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235 lines
9.0 KiB
JavaScript
235 lines
9.0 KiB
JavaScript
/*
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* js-sha256 v0.2.0
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* https://github.com/emn178/js-sha256
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*
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* Copyright 2014-2015, emn178@gmail.com
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/MIT
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*/
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;(function(root, undefined) {
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'use strict';
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var NODE_JS = typeof(module) != 'undefined';
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if(NODE_JS) {
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root = global;
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}
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var HEX_CHARS = '0123456789abcdef'.split('');
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var EXTRA = [-2147483648, 8388608, 32768, 128];
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var SHIFT = [24, 16, 8, 0];
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var K =[0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];
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var blocks = [];
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var sha256 = function(message) {
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return sha2(message, true);
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};
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var sha224 = function(message) {
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return sha2(message, false);
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};
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var sha2 = function(message, is256) {
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var h0, h1, h2, h3, h4, h5, h6, h7, code, end = false,
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i, j, index = 0, start = 0, bytes = 0, length = message.length,
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s0, s1, tmp1, tmp2, tmp3, maj, t1, t2, ch, ab, da, cd, bc;
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if(is256) {
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h0 = 0x6a09e667;
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h1 = 0xbb67ae85;
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h2 = 0x3c6ef372;
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h3 = 0xa54ff53a;
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h4 = 0x510e527f;
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h5 = 0x9b05688c;
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h6 = 0x1f83d9ab;
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h7 = 0x5be0cd19;
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} else { // 224
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h0 = 0xc1059ed8;
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h1 = 0x367cd507;
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h2 = 0x3070dd17;
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h3 = 0xf70e5939;
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h4 = 0xffc00b31;
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h5 = 0x68581511;
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h6 = 0x64f98fa7;
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h7 = 0xbefa4fa4;
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}
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blocks[64] = 0;
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do {
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blocks[0] = blocks[64];
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blocks[16] = blocks[1] = blocks[2] = blocks[3] =
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blocks[4] = blocks[5] = blocks[6] = blocks[7] =
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blocks[8] = blocks[9] = blocks[10] = blocks[11] =
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blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
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for (i = start;index < length && i < 64; ++index) {
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code = message.charCodeAt(index);
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if (code < 0x80) {
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blocks[i >> 2] |= code << SHIFT[i++ & 3];
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} else if (code < 0x800) {
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blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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} else if (code < 0xd800 || code >= 0xe000) {
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blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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} else {
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code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
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blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
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blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
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}
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}
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blocks[64] = blocks[16];
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bytes += i - start;
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start = i - 64;
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if(index == length) {
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blocks[i >> 2] |= EXTRA[i & 3];
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++index;
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}
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if(index > length && i < 56) {
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blocks[15] = bytes << 3;
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end = true;
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}
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var a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7;
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for(j = 16;j < 64;++j) {
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// rightrotate
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tmp1 = tmp2 = blocks[j - 15];
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tmp1 = (tmp1 >>> 7) | (tmp1 << 25);
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tmp2 = (tmp2 >>> 18) | (tmp2 << 14);
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s0 = tmp1 ^ tmp2 ^ (blocks[j - 15] >>> 3);
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tmp1 = tmp2 = blocks[j - 2];
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tmp1 = (tmp1 >>> 17) | (tmp1 << 15);
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tmp2 = (tmp2 >>> 19) | (tmp2 << 13);
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s1 = tmp1 ^ tmp2 ^ (blocks[j - 2] >>> 10);
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blocks[j] = blocks[j - 16] + s0 + blocks[j - 7] + s1 << 0;
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}
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bc = b & c;
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for(j = 0;j < 64;j += 4) {
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tmp1 = (a >>> 2) | (a << 30);
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tmp2 = (a >>> 13) | (a << 19);
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tmp3 = (a >>> 22) | (a << 10);
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s0 = tmp1 ^ tmp2 ^ tmp3;
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tmp1 = (e >>> 6) | (e << 26);
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tmp2 = (e >>> 11) | (e << 21);
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tmp3 = (e >>> 25) | (e << 7);
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s1 = tmp1 ^ tmp2 ^ tmp3;
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ab = a & b;
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maj = ab ^ (a & c) ^ bc;
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ch = (e & f) ^ (~e & g);
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t1 = h + s1 + ch + K[j] + blocks[j] << 0;
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t2 = s0 + maj << 0;
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h = d + t1 << 0;
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d = t1 + t2 << 0;
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tmp1 = (d >>> 2) | (d << 30);
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tmp2 = (d >>> 13) | (d << 19);
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tmp3 = (d >>> 22) | (d << 10);
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s0 = tmp1 ^ tmp2 ^ tmp3;
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tmp1 = (h >>> 6) | (h << 26);
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tmp2 = (h >>> 11) | (h << 21);
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tmp3 = (h >>> 25) | (h << 7);
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s1 = tmp1 ^ tmp2 ^ tmp3;
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da = d & a;
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maj = da ^ (d & b) ^ ab;
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ch = (h & e) ^ (~h & f);
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t1 = g + s1 + ch + K[j + 1] + blocks[j + 1] << 0;
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t2 = s0 + maj << 0;
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g = c + t1 << 0;
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c = t1 + t2 << 0;
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tmp1 = (c >>> 2) | (c << 30);
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tmp2 = (c >>> 13) | (c << 19);
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tmp3 = (c >>> 22) | (c << 10);
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s0 = tmp1 ^ tmp2 ^ tmp3;
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tmp1 = (g >>> 6) | (g << 26);
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tmp2 = (g >>> 11) | (g << 21);
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tmp3 = (g >>> 25) | (g << 7);
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s1 = tmp1 ^ tmp2 ^ tmp3;
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cd = c & d;
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maj = cd ^ (c & a) ^ da;
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ch = (g & h) ^ (~g & e);
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t1 = f + s1 + ch + K[j + 2] + blocks[j + 2] << 0;
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t2 = s0 + maj << 0;
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f = b + t1 << 0;
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b = t1 + t2 << 0;
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tmp1 = (b >>> 2) | (b << 30);
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tmp2 = (b >>> 13) | (b << 19);
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tmp3 = (b >>> 22) | (b << 10);
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s0 = tmp1 ^ tmp2 ^ tmp3;
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tmp1 = (f >>> 6) | (f << 26);
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tmp2 = (f >>> 11) | (f << 21);
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tmp3 = (f >>> 25) | (f << 7);
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s1 = tmp1 ^ tmp2 ^ tmp3;
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bc = b & c;
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maj = bc ^ (b & d) ^ cd;
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ch = (f & g) ^ (~f & h);
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t1 = e + s1 + ch + K[j + 3] + blocks[j + 3] << 0;
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t2 = s0 + maj << 0;
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e = a + t1 << 0;
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a = t1 + t2 << 0;
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}
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h0 = h0 + a << 0;
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h1 = h1 + b << 0;
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h2 = h2 + c << 0;
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h3 = h3 + d << 0;
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h4 = h4 + e << 0;
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h5 = h5 + f << 0;
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h6 = h6 + g << 0;
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h7 = h7 + h << 0;
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} while(!end);
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var hex = HEX_CHARS[(h0 >> 28) & 0x0F] + HEX_CHARS[(h0 >> 24) & 0x0F] +
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HEX_CHARS[(h0 >> 20) & 0x0F] + HEX_CHARS[(h0 >> 16) & 0x0F] +
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HEX_CHARS[(h0 >> 12) & 0x0F] + HEX_CHARS[(h0 >> 8) & 0x0F] +
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HEX_CHARS[(h0 >> 4) & 0x0F] + HEX_CHARS[h0 & 0x0F] +
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HEX_CHARS[(h1 >> 28) & 0x0F] + HEX_CHARS[(h1 >> 24) & 0x0F] +
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HEX_CHARS[(h1 >> 20) & 0x0F] + HEX_CHARS[(h1 >> 16) & 0x0F] +
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HEX_CHARS[(h1 >> 12) & 0x0F] + HEX_CHARS[(h1 >> 8) & 0x0F] +
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HEX_CHARS[(h1 >> 4) & 0x0F] + HEX_CHARS[h1 & 0x0F] +
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HEX_CHARS[(h2 >> 28) & 0x0F] + HEX_CHARS[(h2 >> 24) & 0x0F] +
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HEX_CHARS[(h2 >> 20) & 0x0F] + HEX_CHARS[(h2 >> 16) & 0x0F] +
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HEX_CHARS[(h2 >> 12) & 0x0F] + HEX_CHARS[(h2 >> 8) & 0x0F] +
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HEX_CHARS[(h2 >> 4) & 0x0F] + HEX_CHARS[h2 & 0x0F] +
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HEX_CHARS[(h3 >> 28) & 0x0F] + HEX_CHARS[(h3 >> 24) & 0x0F] +
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HEX_CHARS[(h3 >> 20) & 0x0F] + HEX_CHARS[(h3 >> 16) & 0x0F] +
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HEX_CHARS[(h3 >> 12) & 0x0F] + HEX_CHARS[(h3 >> 8) & 0x0F] +
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HEX_CHARS[(h3 >> 4) & 0x0F] + HEX_CHARS[h3 & 0x0F] +
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HEX_CHARS[(h4 >> 28) & 0x0F] + HEX_CHARS[(h4 >> 24) & 0x0F] +
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HEX_CHARS[(h4 >> 20) & 0x0F] + HEX_CHARS[(h4 >> 16) & 0x0F] +
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HEX_CHARS[(h4 >> 12) & 0x0F] + HEX_CHARS[(h4 >> 8) & 0x0F] +
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HEX_CHARS[(h4 >> 4) & 0x0F] + HEX_CHARS[h4 & 0x0F] +
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HEX_CHARS[(h5 >> 28) & 0x0F] + HEX_CHARS[(h5 >> 24) & 0x0F] +
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HEX_CHARS[(h5 >> 20) & 0x0F] + HEX_CHARS[(h5 >> 16) & 0x0F] +
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HEX_CHARS[(h5 >> 12) & 0x0F] + HEX_CHARS[(h5 >> 8) & 0x0F] +
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HEX_CHARS[(h5 >> 4) & 0x0F] + HEX_CHARS[h5 & 0x0F] +
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HEX_CHARS[(h6 >> 28) & 0x0F] + HEX_CHARS[(h6 >> 24) & 0x0F] +
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HEX_CHARS[(h6 >> 20) & 0x0F] + HEX_CHARS[(h6 >> 16) & 0x0F] +
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HEX_CHARS[(h6 >> 12) & 0x0F] + HEX_CHARS[(h6 >> 8) & 0x0F] +
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HEX_CHARS[(h6 >> 4) & 0x0F] + HEX_CHARS[h6 & 0x0F];
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if(is256) {
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hex += HEX_CHARS[(h7 >> 28) & 0x0F] + HEX_CHARS[(h7 >> 24) & 0x0F] +
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HEX_CHARS[(h7 >> 20) & 0x0F] + HEX_CHARS[(h7 >> 16) & 0x0F] +
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HEX_CHARS[(h7 >> 12) & 0x0F] + HEX_CHARS[(h7 >> 8) & 0x0F] +
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HEX_CHARS[(h7 >> 4) & 0x0F] + HEX_CHARS[h7 & 0x0F];
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}
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return hex;
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};
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if(!root.JS_SHA256_TEST && NODE_JS) {
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sha256.sha256 = sha256;
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sha256.sha224 = sha224;
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module.exports = sha256;
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} else if(root) {
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root.sha256 = sha256;
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root.sha224 = sha224;
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}
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}(this));
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