/** * Created by xianjun on 2014/12/15. */ importScripts('crypto-min.js'); // Auxiliary functions function FF(a, b, c, d, x, s, t) { var n = a + (b & c | ~b & d) + (x >>> 0) + t; return ((n << s) | (n >>> (32 - s))) + b; } function GG(a, b, c, d, x, s, t) { var n = a + (b & d | c & ~d) + (x >>> 0) + t; return ((n << s) | (n >>> (32 - s))) + b; } function HH(a, b, c, d, x, s, t) { var n = a + (b ^ c ^ d) + (x >>> 0) + t; return ((n << s) | (n >>> (32 - s))) + b; } function II(a, b, c, d, x, s, t) { var n = a + (c ^ (b | ~d)) + (x >>> 0) + t; return ((n << s) | (n >>> (32 - s))) + b; } function md5(m, hash) { var a = hash[0], b = hash[1], c = hash[2], d = hash[3]; 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 [a, b, c, d]; } var K = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 ]; function sha256(m, H) { var w = [], a, b, c, d, e, f, g, h, i, j, t1, t2; for (var i = 0; i < m.length; i += 16) { a = H[0]; b = H[1]; c = H[2]; d = H[3]; e = H[4]; f = H[5]; g = H[6]; h = H[7]; for (var j = 0; j < 64; j++) { if (j < 16) w[j] = m[j + i]; else { var gamma0x = w[j - 15], gamma1x = w[j - 2], gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^ ((gamma0x << 14) | (gamma0x >>> 18)) ^ (gamma0x >>> 3), gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^ ((gamma1x << 13) | (gamma1x >>> 19)) ^ (gamma1x >>> 10); w[j] = gamma0 + (w[j - 7] >>> 0) + gamma1 + (w[j - 16] >>> 0); } var ch = e & f ^ ~e & g, maj = a & b ^ a & c ^ b & c, sigma0 = ((a << 30) | (a >>> 2)) ^ ((a << 19) | (a >>> 13)) ^ ((a << 10) | (a >>> 22)), sigma1 = ((e << 26) | (e >>> 6)) ^ ((e << 21) | (e >>> 11)) ^ ((e << 7) | (e >>> 25)); t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0); t2 = sigma0 + maj; h = g; g = f; f = e; e = (d + t1) >>> 0; d = c; c = b; b = a; a = (t1 + t2) >>> 0; } // Intermediate hash value H[0] = (H[0] + a) | 0; H[1] = (H[1] + b) | 0; H[2] = (H[2] + c) | 0; H[3] = (H[3] + d) | 0; H[4] = (H[4] + e) | 0; H[5] = (H[5] + f) | 0; H[6] = (H[6] + g) | 0; H[7] = (H[7] + h) | 0; } return H; }; self.hashMD5 = [1732584193, -271733879, -1732584194, 271733878]; self.hashSHA256 = [ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 ]; self.addEventListener('message', function (event) { var uint8_array, message, block, output, nBitsTotal, nBitsLeft, nBitsTotalH, nBitsTotalL; uint8_array = new Uint8Array(event.data.message); var messageMD5 = Crypto.util.endian(Crypto.util.bytesToWords(uint8_array)); var messageSHA256 = Crypto.util.bytesToWords(uint8_array); block = event.data.block; event = null; uint8_array = null; output = { 'block' : block }; if (block.end === block.file_size) { //MD5 nBitsTotal = block.file_size * 8; nBitsLeft = (block.end - block.start) * 8; nBitsTotalH = Math.floor(nBitsTotal / 0x100000000); nBitsTotalL = nBitsTotal & 0xFFFFFFFF; messageMD5[nBitsLeft >>> 5] |= 0x80 << (nBitsLeft % 32); messageMD5[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotalH; messageMD5[(((nBitsLeft + 64) >>> 9) << 4) + 14] = nBitsTotalL; //SHA256 nBitsTotal = block.file_size * 8; nBitsLeft = (block.end - block.start) * 8; nBitsTotalH = Math.floor(nBitsTotal / 0x100000000); nBitsTotalL = nBitsTotal & 0xFFFFFFFF; messageSHA256[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsTotal % 32); messageSHA256[((nBitsLeft + 64 >>> 9) << 4) + 14] = nBitsTotalH; messageSHA256[((nBitsLeft + 64 >>> 9) << 4) + 15] = nBitsTotalL; self.hashMD5 = md5(messageMD5, self.hashMD5); self.hashSHA256 = sha256(messageSHA256, self.hashSHA256); output.result = Crypto.util.bytesToHex(Crypto.util.wordsToBytes(Crypto.util.endian(self.hashMD5))) +Crypto.util.bytesToHex(Crypto.util.wordsToBytes(self.hashSHA256)); } else { self.hashMD5 = md5(messageMD5, self.hashMD5); self.hashSHA256 = sha256(messageSHA256, self.hashSHA256); } messageMD5 = null; messageSHA256 = null; self.postMessage(output); }, false);