1. /*
    2.  * JavaScript MD5
    3.  * https://github.com/blueimp/JavaScript-MD5
    4.  *
    5.  * Copyright 2011, Sebastian Tschan
    6.  * https://blueimp.net
    7.  *
    8.  * Licensed under the MIT license:
    9.  * https://opensource.org/licenses/MIT
    10.  *
    11.  * Based on
    12.  * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
    13.  * Digest Algorithm, as defined in RFC 1321.
    14.  * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
    15.  * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
    16.  * Distributed under the BSD License
    17.  * See http://pajhome.org.uk/crypt/md5 for more info.
    18.  */
    20. /* global define */
    22. ;(function ($) {
    23.   'use strict'
    25.   /*
    26.   * Add integers, wrapping at 2^32. This uses 16-bit operations internally
    27.   * to work around bugs in some JS interpreters.
    28.   */
    29.   function safeAdd (x, y) {
    30.     var lsw = (x & 0xffff) + (y & 0xffff)
    31.     var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
    32.     return (msw << 16) | (lsw & 0xffff)
    33.   }
    35.   /*
    36.   * Bitwise rotate a 32-bit number to the left.
    37.   */
    38.   function bitRotateLeft (num, cnt) {
    39.     return (num << cnt) | (num >>> (32 - cnt))
    40.   }
    42.   /*
    43.   * These functions implement the four basic operations the algorithm uses.
    44.   */
    45.   function md5cmn (q, a, b, x, s, t) {
    46.     return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b)
    47.   }
    48.   function md5ff (a, b, c, d, x, s, t) {
    49.     return md5cmn((b & c) | (~b & d), a, b, x, s, t)
    50.   }
    51.   function md5gg (a, b, c, d, x, s, t) {
    52.     return md5cmn((b & d) | (c & ~d), a, b, x, s, t)
    53.   }
    54.   function md5hh (a, b, c, d, x, s, t) {
    55.     return md5cmn(b ^ c ^ d, a, b, x, s, t)
    56.   }
    57.   function md5ii (a, b, c, d, x, s, t) {
    58.     return md5cmn(c ^ (b | ~d), a, b, x, s, t)
    59.   }
    61.   /*
    62.   * Calculate the MD5 of an array of little-endian words, and a bit length.
    63.   */
    64.   function binlMD5 (x, len) {
    65.     /* append padding */
    66.     x[len >> 5] |= 0x80 << (len % 32)
    67.     x[((len + 64) >>> 9 << 4) + 14] = len
    69.     var i
    70.     var olda
    71.     var oldb
    72.     var oldc
    73.     var oldd
    74.     var a = 1732584193
    75.     var b = -271733879
    76.     var c = -1732584194
    77.     var d = 271733878
    79.     for (i = 0; i < x.length; i += 16) {
    80.       olda = a
    81.       oldb = b
    82.       oldc = c
    83.       oldd = d
    85.       a = md5ff(a, b, c, d, x[i], 7, -680876936)
    86.       d = md5ff(d, a, b, c, x[i + 1], 12, -389564586)
    87.       c = md5ff(c, d, a, b, x[i + 2], 17, 606105819)
    88.       b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330)
    89.       a = md5ff(a, b, c, d, x[i + 4], 7, -176418897)
    90.       d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426)
    91.       c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341)
    92.       b = md5ff(b, c, d, a, x[i + 7], 22, -45705983)
    93.       a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416)
    94.       d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417)
    95.       c = md5ff(c, d, a, b, x[i + 10], 17, -42063)
    96.       b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162)
    97.       a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682)
    98.       d = md5ff(d, a, b, c, x[i + 13], 12, -40341101)
    99.       c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290)
    100.       b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329)
    102.       a = md5gg(a, b, c, d, x[i + 1], 5, -165796510)
    103.       d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632)
    104.       c = md5gg(c, d, a, b, x[i + 11], 14, 643717713)
    105.       b = md5gg(b, c, d, a, x[i], 20, -373897302)
    106.       a = md5gg(a, b, c, d, x[i + 5], 5, -701558691)
    107.       d = md5gg(d, a, b, c, x[i + 10], 9, 38016083)
    108.       c = md5gg(c, d, a, b, x[i + 15], 14, -660478335)
    109.       b = md5gg(b, c, d, a, x[i + 4], 20, -405537848)
    110.       a = md5gg(a, b, c, d, x[i + 9], 5, 568446438)
    111.       d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690)
    112.       c = md5gg(c, d, a, b, x[i + 3], 14, -187363961)
    113.       b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501)
    114.       a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467)
    115.       d = md5gg(d, a, b, c, x[i + 2], 9, -51403784)
    116.       c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473)
    117.       b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734)
    119.       a = md5hh(a, b, c, d, x[i + 5], 4, -378558)
    120.       d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463)
    121.       c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562)
    122.       b = md5hh(b, c, d, a, x[i + 14], 23, -35309556)
    123.       a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060)
    124.       d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353)
    125.       c = md5hh(c, d, a, b, x[i + 7], 16, -155497632)
    126.       b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640)
    127.       a = md5hh(a, b, c, d, x[i + 13], 4, 681279174)
    128.       d = md5hh(d, a, b, c, x[i], 11, -358537222)
    129.       c = md5hh(c, d, a, b, x[i + 3], 16, -722521979)
    130.       b = md5hh(b, c, d, a, x[i + 6], 23, 76029189)
    131.       a = md5hh(a, b, c, d, x[i + 9], 4, -640364487)
    132.       d = md5hh(d, a, b, c, x[i + 12], 11, -421815835)
    133.       c = md5hh(c, d, a, b, x[i + 15], 16, 530742520)
    134.       b = md5hh(b, c, d, a, x[i + 2], 23, -995338651)
    136.       a = md5ii(a, b, c, d, x[i], 6, -198630844)
    137.       d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415)
    138.       c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905)
    139.       b = md5ii(b, c, d, a, x[i + 5], 21, -57434055)
    140.       a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571)
    141.       d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606)
    142.       c = md5ii(c, d, a, b, x[i + 10], 15, -1051523)
    143.       b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799)
    144.       a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359)
    145.       d = md5ii(d, a, b, c, x[i + 15], 10, -30611744)
    146.       c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380)
    147.       b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649)
    148.       a = md5ii(a, b, c, d, x[i + 4], 6, -145523070)
    149.       d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379)
    150.       c = md5ii(c, d, a, b, x[i + 2], 15, 718787259)
    151.       b = md5ii(b, c, d, a, x[i + 9], 21, -343485551)
    153.       a = safeAdd(a, olda)
    154.       b = safeAdd(b, oldb)
    155.       c = safeAdd(c, oldc)
    156.       d = safeAdd(d, oldd)
    157.     }
    158.     return [a, b, c, d]
    159.   }
    161.   /*
    162.   * Convert an array of little-endian words to a string
    163.   */
    164.   function binl2rstr (input) {
    165.     var i
    166.     var output = ''
    167.     var length32 = input.length * 32
    168.     for (i = 0; i < length32; i += 8) {
    169.       output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xff)
    170.     }
    171.     return output
    172.   }
    174.   /*
    175.   * Convert a raw string to an array of little-endian words
    176.   * Characters >255 have their high-byte silently ignored.
    177.   */
    178.   function rstr2binl (input) {
    179.     var i
    180.     var output = []
    181.     output[(input.length >> 2) - 1] = undefined
    182.     for (i = 0; i < output.length; i += 1) {
    183.       output[i] = 0
    184.     }
    185.     var length8 = input.length * 8
    186.     for (i = 0; i < length8; i += 8) {
    187.       output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << (i % 32)
    188.     }
    189.     return output
    190.   }
    192.   /*
    193.   * Calculate the MD5 of a raw string
    194.   */
    195.   function rstrMD5 (s) {
    196.     return binl2rstr(binlMD5(rstr2binl(s), s.length * 8))
    197.   }
    199.   /*
    200.   * Calculate the HMAC-MD5, of a key and some data (raw strings)
    201.   */
    202.   function rstrHMACMD5 (key, data) {
    203.     var i
    204.     var bkey = rstr2binl(key)
    205.     var ipad = []
    206.     var opad = []
    207.     var hash
    208.     ipad[15] = opad[15] = undefined
    209.     if (bkey.length > 16) {
    210.       bkey = binlMD5(bkey, key.length * 8)
    211.     }
    212.     for (i = 0; i < 16; i += 1) {
    213.       ipad[i] = bkey[i] ^ 0x36363636
    214.       opad[i] = bkey[i] ^ 0x5c5c5c5c
    215.     }
    216.     hash = binlMD5(ipad.concat(rstr2binl(data)), 512 + data.length * 8)
    217.     return binl2rstr(binlMD5(opad.concat(hash), 512 + 128))
    218.   }
    220.   /*
    221.   * Convert a raw string to a hex string
    222.   */
    223.   function rstr2hex (input) {
    224.     var hexTab = '0123456789abcdef'
    225.     var output = ''
    226.     var x
    227.     var i
    228.     for (i = 0; i < input.length; i += 1) {
    229.       x = input.charCodeAt(i)
    230.       output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f)
    231.     }
    232.     return output
    233.   }
    235.   /*
    236.   * Encode a string as utf-8
    237.   */
    238.   function str2rstrUTF8 (input) {
    239.     return unescape(encodeURIComponent(input))
    240.   }
    242.   /*
    243.   * Take string arguments and return either raw or hex encoded strings
    244.   */
    245.   function rawMD5 (s) {
    246.     return rstrMD5(str2rstrUTF8(s))
    247.   }
    248.   function hexMD5 (s) {
    249.     return rstr2hex(rawMD5(s))
    250.   }
    251.   function rawHMACMD5 (k, d) {
    252.     return rstrHMACMD5(str2rstrUTF8(k), str2rstrUTF8(d))
    253.   }
    254.   function hexHMACMD5 (k, d) {
    255.     return rstr2hex(rawHMACMD5(k, d))
    256.   }
    258.   function md5 (string, key, raw) {
    259.     if (!key) {
    260.       if (!raw) {
    261.         return hexMD5(string)
    262.       }
    263.       return rawMD5(string)
    264.     }
    265.     if (!raw) {
    266.       return hexHMACMD5(key, string)
    267.     }
    268.     return rawHMACMD5(key, string)
    269.   }
    271.   if (typeof define === 'function' && define.amd) {
    272.     define(function () {
    273.       return md5
    274.     })
    275.   } else if (typeof module === 'object' && module.exports) {
    276.     module.exports = md5
    277.   } else {
    278.     $.md5 = md5
    279.   }
    280. })(this)