MD5 32位码的FLASH算法

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function md5(s) {

return binl2hex(core_md5(str2binl(s), s.length*strsize));

}

function core_md5(x, len) {

x[len >> 5] = (x[len >> 5]) | (128 << len%32);

x[(((len+64) >>> 9) << 4)+14] = len;

var a = 1732584193;

var b = -271733879;

var c = -1732584194;

var d = 271733878;

var i = 0;

while (i<x.length) {

var olda = a;

var oldb = b;

var oldc = c;

var oldd = d;

a = md5_ff(a, b, c, d, x[i+0], 7, -680876936);

d = md5_ff(d, a, b, c, x[i+1], 12, -389564586);

c = md5_ff(c, d, a, b, x[i+2], 17, 606105819);

b = md5_ff(b, c, d, a, x[i+3], 22, -1044525330);

a = md5_ff(a, b, c, d, x[i+4], 7, -176418897);

d = md5_ff(d, a, b, c, x[i+5], 12, 1200080426);

c = md5_ff(c, d, a, b, x[i+6], 17, -1473231341);

b = md5_ff(b, c, d, a, x[i+7], 22, -45705983);

a = md5_ff(a, b, c, d, x[i+8], 7, 1770035416);

d = md5_ff(d, a, b, c, x[i+9], 12, -1958414417);

c = md5_ff(c, d, a, b, x[i+10], 17, -42063);

b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);

a = md5_ff(a, b, c, d, x[i+12], 7, 1804603682);

d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);

c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);

b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);

a = md5_gg(a, b, c, d, x[i+1], 5, -165796510);

d = md5_gg(d, a, b, c, x[i+6], 9, -1069501632);

c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);

b = md5_gg(b, c, d, a, x[i+0], 20, -373897302);

a = md5_gg(a, b, c, d, x[i+5], 5, -701558691);

d = md5_gg(d, a, b, c, x[i+10], 9, 38016083);

c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);

b = md5_gg(b, c, d, a, x[i+4], 20, -405537848);

a = md5_gg(a, b, c, d, x[i+9], 5, 568446438);

d = md5_gg(d, a, b, c, x[i+14], 9, -1019803690);

c = md5_gg(c, d, a, b, x[i+3], 14, -187363961);

b = md5_gg(b, c, d, a, x[i+8], 20, 1163531501);

a = md5_gg(a, b, c, d, x[i+13], 5, -1444681467);

d = md5_gg(d, a, b, c, x[i+2], 9, -51403784);

c = md5_gg(c, d, a, b, x[i+7], 14, 1735328473);

b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

a = md5_hh(a, b, c, d, x[i+5], 4, -378558);

d = md5_hh(d, a, b, c, x[i+8], 11, -2022574463);

c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);

b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);

a = md5_hh(a, b, c, d, x[i+1], 4, -1530992060);

d = md5_hh(d, a, b, c, x[i+4], 11, 1272893353);

c = md5_hh(c, d, a, b, x[i+7], 16, -155497632);

b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);

a = md5_hh(a, b, c, d, x[i+13], 4, 681279174);

d = md5_hh(d, a, b, c, x[i+0], 11, -358537222);

c = md5_hh(c, d, a, b, x[i+3], 16, -722521979);

b = md5_hh(b, c, d, a, x[i+6], 23, 76029189);

a = md5_hh(a, b, c, d, x[i+9], 4, -640364487);

d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);

c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);

b = md5_hh(b, c, d, a, x[i+2], 23, -995338651);

a = md5_ii(a, b, c, d, x[i+0], 6, -198630844);

d = md5_ii(d, a, b, c, x[i+7], 10, 1126891415);

c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);

b = md5_ii(b, c, d, a, x[i+5], 21, -57434055);

a = md5_ii(a, b, c, d, x[i+12], 6, 1700485571);

d = md5_ii(d, a, b, c, x[i+3], 10, -1894986606);

c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);

b = md5_ii(b, c, d, a, x[i+1], 21, -2054922799);

a = md5_ii(a, b, c, d, x[i+8], 6, 1873313359);

d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);

c = md5_ii(c, d, a, b, x[i+6], 15, -1560198380);

b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);

a = md5_ii(a, b, c, d, x[i+4], 6, -145523070);

d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);

c = md5_ii(c, d, a, b, x[i+2], 15, 718787259);

b = md5_ii(b, c, d, a, x[i+9], 21, -343485551);

a = safe_add(a, olda);

b = safe_add(b, oldb);

c = safe_add(c, oldc);

d = safe_add(d, oldd);

i = i+16;

}

return Array(a, b, c, d);

}

function md5_cmn(q, a, b, x, s, t) {

return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);

}

function md5_ff(a, b, c, d, x, s, t) {

return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);

}

function md5_gg(a, b, c, d, x, s, t) {

return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);

}

function md5_hh(a, b, c, d, x, s, t) {

return md5_cmn((b ^ c) ^ d, a, b, x, s, t);

}

function md5_ii(a, b, c, d, x, s, t) {

return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);

}

function safe_add(x, y) {

var lsw = (x & 65535)+(y & 65535);

var msw = ((x >> 16)+(y >> 16))+(lsw >> 16);

return (msw << 16) | (lsw & 65535);

}

function bit_rol(num, cnt) {

return (num << cnt) | (num >>> (32-cnt));

}

function str2binl(str) {

var bin = Array();

var mask = (1 << strsize)-1;

var i = 0;

while (i<(str.length*strsize)) {

bin[i >> 5] = (bin[i >> 5]) | ((str.charCodeAt(i/strsize) & mask) << i%32);

i = i+strsize;

}

return bin;

}

function binl2hex(binarray) {

if (hexcase) {

} else {

}

var hex_tab = "0123456789abcdef";

var str = "";

var i = 0;

while (i<(binarray.length*4)) {

str = str+(hex_tab.charAt(((binarray[i >> 2]) >> ((i%4*8)+4)) & 15)+hex_tab.charAt(((binarray[i >> 2]) >> (i%4*8)) & 15));

i++;

}

return str;

}

var hexcase = 0;

var strsize = 8;

//--------以上不用修改，

b = md5("xx");

//xx可设为任意字符

s = b.toUpperCase();

//转换成大写

trace(b);

trace(s);

来源: 闪吧