| "use strict"; |
| |
| /** |
| * Expose `md5omatic(str)`. |
| */ |
| |
| module.exports = md5omatic; |
| |
| /** |
| * Hash any string using message digest. |
| * |
| * @param {String} str |
| * @return {String} |
| * @api public |
| */ |
| |
| function md5omatic(str) { |
| var x = str2blks_MD5(str); |
| var a = 1732584193; |
| var b = -271733879; |
| var c = -1732584194; |
| var d = 271733878; |
| |
| for(var i=0; i<x.length; i += 16) |
| { |
| var olda = a; |
| var oldb = b; |
| var oldc = c; |
| var oldd = d; |
| |
| a = ff(a, b, c, d, x[i+ 0], 7 , -680876936); |
| d = ff(d, a, b, c, x[i+ 1], 12, -389564586); |
| c = ff(c, d, a, b, x[i+ 2], 17, 606105819); |
| b = ff(b, c, d, a, x[i+ 3], 22, -1044525330); |
| a = ff(a, b, c, d, x[i+ 4], 7 , -176418897); |
| d = ff(d, a, b, c, x[i+ 5], 12, 1200080426); |
| c = ff(c, d, a, b, x[i+ 6], 17, -1473231341); |
| b = ff(b, c, d, a, x[i+ 7], 22, -45705983); |
| a = ff(a, b, c, d, x[i+ 8], 7 , 1770035416); |
| d = ff(d, a, b, c, x[i+ 9], 12, -1958414417); |
| c = ff(c, d, a, b, x[i+10], 17, -42063); |
| b = ff(b, c, d, a, x[i+11], 22, -1990404162); |
| a = ff(a, b, c, d, x[i+12], 7 , 1804603682); |
| d = ff(d, a, b, c, x[i+13], 12, -40341101); |
| c = ff(c, d, a, b, x[i+14], 17, -1502002290); |
| b = ff(b, c, d, a, x[i+15], 22, 1236535329); |
| a = gg(a, b, c, d, x[i+ 1], 5 , -165796510); |
| d = gg(d, a, b, c, x[i+ 6], 9 , -1069501632); |
| c = gg(c, d, a, b, x[i+11], 14, 643717713); |
| b = gg(b, c, d, a, x[i+ 0], 20, -373897302); |
| a = gg(a, b, c, d, x[i+ 5], 5 , -701558691); |
| d = gg(d, a, b, c, x[i+10], 9 , 38016083); |
| c = gg(c, d, a, b, x[i+15], 14, -660478335); |
| b = gg(b, c, d, a, x[i+ 4], 20, -405537848); |
| a = gg(a, b, c, d, x[i+ 9], 5 , 568446438); |
| d = gg(d, a, b, c, x[i+14], 9 , -1019803690); |
| c = gg(c, d, a, b, x[i+ 3], 14, -187363961); |
| b = gg(b, c, d, a, x[i+ 8], 20, 1163531501); |
| a = gg(a, b, c, d, x[i+13], 5 , -1444681467); |
| d = gg(d, a, b, c, x[i+ 2], 9 , -51403784); |
| c = gg(c, d, a, b, x[i+ 7], 14, 1735328473); |
| b = gg(b, c, d, a, x[i+12], 20, -1926607734); |
| a = hh(a, b, c, d, x[i+ 5], 4 , -378558); |
| d = hh(d, a, b, c, x[i+ 8], 11, -2022574463); |
| c = hh(c, d, a, b, x[i+11], 16, 1839030562); |
| b = hh(b, c, d, a, x[i+14], 23, -35309556); |
| a = hh(a, b, c, d, x[i+ 1], 4 , -1530992060); |
| d = hh(d, a, b, c, x[i+ 4], 11, 1272893353); |
| c = hh(c, d, a, b, x[i+ 7], 16, -155497632); |
| b = hh(b, c, d, a, x[i+10], 23, -1094730640); |
| a = hh(a, b, c, d, x[i+13], 4 , 681279174); |
| d = hh(d, a, b, c, x[i+ 0], 11, -358537222); |
| c = hh(c, d, a, b, x[i+ 3], 16, -722521979); |
| b = hh(b, c, d, a, x[i+ 6], 23, 76029189); |
| a = hh(a, b, c, d, x[i+ 9], 4 , -640364487); |
| d = hh(d, a, b, c, x[i+12], 11, -421815835); |
| c = hh(c, d, a, b, x[i+15], 16, 530742520); |
| b = hh(b, c, d, a, x[i+ 2], 23, -995338651); |
| a = ii(a, b, c, d, x[i+ 0], 6 , -198630844); |
| d = ii(d, a, b, c, x[i+ 7], 10, 1126891415); |
| c = ii(c, d, a, b, x[i+14], 15, -1416354905); |
| b = ii(b, c, d, a, x[i+ 5], 21, -57434055); |
| a = ii(a, b, c, d, x[i+12], 6 , 1700485571); |
| d = ii(d, a, b, c, x[i+ 3], 10, -1894986606); |
| c = ii(c, d, a, b, x[i+10], 15, -1051523); |
| b = ii(b, c, d, a, x[i+ 1], 21, -2054922799); |
| a = ii(a, b, c, d, x[i+ 8], 6 , 1873313359); |
| d = ii(d, a, b, c, x[i+15], 10, -30611744); |
| c = ii(c, d, a, b, x[i+ 6], 15, -1560198380); |
| b = ii(b, c, d, a, x[i+13], 21, 1309151649); |
| a = ii(a, b, c, d, x[i+ 4], 6 , -145523070); |
| d = ii(d, a, b, c, x[i+11], 10, -1120210379); |
| c = ii(c, d, a, b, x[i+ 2], 15, 718787259); |
| b = ii(b, c, d, a, x[i+ 9], 21, -343485551); |
| |
| a = addme(a, olda); |
| b = addme(b, oldb); |
| c = addme(c, oldc); |
| d = addme(d, oldd); |
| } |
| |
| return rhex(a) + rhex(b) + rhex(c) + rhex(d); |
| }; |
| |
| var hex_chr = "0123456789abcdef"; |
| |
| function bitOR(a, b) |
| { |
| var lsb = (a & 0x1) | (b & 0x1); |
| var msb31 = (a >>> 1) | (b >>> 1); |
| |
| return (msb31 << 1) | lsb; |
| } |
| |
| function bitXOR(a, b) |
| { |
| var lsb = (a & 0x1) ^ (b & 0x1); |
| var msb31 = (a >>> 1) ^ (b >>> 1); |
| |
| return (msb31 << 1) | lsb; |
| } |
| |
| function bitAND(a, b) |
| { |
| var lsb = (a & 0x1) & (b & 0x1); |
| var msb31 = (a >>> 1) & (b >>> 1); |
| |
| return (msb31 << 1) | lsb; |
| } |
| |
| function addme(x, y) |
| { |
| var lsw = (x & 0xFFFF)+(y & 0xFFFF); |
| var msw = (x >> 16)+(y >> 16)+(lsw >> 16); |
| |
| return (msw << 16) | (lsw & 0xFFFF); |
| } |
| |
| function rhex(num) |
| { |
| var str = ""; |
| var j; |
| |
| for(j=0; j<=3; j++) |
| str += hex_chr.charAt((num >> (j * 8 + 4)) & 0x0F) + hex_chr.charAt((num >> (j * 8)) & 0x0F); |
| |
| return str; |
| } |
| |
| function str2blks_MD5(str) |
| { |
| var nblk = ((str.length + 8) >> 6) + 1; |
| var blks = new Array(nblk * 16); |
| var i; |
| |
| for(i=0; i<nblk * 16; i++) |
| blks[i] = 0; |
| |
| for(i=0; i<str.length; i++) |
| blks[i >> 2] |= str.charCodeAt(i) << (((str.length * 8 + i) % 4) * 8); |
| |
| blks[i >> 2] |= 0x80 << (((str.length * 8 + i) % 4) * 8); |
| |
| var l = str.length * 8; |
| blks[nblk * 16 - 2] = (l & 0xFF); |
| blks[nblk * 16 - 2] |= ((l >>> 8) & 0xFF) << 8; |
| blks[nblk * 16 - 2] |= ((l >>> 16) & 0xFF) << 16; |
| blks[nblk * 16 - 2] |= ((l >>> 24) & 0xFF) << 24; |
| |
| return blks; |
| } |
| |
| function rol(num, cnt) |
| { |
| return (num << cnt) | (num >>> (32 - cnt)); |
| } |
| |
| function cmn(q, a, b, x, s, t) |
| { |
| return addme(rol((addme(addme(a, q), addme(x, t))), s), b); |
| } |
| |
| function ff(a, b, c, d, x, s, t) |
| { |
| return cmn(bitOR(bitAND(b, c), bitAND((~b), d)), a, b, x, s, t); |
| } |
| |
| function gg(a, b, c, d, x, s, t) |
| { |
| return cmn(bitOR(bitAND(b, d), bitAND(c, (~d))), a, b, x, s, t); |
| } |
| |
| function hh(a, b, c, d, x, s, t) |
| { |
| return cmn(bitXOR(bitXOR(b, c), d), a, b, x, s, t); |
| } |
| |
| function ii(a, b, c, d, x, s, t) |
| { |
| return cmn(bitXOR(c, bitOR(b, (~d))), a, b, x, s, t); |
| } |