借用一下
- function MD5(str)
- {
- x = str2blks_MD5(str);
- var a = 1732584193;
- var b = -271733879;
- var c = -1732584194;
- var d = 271733878;
-
- for(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 = add(a, olda);
- b = add(b, oldb);
- c = add(c, oldc);
- d = add(d, oldd);
- }
- return rhex(a) + rhex(b) + rhex(c) + rhex(d);
- }
复制代码 |