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