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255 lines
9 KiB
JavaScript
255 lines
9 KiB
JavaScript
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/*
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CryptoJS v3.1.2
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code.google.com/p/crypto-js
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(c) 2009-2013 by Jeff Mott. All rights reserved.
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code.google.com/p/crypto-js/wiki/License
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*/
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(function (Math) {
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// Shortcuts
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var C = CryptoJS;
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var C_lib = C.lib;
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var WordArray = C_lib.WordArray;
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var Hasher = C_lib.Hasher;
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var C_algo = C.algo;
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// Constants table
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var T = [];
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// Compute constants
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(function () {
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for (var i = 0; i < 64; i++) {
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T[i] = (Math.abs(Math.sin(i + 1)) * 0x100000000) | 0;
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}
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}());
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/**
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* MD5 hash algorithm.
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*/
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var MD5 = C_algo.MD5 = Hasher.extend({
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_doReset: function () {
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this._hash = new WordArray.init([
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0x67452301, 0xefcdab89,
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0x98badcfe, 0x10325476
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]);
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},
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_doProcessBlock: function (M, offset) {
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// Swap endian
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for (var i = 0; i < 16; i++) {
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// Shortcuts
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var offset_i = offset + i;
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var M_offset_i = M[offset_i];
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M[offset_i] = (
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(((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
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(((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
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);
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}
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// Shortcuts
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var H = this._hash.words;
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var M_offset_0 = M[offset + 0];
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var M_offset_1 = M[offset + 1];
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var M_offset_2 = M[offset + 2];
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var M_offset_3 = M[offset + 3];
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var M_offset_4 = M[offset + 4];
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var M_offset_5 = M[offset + 5];
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var M_offset_6 = M[offset + 6];
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var M_offset_7 = M[offset + 7];
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var M_offset_8 = M[offset + 8];
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var M_offset_9 = M[offset + 9];
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var M_offset_10 = M[offset + 10];
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var M_offset_11 = M[offset + 11];
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var M_offset_12 = M[offset + 12];
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var M_offset_13 = M[offset + 13];
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var M_offset_14 = M[offset + 14];
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var M_offset_15 = M[offset + 15];
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// Working varialbes
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var a = H[0];
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var b = H[1];
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var c = H[2];
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var d = H[3];
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// Computation
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a = FF(a, b, c, d, M_offset_0, 7, T[0]);
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d = FF(d, a, b, c, M_offset_1, 12, T[1]);
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c = FF(c, d, a, b, M_offset_2, 17, T[2]);
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b = FF(b, c, d, a, M_offset_3, 22, T[3]);
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a = FF(a, b, c, d, M_offset_4, 7, T[4]);
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d = FF(d, a, b, c, M_offset_5, 12, T[5]);
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c = FF(c, d, a, b, M_offset_6, 17, T[6]);
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b = FF(b, c, d, a, M_offset_7, 22, T[7]);
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a = FF(a, b, c, d, M_offset_8, 7, T[8]);
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d = FF(d, a, b, c, M_offset_9, 12, T[9]);
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c = FF(c, d, a, b, M_offset_10, 17, T[10]);
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b = FF(b, c, d, a, M_offset_11, 22, T[11]);
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a = FF(a, b, c, d, M_offset_12, 7, T[12]);
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d = FF(d, a, b, c, M_offset_13, 12, T[13]);
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c = FF(c, d, a, b, M_offset_14, 17, T[14]);
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b = FF(b, c, d, a, M_offset_15, 22, T[15]);
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a = GG(a, b, c, d, M_offset_1, 5, T[16]);
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d = GG(d, a, b, c, M_offset_6, 9, T[17]);
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c = GG(c, d, a, b, M_offset_11, 14, T[18]);
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b = GG(b, c, d, a, M_offset_0, 20, T[19]);
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a = GG(a, b, c, d, M_offset_5, 5, T[20]);
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d = GG(d, a, b, c, M_offset_10, 9, T[21]);
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c = GG(c, d, a, b, M_offset_15, 14, T[22]);
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b = GG(b, c, d, a, M_offset_4, 20, T[23]);
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a = GG(a, b, c, d, M_offset_9, 5, T[24]);
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d = GG(d, a, b, c, M_offset_14, 9, T[25]);
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c = GG(c, d, a, b, M_offset_3, 14, T[26]);
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b = GG(b, c, d, a, M_offset_8, 20, T[27]);
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a = GG(a, b, c, d, M_offset_13, 5, T[28]);
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d = GG(d, a, b, c, M_offset_2, 9, T[29]);
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c = GG(c, d, a, b, M_offset_7, 14, T[30]);
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b = GG(b, c, d, a, M_offset_12, 20, T[31]);
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a = HH(a, b, c, d, M_offset_5, 4, T[32]);
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d = HH(d, a, b, c, M_offset_8, 11, T[33]);
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c = HH(c, d, a, b, M_offset_11, 16, T[34]);
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b = HH(b, c, d, a, M_offset_14, 23, T[35]);
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a = HH(a, b, c, d, M_offset_1, 4, T[36]);
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d = HH(d, a, b, c, M_offset_4, 11, T[37]);
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c = HH(c, d, a, b, M_offset_7, 16, T[38]);
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b = HH(b, c, d, a, M_offset_10, 23, T[39]);
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a = HH(a, b, c, d, M_offset_13, 4, T[40]);
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d = HH(d, a, b, c, M_offset_0, 11, T[41]);
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c = HH(c, d, a, b, M_offset_3, 16, T[42]);
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b = HH(b, c, d, a, M_offset_6, 23, T[43]);
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a = HH(a, b, c, d, M_offset_9, 4, T[44]);
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d = HH(d, a, b, c, M_offset_12, 11, T[45]);
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c = HH(c, d, a, b, M_offset_15, 16, T[46]);
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b = HH(b, c, d, a, M_offset_2, 23, T[47]);
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a = II(a, b, c, d, M_offset_0, 6, T[48]);
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d = II(d, a, b, c, M_offset_7, 10, T[49]);
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c = II(c, d, a, b, M_offset_14, 15, T[50]);
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b = II(b, c, d, a, M_offset_5, 21, T[51]);
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a = II(a, b, c, d, M_offset_12, 6, T[52]);
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d = II(d, a, b, c, M_offset_3, 10, T[53]);
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c = II(c, d, a, b, M_offset_10, 15, T[54]);
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b = II(b, c, d, a, M_offset_1, 21, T[55]);
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a = II(a, b, c, d, M_offset_8, 6, T[56]);
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d = II(d, a, b, c, M_offset_15, 10, T[57]);
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c = II(c, d, a, b, M_offset_6, 15, T[58]);
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b = II(b, c, d, a, M_offset_13, 21, T[59]);
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a = II(a, b, c, d, M_offset_4, 6, T[60]);
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d = II(d, a, b, c, M_offset_11, 10, T[61]);
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c = II(c, d, a, b, M_offset_2, 15, T[62]);
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b = II(b, c, d, a, M_offset_9, 21, T[63]);
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// Intermediate hash value
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H[0] = (H[0] + a) | 0;
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H[1] = (H[1] + b) | 0;
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H[2] = (H[2] + c) | 0;
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H[3] = (H[3] + d) | 0;
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},
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_doFinalize: function () {
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// Shortcuts
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var data = this._data;
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var dataWords = data.words;
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var nBitsTotal = this._nDataBytes * 8;
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var nBitsLeft = data.sigBytes * 8;
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// Add padding
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dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
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var nBitsTotalH = Math.floor(nBitsTotal / 0x100000000);
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var nBitsTotalL = nBitsTotal;
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dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = (
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(((nBitsTotalH << 8) | (nBitsTotalH >>> 24)) & 0x00ff00ff) |
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(((nBitsTotalH << 24) | (nBitsTotalH >>> 8)) & 0xff00ff00)
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);
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dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
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(((nBitsTotalL << 8) | (nBitsTotalL >>> 24)) & 0x00ff00ff) |
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(((nBitsTotalL << 24) | (nBitsTotalL >>> 8)) & 0xff00ff00)
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);
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data.sigBytes = (dataWords.length + 1) * 4;
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// Hash final blocks
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this._process();
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// Shortcuts
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var hash = this._hash;
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var H = hash.words;
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// Swap endian
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for (var i = 0; i < 4; i++) {
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// Shortcut
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var H_i = H[i];
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H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
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(((H_i << 24) | (H_i >>> 8)) & 0xff00ff00);
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}
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// Return final computed hash
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return hash;
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},
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clone: function () {
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var clone = Hasher.clone.call(this);
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clone._hash = this._hash.clone();
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return clone;
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}
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});
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function FF(a, b, c, d, x, s, t) {
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var n = a + ((b & c) | (~b & d)) + x + t;
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return ((n << s) | (n >>> (32 - s))) + b;
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}
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function GG(a, b, c, d, x, s, t) {
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var n = a + ((b & d) | (c & ~d)) + x + t;
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return ((n << s) | (n >>> (32 - s))) + b;
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}
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function HH(a, b, c, d, x, s, t) {
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var n = a + (b ^ c ^ d) + x + t;
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return ((n << s) | (n >>> (32 - s))) + b;
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}
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function II(a, b, c, d, x, s, t) {
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var n = a + (c ^ (b | ~d)) + x + t;
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return ((n << s) | (n >>> (32 - s))) + b;
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}
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/**
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* Shortcut function to the hasher's object interface.
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*
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* @param {WordArray|string} message The message to hash.
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*
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* @return {WordArray} The hash.
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*
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* @static
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*
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* @example
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*
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* var hash = CryptoJS.MD5('message');
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* var hash = CryptoJS.MD5(wordArray);
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*/
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C.MD5 = Hasher._createHelper(MD5);
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/**
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* Shortcut function to the HMAC's object interface.
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*
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* @param {WordArray|string} message The message to hash.
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* @param {WordArray|string} key The secret key.
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*
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* @return {WordArray} The HMAC.
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*
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* @static
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*
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* @example
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*
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* var hmac = CryptoJS.HmacMD5(message, key);
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*/
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C.HmacMD5 = Hasher._createHmacHelper(MD5);
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}(Math));
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