Blame view

node_modules/md5/md5.js 5.86 KB
f7563de62   Palak Handa   first commit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
  (function(){
    var crypt = require('crypt'),
        utf8 = require('charenc').utf8,
        isBuffer = require('is-buffer'),
        bin = require('charenc').bin,
  
    // The core
    md5 = function (message, options) {
      // Convert to byte array
      if (message.constructor == String)
        if (options && options.encoding === 'binary')
          message = bin.stringToBytes(message);
        else
          message = utf8.stringToBytes(message);
      else if (isBuffer(message))
        message = Array.prototype.slice.call(message, 0);
      else if (!Array.isArray(message))
        message = message.toString();
      // else, assume byte array already
  
      var m = crypt.bytesToWords(message),
          l = message.length * 8,
          a =  1732584193,
          b = -271733879,
          c = -1732584194,
          d =  271733878;
  
      // Swap endian
      for (var i = 0; i < m.length; i++) {
        m[i] = ((m[i] <<  8) | (m[i] >>> 24)) & 0x00FF00FF |
               ((m[i] << 24) | (m[i] >>>  8)) & 0xFF00FF00;
      }
  
      // Padding
      m[l >>> 5] |= 0x80 << (l % 32);
      m[(((l + 64) >>> 9) << 4) + 14] = l;
  
      // Method shortcuts
      var FF = md5._ff,
          GG = md5._gg,
          HH = md5._hh,
          II = md5._ii;
  
      for (var i = 0; i < m.length; i += 16) {
  
        var aa = a,
            bb = b,
            cc = c,
            dd = d;
  
        a = FF(a, b, c, d, m[i+ 0],  7, -680876936);
        d = FF(d, a, b, c, m[i+ 1], 12, -389564586);
        c = FF(c, d, a, b, m[i+ 2], 17,  606105819);
        b = FF(b, c, d, a, m[i+ 3], 22, -1044525330);
        a = FF(a, b, c, d, m[i+ 4],  7, -176418897);
        d = FF(d, a, b, c, m[i+ 5], 12,  1200080426);
        c = FF(c, d, a, b, m[i+ 6], 17, -1473231341);
        b = FF(b, c, d, a, m[i+ 7], 22, -45705983);
        a = FF(a, b, c, d, m[i+ 8],  7,  1770035416);
        d = FF(d, a, b, c, m[i+ 9], 12, -1958414417);
        c = FF(c, d, a, b, m[i+10], 17, -42063);
        b = FF(b, c, d, a, m[i+11], 22, -1990404162);
        a = FF(a, b, c, d, m[i+12],  7,  1804603682);
        d = FF(d, a, b, c, m[i+13], 12, -40341101);
        c = FF(c, d, a, b, m[i+14], 17, -1502002290);
        b = FF(b, c, d, a, m[i+15], 22,  1236535329);
  
        a = GG(a, b, c, d, m[i+ 1],  5, -165796510);
        d = GG(d, a, b, c, m[i+ 6],  9, -1069501632);
        c = GG(c, d, a, b, m[i+11], 14,  643717713);
        b = GG(b, c, d, a, m[i+ 0], 20, -373897302);
        a = GG(a, b, c, d, m[i+ 5],  5, -701558691);
        d = GG(d, a, b, c, m[i+10],  9,  38016083);
        c = GG(c, d, a, b, m[i+15], 14, -660478335);
        b = GG(b, c, d, a, m[i+ 4], 20, -405537848);
        a = GG(a, b, c, d, m[i+ 9],  5,  568446438);
        d = GG(d, a, b, c, m[i+14],  9, -1019803690);
        c = GG(c, d, a, b, m[i+ 3], 14, -187363961);
        b = GG(b, c, d, a, m[i+ 8], 20,  1163531501);
        a = GG(a, b, c, d, m[i+13],  5, -1444681467);
        d = GG(d, a, b, c, m[i+ 2],  9, -51403784);
        c = GG(c, d, a, b, m[i+ 7], 14,  1735328473);
        b = GG(b, c, d, a, m[i+12], 20, -1926607734);
  
        a = HH(a, b, c, d, m[i+ 5],  4, -378558);
        d = HH(d, a, b, c, m[i+ 8], 11, -2022574463);
        c = HH(c, d, a, b, m[i+11], 16,  1839030562);
        b = HH(b, c, d, a, m[i+14], 23, -35309556);
        a = HH(a, b, c, d, m[i+ 1],  4, -1530992060);
        d = HH(d, a, b, c, m[i+ 4], 11,  1272893353);
        c = HH(c, d, a, b, m[i+ 7], 16, -155497632);
        b = HH(b, c, d, a, m[i+10], 23, -1094730640);
        a = HH(a, b, c, d, m[i+13],  4,  681279174);
        d = HH(d, a, b, c, m[i+ 0], 11, -358537222);
        c = HH(c, d, a, b, m[i+ 3], 16, -722521979);
        b = HH(b, c, d, a, m[i+ 6], 23,  76029189);
        a = HH(a, b, c, d, m[i+ 9],  4, -640364487);
        d = HH(d, a, b, c, m[i+12], 11, -421815835);
        c = HH(c, d, a, b, m[i+15], 16,  530742520);
        b = HH(b, c, d, a, m[i+ 2], 23, -995338651);
  
        a = II(a, b, c, d, m[i+ 0],  6, -198630844);
        d = II(d, a, b, c, m[i+ 7], 10,  1126891415);
        c = II(c, d, a, b, m[i+14], 15, -1416354905);
        b = II(b, c, d, a, m[i+ 5], 21, -57434055);
        a = II(a, b, c, d, m[i+12],  6,  1700485571);
        d = II(d, a, b, c, m[i+ 3], 10, -1894986606);
        c = II(c, d, a, b, m[i+10], 15, -1051523);
        b = II(b, c, d, a, m[i+ 1], 21, -2054922799);
        a = II(a, b, c, d, m[i+ 8],  6,  1873313359);
        d = II(d, a, b, c, m[i+15], 10, -30611744);
        c = II(c, d, a, b, m[i+ 6], 15, -1560198380);
        b = II(b, c, d, a, m[i+13], 21,  1309151649);
        a = II(a, b, c, d, m[i+ 4],  6, -145523070);
        d = II(d, a, b, c, m[i+11], 10, -1120210379);
        c = II(c, d, a, b, m[i+ 2], 15,  718787259);
        b = II(b, c, d, a, m[i+ 9], 21, -343485551);
  
        a = (a + aa) >>> 0;
        b = (b + bb) >>> 0;
        c = (c + cc) >>> 0;
        d = (d + dd) >>> 0;
      }
  
      return crypt.endian([a, b, c, d]);
    };
  
    // Auxiliary functions
    md5._ff  = function (a, b, c, d, x, s, t) {
      var n = a + (b & c | ~b & d) + (x >>> 0) + t;
      return ((n << s) | (n >>> (32 - s))) + b;
    };
    md5._gg  = function (a, b, c, d, x, s, t) {
      var n = a + (b & d | c & ~d) + (x >>> 0) + t;
      return ((n << s) | (n >>> (32 - s))) + b;
    };
    md5._hh  = function (a, b, c, d, x, s, t) {
      var n = a + (b ^ c ^ d) + (x >>> 0) + t;
      return ((n << s) | (n >>> (32 - s))) + b;
    };
    md5._ii  = function (a, b, c, d, x, s, t) {
      var n = a + (c ^ (b | ~d)) + (x >>> 0) + t;
      return ((n << s) | (n >>> (32 - s))) + b;
    };
  
    // Package private blocksize
    md5._blocksize = 16;
    md5._digestsize = 16;
  
    module.exports = function (message, options) {
      if (message === undefined || message === null)
        throw new Error('Illegal argument ' + message);
  
      var digestbytes = crypt.wordsToBytes(md5(message, options));
      return options && options.asBytes ? digestbytes :
          options && options.asString ? bin.bytesToString(digestbytes) :
          crypt.bytesToHex(digestbytes);
    };
  
  })();