buffer('')
  var chunk
  while ((chunk = this.read())) {
    outData = Buffer.concat([outData, chunk])
  }
  if (enc) {
    outData = outData.toString(enc)
  }
  return outData
}

inherits(Hash, Transform)

function Hash(hash) {
  Transform.call(this);
  this._hash = hash
}

Hash.prototype._transform = function (data, _, done) {
  this._hash.update(data)
  done()
}
Hash.prototype._flush = function (done) {
  this.push(this._hash.digest())
  this._hash = null
  done()
}
Hash.prototype.update = function (data, enc) {
  this.write(data, enc)
  return this
}

Hash.prototype.digest = function (enc) {
  this.end()
  var outData = new Buffer('')
  var chunk
  while ((chunk = this.read())) {
    outData = Buffer.concat([outData, chunk])
  }
  if (enc) {
    outData = outData.toString(enc)
  }
  return outData
}

}).call(this,require(4).Buffer)
},{}],30:[function(require,module,exports){
(function (Buffer){
var createHash = require(29)
var Transform = require(23).Transform;
var inherits = require(26).inherits
var zeroBuffer = new Buffer(128)
zeroBuffer.fill(0)

module.exports = Hmac
inherits(Hmac, Transform)
function Hmac (alg, key) {
  if(!(this instanceof Hmac)) return new Hmac(alg, key)

  Transform.call(this)
  this._opad = opad
  this._alg = alg

  var blocksize = (alg === 'sha512') ? 128 : 64

  key = this._key = !Buffer.isBuffer(key) ? new Buffer(key) : key

  if(key.length > blocksize) {
    key = createHash(alg).update(key).digest()
  } else if(key.length < blocksize) {
    key = Buffer.concat([key, zeroBuffer], blocksize)
  }

  var ipad = this._ipad = new Buffer(blocksize)
  var opad = this._opad = new Buffer(blocksize)

  for(var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  this._hash = createHash(alg).update(ipad)
}

Hmac.prototype.update = function (data, enc) {
  this.write(data, enc)
  return this
}

Hmac.prototype._transform = function (data, _, next) {
  this._hash.update(data)
  next()
}

Hmac.prototype._flush = function (next) {
  var h = this._hash.digest()
  this.push(createHash(this._alg).update(this._opad).update(h).digest())
  next()
}

Hmac.prototype.digest = function (enc) {
  this.end()
  var outData = new Buffer('')
  var chunk
  while ((chunk = this.read())) {
    outData = Buffer.concat([outData, chunk])
  }
  if (enc) {
    outData = outData.toString(enc)
  }
  return outData
}


}).call(this,require(4).Buffer)
},{}],31:[function(require,module,exports){
(function (Buffer){
var intSize = 4;
var zeroBuffer = new Buffer(intSize); zeroBuffer.fill(0);
var chrsz = 8;

function toArray(buf, bigEndian) {
  if ((buf.length % intSize) !== 0) {
    var len = buf.length + (intSize - (buf.length % intSize));
    buf = Buffer.concat([buf, zeroBuffer], len);
  }

  var arr = [];
  var fn = bigEndian ? buf.readInt32BE : buf.readInt32LE;
  for (var i = 0; i < buf.length; i += intSize) {
    arr.push(fn.call(buf, i));
  }
  return arr;
}

function toBuffer(arr, size, bigEndian) {
  var buf = new Buffer(size);
  var fn = bigEndian ? buf.writeInt32BE : buf.writeInt32LE;
  for (var i = 0; i < arr.length; i++) {
    fn.call(buf, arr[i], i * 4, true);
  }
  return buf;
}

function hash(buf, fn, hashSize, bigEndian) {
  if (!Buffer.isBuffer(buf)) buf = new Buffer(buf);
  var arr = fn(toArray(buf, bigEndian), buf.length * chrsz);
  return toBuffer(arr, hashSize, bigEndian);
}

module.exports = { hash: hash };

}).call(this,require(4).Buffer)
},{}],32:[function(require,module,exports){
(function (Buffer){
var rng = require(117)

function error () {
  var m = [].slice.call(arguments).join(' ')
  throw new Error([
    m,
    'we accept pull requests',
    'http://github.com/dominictarr/crypto-browserify'
    ].join('\n'))
}

exports.createHash = require(29)

exports.createHmac = require(30)

exports.randomBytes = function(size, callback) {
  if (callback && callback.call) {
    try {
      callback.call(this, undefined, new Buffer(rng(size)))
    } catch (err) { callback(err) }
  } else {
    return new Buffer(rng(size))
  }
}

function each(a, f) {
  for(var i in a)
    f(a[i], i)
}

exports.getHashes = function () {
  return ['sha1', 'sha256', 'sha512', 'md5', 'rmd160']
}

var p = require(116)(exports)
exports.pbkdf2 = p.pbkdf2
exports.pbkdf2Sync = p.pbkdf2Sync
require(39)(exports, module.exports);
require(53)(module.exports, exports);
require(104)(exports, module.exports);

// the least I can do is make error messages for the rest of the node.js/crypto api.
each([
  'createCredentials',
], function (name) {
  exports[name] = function () {
    error('sorry,', name, 'is not implemented yet')
  }
})

}).call(this,require(4).Buffer)
},{}],33:[function(require,module,exports){
/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

var helpers = require(31);

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

module.exports = function md5(buf) {
  return helpers.hash(buf, core_md5, 16);
};

},{}],34:[function(require,module,exports){
(function (Buffer){

module.exports = function (crypto, password, keyLen, ivLen) {
  keyLen = keyLen/8;
  ivLen = ivLen || 0;
  var ki = 0;
  var ii = 0;
  var key = new Buffer(keyLen);
  var iv = new Buffer(ivLen);
  var addmd = 0;
  var md, md_buf;
  var i;
  while (true) {
    md = crypto.createHash('md5');
    if(addmd++ > 0) {
       md.update(md_buf);
    }
    md.update(password);
    md_buf = md.digest();
    i = 0;
    if(keyLen > 0) {
      while(true) {
        if(keyLen === 0) {
          break;
        }
        if(i === md_buf.length) {
          break;
        }
        key[ki++] = md_buf[i];
        keyLen--;
        i++;
       }
    }
    if(ivLen > 0 && i !== md_buf.length) {
      while(true) {
        if(ivLen === 0) {
          break;
        }
        if(i === md_buf.length) {
          break;
        }
       iv[ii++] = md_buf[i];
       ivLen--;
       i++;
     }
   }
   if(keyLen === 0 && ivLen === 0) {
      break;
    }
  }
  for(i=0;i<md_buf.length;i++) {
    md_buf[i] = 0;
  }
  return {
    key: key,
    iv: iv
  };
};
}).call(this,require(4).Buffer)
},{}],35:[function(require,module,exports){
(function (Buffer){
var uint_max = Math.pow(2, 32);
function fixup_uint32(x) {
    var ret, x_pos;
    ret = x > uint_max || x < 0 ? (x_pos = Math.abs(x) % uint_max, x < 0 ? uint_max - x_pos : x_pos) : x;
    return ret;
}
function scrub_vec(v) {
  var i, _i, _ref;
  for (i = _i = 0, _ref = v.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
    v[i] = 0;
  }
  return false;
}

function Global() {
  var i;
  this.SBOX = [];
  this.INV_SBOX = [];
  this.SUB_MIX = (function() {
    var _i, _results;
    _results = [];
    for (i = _i = 0; _i < 4; i = ++_i) {
      _results.push([]);
    }
    return _results;
  })();
  this.INV_SUB_MIX = (function() {
    var _i, _results;
    _results = [];
    for (i = _i = 0; _i < 4; i = ++_i) {
      _results.push([]);
    }
    return _results;
  })();
  this.init();
  this.RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
}

Global.prototype.init = function() {
  var d, i, sx, t, x, x2, x4, x8, xi, _i;
  d = (function() {
    var _i, _results;
    _results = [];
    for (i = _i = 0; _i < 256; i = ++_i) {
      if (i < 128) {
        _results.push(i << 1);
      } else {
        _results.push((i << 1) ^ 0x11b);
      }
    }
    return _results;
  })();
  x = 0;
  xi = 0;
  for (i = _i = 0; _i < 256; i = ++_i) {
    sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4);
    sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63;
    this.SBOX[x] = sx;
    this.INV_SBOX[sx] = x;
    x2 = d[x];
    x4 = d[x2];
    x8 = d[x4];
    t = (d[sx] * 0x101) ^ (sx * 0x1010100);
    this.SUB_MIX[0][x] = (t << 24) | (t >>> 8);
    this.SUB_MIX[1][x] = (t << 16) | (t >>> 16);
    this.SUB_MIX[2][x] = (t << 8) | (t >>> 24);
    this.SUB_MIX[3][x] = t;
    t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100);
    this.INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8);
    this.INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16);
    this.INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24);
    this.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 true;
};

var G = new Global();


AES.blockSize = 4 * 4;

AES.prototype.blockSize = AES.blockSize;

AES.keySize = 256 / 8;

AES.prototype.keySize = AES.keySize;

AES.ivSize = AES.blockSize;

AES.prototype.ivSize = AES.ivSize;

 function bufferToArray(buf) {
  var len = buf.length/4;
  var out = new Array(len);
  var i = -1;
  while (++i < len) {
    out[i] = buf.readUInt32BE(i * 4);
  }
  return out;
 }
function AES(key) {
  this._key = bufferToArray(key);
  this._doReset();
}

AES.prototype._doReset = function() {
  var invKsRow, keySize, keyWords, ksRow, ksRows, t, _i, _j;
  keyWords = this._key;
  keySize = keyWords.length;
  this._nRounds = keySize + 6;
  ksRows = (this._nRounds + 1) * 4;
  this._keySchedule = [];
  for (ksRow = _i = 0; 0 <= ksRows ? _i < ksRows : _i > ksRows; ksRow = 0 <= ksRows ? ++_i : --_i) {
    this._keySchedule[ksRow] = ksRow < keySize ? keyWords[ksRow] : (t = this._keySchedule[ksRow - 1], (ksRow % 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 ^= G.RCON[(ksRow / keySize) | 0] << 24) : keySize > 6 && ksRow % keySize === 4 ? t = (G.SBOX[t >>> 24] << 24) | (G.SBOX[(t >>> 16) & 0xff] << 16) | (G.SBOX[(t >>> 8) & 0xff] << 8) | G.SBOX[t & 0xff] : void 0, this._keySchedule[ksRow - keySize] ^ t);
  }
  this._invKeySchedule = [];
  for (invKsRow = _j = 0; 0 <= ksRows ? _j < ksRows : _j > ksRows; invKsRow = 0 <= ksRows ? ++_j : --_j) {
    ksRow = ksRows - invKsRow;
    t = this._keySchedule[ksRow - (invKsRow % 4 ? 0 : 4)];
    this._invKeySchedule[invKsRow] = invKsRow < 4 || ksRow <= 4 ? t : G.INV_SUB_MIX[0][G.SBOX[t >>> 24]] ^ G.INV_SUB_MIX[1][G.SBOX[(t >>> 16) & 0xff]] ^ G.INV_SUB_MIX[2][G.SBOX[(t >>> 8) & 0xff]] ^ G.INV_SUB_MIX[3][G.SBOX[t & 0xff]];
  }
  return true;
};

AES.prototype.encryptBlock = function(M) {
  M = bufferToArray(new Buffer(M));
  var out = this._doCryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX);
  var buf = new Buffer(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 = bufferToArray(new Buffer(M));
  var temp = [M[3], M[1]];
  M[1] = temp[0];
  M[3] = temp[1];
  var out = this._doCryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX);
  var buf = new Buffer(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() {
  scrub_vec(this._keySchedule);
  scrub_vec(this._invKeySchedule);
  scrub_vec(this._key);
};

AES.prototype._doCryptBlock = function(M, keySchedule, SUB_MIX, SBOX) {
  var ksRow, round, s0, s1, s2, s3, t0, t1, t2, t3, _i, _ref;

  s0 = M[0] ^ keySchedule[0];
  s1 = M[1] ^ keySchedule[1];
  s2 = M[2] ^ keySchedule[2];
  s3 = M[3] ^ keySchedule[3];
  ksRow = 4;
  for (round = _i = 1, _ref = this._nRounds; 1 <= _ref ? _i < _ref : _i > _ref; round = 1 <= _ref ? ++_i : --_i) {
    t0 = SUB_MIX[0][s0 >>> 24] ^ SUB_MIX[1][(s1 >>> 16) & 0xff] ^ SUB_MIX[2][(s2 >>> 8) & 0xff] ^ SUB_MIX[3][s3 & 0xff] ^ keySchedule[ksRow++];
    t1 = SUB_MIX[0][s1 >>> 24] ^ SUB_MIX[1][(s2 >>> 16) & 0xff] ^ SUB_MIX[2][(s3 >>> 8) & 0xff] ^ SUB_MIX[3][s0 & 0xff] ^ keySchedule[ksRow++];
    t2 = SUB_MIX[0][s2 >>> 24] ^ SUB_MIX[1][(s3 >>> 16) & 0xff] ^ SUB_MIX[2][(s0 >>> 8) & 0xff] ^ SUB_MIX[3][s1 & 0xff] ^ keySchedule[ksRow++];
    t3 = SUB_MIX[0][s3 >>> 24] ^ SUB_MIX[1][(s0 >>> 16) & 0xff] ^ SUB_MIX[2][(s1 >>> 8) & 0xff] ^ SUB_MIX[3][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++];
  return [
    fixup_uint32(t0),
    fixup_uint32(t1),
    fixup_uint32(t2),
    fixup_uint32(t3)
  ];

};




  exports.AES = AES;
}).call(this,require(4).Buffer)
},{}],36:[function(require,module,exports){
(function (Buffer){
var Transform = require(23).Transform;
var inherits = require(46);

module.exports = CipherBase;
inherits(CipherBase, Transform);
function CipherBase() {
  Transform.call(this);
}
CipherBase.prototype.update = function (data, inputEnd, outputEnc) {
  this.write(data, inputEnd);
  var outData = new Buffer('');
  var chunk;
  while ((chunk = this.read())) {
    outData = Buffer.concat([outData, chunk]);
  }
  if (outputEnc) {
    outData = outData.toString(outputEnc);
  }
  return outData;
};
CipherBase.prototype.final = function (outputEnc) {
  this.end();
  var outData = new Buffer('');
  var chunk;
  while ((chunk = this.read())) {
    outData = Buffer.concat([outData, chunk]);
  }
  if (outputEnc) {
    outData = outData.toString(outputEnc);
  }
  return outData;
};
}).call(this,require(4).Buffer)
},{}],37:[function(require,module,exports){
(function (Buffer){
var aes = require(35);
var Transform = require(36);
var inherits = require(46);
var modes = require(40);
var StreamCipher = require(47);
var ebtk = require(34);

inherits(Decipher, Transform);
function Decipher(mode, key, iv) {
  if (!(this instanceof Decipher)) {
    return new Decipher(mode, key, iv);
  }
  Transform.call(this);
  this._cache = new Splitter();
  this._last = void 0;
  this._cipher = new aes.AES(key);
  this._prev = new Buffer(iv.length);
  iv.copy(this._prev);
  this._mode = mode;
}
Decipher.prototype._transform = function (data, _, next) {
  this._cache.add(data);
  var chunk;
  var thing;
  while ((chunk = this._cache.get())) {
    thing = this._mode.decrypt(this, chunk);
    this.push(thing);
  }
  next();
};
Decipher.prototype._flush = function (next) {
  var chunk = this._cache.flush();
  if (!chunk) {
    return next;
  }

  this.push(unpad(this._mode.decrypt(this, chunk)));

  next();
};

function Splitter() {
   if (!(this instanceof Splitter)) {
    return new Splitter();
  }
  this.cache = new Buffer('');
}
Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data]);
};

Splitter.prototype.get = function () {
  if (this.cache.length > 16) {
    var 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 === 16) {
    return;
  }
  return last.slice(0, 16 - padded);
}

var modelist = {
  ECB: require(44),
  CBC: require(41),
  CFB: require(42),
  OFB: require(45),
  CTR: require(43)
};

module.exports = function (crypto) {
  function createDecipheriv(suite, password, iv) {
    var config = modes[suite];
    if (!config) {
      throw new TypeError('invalid suite type');
    }
    if (typeof iv === 'string') {
      iv = new Buffer(iv);
    }
    if (typeof password === 'string') {
      password = new Buffer(password);
    }
    if (password.length !== config.key/8) {
      throw new TypeError('invalid key length ' + password.length);
    }
    if (iv.length !== config.iv) {
      throw new TypeError('invalid iv length ' + iv.length);
    }
    if (config.type === 'stream') {
      return new StreamCipher(modelist[config.mode], password, iv, true);
    }
    return new Decipher(modelist[config.mode], password, iv);
  }

  function createDecipher (suite, password) {
    var config = modes[suite];
    if (!config) {
      throw new TypeError('invalid suite type');
    }
    var keys = ebtk(crypto, password, config.key, config.iv);
    return createDecipheriv(suite, keys.key, keys.iv);
  }
  return {
    createDecipher: createDecipher,
    createDecipheriv: createDecipheriv
  };
};

}).call(this,require(4).Buffer)
},{}],38:[function(require,module,exports){
(function (Buffer){
var aes = require(35);
var Transform = require(36);
var inherits = require(46);
var modes = require(40);
var ebtk = require(34);
var StreamCipher = require(47);
inherits(Cipher, Transform);
function Cipher(mode, key, iv) {
  if (!(this instanceof Cipher)) {
    return new Cipher(mode, key, iv);
  }
  Transform.call(this);
  this._cache = new Splitter();
  this._cipher = new aes.AES(key);
  this._prev = new Buffer(iv.length);
  iv.copy(this._prev);
  this._mode = mode;
}
Cipher.prototype._transform = function (data, _, next) {
  this._cache.add(data);
  var chunk;
  var thing;
  while ((chunk = this._cache.get())) {
    thing = this._mode.encrypt(this, chunk);
    this.push(thing);
  }
  next();
};
Cipher.prototype._flush = function (next) {
  var chunk = this._cache.flush();
  this.push(this._mode.encrypt(this, chunk));
  this._cipher.scrub();
  next();
};


function Splitter() {
   if (!(this instanceof Splitter)) {
    return new Splitter();
  }
  this.cache = new Buffer('');
}
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 = new Buffer(len);

  var i = -1;
  while (++i < len) {
    padBuff.writeUInt8(len, i);
  }
  var out = Buffer.concat([this.cache, padBuff]);
  return out;
};
var modelist = {
  ECB: require(44),
  CBC: require(41),
  CFB: require(42),
  OFB: require(45),
  CTR: require(43)
};
module.exports = function (crypto) {
  function createCipheriv(suite, password, iv) {
    var config = modes[suite];
    if (!config) {
      throw new TypeError('invalid suite type');
    }
    if (typeof iv === 'string') {
      iv = new Buffer(iv);
    }
    if (typeof password === 'string') {
      password = new Buffer(password);
    }
    if (password.length !== config.key/8) {
      throw new TypeError('invalid key length ' + password.length);
    }
    if (iv.length !== config.iv) {
      throw new TypeError('invalid iv length ' + iv.length);
    }
    if (config.type === 'stream') {
      return new StreamCipher(modelist[config.mode], password, iv);
    }
    return new Cipher(modelist[config.mode], password, iv);
  }
  function createCipher (suite, password) {
    var config = modes[suite];
    if (!config) {
      throw new TypeError('invalid suite type');
    }
    var keys = ebtk(crypto, password, config.key, config.iv);
    return createCipheriv(suite, keys.key, keys.iv);
  }
  return {
    createCipher: createCipher,
    createCipheriv: createCipheriv
  };
};

}).call(this,require(4).Buffer)
},{}],39:[function(require,module,exports){
module.exports = function (crypto, exports) {
  exports = exports || {};
  var ciphers = require(38)(crypto);
  exports.createCipher = ciphers.createCipher;
  exports.createCipheriv = ciphers.createCipheriv;
  var deciphers = require(37)(crypto);
  exports.createDecipher = deciphers.createDecipher;
  exports.createDecipheriv = deciphers.createDecipheriv;
  var modes = require(40);
  function listCiphers () {
    return Object.keys(modes);
  }
  exports.listCiphers = listCiphers;
};


},{}],40:[function(require,module,exports){
exports['aes-128-ecb'] = {
  cipher: 'AES',
  key: 128,
  iv: 0,
  mode: 'ECB',
  type: 'block'
};
exports['aes-192-ecb'] = {
  cipher: 'AES',
  key: 192,
  iv: 0,
  mode: 'ECB',
  type: 'block'
};
exports['aes-256-ecb'] = {
  cipher: 'AES',
  key: 256,
  iv: 0,
  mode: 'ECB',
  type: 'block'
};
exports['aes-128-cbc'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CBC',
  type: 'block'
};
exports['aes-192-cbc'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CBC',
  type: 'block'
};
exports['aes-256-cbc'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CBC',
  type: 'block'
};
exports['aes128'] = exports['aes-128-cbc'];
exports['aes192'] = exports['aes-192-cbc'];
exports['aes256'] = exports['aes-256-cbc'];
exports['aes-128-cfb'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
};
exports['aes-192-cfb'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
};
exports['aes-256-cfb'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
};
exports['aes-128-ofb'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
};
exports['aes-192-ofb'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
};
exports['aes-256-ofb'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
};
exports['aes-128-ctr'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
};
exports['aes-192-ctr'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
};
exports['aes-256-ctr'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
};
},{}],41:[function(require,module,exports){
var xor = require(48);
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);
};
},{}],42:[function(require,module,exports){
(function (Buffer){
var xor = require(48);
exports.encrypt = function (self, data, decrypt) {
  var out = new Buffer('');
  var len;
  while (data.length) {
    if (self._cache.length === 0) {
      self._cache = self._cipher.encryptBlock(self._prev);
      self._prev = new Buffer('');
    }
    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;
};
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;
}
}).call(this,require(4).Buffer)
},{}],43:[function(require,module,exports){
(function (Buffer){
var xor = require(48);
function getBlock(self) {
  var out = self._cipher.encryptBlock(self._prev);
  incr32(self._prev);
  return out;
}
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);
};
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;
    }
  }
}
}).call(this,require(4).Buffer)
},{}],44:[function(require,module,exports){
exports.encrypt = function (self, block) {
  return self._cipher.encryptBlock(block);
};
exports.decrypt = function (self, block) {
  return self._cipher.decryptBlock(block);
};
},{}],45:[function(require,module,exports){
(function (Buffer){
var xor = require(48);
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(4).Buffer)
},{}],46:[function(require,module,exports){
module.exports=require(9)
},{}],47:[function(require,module,exports){
(function (Buffer){
var aes = require(35);
var Transform = require(36);
var inherits = require(46);

inherits(StreamCipher, Transform);
module.exports = StreamCipher;
function StreamCipher(mode, key, iv, decrypt) {
  if (!(this instanceof StreamCipher)) {
    return new StreamCipher(mode, key, iv);
  }
  Transform.call(this);
  this._cipher = new aes.AES(key);
  this._prev = new Buffer(iv.length);
  this._cache = new Buffer('');
  this._secCache = new Buffer('');
  this._decrypt = decrypt;
  iv.copy(this._prev);
  this._mode = mode;
}
StreamCipher.prototype._transform = function (chunk, _, next) {
  next(null, this._mode.encrypt(this, chunk, this._decrypt));
};
StreamCipher.prototype._flush = function (next) {
  this._cipher.scrub();
  next();
};
}).call(this,require(4).Buffer)
},{}],48:[function(require,module,exports){
(function (Buffer){
module.exports = xor;
function xor(a, b) {
  var len = Math.min(a.length, b.length);
  var out = new Buffer(len);
  var i = -1;
  while (++i < len) {
    out.writeUInt8(a[i] ^ b[i], i);
  }
  return out;
}
}).call(this,require(4).Buffer)
},{}],49:[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"
}
},{}],50:[function(require,module,exports){
(function (Buffer){
exports['RSA-SHA224'] = exports.sha224WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha224',
  id: new Buffer('302d300d06096086480165030402040500041c', 'hex')
};
exports['RSA-SHA256'] = exports.sha256WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha256',
  id: new Buffer('3031300d060960864801650304020105000420', 'hex')
};
exports['RSA-SHA384'] = exports.sha384WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha384',
  id: new Buffer('3041300d060960864801650304020205000430', 'hex')
};
exports['RSA-SHA512'] = exports.sha512WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha512',
  id: new Buffer('3051300d060960864801650304020305000440', 'hex')
};
exports['RSA-SHA1'] = {
	sign: 'rsa',
	hash: 'sha1',
	id: new Buffer('3021300906052b0e03021a05000414', 'hex')
}
exports['ecdsa-with-SHA1'] = {
	sign: 'ecdsa',
	hash: 'sha1',
	id: new Buffer(/*'3021300906052b0e03021a05000414'*/'', 'hex')
}
}).call(this,require(4).Buffer)
},{}],51:[function(require,module,exports){
// from https://github.com/indutny/self-signed/blob/gh-pages/lib/asn1.js
// Fedor, you are amazing.

var asn1 = require(55);
var rfc3280 = require(54);

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 = rfc3280.SubjectPublicKeyInfo;
exports.PublicKey = PublicKey;
var ECPublicKey =  asn1.define('ECPublicKey', function() {
  this.seq().obj(
    this.key('algorithm').seq().obj(
      this.key('id').objid(),
      this.key('curve').objid()
    ),
    this.key('subjectPrivateKey').bitstr()
  );
});
exports.ECPublicKey = ECPublicKey;
var ECPrivateWrap =  asn1.define('ECPrivateWrap', function() {
  this.seq().obj(
    this.key('version').int(),
    this.key('algorithm').seq().obj(
      this.key('id').objid(),
      this.key('curve').objid()
    ),
    this.key('subjectPrivateKey').octstr()
  );
});
exports.ECPrivateWrap = ECPrivateWrap;
var PrivateKeyInfo = asn1.define('PrivateKeyInfo', function() {
  this.seq().obj(
    this.key('version').int(),
    this.key('algorithm').use(rfc3280.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 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()
  });
});

var ECPrivateKey2 = asn1.define('ECPrivateKey2', function() {
  this.seq().obj(
    this.key('version').int(),
    this.key('privateKey').octstr(),
    this.key('publicKey').seq().obj(
      this.key('key').bitstr()
    )
  );
});
exports.ECPrivateKey2 = ECPrivateKey2;
},{}],52:[function(require,module,exports){
require(53)(module.exports, require(32));
},{}],53:[function(require,module,exports){
(function (Buffer){
var sign = require(100);
var verify = require(101);
var Writable = require(98).Writable;
var inherits = require(88);
var algos = require(50);
'use strict';
module.exports = function (exports, crypto) {
	exports.createSign = createSign;
	function createSign(algorithm) {

		return new Sign(algorithm, crypto);
	}
	exports.createVerify = createVerify;
	function createVerify(algorithm) {
		return new Verify(algorithm, crypto);
	}
};
inherits(Sign, Writable);
function Sign(algorithm, crypto) {
	Writable.call(this);
	var data = algos[algorithm];
	if (!data) {
		throw new Error('Unknown message digest');
	}
	this._hash = crypto.createHash(data.hash);
	this._tag = data.id;
	this._crypto = crypto;
};
Sign.prototype._write = function _write(data, _, done) {
	this._hash.update(data);
	done();
};
Sign.prototype.update = function update(data) {
	this.write(data);
	return this;
};

Sign.prototype.sign = function signMethod(key, enc) {
	this.end();
	var hash = this._hash.digest();
	var sig = sign(Buffer.concat([this._tag, hash]), key, this._crypto);
	if (enc) {
		sig = sig.toString(enc);
	}
	return sig;
};

inherits(Verify, Writable);
function Verify(algorithm, crypto) {
	Writable.call(this);
	var data = algos[algorithm];
	if (!data) {
		throw new Error('Unknown message digest');
	}
	this._hash = crypto.createHash(data.hash);
	this._tag = data.id;
};
Verify.prototype._write = function _write(data, _, done) {
	this._hash.update(data);
	done();
};
Verify.prototype.update = function update(data) {
	this.write(data);
	return this;
};

Verify.prototype.verify = function verifyMethod(key, sig, enc) {
	this.end();
	var hash = this._hash.digest();
	if (!Buffer.isBuffer(sig)) {
		sig = new Buffer(sig, enc);
	}
	return verify(sig, Buffer.concat([this._tag, hash]), key);
};
}).call(this,require(4).Buffer)
},{}],54:[function(require,module,exports){
try {
  var asn1 = require(55);
} catch (e) {
  var asn1 = require(52);
}

var CRLReason = asn1.define('CRLReason', function() {
  this.enum({
    0: 'unspecified',
    1: 'keyCompromise',
    2: 'CACompromise',
    3: 'affiliationChanged',
    4: 'superseded',
    5: 'cessationOfOperation',
    6: 'certificateHold',
    8: 'removeFromCRL',
    9: 'privilegeWithdrawn',
    10: 'AACompromise'
  });
});
exports.CRLReason = CRLReason;

var AlgorithmIdentifier = asn1.define('AlgorithmIdentifier', function() {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('parameters').optional().any()
  );
});
exports.AlgorithmIdentifier = AlgorithmIdentifier;

var Certificate = asn1.define('Certificate', function() {
  this.seq().obj(
    this.key('tbsCertificate').use(TBSCertificate),
    this.key('signatureAlgorithm').use(AlgorithmIdentifier),
    this.key('signature').bitstr()
  );
});
exports.Certificate = Certificate;

var TBSCertificate = asn1.define('TBSCertificate', function() {
  this.seq().obj(
    this.key('version').def('v1').explicit(0).use(Version),
    this.key('serialNumber').use(CertificateSerialNumber),
    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),

    // TODO(indutny): validate that version is v2 or v3
    this.key('issuerUniqueID').optional().explicit(1).use(UniqueIdentifier),
    this.key('subjectUniqueID').optional().explicit(2).use(UniqueIdentifier),

    // TODO(indutny): validate that version is v3
    this.key('extensions').optional().explicit(3).use(Extensions)
  );
});
exports.TBSCertificate = TBSCertificate;

var Version = asn1.define('Version', function() {
  this.int({
    0: 'v1',
    1: 'v2',
    2: 'v3'
  });
});
exports.Version = Version;

var CertificateSerialNumber = asn1.define('CertificateSerialNumber',
                                          function() {
  this.int();
});
exports.CertificateSerialNumber = CertificateSerialNumber;

var Validity = asn1.define('Validity', function() {
  this.seq().obj(
    this.key('notBefore').use(Time),
    this.key('notAfter').use(Time)
  );
});
exports.Validity = Validity;

var Time = asn1.define('Time', function() {
  this.choice({
    utcTime: this.utctime(),
    genTime: this.gentime()
  });
});
exports.Time = Time;

var UniqueIdentifier = asn1.define('UniqueIdentifier', function() {
  this.bitstr();
});
exports.UniqueIdentifier = UniqueIdentifier;

var SubjectPublicKeyInfo = asn1.define('SubjectPublicKeyInfo', function() {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  );
});
exports.SubjectPublicKeyInfo = SubjectPublicKeyInfo;

var Extensions = asn1.define('Extensions', function() {
  this.seqof(Extension);
});
exports.Extensions = Extensions;

var Extension = asn1.define('Extension', function() {
  this.seq().obj(
    this.key('extnID').objid(),
    this.key('critical').bool().def(false),
    this.key('extnValue').octstr()
  );
});
exports.Extension = Extension;

var Name = asn1.define('Name', function() {
  this.choice({
    rdn: this.use(RDNSequence)
  });
});
exports.Name = Name;

var RDNSequence = asn1.define('RDNSequence', function() {
  this.seqof(RelativeDistinguishedName);
});
exports.RDNSequence = RDNSequence;

var RelativeDistinguishedName = asn1.define('RelativeDistinguishedName',
                                            function() {
  this.setof(AttributeTypeAndValue);
});
exports.RelativeDistinguishedName = RelativeDistinguishedName;

var AttributeTypeAndValue = asn1.define('AttributeTypeAndValue', function() {
  this.seq().obj(
    this.key('type').use(AttributeType),
    this.key('value').use(AttributeValue)
  );
});
exports.AttributeTypeAndValue = AttributeTypeAndValue;

var AttributeType = asn1.define('AttributeType', function() {
  this.objid();
});
exports.AttributeType = AttributeType;

var AttributeValue = asn1.define('AttributeValue', function() {
  this.any();
});
exports.AttributeValue = AttributeValue;

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

asn1.bignum = require(67);

asn1.define = require(56).define;
asn1.base = require(58);
asn1.constants = require(62);
asn1.decoders = require(64);
asn1.encoders = require(66);

},{}],56:[function(require,module,exports){
var asn1 = require(55);
var util = require(26);
var vm = require(27);

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 = vm.runInThisContext('(function ' + this.name + '(entity) {\n' +
    '  this._initNamed(entity);\n' +
    '})');
  util.inherits(named, base);
  named.prototype._initNamed = function initnamed(entity) {
    base.call(this, entity);
  };

  return new named(this);
};

Entity.prototype._getDecoder = function _getDecoder(enc) {
  // 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) {
  // 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);
};

},{}],57:[function(require,module,exports){
var assert = require(2);
var util = require(26);
var Reporter = require(58).Reporter;
var Buffer = require(4).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;
}
util.inherits(DecoderBuffer, Reporter);
exports.DecoderBuffer = DecoderBuffer;

DecoderBuffer.prototype.save = function save() {
  return { offset: this.offset };
};

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;

  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;
};

},{}],58:[function(require,module,exports){
var base = exports;

base.Reporter = require(60).Reporter;
base.DecoderBuffer = require(57).DecoderBuffer;
base.EncoderBuffer = require(57).EncoderBuffer;
base.Node = require(59);

},{}],59:[function(require,module,exports){
var assert = require(2);
var Reporter = require(58).Reporter;
var EncoderBuffer = require(58).EncoderBuffer;

// Supported tags
var tags = [
  'seq', 'seqof', 'set', 'setof', 'octstr', 'bitstr', 'objid', 'bool',
  'gentime', 'utctime', 'null_', 'enum', 'int', 'ia5str'
];

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

  // 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'
];

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) {
  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(key) {
  var state = this._baseState;

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

  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;
};

//
// Decoding
//

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

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

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

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

  // Check if tag is there
  if (state.optional) {
    present = this._peekTag(
      input,
      state.explicit !== null ? state.explicit :
          state.implicit !== null ? state.implicit :
              state.tag || 0
    );
    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;
    }

    // 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;
    }

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

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

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

  // 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);

  return result;
};

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

  if (tag === 'seq' || tag === 'set')
    return null;
  if (tag === 'seqof' || tag === 'setof')
    return this._decodeList(input, tag, state.args[0]);
  else if (tag === 'octstr' || tag === 'bitstr' || tag === 'ia5str')
    return this._decodeStr(input, tag);
  else if (tag === 'objid' && state.args)
    return this._decodeObjid(input, state.args[0], state.args[1]);
  else if (tag === 'objid')
    return this._decodeObjid(input, null, null);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._decodeTime(input, tag);
  else if (tag === 'null_')
    return this._decodeNull(input);
  else if (tag === 'bool')
    return this._decodeBool(input);
  else if (tag === 'int' || tag === 'enum')
    return this._decodeInt(input, state.args && state.args[0]);
  else if (state.use !== null)
    return this._getUse(state.use, input._reporterState.obj)._decode(input);
  else
    return input.error('unknown tag: ' + tag);

  return null;
};

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) {
  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);
      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;
  var present = true;

  // 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;
  }

  // For error reporting
  var prevKey;

  // 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.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 ommited 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 (tag === 'octstr' || tag === 'bitstr' || tag === 'ia5str')
    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
    throw new Error('Unsupported tag: ' + tag);
};

},{}],60:[function(require,module,exports){
var util = require(26);

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

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

  state.path = state.path.slice(0, index - 1);
  if (state.obj !== null)
    state.obj[key] = value;
};

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;

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

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

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

  return this;
};

},{}],61:[function(require,module,exports){
var constants = require(62);

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);

},{}],62:[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(61);

},{}],63:[function(require,module,exports){
var util = require(26);

var asn1 = require(55);
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);
}
util.inherits(DERNode, base.Node);

DERNode.prototype._peekTag = function peekTag(buffer, tag) {
  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;
};

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.start();
  var res = this._skipUntilEnd(
      buffer,
      'Failed to skip indefinite length body: "' + this.tag + '"');
  if (buffer.isError(res))
    return res;

  return buffer.cut(state);
};

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) {
  var result = [];
  while (!buffer.isEmpty()) {
    var possibleEnd = this._peekTag(buffer, 'end');
    if (buffer.isError(possibleEnd))
      return possibleEnd;

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

DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
  if (tag === 'octstr') {
    return buffer.raw();
  } else if (tag === 'bitstr') {
    var unused = buffer.readUInt8();
    if (buffer.isError(unused))
      return unused;

    return { unused: unused, data: buffer.raw() };
  } else if (tag === 'ia5str') {
    return buffer.raw().toString();
  } else {
    return this.error('Decoding of string type: ' + tag + ' unsupported');
  }
};

DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
  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)
    result = values[result.join(' ')];

  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 this.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) {
  var res = 0;

  // Bigint, return as it is (assume big endian)
  var raw = buffer.raw();
  if (raw.length > 3)
    return new bignum(raw);

  while (!buffer.isEmpty()) {
    res <<= 8;
    var i = buffer.readUInt8();
    if (buffer.isError(i))
      return i;
    res |= i;
  }

  if (values)
    res = values[res] || 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;
}

},{}],64:[function(require,module,exports){
var decoders = exports;

decoders.der = require(63);

},{}],65:[function(require,module,exports){
var util = require(26);
var Buffer = require(4).Buffer;

var asn1 = require(55);
var base = asn1.base;
var bignum = asn1.bignum;

// 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);
}
util.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 === 'octstr')
    return this._createEncoderBuffer(str);
  else if (tag === 'bitstr')
    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
  else if (tag === 'ia5str')
    return this._createEncoderBuffer(str);
  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();
  }

  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 = [
      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 = [
      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 (bignum !== null && num instanceof bignum) {
    var numArray = num.toArray();
    if(num.sign === false && 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;
}

},{}],66:[function(require,module,exports){
var encoders = exports;

encoders.der = require(65);

},{}],67:[function(require,module,exports){
// Utils

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

function assertEqual(l, r, msg) {
  if (l != r)
    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
}

// 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) {
  // May be `new BN(bn)` ?
  if (number !== null &&
      typeof number === 'object' &&
      Array.isArray(number.words)) {
    return number;
  }

  this.sign = false;
  this.words = null;
  this.length = 0;

  // Reduction context
  this.red = null;

  if (number !== null)
    this._init(number || 0, base || 10);
}
if (typeof module === 'object')
  module.exports = BN;

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

BN.prototype._init = function init(number, base) {
  if (typeof number === 'number') {
    if (number < 0) {
      this.sign = true;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    }
    return;
  } else if (typeof number === 'object') {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    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;

    // Assume big-endian
    var off = 0;
    for (var i = number.length - 1, j = 0; i >= 0; i -= 3) {
      var 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();
  }
  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.sign = true;

  this.strip();
};

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;

  // Scan 24-bit chunks and add them to the number
  var off = 0;
  for (var i = number.length - 6, j = 0; i >= start; i -= 6) {
    var w = parseInt(number.slice(i, i + 6), 16);
    this.words[j] |= (w << off) & 0x3ffffff;
    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    off += 24;
    if (off >= 26) {
      off -= 26;
      j++;
    }
  }
  if (i + 6 !== start) {
    var w = parseInt(number.slice(start, i + 6), 16);
    this.words[j] |= (w << off) & 0x3ffffff;
    this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
  }
  this.strip();
};

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

  var word = 0;
  var q = 1;
  var p = 0;
  var bigQ = null;
  for (var i = start; i < number.length; i++) {
    var digit;
    var ch = number[i];
    if (base === 10 || ch <= '9')
      digit = ch | 0;
    else if (ch >= 'a')
      digit = ch.charCodeAt(0) - 97 + 10;
    else
      digit = ch.charCodeAt(0) - 65 + 10;
    word *= base;
    word += digit;
    q *= base;
    p++;

    if (q > 0xfffff) {
      assert(q <= 0x3ffffff);
      if (!bigQ)
        bigQ = new BN(q);
      this.mul(bigQ).copy(this);
      this.iadd(new BN(word));
      word = 0;
      q = 1;
      p = 0;
    }
  }
  if (p !== 0) {
    this.mul(new BN(q)).copy(this);
    this.iadd(new BN(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.sign = this.sign;
  dest.red = this.red;
};

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

// 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.sign = false;
  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;
  // TODO: <=
  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;
  if (base === 16 || base === 'hex') {
    var out = '';
    var off = 0;
    var padding = padding | 0 || 1;
    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.sign)
      out = '-' + out;
    return out;
  } else 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];
    var out = '';
    var c = this.clone();
    c.sign = false;
    while (c.cmpn(0) !== 0) {
      var r = c.modn(groupBase).toString(base);
      c = c.idivn(groupBase);

      if (c.cmpn(0) !== 0)
        out = zeros[groupSize - r.length] + r + out;
      else
        out = r + out;
    }
    if (this.cmpn(0) === 0)
      out = '0' + out;
    if (this.sign)
      out = '-' + out;
    return out;
  } else {
    assert(false, 'Base should be between 2 and 36');
  }
};

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

BN.prototype.toArray = function toArray() {
  this.strip();
  var res = new Array(this.byteLength());
  res[0] = 0;

  var q = this.clone();
  for (var i = 0; q.cmpn(0) !== 0; i++) {
    var b = q.andln(0xff);
    q.ishrn(8);

    // Assume big-endian
    res[res.length - i - 1] = b;
  }

  return res;
};

/*
function genCountBits(bits) {
  var arr = [];

  for (var i = bits - 1; i >= 0; i--) {
    var bit = '0x' + (1 << i).toString(16);
    arr.push('w >= ' + bit + ' ? ' + (i + 1));
  }

  return new Function('w', 'return ' + arr.join(' :\n') + ' :\n0;');
};

BN.prototype._countBits = genCountBits(26);
*/

// Sadly chrome apps could not contain `new Function()` calls
BN.prototype._countBits = function _countBits(w) {
  return w >= 0x2000000 ? 26 :
         w >= 0x1000000 ? 25 :
         w >= 0x800000 ? 24 :
         w >= 0x400000 ? 23 :
         w >= 0x200000 ? 22 :
         w >= 0x100000 ? 21 :
         w >= 0x80000 ? 20 :
         w >= 0x40000 ? 19 :
         w >= 0x20000 ? 18 :
         w >= 0x10000 ? 17 :
         w >= 0x8000 ? 16 :
         w >= 0x4000 ? 15 :
         w >= 0x2000 ? 14 :
         w >= 0x1000 ? 13 :
         w >= 0x800 ? 12 :
         w >= 0x400 ? 11 :
         w >= 0x200 ? 10 :
         w >= 0x100 ? 9 :
         w >= 0x80 ? 8 :
         w >= 0x40 ? 7 :
         w >= 0x20 ? 6 :
         w >= 0x10 ? 5 :
         w >= 0x8 ? 4 :
         w >= 0x4 ? 3 :
         w >= 0x2 ? 2 :
         w >= 0x1 ? 1 :
         0;
};

// Return number of used bits in a BN
BN.prototype.bitLength = function bitLength() {
  var hi = 0;
  var w = this.words[this.length - 1];
  var hi = this._countBits(w);
  return (this.length - 1) * 26 + hi;
};

BN.prototype.byteLength = function byteLength() {
  var hi = 0;
  var w = this.words[this.length - 1];
  return Math.ceil(this.bitLength() / 8);
};

// Return negative clone of `this`
BN.prototype.neg = function neg() {
  if (this.cmpn(0) === 0)
    return this.clone();

  var r = this.clone();
  r.sign = !this.sign;
  return r;
};

// Add `num` to `this` in-place
BN.prototype.iadd = function iadd(num) {
  // negative + positive
  if (this.sign && !num.sign) {
    this.sign = false;
    var r = this.isub(num);
    this.sign = !this.sign;
    return this._normSign();

  // positive + negative
  } else if (!this.sign && num.sign) {
    num.sign = false;
    var r = this.isub(num);
    num.sign = true;
    return r._normSign();
  }

  // a.length > b.length
  var a;
  var 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++) {
    var r = a.words[i] + b.words[i] + carry;
    this.words[i] = r & 0x3ffffff;
    carry = r >>> 26;
  }
  for (; carry !== 0 && i < a.length; i++) {
    var r = a.words[i] + 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) {
  if (num.sign && !this.sign) {
    num.sign = false;
    var res = this.sub(num);
    num.sign = true;
    return res;
  } else if (!num.sign && this.sign) {
    this.sign = false;
    var res = num.sub(this);
    this.sign = true;
    return res;
  }

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

// Subtract `num` from `this` in-place
BN.prototype.isub = function isub(num) {
  // this - (-num) = this + num
  if (num.sign) {
    num.sign = false;
    var r = this.iadd(num);
    num.sign = true;
    return r._normSign();

  // -this - num = -(this + num)
  } else if (this.sign) {
    this.sign = false;
    this.iadd(num);
    this.sign = true;
    return this._normSign();
  }

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

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

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

  var carry = 0;
  for (var i = 0; i < b.length; i++) {
    var r = a.words[i] - b.words[i] - carry;
    if (r < 0) {
      r += 0x4000000;
      carry = 1;
    } else {
      carry = 0;
    }
    this.words[i] = r;
  }
  for (; carry !== 0 && i < a.length; i++) {
    var r = a.words[i] - carry;
    if (r < 0) {
      r += 0x4000000;
      carry = 1;
    } else {
      carry = 0;
    }
    this.words[i] = r;
  }

  // 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.sign = true;

  return this.strip();
};

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

/*
// NOTE: This could be potentionally used to generate loop-less multiplications
function _genCombMulTo(alen, blen) {
  var len = alen + blen - 1;
  var src = [
    'var a = this.words, b = num.words, o = out.words, c = 0, w, ' +
        'mask = 0x3ffffff, shift = 0x4000000;',
    'out.length = ' + len + ';'
  ];
  for (var k = 0; k < len; k++) {
    var minJ = Math.max(0, k - alen + 1);
    var maxJ = Math.min(k, blen - 1);

    for (var j = minJ; j <= maxJ; j++) {
      var i = k - j;
      var mul = 'a[' + i + '] * b[' + j + ']';

      if (j === minJ) {
        src.push('w = ' + mul + ' + c;');
        src.push('c = (w / shift) | 0;');
      } else {
        src.push('w += ' + mul + ';');
        src.push('c += (w / shift) | 0;');
      }
      src.push('w &= mask;');
    }
    src.push('o[' + k + '] = w;');
  }
  src.push('if (c !== 0) {',
           '  o[' + k + '] = c;',
           '  out.length++;',
           '}',
           'return out;');

  return src.join('\n');
}
*/

BN.prototype._smallMulTo = function _smallMulTo(num, out) {
  out.sign = num.sign !== this.sign;
  out.length = this.length + num.length;

  var carry = 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 = carry >>> 26;
    var rword = carry & 0x3ffffff;
    var maxJ = Math.min(k, num.length - 1);
    for (var j = Math.max(0, k - this.length + 1); j <= maxJ; j++) {
      var i = k - j;
      var a = this.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;
    }
    out.words[k] = rword;
    carry = ncarry;
  }
  if (carry !== 0) {
    out.words[k] = carry;
  } else {
    out.length--;
  }

  return out.strip();
};

BN.prototype._bigMulTo = function _bigMulTo(num, out) {
  out.sign = num.sign !== this.sign;
  out.length = this.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 - this.length + 1); j <= maxJ; j++) {
      var i = k - j;
      var a = this.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();
};

BN.prototype.mulTo = function mulTo(num, out) {
  var res;
  if (this.length + num.length < 63)
    res = this._smallMulTo(num, out);
  else
    res = this._bigMulTo(num, out);
  return res;
};

// 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);
};

// In-place Multiplication
BN.prototype.imul = function imul(num) {
  if (this.cmpn(0) === 0 || num.cmpn(0) === 0) {
    this.words[0] = 0;
    this.length = 1;
    return this;
  }

  var tlen = this.length;
  var nlen = num.length;

  this.sign = num.sign !== this.sign;
  this.length = this.length + num.length;
  this.words[this.length - 1] = 0;

  var lastCarry = 0;
  for (var k = this.length - 2; k >= 0; k--) {
    // Sum all words with the same `i + j = k` and accumulate `carry`,
    // note that carry could be >= 0x3ffffff
    var carry = 0;
    var rword = 0;
    var maxJ = Math.min(k, nlen - 1);
    for (var j = Math.max(0, k - tlen + 1); j <= maxJ; j++) {
      var i = k - j;
      var a = this.words[i];
      var b = num.words[j];
      var r = a * b;

      var lo = r & 0x3ffffff;
      carry += (r / 0x4000000) | 0;
      lo += rword;
      rword = lo & 0x3ffffff;
      carry += lo >>> 26;
    }
    this.words[k] = rword;
    this.words[k + 1] += carry;
    carry = 0;
  }

  // Propagate overflows
  var carry = 0;
  for (var i = 1; i < this.length; i++) {
    var w = this.words[i] + carry;
    this.words[i] = w & 0x3ffffff;
    carry = w >>> 26;
  }

  return this.strip();
};

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

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

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

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

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

  return this.strip();
};

// Shift-right in-place
// NOTE: `hint` is a lowest bit before trailing zeroes
// NOTE: if `extended` is true - { lo: ..., hi: } object will be returned
BN.prototype.ishrn = function ishrn(bits, hint, extended) {
  assert(typeof bits === 'number' && bits >= 0);
  if (hint)
    hint = (hint - (hint % 26)) / 26;
  else
    hint = 0;

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

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

  // 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 (var 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 (var i = this.length - 1; i >= 0 && (carry !== 0 || i >= hint); i--) {
    var word = this.words[i];
    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;
  }

  this.strip();
  if (extended)
    return { hi: this, lo: maskedWords };

  return this;
};

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

// Shift-right
BN.prototype.shrn = function shrn(bits) {
  return this.clone().ishrn(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.sign, 'imaskn works only with positive numbers');

  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');
  if (num < 0)
    return this.isubn(-num);

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

    this.sign = false;
    this.isubn(num);
    this.sign = true;
    return this;
  }
  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');
  if (num < 0)
    return this.iaddn(-num);

  if (this.sign) {
    this.sign = false;
    this.iaddn(num);
    this.sign = true;
    return this;
  }

  this.words[0] -= num;

  // 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.sign = false;

  return this
};

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

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

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

  var q = mode !== 'mod' && new BN(0);
  var sign = false;

  // Approximate quotient at each step
  while (a.length > b.length) {
    // NOTE: a.length is always >= 2, because of the condition .div()
    var hi = a.words[a.length - 1] * 0x4000000 + a.words[a.length - 2];
    var sq = (hi / b.words[b.length - 1]);
    var sqhi = (sq / 0x4000000) | 0;
    var sqlo = sq & 0x3ffffff;
    sq = new BN(null);
    sq.words = [ sqlo, sqhi ];
    sq.length = 2;

    // Collect quotient
    var shift = (a.length - b.length - 1) * 26;
    if (q) {
      var t = sq.shln(shift);
      if (a.sign)
        q.isub(t);
      else
        q.iadd(t);
    }

    sq = sq.mul(b).ishln(shift);
    if (a.sign)
      a.iadd(sq)
    else
      a.isub(sq);
  }
  // At this point a.length <= b.length
  while (a.ucmp(b) >= 0) {
    // NOTE: a.length is always >= 2, because of the condition above
    var hi = a.words[a.length - 1];
    var sq = new BN((hi / b.words[b.length - 1]) | 0);
    var shift = (a.length - b.length) * 26;

    if (q) {
      var t = sq.shln(shift);
      if (a.sign)
        q.isub(t);
      else
        q.iadd(t);
    }

    sq = sq.mul(b).ishln(shift);

    if (a.sign)
      a.iadd(sq);
    else
      a.isub(sq);
  }

  if (a.sign) {
    if (q)
      q.isubn(1);
    a.iadd(b);
  }
  return { div: q ? q : null, mod: a };
};

BN.prototype.divmod = function divmod(num, mode) {
  assert(num.cmpn(0) !== 0);

  if (this.sign && !num.sign) {
    var res = this.neg().divmod(num, mode);
    var div;
    var mod;
    if (mode !== 'mod')
      div = res.div.neg();
    if (mode !== 'div')
      mod = res.mod.cmpn(0) === 0 ? res.mod : num.sub(res.mod);
    return {
      div: div,
      mod: mod
    };
  } else if (!this.sign && num.sign) {
    var res = this.divmod(num.neg(), mode);
    var div;
    if (mode !== 'mod')
      div = res.div.neg();
    return { div: div, mod: res.mod };
  } else if (this.sign && num.sign) {
    return this.neg().divmod(num.neg(), mode);
  }

  // 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 };
    else 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').div;
};

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

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

  // Fast case - exact division
  if (dm.mod.cmpn(0) === 0)
    return dm.div;

  var mod = dm.div.sign ? dm.mod.isub(num) : dm.mod;

  var half = num.shrn(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.sign ? 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]) % 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] + 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(x1, p) {
  assert(!p.sign);
  assert(p.cmpn(0) !== 0);

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

  if (a.sign)
    a = a.mod(p);
  else
    a = a.clone();

  var x2 = new BN(0);
  while (b.isEven())
    b.ishrn(1);
  var delta = b.clone();
  while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
    while (a.isEven()) {
      a.ishrn(1);
      if (x1.isEven())
        x1.ishrn(1);
      else
        x1.iadd(delta).ishrn(1);
    }
    while (b.isEven()) {
      b.ishrn(1);
      if (x2.isEven())
        x2.ishrn(1);
      else
        x2.iadd(delta).ishrn(1);
    }
    if (a.cmp(b) >= 0) {
      a.isub(b);
      x1.isub(x2);
    } else {
      b.isub(a);
      x2.isub(x1);
    }
  }
  if (a.cmpn(1) === 0)
    return x1;
  else
    return x2;
};

BN.prototype.gcd = function gcd(num) {
  if (this.cmpn(0) === 0)
    return num.clone();
  if (num.cmpn(0) === 0)
    return this.clone();

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

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

  while (a.isEven())
    a.ishrn(1);

  do {
    while (b.isEven())
      b.ishrn(1);

    // Swap `a` and `b` to make `a` always bigger than `b`
    if (a.cmp(b) < 0) {
      var t = a;
      a = b;
      b = t;
    }
    a.isub(a.div(b).mul(b));
  } while (a.cmpn(0) !== 0 && b.cmpn(0) !== 0);
  if (a.cmpn(0) === 0)
    return b.ishln(shift);
  else
    return a.ishln(shift);
};

// Invert number in the field F(num)
BN.prototype.invm = function invm(num) {
  return this._egcd(new BN(1), num).mod(num);
};

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

BN.prototype.isOdd = function isOdd(num) {
  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) {
    for (var i = this.length; i < s + 1; i++)
      this.words[i] = 0;
    this.words[s] |= q;
    this.length = s + 1;
    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];
    w += carry;
    carry = w >>> 26;
    w &= 0x3ffffff;
    this.words[i] = w;
  }
  if (carry !== 0) {
    this.words[i] = carry;
    this.length++;
  }
  return this;
};

BN.prototype.cmpn = function cmpn(num) {
  var sign = num < 0;
  if (sign)
    num = -num;

  if (this.sign && !sign)
    return -1;
  else if (!this.sign && sign)
    return 1;

  num &= 0x3ffffff;
  this.strip();

  var res;
  if (this.length > 1) {
    res = 1;
  } else {
    var w = this.words[0];
    res = w === num ? 0 : w < num ? -1 : 1;
  }
  if (this.sign)
    res = -res;
  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.sign && !num.sign)
    return -1;
  else if (!this.sign && num.sign)
    return 1;

  var res = this.ucmp(num);
  if (this.sign)
    return -res;
  else
    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;
  else if (this.length < num.length)
    return -1;

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

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

//
// 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.sign, '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).ishln(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 {
    var pair = r.ishrn(this.n, 0, this.tmp);
    r = this.imulK(pair.hi);
    r = r.iadd(pair.lo);
    rlen = r.bitLength();
  } while (rlen > this.n);

  var cmp = rlen < this.n ? -1 : r.cmp(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.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.imulK = function imulK(num) {
  // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
  num.words[num.length] = 0;
  num.words[num.length + 1] = 0;
  num.length += 2;
  for (var i = num.length - 3; i >= 0; i--) {
    var w = num.words[i];
    var hi = w * 0x40;
    var lo = w * 0x3d1;
    hi += (lo / 0x4000000) | 0;
    var uhi = (hi / 0x4000000) | 0;
    hi &= 0x3ffffff;
    lo &= 0x3ffffff;

    num.words[i + 2] += uhi;
    num.words[i + 1] += hi;
    num.words[i] = lo;
  }
  var w = num.words[num.length - 2];
  if (w >= 0x4000000) {
    num.words[num.length - 1] += w >>> 26;
    num.words[num.length - 2] = w & 0x3ffffff;
  }
  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] * 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 {
    this.m = m;
    this.prime = null;
  }
}

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

Red.prototype._verify2 = function _verify2(a, b) {
  assert(!a.sign && !b.sign, '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.mod(this.m)._forceRed(this);
};

Red.prototype.neg = function neg(a) {
  var r = a.clone();
  r.sign = !r.sign;
  return r.iadd(this.m)._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.shln(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);
};

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

Red.prototype.sqrt = function sqrt(a) {
  if (a.cmpn(0) === 0)
    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)).ishrn(2);
    var r = this.pow(a, pow);
    return r;
  }

  // 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.cmpn(0) !== 0 && q.andln(1) === 0) {
    s++;
    q.ishrn(1);
  }
  assert(q.cmpn(0) !== 0);

  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).ishrn(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).ishrn(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).ishln(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._egcd(new BN(1), this.m);
  if (inv.sign) {
    inv.sign = false;
    return this.imod(inv).redNeg();
  } else {
    return this.imod(inv);
  }
};

Red.prototype.pow = function pow(a, num) {
  var w = [];
  var q = num.clone();
  while (q.cmpn(0) !== 0) {
    w.push(q.andln(1));
    q.ishrn(1);
  }

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

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

  return res;
};

Red.prototype.convertTo = function convertTo(num) {
  return num.clone();
};

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).ishln(this.shift);
  this.r2 = this.imod(this.r.sqr());
  this.rinv = this.r.invm(this.m);

  // TODO(indutny): simplify it
  this.minv = this.rinv.mul(this.r)
                       .sub(new BN(1))
                       .div(this.m)
                       .neg()
                       .mod(this.r);
}
inherits(Mont, Red);

Mont.prototype.convertTo = function convertTo(num) {
  return this.imod(num.shln(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.cmpn(0) === 0 || b.cmpn(0) === 0) {
    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).ishrn(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.cmpn(0) === 0 || b.cmpn(0) === 0)
    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).ishrn(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.invm(this.m).mul(this.r2));
  return res._forceRed(this);
};

},{}],68:[function(require,module,exports){
var elliptic = exports;

elliptic.version = require(87).version;
elliptic.utils = require(79);
elliptic.rand = require(80);
elliptic.hmacDRBG = require(78);
elliptic.curve = require(71);
elliptic.curves = require(74);

// Protocols
elliptic.ec = require(75);

},{}],69:[function(require,module,exports){
var assert = require(2);
var bn = require(67);
var elliptic = require(68);

var getNAF = elliptic.utils.getNAF;
var getJSF = elliptic.utils.getJSF;

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);
}
module.exports = BaseCurve;

BaseCurve.prototype.point = function point() {
  throw new Error('Not implemented');
};

BaseCurve.prototype.validate = function validate(point) {
  throw new Error('Not implemented');
};

BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
  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) {
  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;
  return acc.toP();
};

BaseCurve.BasePoint = BasePoint;

function BasePoint(curve, type) {
  this.curve = curve;
  this.type = type;
  this.precomputed = null;
}

BasePoint.prototype.validate = function validate() {
  return this.curve.validate(this);
};

BasePoint.prototype.precompute = function precompute(power, _beta) {
  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._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;
};

},{}],70:[function(require,module,exports){
var assert = require(2);
var curve = require(71);
var elliptic = require(68);
var bn = require(67);
var inherits = require(88);
var Base = curve.base;

var getNAF = elliptic.utils.getNAF;

function EdwardsCurve(conf) {
  // NOTE: Important as we are creating point in Base.call()
  this.twisted = conf.a != 1;
  this.mOneA = this.twisted && conf.a == -1;
  this.extended = this.mOneA;

  Base.call(this, 'mont', conf);

  this.a = new bn(conf.a, 16).mod(this.red.m).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 == 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);
};

EdwardsCurve.prototype.point = function point(x, y, z, t) {
  return new Point(this, x, y, z, t);
};

// Just for compatibility with Short curve
EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
  return this.point(x, y, z, t);
};

EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

EdwardsCurve.prototype.pointFromX = function pointFromX(odd, x) {
  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 y = rhs.redMul(lhs.redInvm()).redSqrt();
  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y, curve.one);
};

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);

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;
};

Point.prototype._extDbl = function _extDbl() {
  // http://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() {
  // http://hyperelliptic.org/EFD/g1p/auto-twisted-projective.html#doubling-dbl-2008-bbjlp
  // http://hyperelliptic.org/EFD/g1p/auto-edwards-projective.html#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();

  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)
      var nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
      // Y3 = F * (E - D)
      var ny = f.redMul(e.redSub(d));
      // Z3 = F^2 - 2 * F
      var 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
      var nx = b.redSub(c).redISub(d).redMul(j);
      // Y3 = F * (E - D)
      var ny = f.redMul(e.redSub(d));
      // Z3 = F * J
      var nz = f.redMul(j);
    }
  } else {
    // E = C + D
    var e = c.redAdd(d);
    // H = (c * Z1)^2
    var h = this.curve._mulC(redMul(this.z)).redSqr();
    // J = E - 2 * H
    var j = e.redSub(h).redSub(h);
    // X3 = c * (B - E) * J
    var nx = this.curve._mulC(b.redISub(e)).redMul(j);
    // Y3 = c * E * (C - D)
    var ny = this.curve._mulC(e).redMul(c.redISub(d));
    // Z3 = E * J
    var 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) {
  // http://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) {
  // http://hyperelliptic.org/EFD/g1p/auto-twisted-projective.html#addition-add-2008-bbjlp
  // http://hyperelliptic.org/EFD/g1p/auto-edwards-projective.html#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);
  if (this.curve.twisted) {
    // Y3 = A * G * (D - a * C)
    var ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
    // Z3 = F * G
    var nz = f.redMul(g);
  } else {
    // Y3 = A * G * (D - C)
    var ny = a.redMul(g).redMul(d.redSub(c));
    // Z3 = c * F * G
    var 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.precomputed && this.precomputed.doubles)
    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);
};

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();
};

// Compatibility with BaseCurve
Point.prototype.toP = Point.prototype.normalize;
Point.prototype.mixedAdd = Point.prototype.add;

},{}],71:[function(require,module,exports){
var curve = exports;

curve.base = require(69);
curve.short = require(73);
curve.mont = require(72);
curve.edwards = require(70);

},{}],72:[function(require,module,exports){
var assert = require(2);
var curve = require(71);
var elliptic = require(68);
var bn = require(67);
var inherits = require(88);
var Base = curve.base;

var getNAF = elliptic.utils.getNAF;

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.point = function point(x, z) {
  return new Point(this, x, z);
};

MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
}

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);

Point.prototype.precompute = function precompute() {
  // No-op
};

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(p) {
  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.ishrn(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.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();
};

},{}],73:[function(require,module,exports){
var assert = require(2);
var curve = require(71);
var elliptic = require(68);
var bn = require(67);
var inherits = require(88);
var Base = curve.base;

var getNAF = elliptic.utils.getNAF;

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 one = new bn(1).toRed(red);

  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.shrn(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;
  while (u.cmpn(0) !== 0) {
    var q = v.div(u);
    var r = v.sub(q.mul(u));
    var 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.sign) {
    a1 = a1.neg();
    b1 = b1.neg();
  }
  if (a2.sign) {
    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.point = function point(x, y, isRed) {
  return new Point(this, x, y, isRed);
};

ShortCurve.prototype.pointFromX = function pointFromX(odd, x) {
  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();

  // 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.jpoint = function jpoint(x, y, z) {
  return new JPoint(this, x, y, z);
};

ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
  return Point.fromJSON(this, obj, red);
};

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) {
  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.sign) {
      split.k1.sign = !split.k1.sign;
      p = p.neg(true);
    }
    if (split.k2.sign) {
      split.k2.sign = !split.k2.sign;
      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);

  // 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);

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;
    function endoMul(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.precomputed && this.precomputed.doubles)
    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.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;
    function negate(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);

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() {
  // Z = 1
  if (this.zOne) {
    // http://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
    var nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    var ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2*Y1
    var nz = this.y.redAdd(this.y);
  } else {
    // http://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
    var nx = f.redISub(d).redISub(d);
    // Y3 = E * (D - X3) - 8 * C
    var ny = e.redMul(d.redISub(nx)).redISub(c8);
    // Z3 = 2 * Y1 * Z1
    var nz = this.y.redMul(this.z);
    nz = nz.redIAdd(nz);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._threeDbl = function _threeDbl() {
  // Z = 1
  if (this.zOne) {
    // http://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
    var nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    var ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2 * Y1
    var nz = this.y.redAdd(this.y);
  } else {
    // http://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);
    var nx = alpha.redSqr().redISub(beta8);
    // Z3 = (Y1 + Z1)^2 - gamma - delta
    var 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);
    var 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;
  var tinv = this.curve.tinv;

  // 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);

  // http://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.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;
};

},{}],74:[function(require,module,exports){
var curves = exports;

var assert = require(2);
var hash = require(81);
var bn = require(67);
var elliptic = require(68);

function PresetCurve(options) {
  if (options.type === 'short')
    this.curve = new elliptic.curve.short(options);
  else if (options.type === 'edwards')
    this.curve = new elliptic.curve.edwards(options);
  else
    this.curve = new elliptic.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('curve25519', {
  type: 'mont',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '76d06',
  b: '0',
  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'
  ]
});

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',
    {
      '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',
            '2804dfa44805a1e4d7c99cc9762808b092cc584d95ff3b511488e4e74efdf6e7'
          ],
          [
            'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d',
            'eed1de7f638e00771e89768ca3ca94472d155e80af322ea9fcb4291b6ac9ec78'
          ],
          [
            'a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070',
            '7370f91cfb67e4f5081809fa25d40f9b1735dbf7c0a11a130c0d1a041e177ea1'
          ],
          [
            '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4',
            'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150'
          ],
          [
            '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da',
            '662a9f2dba063986de1d90c2b6be215dbbea2cfe95510bfdf23cbf79501fff82'
          ],
          [
            'e4f3fb0176af85d65ff99ff9198c36091f48e86503681e3e6686fd5053231e11',
            '1e63633ad0ef4f1c1661a6d0ea02b7286cc7e74ec951d1c9822c38576feb73bc'
          ],
          [
            '8c00fa9b18ebf331eb961537a45a4266c7034f2f0d4e1d0716fb6eae20eae29e',
            'efa47267fea521a1a9dc343a3736c974c2fadafa81e36c54e7d2a4c66702414b'
          ],
          [
            'e7a26ce69dd4829f3e10cec0a9e98ed3143d084f308b92c0997fddfc60cb3e41',
            '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51'
          ],
          [
            'b6459e0ee3662ec8d23540c223bcbdc571cbcb967d79424f3cf29eb3de6b80ef',
            '67c876d06f3e06de1dadf16e5661db3c4b3ae6d48e35b2ff30bf0b61a71ba45'
          ],
          [
            'd68a80c8280bb840793234aa118f06231d6f1fc67e73c5a5deda0f5b496943e8',
            'db8ba9fff4b586d00c4b1f9177b0e28b5b0e7b8f7845295a294c84266b133120'
          ],
          [
            '324aed7df65c804252dc0270907a30b09612aeb973449cea4095980fc28d3d5d',
            '648a365774b61f2ff130c0c35aec1f4f19213b0c7e332843967224af96ab7c84'
          ],
          [
            '4df9c14919cde61f6d51dfdbe5fee5dceec4143ba8d1ca888e8bd373fd054c96',
            '35ec51092d8728050974c23a1d85d4b5d506cdc288490192ebac06cad10d5d'
          ],
          [
            '9c3919a84a474870faed8a9c1cc66021523489054d7f0308cbfc99c8ac1f98cd',
            'ddb84f0f4a4ddd57584f044bf260e641905326f76c64c8e6be7e5e03d4fc599d'
          ],
          [
            '6057170b1dd12fdf8de05f281d8e06bb91e1493a8b91d4cc5a21382120a959e5',
            '9a1af0b26a6a4807add9a2daf71df262465152bc3ee24c65e899be932385a2a8'
          ],
          [
            'a576df8e23a08411421439a4518da31880cef0fba7d4df12b1a6973eecb94266',
            '40a6bf20e76640b2c92b97afe58cd82c432e10a7f514d9f3ee8be11ae1b28ec8'
          ],
          [
            '7778a78c28dec3e30a05fe9629de8c38bb30d1f5cf9a3a208f763889be58ad71',
            '34626d9ab5a5b22ff7098e12f2ff580087b38411ff24ac563b513fc1fd9f43ac'
          ],
          [
            '928955ee637a84463729fd30e7afd2ed5f96274e5ad7e5cb09eda9c06d903ac',
            'c25621003d3f42a827b78a13093a95eeac3d26efa8a8d83fc5180e935bcd091f'
          ],
          [
            '85d0fef3ec6db109399064f3a0e3b2855645b4a907ad354527aae75163d82751',
            '1f03648413a38c0be29d496e582cf5663e8751e96877331582c237a24eb1f962'
          ],
          [
            'ff2b0dce97eece97c1c9b6041798b85dfdfb6d8882da20308f5404824526087e',
            '493d13fef524ba188af4c4dc54d07936c7b7ed6fb90e2ceb2c951e01f0c29907'
          ],
          [
            '827fbbe4b1e880ea9ed2b2e6301b212b57f1ee148cd6dd28780e5e2cf856e241',
            'c60f9c923c727b0b71bef2c67d1d12687ff7a63186903166d605b68baec293ec'
          ],
          [
            'eaa649f21f51bdbae7be4ae34ce6e5217a58fdce7f47f9aa7f3b58fa2120e2b3',
            'be3279ed5bbbb03ac69a80f89879aa5a01a6b965f13f7e59d47a5305ba5ad93d'
          ],
          [
            'e4a42d43c5cf169d9391df6decf42ee541b6d8f0c9a137401e23632dda34d24f',
            '4d9f92e716d1c73526fc99ccfb8ad34ce886eedfa8d8e4f13a7f7131deba9414'
          ],
          [
            '1ec80fef360cbdd954160fadab352b6b92b53576a88fea4947173b9d4300bf19',
            'aeefe93756b5340d2f3a4958a7abbf5e0146e77f6295a07b671cdc1cc107cefd'
          ],
          [
            '146a778c04670c2f91b00af4680dfa8bce3490717d58ba889ddb5928366642be',
            'b318e0ec3354028add669827f9d4b2870aaa971d2f7e5ed1d0b297483d83efd0'
          ],
          [
            'fa50c0f61d22e5f07e3acebb1aa07b128d0012209a28b9776d76a8793180eef9',
            '6b84c6922397eba9b72cd2872281a68a5e683293a57a213b38cd8d7d3f4f2811'
          ],
          [
            'da1d61d0ca721a11b1a5bf6b7d88e8421a288ab5d5bba5220e53d32b5f067ec2',
            '8157f55a7c99306c79c0766161c91e2966a73899d279b48a655fba0f1ad836f1'
          ],
          [
            'a8e282ff0c9706907215ff98e8fd416615311de0446f1e062a73b0610d064e13',
            '7f97355b8db81c09abfb7f3c5b2515888b679a3e50dd6bd6cef7c73111f4cc0c'
          ],
          [
            '174a53b9c9a285872d39e56e6913cab15d59b1fa512508c022f382de8319497c',
            'ccc9dc37abfc9c1657b4155f2c47f9e6646b3a1d8cb9854383da13ac079afa73'
          ],
          [
            '959396981943785c3d3e57edf5018cdbe039e730e4918b3d884fdff09475b7ba',
            '2e7e552888c331dd8ba0386a4b9cd6849c653f64c8709385e9b8abf87524f2fd'
          ],
          [
            'd2a63a50ae401e56d645a1153b109a8fcca0a43d561fba2dbb51340c9d82b151',
            'e82d86fb6443fcb7565aee58b2948220a70f750af484ca52d4142174dcf89405'
          ],
          [
            '64587e2335471eb890ee7896d7cfdc866bacbdbd3839317b3436f9b45617e073',
            'd99fcdd5bf6902e2ae96dd6447c299a185b90a39133aeab358299e5e9faf6589'
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            '4cb04437f391ed73111a13cc1d4dd0db1693465c2240480d8955e8592f27447a'
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            'd3ae41047dd7ca065dbf8ed77b992439983005cd72e16d6f996a5316d36966bb',
            'bd1aeb21ad22ebb22a10f0303417c6d964f8cdd7df0aca614b10dc14d125ac46'
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      }
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  ]
});

},{}],75:[function(require,module,exports){
var assert = require(2);
var bn = require(67);
var elliptic = require(68);
var utils = elliptic.utils;

var KeyPair = require(76);
var Signature = require(77);

function EC(options) {
  if (!(this instanceof EC))
    return new EC(options);

  // Shortcut `elliptic.ec(curve-name)`
  if (typeof options === 'string')
    options = elliptic.curves[options];

  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
  if (options instanceof elliptic.curves.PresetCurve)
    options = { curve: options };

  this.curve = options.curve.curve;
  this.n = this.curve.n;
  this.nh = this.n.shrn(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(priv, pub) {
  return new KeyPair(this, priv, pub);
};

EC.prototype.genKeyPair = function genKeyPair(options) {
  if (!options)
    options = {};

  // Instantiate Hmac_DRBG
  var drbg = new elliptic.hmacDRBG({
    hash: this.hash,
    pers: options.pers,
    entropy: options.entropy || elliptic.rand(this.hash.hmacStrength),
    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.keyPair(priv);
  } while (true);
};

EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
  var delta = msg.byteLength() * 8 - this.n.bitLength();
  if (delta > 0)
    msg = msg.shrn(delta);
  if (!truncOnly && msg.cmp(this.n) >= 0)
    return msg.sub(this.n);
  else
    return msg;
};

EC.prototype.sign = function sign(msg, key, options) {
  key = this.keyPair(key, 'hex');
  msg = this._truncateToN(new bn(msg, 16));
  if (!options)
    options = {};

  // Zero-extend key to provide enough entropy
  var bytes = this.n.byteLength();
  var bkey = key.getPrivate().toArray();
  for (var i = bkey.length; i < 21; i++)
    bkey.unshift(0);

  // Zero-extend nonce to have the same byte size as N
  var nonce = msg.toArray();
  for (var i = nonce.length; i < bytes; i++)
    nonce.unshift(0);

  // Instantiate Hmac_DRBG
  var drbg = new elliptic.hmacDRBG({
    hash: this.hash,
    entropy: bkey,
    nonce: nonce
  });

  // Number of bytes to generate
  var ns1 = this.n.sub(new bn(1));
  do {
    var k = 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 r = kp.getX().mod(this.n);
    if (r.cmpn(0) === 0)
      continue;

    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg)).mod(this.n);
    if (s.cmpn(0) === 0)
      continue;

    // Use complement of `s`, if it is > `n / 2`
    if (options.canonical && s.cmp(this.nh) > 0)
      s = this.n.sub(s);

    return new Signature(r, s);
  } while (true);
};

EC.prototype.verify = function verify(msg, signature, key) {
  msg = this._truncateToN(new bn(msg, 16));
  key = this.keyPair(key, 'hex');
  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).mod(this.n);
  var u2 = sinv.mul(r).mod(this.n);

  var p = this.g.mulAdd(u1, key.getPublic(), u2);
  if (p.isInfinity())
    return false;

  return p.getX().mod(this.n).cmp(r) === 0;
};

},{}],76:[function(require,module,exports){
var assert = require(2);
var bn = require(67);

var elliptic = require(68);
var utils = elliptic.utils;

function KeyPair(ec, priv, pub) {
  if (priv instanceof KeyPair)
    return priv;
  if (pub instanceof KeyPair)
    return pub;

  if (!priv) {
    priv = pub;
    pub = null;
  }
  if (priv !== null && typeof priv === 'object') {
    if (priv.x) {
      // KeyPair(public)
      pub = priv;
      priv = null;
    } else if (priv.priv || priv.pub) {
      // KeyPair({ priv: ..., pub: ... })
      pub = priv.pub;
      priv = priv.priv;
    }
  }

  this.ec = ec;
  this.priv = null;
  this.pub = null;

  // KeyPair(public, 'hex')
  if (this._importPublicHex(priv, pub))
    return;

  if (pub === 'hex')
    pub = null;

  // KeyPair(priv, pub)
  if (priv)
    this._importPrivate(priv);
  if (pub)
    this._importPublic(pub);
}
module.exports = KeyPair;

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) {
  if (!this.pub)
    this.pub = this.ec.g.mul(this.priv);

  // compact is optional argument
  if (typeof compact === 'string') {
    enc = compact;
    compact = null;
  }

  if (!enc)
    return this.pub;

  var len = this.ec.curve.p.byteLength();
  var x = this.pub.getX().toArray();

  for (var i = x.length; i < len; i++)
    x.unshift(0);

  if (compact) {
    var res = [ this.pub.getY().isEven() ? 0x02 : 0x03 ].concat(x);
  } else {
    var y = this.pub.getY().toArray();
    for (var i = y.length; i < len; i++)
      y.unshift(0);
    var res = [ 0x04 ].concat(x, y);
  }
  return utils.encode(res, enc);
};

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) {
  this.priv = new bn(key, 16);

  // Ensure that the priv won't be bigger than n, otherwise we may fail
  // in fixed multiplication method
  this.priv = this.priv.mod(this.ec.curve.n);
};

KeyPair.prototype._importPublic = function _importPublic(key) {
  this.pub = this.ec.curve.point(key.x, key.y);
};

KeyPair.prototype._importPublicHex = function _importPublic(key, enc) {
  key = utils.toArray(key, enc);
  var len = this.ec.curve.p.byteLength();
  if (key[0] === 0x04 && key.length - 1 === 2 * len) {
    this.pub = this.ec.curve.point(
      key.slice(1, 1 + len),
      key.slice(1 + len, 1 + 2 * len));
  } else if ((key[0] === 0x02 || key[0] === 0x03) && key.length - 1 === len) {
    this.pub = this.ec.curve.pointFromX(key[0] === 0x03,
                                        key.slice(1, 1 +len));
  } else {
    return false;
  }

  return true;
};

// ECDH
KeyPair.prototype.derive = function derive(pub) {
  return pub.mul(this.priv).getX();
};

// ECDSA
KeyPair.prototype.sign = function sign(msg) {
  return this.ec.sign(msg, this);
};

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()) + ' >';
};

},{}],77:[function(require,module,exports){
var assert = require(2);
var bn = require(67);

var elliptic = require(68);
var utils = elliptic.utils;

function Signature(r, s) {
  if (r instanceof Signature)
    return r;

  if (this._importDER(r, s))
    return;

  assert(r && s, 'Signature without r or s');
  this.r = new bn(r, 16);
  this.s = new bn(s, 16);
}
module.exports = Signature;

Signature.prototype._importDER = function _importDER(data, enc) {
  data = utils.toArray(data, enc);
  if (data.length < 6 || data[0] !== 0x30 || data[2] !== 0x02)
    return false;
  var total = data[1];
  if (1 + total > data.length)
    return false;
  var rlen = data[3];
  // Short length notation
  if (rlen >= 0x80)
    return false;
  if (4 + rlen + 2 >= data.length)
    return false;
  if (data[4 + rlen] !== 0x02)
    return false;
  var slen = data[5 + rlen];
  // Short length notation
  if (slen >= 0x80)
    return false;
  if (4 + rlen + 2 + slen > data.length)
    return false;

  this.r = new bn(data.slice(4, 4 + rlen));
  this.s = new bn(data.slice(4 + rlen + 2, 4 + rlen + 2 + slen));

  return true;
};

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);

  var total = r.length + s.length + 4;
  var res = [ 0x30, total, 0x02, r.length ];
  res = res.concat(r, [ 0x02, s.length ], s);
  return utils.encode(res, enc);
};

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

var hash = require(81);
var elliptic = require(68);
var utils = elliptic.utils;

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);
  var nonce = utils.toArray(options.nonce, options.nonceEnc);
  var pers = utils.toArray(options.pers, options.persEnc);
  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.toBuffer(entropy, entropyEnc);
  add = utils.toBuffer(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);
    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);
};

},{}],79:[function(require,module,exports){
var assert = require(2);
var bn = require(67);

var utils = exports;

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg === 'string') {
    if (!enc) {
      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);
      }
    } else 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++)
      res[i] = msg[i] | 0;
  }
  return res;
}
utils.toArray = toArray;

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;
};

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.zero2 = zero2;

// 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.ishrn(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.ishrn(1);
    k2.ishrn(1);
  }

  return jsf;
}
utils.getJSF = getJSF;

},{}],80:[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);
};

if (typeof window === 'object') {
  if (window.crypto && window.crypto.getRandomValues) {
    // Modern browsers
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      window.crypto.getRandomValues(arr);
      return arr;
    };
  } else if (window.msCrypto && window.msCrypto.getRandomValues) {
    // IE
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      window.msCrypto.getRandomValues(arr);
      return arr;
    };
  } else {
    // Old junk
    Rand.prototype._rand = function() {
      throw new Error('Not implemented yet');
    };
  }
} else {
  // Node.js or Web worker
  try {
    var crypto = require('cry' + 'pto');

    Rand.prototype._rand = function _rand(n) {
      return crypto.randomBytes(n);
    };
  } catch (e) {
    // Emulate crypto API using randy
    Rand.prototype._rand = function _rand(n) {
      var res = new Uint8Array(n);
      for (var i = 0; i < res.length; i++)
        res[i] = this.rand.getByte();
      return res;
    };
  }
}

},{}],81:[function(require,module,exports){
var hash = exports;

hash.utils = require(86);
hash.common = require(82);
hash.sha = require(85);
hash.ripemd = require(84);
hash.hmac = require(83);

// Proxy hash functions to the main object
hash.sha256 = hash.sha.sha256;
hash.sha224 = hash.sha.sha224;
hash.ripemd160 = hash.ripemd.ripemd160;

},{}],82:[function(require,module,exports){
var hash = require(81);
var utils = hash.utils;
var assert = utils.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.endian = 'big';
}
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.blockSize / 8) {
    msg = this.pending;

    // Process pending data in blocks
    var r = msg.length % (this.blockSize / 8);
    this.pending = msg.slice(msg.length - r, msg.length);
    if (this.pending.length === 0)
      this.pending = null;

    msg = utils.join32(msg.slice(0, msg.length - r), this.endian);
    for (var i = 0; i < msg.length; i += this.blockSize / 32)
      this._update(msg.slice(i, i + this.blockSize / 32));
  }

  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.blockSize / 8;
  var k = bytes - ((len + 8) % bytes);
  var res = new Array(k + 8);
  res[0] = 0x80;
  for (var i = 1; i < k; i++)
    res[i] = 0;

  // Append length
  len <<= 3;
  if (this.endian === 'big') {
    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;
  }

  return res;
}

},{}],83:[function(require,module,exports){
var hmac = exports;

var hash = require(81);
var utils = hash.utils;
var assert = utils.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._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);

  var okey = key.slice();
  for (var i = 0; i < key.length; i++) {
    key[i] ^= 0x36;
    okey[i] ^= 0x5c;
  }

  this.hash = {
    inner: new this.Hash().update(key),
    outer: new this.Hash().update(okey)
  };
};

Hmac.prototype.update = function update(msg, enc) {
  this.hash.inner.update(msg, enc);
  return this;
};

Hmac.prototype.digest = function digest(enc) {
  this.hash.outer.update(this.hash.inner.digest());
  return this.hash.outer.digest(enc);
};

},{}],84:[function(require,module,exports){
var hash = require(81);
var utils = hash.utils;

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_3 = utils.sum32_3;
var sum32_4 = utils.sum32_4;
var BlockHash = hash.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.prototype._update = function update(msg) {
  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]], 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]], 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
];

},{}],85:[function(require,module,exports){
var hash = require(81);
var utils = hash.utils;
var assert = utils.assert;

var rotr32 = utils.rotr32;
var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_4 = utils.sum32_4;
var sum32_5 = utils.sum32_5;
var BlockHash = hash.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;
}
utils.inherits(SHA256, BlockHash);
exports.sha256 = SHA256;

SHA256.blockSize = 512;
SHA256.outSize = 256;
SHA256.hmacStrength = 192;

SHA256.prototype._update = function _update(msg) {
  var W = new Array(64);
  for (var i = 0; i < 16; i++)
    W[i] = msg[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 (var 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');
};

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);
exports.sha224 = SHA224;

SHA224.blockSize = 512;
SHA224.outSize = 224;
SHA224.hmacStrength = 192;

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');
};

function ch32(x, y, z) {
  return (x & y) ^ ((~x) & z);
}

function maj32(x, y, z) {
  return (x & y) ^ (x & z) ^ (y & z);
}

function s0_256(x) {
  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
}

function s1_256(x) {
  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
}

function g0_256(x) {
  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
}

function g1_256(x) {
  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
}

},{}],86:[function(require,module,exports){
var utils = exports;

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg === 'string') {
    if (!enc) {
      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);
      }
    } else 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++)
      res[i] = msg[i] | 0;
  }
  return res;
}
utils.toArray = toArray;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
utils.toHex = toHex;

function toHex32(msg, endian) {
  var res = '';
  for (var i = 0; i < msg.length; i++) {
    var w = msg[i];
    if (endian === 'little') {
      w = (w >>> 24) |
          ((w >>> 8) & 0xff00) |
          ((w << 8) & 0xff0000) |
          ((w & 0xff) << 24);
      if (w < 0)
        w += 0x100000000;
    }
    res += zero8(w.toString(16));
  }
  return res;
}
utils.toHex32 = toHex32;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.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;
}
utils.zero8 = zero8;

function join32(msg, endian) {
  assert(msg.length % 4 === 0);
  var res = new Array(msg.length / 4);
  for (var i = 0, k = 0; 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];
    if (w < 0)
      w += 0x100000000;
    res[i] = w;
  }
  return res;
}
utils.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;
}
utils.split32 = split32;

function rotr32(w, b) {
  return (w >>> b) | (w << (32 - b));
}
utils.rotr32 = rotr32;

function rotl32(w, b) {
  return (w << b) | (w >>> (32 - b));
}
utils.rotl32 = rotl32;

function sum32(a, b) {
  var r = (a + b) & 0xffffffff;
  if (r < 0)
    r += 0x100000000;
  return r;
}
utils.sum32 = sum32;

function sum32_3(a, b, c) {
  var r = (a + b + c) & 0xffffffff;
  if (r < 0)
    r += 0x100000000;
  return r;
}
utils.sum32_3 = sum32_3;

function sum32_4(a, b, c, d) {
  var r = (a + b + c + d) & 0xffffffff;
  if (r < 0)
    r += 0x100000000;
  return r;
}
utils.sum32_4 = sum32_4;

function sum32_5(a, b, c, d, e) {
  var r = (a + b + c + d + e) & 0xffffffff;
  if (r < 0)
    r += 0x100000000;
  return r;
}
utils.sum32_5 = sum32_5;

function assert(cond, msg) {
  if (!cond)
    throw new Error(msg || 'Assertion failed');
}
utils.assert = assert;

// Shamelessly copied from browserify
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  utils.inherits = 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
  utils.inherits = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],87:[function(require,module,exports){
module.exports={
  "name": "elliptic",
  "version": "0.15.14",
  "description": "EC cryptography",
  "main": "lib/elliptic.js",
  "scripts": {
    "test": "mocha --reporter=spec test/*-test.js"
  },
  "repository": {
    "type": "git",
    "url": "git@github.com:indutny/elliptic"
  },
  "keywords": [
    "EC",
    "Elliptic",
    "curve",
    "Cryptography"
  ],
  "author": {
    "name": "Fedor Indutny",
    "email": "fedor@indutny.com"
  },
  "license": "MIT",
  "bugs": {
    "url": "https://github.com/indutny/elliptic/issues"
  },
  "homepage": "https://github.com/indutny/elliptic",
  "devDependencies": {
    "browserify": "^3.44.2",
    "mocha": "^1.18.2",
    "uglify-js": "^2.4.13"
  },
  "dependencies": {
    "bn.js": "^0.15.0",
    "brorand": "^1.0.1",
    "hash.js": "^0.2.0",
    "inherits": "^2.0.1"
  },
  "gitHead": "e080857a1604369909d53f2f187a3b69eba113ed",
  "_id": "elliptic@0.15.14",
  "_shasum": "4d8cc82f030f9c7646ac60a729f0f793e083be6e",
  "_from": "elliptic@^0.15.14",
  "_npmVersion": "2.1.6",
  "_nodeVersion": "0.10.33",
  "_npmUser": {
    "name": "indutny",
    "email": "fedor@indutny.com"
  },
  "maintainers": [
    {
      "name": "indutny",
      "email": "fedor@indutny.com"
    }
  ],
  "dist": {
    "shasum": "4d8cc82f030f9c7646ac60a729f0f793e083be6e",
    "tarball": "http://registry.npmjs.org/elliptic/-/elliptic-0.15.14.tgz"
  },
  "directories": {},
  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-0.15.14.tgz"
}

},{}],88:[function(require,module,exports){
module.exports=require(9)
},{}],89:[function(require,module,exports){
exports.strip = function strip(artifact) {
  artifact = artifact.toString()
  var startRegex = /^-----BEGIN (.*)-----\n/;
  var match = startRegex.exec(artifact);
  var tag = match[1];
  var endRegex = new RegExp("\n-----END " + tag + "-----(\n*)$");
  var base64 = artifact.slice(match[0].length).replace(endRegex, "").replace(/\n/g, "");
  return {tag: tag, base64: base64};
};

// http://stackoverflow.com/a/7033705
var wrap = function wrap(str, l) {
  var chunks = [];
  while (str) {
    if (str.length < l) {
      chunks.push(str);
      break;
    }
    else {
      chunks.push(str.substr(0, l));
      str = str.substr(l);
    }
  }
  return chunks.join("\n");
}

exports.assemble = function assemble(info) {
  var tag = info.tag;
  var base64 = info.base64;
  var startLine = "-----BEGIN " + tag + "-----";
  var endLine = "-----END " + tag + "-----";
  return startLine + "\n" + wrap(base64, 64) + "\n" + endLine + "\n";
}
},{}],90:[function(require,module,exports){
module.exports=require(13)
},{}],91:[function(require,module,exports){
module.exports=require(14)
},{}],92:[function(require,module,exports){
module.exports=require(15)
},{}],93:[function(require,module,exports){
module.exports=require(16)
},{}],94:[function(require,module,exports){
module.exports=require(17)
},{}],95:[function(require,module,exports){
module.exports=require(18)
},{}],96:[function(require,module,exports){
module.exports=require(10)
},{}],97:[function(require,module,exports){
module.exports=require(24)
},{}],98:[function(require,module,exports){
module.exports=require(20)
},{}],99:[function(require,module,exports){
(function (Buffer){
var pemstrip = require(89);
var asn1 = require(51);
var aesid = require(49);
module.exports = parseKeys;

function parseKeys(buffer, crypto) {
	var password;
	if (typeof buffer === 'object' && !Buffer.isBuffer(buffer)) {
		password = buffer.passphrase;
		buffer = buffer.key;
	}
	var stripped = pemstrip.strip(buffer);
	var type = stripped.tag;
	var data = new Buffer(stripped.base64, 'base64');
	var subtype,ndata;
	switch (type) {
		case 'PUBLIC KEY':
		  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':
		  		return {
		  			type: 'ec',
		  			data:  asn1.ECPublicKey.decode(data, 'der')
		  		};
		  	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(crypto, data, password);
		  //falling 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':
		  	  ndata =  asn1.ECPrivateWrap.decode(data, 'der');
		  	  return {
		  	  	curve: ndata.algorithm.curve,
		  	  	privateKey: asn1.ECPrivateKey.decode(ndata.subjectPrivateKey, 'der').privateKey
		  	  };
		  	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 '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);
	}
}
function decrypt(crypto, data, password) {
  var salt = data.algorithm.decrypt.kde.kdeparams.salt;
  var iters = data.algorithm.decrypt.kde.kdeparams.iters;
  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 = crypto.pbkdf2Sync(password, salt, iters, keylen);
  var cipher = crypto.createDecipheriv(algo, key, iv);
  var out = [];
  out.push(cipher.update(cipherText));
  out.push(cipher.final());
  return Buffer.concat(out);
}
}).call(this,require(4).Buffer)
},{}],100:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var parseKeys = require(99);
var bn = require(67);
var elliptic = require(68);
module.exports = sign;
function sign(hash, key, crypto) {
  var priv = parseKeys(key, crypto);
  if (priv.curve) {
    return ecSign(hash, priv, crypto);
  }
  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);
  if (out.length < len) {
    var prefix = new Buffer(len - out.length);
    prefix.fill(0);
    out = Buffer.concat([prefix, out], len);
  }
  return out;
}
function crt(msg, priv) {
  var c1 = new bn(msg).toRed(bn.mont(priv.prime1));
  var c2 = new bn(msg).toRed(bn.mont(priv.prime2));
  var qinv = new bn(priv.coefficient);
  var p = new bn(priv.prime1);
  var q = new bn(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).mod(p);
  h.imul(q);
  m2.iadd(h);
  return new Buffer(m2.toArray());
}
function ecSign(hash, priv, crypto) {
  elliptic.rand = crypto.randomBytes;
  var curve;
  if (priv.curve.join('.')  === '1.3.132.0.10') {
    curve = new elliptic.ec('secp256k1');
  }
  var key = curve.genKeyPair();
  key._importPrivate(priv.privateKey);
  var out = key.sign(hash);
  return new Buffer(out.toDER());
}
}).call(this,require(4).Buffer)
},{}],101:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var parseKeys = require(99);
var elliptic = require(68);
var bn = require(67);
module.exports = verify;
function verify(sig, hash, key) {
  var pub = parseKeys(key);
  if (pub.type === 'ec') {
    return ecVerify(sig, hash, pub);
  }
  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());
  sig = sig.slice(sig.length - hash.length);
  var out = 0;
  var len = sig.length;
  var i = -1;
  while (++i < len) {
    out += (sig[i] ^ hash[i]);
  }
  return !out;
}
function ecVerify(sig, hash, pub) {
  var curve;
  if (pub.data.algorithm.curve.join('.')  === '1.3.132.0.10') {
    curve = new elliptic.ec('secp256k1');
  }
  var pubkey = pub.data.subjectPrivateKey.data;
  return curve.verify(hash.toString('hex'), sig.toString('hex'), pubkey.toString('hex'));
}

}).call(this,require(4).Buffer)
},{}],102:[function(require,module,exports){
(function (Buffer){
var BN = require(105);
var MillerRabin = require(106);
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(103);
module.exports = DH;
function setPublicKey(pub, enc) {
	enc = enc || 'utf8';
	if (!Buffer.isBuffer(pub)) {
		pub = new Buffer(pub, enc);
	}
	this._pub = new BN(pub);
}
function setPrivateKey(priv, enc) {
	enc = enc || 'utf8';
	if (!Buffer.isBuffer(priv)) {
		priv = new Buffer(priv, enc);
	}
	this._priv = new BN(priv);
}
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 gen = generator.toString('hex');
	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 defineError (self, error) {
	try {
		Object.defineProperty(self, 'verifyError', {
	    enumerable: true,
	    value: error,
	    writable: false
	  });
	} catch(e) {
		self.verifyError = error;
	}
}
function DH(prime, generator,crypto, malleable) {
	this.setGenerator(generator);
	this.__prime = new BN(prime);
	this._prime = BN.mont(this.__prime);
	this._pub = void 0;
	this._priv = void 0;
	
	if (malleable) {
		this.setPublicKey = setPublicKey;
		this.setPrivateKey = setPrivateKey;
		defineError(this, checkPrime(this.__prime, generator));
	} else {
		defineError(this, 8);
	}
	this._makeNum = function makeNum() {
		return crypto.randomBytes(192);
	};
}
DH.prototype.generateKeys = function () {
	if (!this._priv) {
		this._priv = new BN(this._makeNum());
	}
	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 returnValue(this._pub, enc);
};
DH.prototype.getPrivateKey = function getPrivateKey(enc) {
	return returnValue(this._priv, enc);
};

DH.prototype.getPrime = function (enc) {
	return returnValue(this.__prime, enc);
};
DH.prototype.getGenerator = function (enc) {
	return returnValue(this._gen, enc);
};
DH.prototype.setGenerator = function (gen, enc) {
	enc = enc || 'utf8';
	if (!Buffer.isBuffer(gen)) {
		gen = new Buffer(gen, enc);
	}
	this._gen = new BN(gen);
};

function returnValue(bn, enc) {
	var buf = new Buffer(bn.toArray());
	if (!enc) {
		return buf;
	} else {
		return buf.toString(enc);
	}
}
}).call(this,require(4).Buffer)
},{}],103:[function(require,module,exports){

module.exports = findPrime;
findPrime.simpleSieve = simpleSieve;
findPrime.fermatTest = fermatTest;
var BN = require(105);
var TWENTYFOUR = new BN(24);
var MillerRabin = require(106);
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)
      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 ,crypto) {
  gen = new BN(gen);
  var runs, comp;
  function generateRandom(bits) {
    runs = -1;
    var r = crypto.randomBytes(Math.ceil(bits / 8));
    r[0] |= 0xc0;
    r[r.length - 1] |= 3;
    var rem;
    var out = new BN(r);
    if (!gen.cmp(TWO)) {
      while (out.mod(TWENTYFOUR).cmp(ELEVEN)) {
        out.iadd(FOUR);
      }
      comp = {
        major: [TWENTYFOUR],
        minor: [TWELVE]
      };
    } else if (!gen.cmp(FIVE)) {
      rem = out.mod(TEN);
      while (rem.cmp(THREE)) {
        out.iadd(FOUR);
        rem = out.mod(TEN);
      }
      comp = {
        major: [FOUR, SIXTEEN],
        minor: [TWO, EIGHT]
      };
    } else {
      comp = {
        major: [FOUR],
        minor: [TWO]
      }
    }
    return out;
  }
  var num = generateRandom(bits);



  var n2 = num.shrn(1);

  while (true) {
    if (num.bitLength() > bits) {
      num = generateRandom(bits);
      n2 = num.shrn(1);
    }
    runs++;
    if (simpleSieve(n2) &&
      fermatTest(n2) &&
      millerRabin.test(n2) &&
      simpleSieve(num) &&
      fermatTest(num) &&
      millerRabin.test(num)) {
      return num;
    }
    num.iadd(comp.major[runs%comp.major.length]);
    n2.iadd(comp.minor[runs%comp.minor.length]);
  }

}
},{}],104:[function(require,module,exports){
(function (Buffer){
var primes = require(108);
var DH = require(102);
var generatePrime = require(103);
module.exports = function (crypto, exports) {
	exports.DiffieHellmanGroup =
    exports.createDiffieHellmanGroup =
    exports.getDiffieHellman = DiffieHellmanGroup;
	function DiffieHellmanGroup(mod) {
		return new DH(new Buffer(primes[mod].prime, 'hex'),
			new Buffer(primes[mod].gen, 'hex'), crypto);
	}
	exports.createDiffieHellman = exports.DiffieHellman = DiffieHellman;
	function DiffieHellman(prime, enc, generator, genc) {
		
		if (Buffer.isBuffer(enc) ||
			(typeof enc === 'string' && ['hex', 'binary', 'base64'].indexOf(enc) === -1)) {
			genc = generator;
			generator = enc
			enc = void 0;
		}
		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, crypto), generator, crypto, true);
		}
		if (!Buffer.isBuffer(prime)) {
			prime = new Buffer(prime, enc);
		}
		
		return new DH(prime, generator, crypto, true);
	};
}
}).call(this,require(4).Buffer)
},{}],105:[function(require,module,exports){
module.exports=require(67)
},{}],106:[function(require,module,exports){
var bn = require(105);
var brorand = require(107);

function MillerRabin(rand) {
  this.rand = rand || new brorand.Rand();
}
module.exports = MillerRabin;

MillerRabin.create = function create(rand) {
  return new MillerRabin(rand);
};

MillerRabin.prototype._rand = function _rand(n) {
  var len = n.bitLength();
  var buf = this.rand.generate(Math.ceil(len / 8));

  // Set low bits
  buf[0] |= 3;

  // Mask high bits
  var mask = len & 0x7;
  if (mask !== 0)
    buf[buf.length - 1] >>= 7 - mask;

  return new bn(buf);
}

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);
  var n2 = n1.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._rand(n2);
    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);
  var n2 = n1.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._rand(n2);

    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 prime;
};

},{}],107:[function(require,module,exports){
module.exports=require(80)
},{}],108:[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": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca18217c32905e462e36ce3be39e772c180e86039b2783a2ec07a28fb5c55df06f4c52c9de2bcbf6955817183995497cea956ae515d2261898fa051015728e5a8aaac42dad33170d04507a33a85521abdf1cba64ecfb850458dbef0a8aea71575d060c7db3970f85a6e1e4c7abf5ae8cdb0933d71e8c94e04a25619dcee3d2261ad2ee6bf12ffa06d98a0864d87602733ec86a64521f2b18177b200cbbe117577a615d6c770988c0bad946e208e24fa074e5ab3143db5bfce0fd108e4b82d120a92108011a723c12a787e6d788719a10bdba5b2699c327186af4e23c1a946834b6150bda2583e9ca2ad44ce8dbbbc2db04de8ef92e8efc141fbecaa6287c59474e6bc05d99b2964fa090c3a2233ba186515be7ed1f612970cee2d7afb81bdd762170481cd0069127d5b05aa993b4ea988d8fddc186ffb7dc90a6c08f4df435c934063199ffffffffffffffff"
    },
    "modp17": {
        "gen": "02",
        "prime": "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"
    },
    "modp18": {
        "gen": "02",
        "prime": "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"
    }
}
},{}],109:[function(require,module,exports){
(function (Buffer){
module.exports = function(crypto) {
  function pbkdf2(password, salt, iterations, keylen, digest, callback) {
    if ('function' === typeof digest) {
      callback = digest
      digest = undefined
    }

    if ('function' !== typeof callback)
      throw new Error('No callback provided to pbkdf2')

    setTimeout(function() {
      var result

      try {
        result = pbkdf2Sync(password, salt, iterations, keylen, digest)
      } catch (e) {
        return callback(e)
      }

      callback(undefined, result)
    })
  }

  function pbkdf2Sync(password, salt, iterations, keylen, digest) {
    if ('number' !== typeof iterations)
      throw new TypeError('Iterations not a number')

    if (iterations < 0)
      throw new TypeError('Bad iterations')

    if ('number' !== typeof keylen)
      throw new TypeError('Key length not a number')

    if (keylen < 0)
      throw new TypeError('Bad key length')

    digest = digest || 'sha1'

    if (!Buffer.isBuffer(password)) password = new Buffer(password)
    if (!Buffer.isBuffer(salt)) salt = new Buffer(salt)

    var hLen, l = 1, r, T
    var DK = new Buffer(keylen)
    var block1 = new Buffer(salt.length + 4)
    salt.copy(block1, 0, 0, salt.length)

    for (var i = 1; i <= l; i++) {
      block1.writeUInt32BE(i, salt.length)

      var U = crypto.createHmac(digest, password).update(block1).digest()

      if (!hLen) {
        hLen = U.length
        T = new Buffer(hLen)
        l = Math.ceil(keylen / hLen)
        r = keylen - (l - 1) * hLen

        if (keylen > (Math.pow(2, 32) - 1) * hLen)
          throw new TypeError('keylen exceeds maximum length')
      }

      U.copy(T, 0, 0, hLen)

      for (var j = 1; j < iterations; j++) {
        U = crypto.createHmac(digest, password).update(U).digest()

        for (var k = 0; k < hLen; k++) {
          T[k] ^= U[k]
        }
      }

      var destPos = (i - 1) * hLen
      var len = (i == l ? r : hLen)
      T.copy(DK, destPos, 0, len)
    }

    return DK
  }

  return {
    pbkdf2: pbkdf2,
    pbkdf2Sync: pbkdf2Sync
  }
}

}).call(this,require(4).Buffer)
},{}],110:[function(require,module,exports){
(function (Buffer){

module.exports = ripemd160



/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/** @preserve
(c) 2012 by Cédric Mesnil. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

// Constants table
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];

var bytesToWords = function (bytes) {
  var words = [];
  for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
    words[b >>> 5] |= bytes[i] << (24 - b % 32);
  }
  return words;
};

var wordsToBytes = function (words) {
  var bytes = [];
  for (var b = 0; b < words.length * 32; b += 8) {
    bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
  }
  return bytes;
};

var processBlock = function (H, M, offset) {

  // Swap endian
  for (var i = 0; i < 16; i++) {
    var offset_i = offset + i;
    var M_offset_i = M[offset_i];

    // Swap
    M[offset_i] = (
        (((M_offset_i << 8)  | (M_offset_i >>> 24)) & 0x00ff00ff) |
        (((M_offset_i << 24) | (M_offset_i >>> 8))  & 0xff00ff00)
    );
  }

  // Working variables
  var al, bl, cl, dl, el;
  var ar, br, cr, dr, er;

  ar = al = H[0];
  br = bl = H[1];
  cr = cl = H[2];
  dr = dl = H[3];
  er = el = H[4];
  // Computation
  var t;
  for (var i = 0; i < 80; i += 1) {
    t = (al +  M[offset+zl[i]])|0;
    if (i<16){
        t +=  f1(bl,cl,dl) + hl[0];
    } else if (i<32) {
        t +=  f2(bl,cl,dl) + hl[1];
    } else if (i<48) {
        t +=  f3(bl,cl,dl) + hl[2];
    } else if (i<64) {
        t +=  f4(bl,cl,dl) + hl[3];
    } else {// if (i<80) {
        t +=  f5(bl,cl,dl) + hl[4];
    }
    t = t|0;
    t =  rotl(t,sl[i]);
    t = (t+el)|0;
    al = el;
    el = dl;
    dl = rotl(cl, 10);
    cl = bl;
    bl = t;

    t = (ar + M[offset+zr[i]])|0;
    if (i<16){
        t +=  f5(br,cr,dr) + hr[0];
    } else if (i<32) {
        t +=  f4(br,cr,dr) + hr[1];
    } else if (i<48) {
        t +=  f3(br,cr,dr) + hr[2];
    } else if (i<64) {
        t +=  f2(br,cr,dr) + hr[3];
    } else {// if (i<80) {
        t +=  f1(br,cr,dr) + hr[4];
    }
    t = t|0;
    t =  rotl(t,sr[i]) ;
    t = (t+er)|0;
    ar = er;
    er = dr;
    dr = rotl(cr, 10);
    cr = br;
    br = t;
  }
  // Intermediate hash value
  t    = (H[1] + cl + dr)|0;
  H[1] = (H[2] + dl + er)|0;
  H[2] = (H[3] + el + ar)|0;
  H[3] = (H[4] + al + br)|0;
  H[4] = (H[0] + bl + cr)|0;
  H[0] =  t;
};

function f1(x, y, z) {
  return ((x) ^ (y) ^ (z));
}

function f2(x, y, z) {
  return (((x)&(y)) | ((~x)&(z)));
}

function f3(x, y, z) {
  return (((x) | (~(y))) ^ (z));
}

function f4(x, y, z) {
  return (((x) & (z)) | ((y)&(~(z))));
}

function f5(x, y, z) {
  return ((x) ^ ((y) |(~(z))));
}

function rotl(x,n) {
  return (x<<n) | (x>>>(32-n));
}

function ripemd160(message) {
  var H = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0];

  if (typeof message == 'string')
    message = new Buffer(message, 'utf8');

  var m = bytesToWords(message);

  var nBitsLeft = message.length * 8;
  var nBitsTotal = message.length * 8;

  // Add padding
  m[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
  m[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
      (((nBitsTotal << 8)  | (nBitsTotal >>> 24)) & 0x00ff00ff) |
      (((nBitsTotal << 24) | (nBitsTotal >>> 8))  & 0xff00ff00)
  );

  for (var i=0 ; i<m.length; i += 16) {
    processBlock(H, m, i);
  }

  // Swap endian
  for (var i = 0; i < 5; i++) {
      // Shortcut
    var H_i = H[i];

    // Swap
    H[i] = (((H_i << 8)  | (H_i >>> 24)) & 0x00ff00ff) |
          (((H_i << 24) | (H_i >>> 8))  & 0xff00ff00);
  }

  var digestbytes = wordsToBytes(H);
  return new Buffer(digestbytes);
}



}).call(this,require(4).Buffer)
},{}],111:[function(require,module,exports){
module.exports = function (Buffer) {

  //prototype class for hash functions
  function Hash (blockSize, finalSize) {
    this._block = new Buffer(blockSize) //new Uint32Array(blockSize/4)
    this._finalSize = finalSize
    this._blockSize = blockSize
    this._len = 0
    this._s = 0
  }

  Hash.prototype.init = function () {
    this._s = 0
    this._len = 0
  }

  Hash.prototype.update = function (data, enc) {
    if ("string" === typeof data) {
      enc = enc || "utf8"
      data = new Buffer(data, enc)
    }

    var l = this._len += data.length
    var s = this._s = (this._s || 0)
    var f = 0
    var buffer = this._block

    while (s < l) {
      var t = Math.min(data.length, f + this._blockSize - (s % this._blockSize))
      var ch = (t - f)

      for (var i = 0; i < ch; i++) {
        buffer[(s % this._blockSize) + i] = data[i + f]
      }

      s += ch
      f += ch

      if ((s % this._blockSize) === 0) {
        this._update(buffer)
      }
    }
    this._s = s

    return this
  }

  Hash.prototype.digest = function (enc) {
    // Suppose the length of the message M, in bits, is l
    var l = this._len * 8

    // Append the bit 1 to the end of the message
    this._block[this._len % this._blockSize] = 0x80

    // and then k zero bits, where k is the smallest non-negative solution to the equation (l + 1 + k) === finalSize mod blockSize
    this._block.fill(0, this._len % this._blockSize + 1)

    if (l % (this._blockSize * 8) >= this._finalSize * 8) {
      this._update(this._block)
      this._block.fill(0)
    }

    // to this append the block which is equal to the number l written in binary
    // TODO: handle case where l is > Math.pow(2, 29)
    this._block.writeInt32BE(l, this._blockSize - 4)

    var hash = this._update(this._block) || this._hash()

    return enc ? hash.toString(enc) : hash
  }

  Hash.prototype._update = function () {
    throw new Error('_update must be implemented by subclass')
  }

  return Hash
}

},{}],112:[function(require,module,exports){
var exports = module.exports = function (alg) {
  var Alg = exports[alg]
  if(!Alg) throw new Error(alg + ' is not supported (we accept pull requests)')
  return new Alg()
}

var Buffer = require(4).Buffer
var Hash   = require(111)(Buffer)

exports.sha1 = require(113)(Buffer, Hash)
exports.sha256 = require(114)(Buffer, Hash)
exports.sha512 = require(115)(Buffer, Hash)

},{}],113:[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(26).inherits

module.exports = function (Buffer, Hash) {

  var A = 0|0
  var B = 4|0
  var C = 8|0
  var D = 12|0
  var E = 16|0

  var W = new (typeof Int32Array === 'undefined' ? Array : Int32Array)(80)

  var POOL = []

  function Sha1 () {
    if(POOL.length)
      return POOL.pop().init()

    if(!(this instanceof Sha1)) return new Sha1()
    this._w = W
    Hash.call(this, 16*4, 14*4)

    this._h = null
    this.init()
  }

  inherits(Sha1, Hash)

  Sha1.prototype.init = function () {
    this._a = 0x67452301
    this._b = 0xefcdab89
    this._c = 0x98badcfe
    this._d = 0x10325476
    this._e = 0xc3d2e1f0

    Hash.prototype.init.call(this)
    return this
  }

  Sha1.prototype._POOL = POOL
  Sha1.prototype._update = function (X) {

    var a, b, c, d, e, _a, _b, _c, _d, _e

    a = _a = this._a
    b = _b = this._b
    c = _c = this._c
    d = _d = this._d
    e = _e = this._e

    var w = this._w

    for(var j = 0; j < 80; j++) {
      var W = w[j] = j < 16 ? X.readInt32BE(j*4)
        : rol(w[j - 3] ^ w[j -  8] ^ w[j - 14] ^ w[j - 16], 1)

      var t = add(
        add(rol(a, 5), sha1_ft(j, b, c, d)),
        add(add(e, W), sha1_kt(j))
      )

      e = d
      d = c
      c = rol(b, 30)
      b = a
      a = t
    }

    this._a = add(a, _a)
    this._b = add(b, _b)
    this._c = add(c, _c)
    this._d = add(d, _d)
    this._e = add(e, _e)
  }

  Sha1.prototype._hash = function () {
    if(POOL.length < 100) POOL.push(this)
    var H = new Buffer(20)
    //console.log(this._a|0, this._b|0, this._c|0, this._d|0, this._e|0)
    H.writeInt32BE(this._a|0, A)
    H.writeInt32BE(this._b|0, B)
    H.writeInt32BE(this._c|0, C)
    H.writeInt32BE(this._d|0, D)
    H.writeInt32BE(this._e|0, E)
    return H
  }

  /*
   * Perform the appropriate triplet combination function for the current
   * iteration
   */
  function sha1_ft(t, b, c, d) {
    if(t < 20) return (b & c) | ((~b) & d);
    if(t < 40) return b ^ c ^ d;
    if(t < 60) return (b & c) | (b & d) | (c & d);
    return b ^ c ^ d;
  }

  /*
   * Determine the appropriate additive constant for the current iteration
   */
  function sha1_kt(t) {
    return (t < 20) ?  1518500249 : (t < 40) ?  1859775393 :
           (t < 60) ? -1894007588 : -899497514;
  }

  /*
   * Add integers, wrapping at 2^32. This uses 16-bit operations internally
   * to work around bugs in some JS interpreters.
   * //dominictarr: this is 10 years old, so maybe this can be dropped?)
   *
   */
  function add(x, y) {
    return (x + y ) | 0
  //lets see how this goes on testling.
  //  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  //  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  //  return (msw << 16) | (lsw & 0xFFFF);
  }

  /*
   * Bitwise rotate a 32-bit number to the left.
   */
  function rol(num, cnt) {
    return (num << cnt) | (num >>> (32 - cnt));
  }

  return Sha1
}

},{}],114:[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(26).inherits

module.exports = function (Buffer, Hash) {

  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, 16*4, 14*4)
  }

  inherits(Sha256, Hash)

  Sha256.prototype.init = function () {

    this._a = 0x6a09e667|0
    this._b = 0xbb67ae85|0
    this._c = 0x3c6ef372|0
    this._d = 0xa54ff53a|0
    this._e = 0x510e527f|0
    this._f = 0x9b05688c|0
    this._g = 0x1f83d9ab|0
    this._h = 0x5be0cd19|0

    this._len = this._s = 0

    return this
  }

  function S (X, n) {
    return (X >>> n) | (X << (32 - n));
  }

  function R (X, n) {
    return (X >>> n);
  }

  function Ch (x, y, z) {
    return ((x & y) ^ ((~x) & z));
  }

  function Maj (x, y, z) {
    return ((x & y) ^ (x & z) ^ (y & z));
  }

  function Sigma0256 (x) {
    return (S(x, 2) ^ S(x, 13) ^ S(x, 22));
  }

  function Sigma1256 (x) {
    return (S(x, 6) ^ S(x, 11) ^ S(x, 25));
  }

  function Gamma0256 (x) {
    return (S(x, 7) ^ S(x, 18) ^ R(x, 3));
  }

  function Gamma1256 (x) {
    return (S(x, 17) ^ S(x, 19) ^ R(x, 10));
  }

  Sha256.prototype._update = function(M) {

    var W = this._w
    var a, b, c, d, e, f, g, h
    var T1, T2

    a = this._a | 0
    b = this._b | 0
    c = this._c | 0
    d = this._d | 0
    e = this._e | 0
    f = this._f | 0
    g = this._g | 0
    h = this._h | 0

    for (var j = 0; j < 64; j++) {
      var w = W[j] = j < 16
        ? M.readInt32BE(j * 4)
        : Gamma1256(W[j - 2]) + W[j - 7] + Gamma0256(W[j - 15]) + W[j - 16]

      T1 = h + Sigma1256(e) + Ch(e, f, g) + K[j] + w

      T2 = Sigma0256(a) + Maj(a, b, c);
      h = g; g = f; f = e; e = d + T1; d = c; c = b; b = a; a = T1 + T2;
    }

    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 = new Buffer(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
  }

  return Sha256

}

},{}],115:[function(require,module,exports){
var inherits = require(26).inherits

module.exports = function (Buffer, Hash) {
  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._a = 0x6a09e667|0
    this._b = 0xbb67ae85|0
    this._c = 0x3c6ef372|0
    this._d = 0xa54ff53a|0
    this._e = 0x510e527f|0
    this._f = 0x9b05688c|0
    this._g = 0x1f83d9ab|0
    this._h = 0x5be0cd19|0

    this._al = 0xf3bcc908|0
    this._bl = 0x84caa73b|0
    this._cl = 0xfe94f82b|0
    this._dl = 0x5f1d36f1|0
    this._el = 0xade682d1|0
    this._fl = 0x2b3e6c1f|0
    this._gl = 0xfb41bd6b|0
    this._hl = 0x137e2179|0

    this._len = this._s = 0

    return this
  }

  function S (X, Xl, n) {
    return (X >>> n) | (Xl << (32 - n))
  }

  function Ch (x, y, z) {
    return ((x & y) ^ ((~x) & z));
  }

  function Maj (x, y, z) {
    return ((x & y) ^ (x & z) ^ (y & z));
  }

  Sha512.prototype._update = function(M) {

    var W = this._w
    var a, b, c, d, e, f, g, h
    var al, bl, cl, dl, el, fl, gl, hl

    a = this._a | 0
    b = this._b | 0
    c = this._c | 0
    d = this._d | 0
    e = this._e | 0
    f = this._f | 0
    g = this._g | 0
    h = this._h | 0

    al = this._al | 0
    bl = this._bl | 0
    cl = this._cl | 0
    dl = this._dl | 0
    el = this._el | 0
    fl = this._fl | 0
    gl = this._gl | 0
    hl = this._hl | 0

    for (var i = 0; i < 80; i++) {
      var j = i * 2

      var Wi, Wil

      if (i < 16) {
        Wi = W[j] = M.readInt32BE(j * 4)
        Wil = W[j + 1] = M.readInt32BE(j * 4 + 4)

      } else {
        var x  = W[j - 15*2]
        var xl = W[j - 15*2 + 1]
        var gamma0  = S(x, xl, 1) ^ S(x, xl, 8) ^ (x >>> 7)
        var gamma0l = S(xl, x, 1) ^ S(xl, x, 8) ^ S(xl, x, 7)

        x  = W[j - 2*2]
        xl = W[j - 2*2 + 1]
        var gamma1  = S(x, xl, 19) ^ S(xl, x, 29) ^ (x >>> 6)
        var gamma1l = S(xl, x, 19) ^ S(x, xl, 29) ^ S(xl, x, 6)

        // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
        var Wi7  = W[j - 7*2]
        var Wi7l = W[j - 7*2 + 1]

        var Wi16  = W[j - 16*2]
        var Wi16l = W[j - 16*2 + 1]

        Wil = gamma0l + Wi7l
        Wi  = gamma0  + Wi7 + ((Wil >>> 0) < (gamma0l >>> 0) ? 1 : 0)
        Wil = Wil + gamma1l
        Wi  = Wi  + gamma1  + ((Wil >>> 0) < (gamma1l >>> 0) ? 1 : 0)
        Wil = Wil + Wi16l
        Wi  = Wi  + Wi16 + ((Wil >>> 0) < (Wi16l >>> 0) ? 1 : 0)

        W[j] = Wi
        W[j + 1] = Wil
      }

      var maj = Maj(a, b, c)
      var majl = Maj(al, bl, cl)

      var sigma0h = S(a, al, 28) ^ S(al, a, 2) ^ S(al, a, 7)
      var sigma0l = S(al, a, 28) ^ S(a, al, 2) ^ S(a, al, 7)
      var sigma1h = S(e, el, 14) ^ S(e, el, 18) ^ S(el, e, 9)
      var sigma1l = S(el, e, 14) ^ S(el, e, 18) ^ S(e, el, 9)

      // t1 = h + sigma1 + ch + K[i] + W[i]
      var Ki = K[j]
      var Kil = K[j + 1]

      var ch = Ch(e, f, g)
      var chl = Ch(el, fl, gl)

      var t1l = hl + sigma1l
      var t1 = h + sigma1h + ((t1l >>> 0) < (hl >>> 0) ? 1 : 0)
      t1l = t1l + chl
      t1 = t1 + ch + ((t1l >>> 0) < (chl >>> 0) ? 1 : 0)
      t1l = t1l + Kil
      t1 = t1 + Ki + ((t1l >>> 0) < (Kil >>> 0) ? 1 : 0)
      t1l = t1l + Wil
      t1 = t1 + Wi + ((t1l >>> 0) < (Wil >>> 0) ? 1 : 0)

      // t2 = sigma0 + maj
      var t2l = sigma0l + majl
      var t2 = sigma0h + maj + ((t2l >>> 0) < (sigma0l >>> 0) ? 1 : 0)

      h  = g
      hl = gl
      g  = f
      gl = fl
      f  = e
      fl = el
      el = (dl + t1l) | 0
      e  = (d + t1 + ((el >>> 0) < (dl >>> 0) ? 1 : 0)) | 0
      d  = c
      dl = cl
      c  = b
      cl = bl
      b  = a
      bl = al
      al = (t1l + t2l) | 0
      a  = (t1 + t2 + ((al >>> 0) < (t1l >>> 0) ? 1 : 0)) | 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._a = (this._a + a + ((this._al >>> 0) < (al >>> 0) ? 1 : 0)) | 0
    this._b = (this._b + b + ((this._bl >>> 0) < (bl >>> 0) ? 1 : 0)) | 0
    this._c = (this._c + c + ((this._cl >>> 0) < (cl >>> 0) ? 1 : 0)) | 0
    this._d = (this._d + d + ((this._dl >>> 0) < (dl >>> 0) ? 1 : 0)) | 0
    this._e = (this._e + e + ((this._el >>> 0) < (el >>> 0) ? 1 : 0)) | 0
    this._f = (this._f + f + ((this._fl >>> 0) < (fl >>> 0) ? 1 : 0)) | 0
    this._g = (this._g + g + ((this._gl >>> 0) < (gl >>> 0) ? 1 : 0)) | 0
    this._h = (this._h + h + ((this._hl >>> 0) < (hl >>> 0) ? 1 : 0)) | 0
  }

  Sha512.prototype._hash = function () {
    var H = new Buffer(64)

    function writeInt64BE(h, l, offset) {
      H.writeInt32BE(h, offset)
      H.writeInt32BE(l, offset + 4)
    }

    writeInt64BE(this._a, this._al, 0)
    writeInt64BE(this._b, this._bl, 8)
    writeInt64BE(this._c, this._cl, 16)
    writeInt64BE(this._d, this._dl, 24)
    writeInt64BE(this._e, this._el, 32)
    writeInt64BE(this._f, this._fl, 40)
    writeInt64BE(this._g, this._gl, 48)
    writeInt64BE(this._h, this._hl, 56)

    return H
  }

  return Sha512

}

},{}],116:[function(require,module,exports){
var pbkdf2Export = require(109)

module.exports = function (crypto, exports) {
  exports = exports || {}

  var exported = pbkdf2Export(crypto)

  exports.pbkdf2 = exported.pbkdf2
  exports.pbkdf2Sync = exported.pbkdf2Sync

  return exports
}

},{}],117:[function(require,module,exports){
(function (global,Buffer){
(function() {
  var g = ('undefined' === typeof window ? global : window) || {}
  _crypto = (
    g.crypto || g.msCrypto || require(3)
  )
  module.exports = function(size) {
    // Modern Browsers
    if(_crypto.getRandomValues) {
      var bytes = new Buffer(size); //in browserify, this is an extended Uint8Array
      /* This will not work in older browsers.
       * See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
       */
    
      _crypto.getRandomValues(bytes);
      return bytes;
    }
    else if (_crypto.randomBytes) {
      return _crypto.randomBytes(size)
    }
    else
      throw new Error(
        'secure random number generation not supported by this browser\n'+
        'use chrome, FireFox or Internet Explorer 11'
      )
  }
}())

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require(4).Buffer)
},{}],118:[function(require,module,exports){

/*
 * seedgen
 * @license MIT
 * https://github.com/Rob-ot/seedgen
 */

var crypto = require(32)
var bignum = require(1)

module.exports = function(source) {
  if (!source) throw new Error('No params specified to seed expander')

  var sourceKeys = Object.keys(source)
  var numSources = sourceKeys.length

  var sourcesByIndex = []
  var numCombinations = bignum(1)
  for (var i = 0; i < numSources; i++) {
    var name = sourceKeys[i]
    var size = source[name]

    numCombinations = numCombinations.mul(size)

    sourcesByIndex[i] = {
      name: name,
      size: size
    }
  }

  var run = function(key, opts) {
    if (typeof key !== 'string') return new Error('Key was not a string')
    if (!opts) opts = {}

    var buffer = crypto.createHash('sha1').update(key).digest()
    var num = bignum.fromBuffer(buffer)
    return run.inOrder(num)
  }

  run.numCombinations = numCombinations

  run.inOrder = function (index) {
    if (!(typeof index === 'number' || typeof index === 'object' && index.mod)) return new Error('Index was not a number')

    var result = {}
    var modded = index.mod ? index.mod(numCombinations) : index % numCombinations

    for (var sourceIndex = 0; sourceIndex < sourcesByIndex.length; sourceIndex++) {
      var source = sourcesByIndex[sourceIndex]
      var name = source.name
      var size = source.size

      var baseNum = modded
      for (var i = sourceIndex + 1; i < numSources; i++) {
        baseNum /= sourcesByIndex[i].size
      }
      baseNum = Math.floor(baseNum)

      var subtractor = 0
      for (var i = 1; i < sourceIndex + 1; i++) {
        var multiplier = result[sourcesByIndex[i - 1].name]
        for (var j = i; j < sourceIndex + 1; j++) {
          multiplier *= sourcesByIndex[j].size
        }

        subtractor += multiplier
      }

      result[name] = baseNum - subtractor
    }

    return result
  }

  return run
}


},{}]},{},[118])(118)
});