/*!
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* Crypto-JS v1.1.0
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* http://code.google.com/p/crypto-js/
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* Copyright (c) 2009, Jeff Mott. All rights reserved.
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* http://code.google.com/p/crypto-js/wiki/License
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*/
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(function(){
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// Shortcut
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var util = Crypto.util;
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// Constants
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var K = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
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0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
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0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
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0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
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0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
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0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
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0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
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0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
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0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
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0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
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0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
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0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
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0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
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0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
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0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
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0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 ];
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// Public API
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var SHA256 = Crypto.SHA256 = function (message, options) {
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var digestbytes = util.wordsToBytes(SHA256._sha256(message));
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return options && options.asBytes ? digestbytes :
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options && options.asString ? util.bytesToString(digestbytes) :
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util.bytesToHex(digestbytes);
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};
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// The core
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SHA256._sha256 = function (message) {
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var m = util.stringToWords(message),
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l = message.length * 8,
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H = [ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
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0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 ],
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w = [],
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a, b, c, d, e, f, g, h, i, j,
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t1, t2;
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// Padding
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m[l >> 5] |= 0x80 << (24 - l % 32);
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m[((l + 64 >> 9) << 4) + 15] = l;
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for (var i = 0; i < m.length; i += 16) {
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a = H[0];
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b = H[1];
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c = H[2];
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d = H[3];
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e = H[4];
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f = H[5];
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g = H[6];
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h = H[7];
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for (var j = 0; j < 64; j++) {
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if (j < 16) w[j] = m[j + i];
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else {
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var gamma0x = w[j - 15],
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gamma1x = w[j - 2],
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gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^
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((gamma0x << 14) | (gamma0x >>> 18)) ^
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(gamma0x >>> 3),
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gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^
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((gamma1x << 13) | (gamma1x >>> 19)) ^
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(gamma1x >>> 10);
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w[j] = gamma0 + (w[j - 7] >>> 0) +
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gamma1 + (w[j - 16] >>> 0);
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}
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var ch = e & f ^ ~e & g,
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maj = a & b ^ a & c ^ b & c,
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sigma0 = ((a << 30) | (a >>> 2)) ^
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((a << 19) | (a >>> 13)) ^
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((a << 10) | (a >>> 22)),
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sigma1 = ((e << 26) | (e >>> 6)) ^
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((e << 21) | (e >>> 11)) ^
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((e << 7) | (e >>> 25));
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t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0);
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t2 = sigma0 + maj;
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h = g;
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g = f;
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f = e;
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e = d + t1;
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d = c;
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c = b;
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b = a;
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a = t1 + t2;
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}
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H[0] += a;
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H[1] += b;
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H[2] += c;
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H[3] += d;
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H[4] += e;
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H[5] += f;
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H[6] += g;
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H[7] += h;
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}
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return H;
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};
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// Package private blocksize
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SHA256._blocksize = 16;
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})();
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