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140 lines
5.5 KiB
140 lines
5.5 KiB
var isStr = require('./isStr'); |
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var strToBytes = require('./strToBytes'); |
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var hex = require('./hex'); |
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var bytesToWords = require('./bytesToWords'); |
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var wordsToBytes = require('./wordsToBytes'); |
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var isNode = require('./isNode'); |
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var isArr = require('./isArr'); |
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exports = function(msg) { |
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if (isStr(msg)) msg = strToBytes(msg); |
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var m = bytesToWords(msg); |
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var l = msg.length * 8; |
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var a = 1732584193; |
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var b = -271733879; |
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var c = -1732584194; |
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var d = 271733878; |
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for (var i = 0; i < m.length; i++) { |
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m[i] = |
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(((m[i] << 8) | (m[i] >>> 24)) & 0x00ff00ff) | |
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(((m[i] << 24) | (m[i] >>> 8)) & 0xff00ff00); |
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} |
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|
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m[l >>> 5] |= 0x80 << l % 32; |
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m[(((l + 64) >>> 9) << 4) + 14] = l; |
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for (var _i = 0; _i < m.length; _i += 16) { |
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var aa = a; |
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var bb = b; |
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var cc = c; |
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var dd = d; |
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a = FF(a, b, c, d, m[_i + 0], 7, -680876936); |
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d = FF(d, a, b, c, m[_i + 1], 12, -389564586); |
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c = FF(c, d, a, b, m[_i + 2], 17, 606105819); |
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b = FF(b, c, d, a, m[_i + 3], 22, -1044525330); |
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a = FF(a, b, c, d, m[_i + 4], 7, -176418897); |
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d = FF(d, a, b, c, m[_i + 5], 12, 1200080426); |
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c = FF(c, d, a, b, m[_i + 6], 17, -1473231341); |
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b = FF(b, c, d, a, m[_i + 7], 22, -45705983); |
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a = FF(a, b, c, d, m[_i + 8], 7, 1770035416); |
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d = FF(d, a, b, c, m[_i + 9], 12, -1958414417); |
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c = FF(c, d, a, b, m[_i + 10], 17, -42063); |
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b = FF(b, c, d, a, m[_i + 11], 22, -1990404162); |
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a = FF(a, b, c, d, m[_i + 12], 7, 1804603682); |
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d = FF(d, a, b, c, m[_i + 13], 12, -40341101); |
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c = FF(c, d, a, b, m[_i + 14], 17, -1502002290); |
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b = FF(b, c, d, a, m[_i + 15], 22, 1236535329); |
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a = GG(a, b, c, d, m[_i + 1], 5, -165796510); |
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d = GG(d, a, b, c, m[_i + 6], 9, -1069501632); |
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c = GG(c, d, a, b, m[_i + 11], 14, 643717713); |
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b = GG(b, c, d, a, m[_i + 0], 20, -373897302); |
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a = GG(a, b, c, d, m[_i + 5], 5, -701558691); |
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d = GG(d, a, b, c, m[_i + 10], 9, 38016083); |
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c = GG(c, d, a, b, m[_i + 15], 14, -660478335); |
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b = GG(b, c, d, a, m[_i + 4], 20, -405537848); |
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a = GG(a, b, c, d, m[_i + 9], 5, 568446438); |
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d = GG(d, a, b, c, m[_i + 14], 9, -1019803690); |
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c = GG(c, d, a, b, m[_i + 3], 14, -187363961); |
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b = GG(b, c, d, a, m[_i + 8], 20, 1163531501); |
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a = GG(a, b, c, d, m[_i + 13], 5, -1444681467); |
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d = GG(d, a, b, c, m[_i + 2], 9, -51403784); |
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c = GG(c, d, a, b, m[_i + 7], 14, 1735328473); |
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b = GG(b, c, d, a, m[_i + 12], 20, -1926607734); |
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a = HH(a, b, c, d, m[_i + 5], 4, -378558); |
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d = HH(d, a, b, c, m[_i + 8], 11, -2022574463); |
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c = HH(c, d, a, b, m[_i + 11], 16, 1839030562); |
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b = HH(b, c, d, a, m[_i + 14], 23, -35309556); |
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a = HH(a, b, c, d, m[_i + 1], 4, -1530992060); |
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d = HH(d, a, b, c, m[_i + 4], 11, 1272893353); |
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c = HH(c, d, a, b, m[_i + 7], 16, -155497632); |
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b = HH(b, c, d, a, m[_i + 10], 23, -1094730640); |
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a = HH(a, b, c, d, m[_i + 13], 4, 681279174); |
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d = HH(d, a, b, c, m[_i + 0], 11, -358537222); |
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c = HH(c, d, a, b, m[_i + 3], 16, -722521979); |
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b = HH(b, c, d, a, m[_i + 6], 23, 76029189); |
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a = HH(a, b, c, d, m[_i + 9], 4, -640364487); |
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d = HH(d, a, b, c, m[_i + 12], 11, -421815835); |
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c = HH(c, d, a, b, m[_i + 15], 16, 530742520); |
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b = HH(b, c, d, a, m[_i + 2], 23, -995338651); |
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a = II(a, b, c, d, m[_i + 0], 6, -198630844); |
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d = II(d, a, b, c, m[_i + 7], 10, 1126891415); |
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c = II(c, d, a, b, m[_i + 14], 15, -1416354905); |
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b = II(b, c, d, a, m[_i + 5], 21, -57434055); |
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a = II(a, b, c, d, m[_i + 12], 6, 1700485571); |
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d = II(d, a, b, c, m[_i + 3], 10, -1894986606); |
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c = II(c, d, a, b, m[_i + 10], 15, -1051523); |
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b = II(b, c, d, a, m[_i + 1], 21, -2054922799); |
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a = II(a, b, c, d, m[_i + 8], 6, 1873313359); |
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d = II(d, a, b, c, m[_i + 15], 10, -30611744); |
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c = II(c, d, a, b, m[_i + 6], 15, -1560198380); |
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b = II(b, c, d, a, m[_i + 13], 21, 1309151649); |
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a = II(a, b, c, d, m[_i + 4], 6, -145523070); |
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d = II(d, a, b, c, m[_i + 11], 10, -1120210379); |
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c = II(c, d, a, b, m[_i + 2], 15, 718787259); |
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b = II(b, c, d, a, m[_i + 9], 21, -343485551); |
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a = (a + aa) >>> 0; |
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b = (b + bb) >>> 0; |
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c = (c + cc) >>> 0; |
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d = (d + dd) >>> 0; |
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} |
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return hex.encode(wordsToBytes(endian([a, b, c, d]))); |
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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 >>> 0) + 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 >>> 0) + 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 >>> 0) + 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 >>> 0) + t; |
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return ((n << s) | (n >>> (32 - s))) + b; |
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} |
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function endian(n) { |
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if (n.constructor == Number) { |
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return (rotl(n, 8) & 0x00ff00ff) | (rotl(n, 24) & 0xff00ff00); |
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} |
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for (var i = 0; i < n.length; i++) n[i] = endian(n[i]); |
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return n; |
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} |
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function rotl(n, b) { |
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return (n << b) | (n >>> (32 - b)); |
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} |
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if (isNode) { |
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var crypto = eval('require')('crypto'); |
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exports = function(msg) { |
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if (isArr(msg)) { |
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msg = Buffer.from(msg); |
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} |
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var hash = crypto.createHash('md5'); |
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hash.update(msg); |
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return hash.digest('hex'); |
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}; |
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} |
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module.exports = exports;
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