JavaScript MD5
/**
* source: http://css-tricks.com/snippets/javascript/javascript-md5/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+CSS-TricksSnippets+%28CSS-Tricks+Snippet+Feed%29
* usage: MD5("whatever");
*/
var MD5 = function (string) {
function RotateLeft(lValue, iShiftBits) {
return (lValue<>>(32-iShiftBits));
}
function AddUnsigned(lX,lY) {
var lX4,lY4,lX8,lY8,lResult;
lX8 = (lX & 0x80000000);
lY8 = (lY & 0x80000000);
lX4 = (lX & 0x40000000);
lY4 = (lY & 0x40000000);
lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
if (lX4 & lY4) {
return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
}
if (lX4 | lY4) {
if (lResult & 0x40000000) {
return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
} else {
return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
}
} else {
return (lResult ^ lX8 ^ lY8);
}
}
function F(x,y,z) { return (x & y) | ((~x) & z); }
function G(x,y,z) { return (x & z) | (y & (~z)); }
function H(x,y,z) { return (x ^ y ^ z); }
function I(x,y,z) { return (y ^ (x | (~z))); }
function FF(a,b,c,d,x,s,ac) {
a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
return AddUnsigned(RotateLeft(a, s), b);
};
function GG(a,b,c,d,x,s,ac) {
a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
return AddUnsigned(RotateLeft(a, s), b);
};
function HH(a,b,c,d,x,s,ac) {
a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
return AddUnsigned(RotateLeft(a, s), b);
};
function II(a,b,c,d,x,s,ac) {
a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
return AddUnsigned(RotateLeft(a, s), b);
};
function ConvertToWordArray(string) {
var lWordCount;
var lMessageLength = string.length;
var lNumberOfWords_temp1=lMessageLength + 8;
var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
var lWordArray=Array(lNumberOfWords-1);
var lBytePosition = 0;
var lByteCount = 0;
while ( lByteCount < lMessageLength ) {
lWordCount = (lByteCount-(lByteCount % 4))/4;
lBytePosition = (lByteCount % 4)*8;
lWordArraylWordCount = (lWordArraylWordCount | (string.charCodeAt(lByteCount)<lWordCount = lWordArraylWordCount | (0x80<lNumberOfWords-2 = lMessageLength<<3;
lWordArraylNumberOfWords-1 = lMessageLength>>>29;
return lWordArray;
};
function WordToHex(lValue) {
var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
for (lCount = 0;lCount<=3;lCount++) {
lByte = (lValue>>>(lCount*8)) & 255;
WordToHexValue_temp = "0" + lByte.toString(16);
WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
}
return WordToHexValue;
};
function Utf8Encode(string) {
string = string.replace(/\r\n/g,"\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
}
else if((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
}
else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
};
var x=Array();
var k,AA,BB,CC,DD,a,b,c,d;
var S11=7, S12=12, S13=17, S14=22;
var S21=5, S22=9 , S23=14, S24=20;
var S31=4, S32=11, S33=16, S34=23;
var S41=6, S42=10, S43=15, S44=21;
string = Utf8Encode(string);
x = ConvertToWordArray(string);
a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
for (k=0;kk+0, S11,0xD76AA478);
d=FF(d,a,b,c,xk+1, S12,0xE8C7B756);
c=FF(c,d,a,b,xk+2, S13,0x242070DB);
b=FF(b,c,d,a,xk+3, S14,0xC1BDCEEE);
a=FF(a,b,c,d,xk+4, S11,0xF57C0FAF);
d=FF(d,a,b,c,xk+5, S12,0x4787C62A);
c=FF(c,d,a,b,xk+6, S13,0xA8304613);
b=FF(b,c,d,a,xk+7, S14,0xFD469501);
a=FF(a,b,c,d,xk+8, S11,0x698098D8);
d=FF(d,a,b,c,xk+9, S12,0x8B44F7AF);
c=FF(c,d,a,b,xk+10,S13,0xFFFF5BB1);
b=FF(b,c,d,a,xk+11,S14,0x895CD7BE);
a=FF(a,b,c,d,xk+12,S11,0x6B901122);
d=FF(d,a,b,c,xk+13,S12,0xFD987193);
c=FF(c,d,a,b,xk+14,S13,0xA679438E);
b=FF(b,c,d,a,xk+15,S14,0x49B40821);
a=GG(a,b,c,d,xk+1, S21,0xF61E2562);
d=GG(d,a,b,c,xk+6, S22,0xC040B340);
c=GG(c,d,a,b,xk+11,S23,0x265E5A51);
b=GG(b,c,d,a,xk+0, S24,0xE9B6C7AA);
a=GG(a,b,c,d,xk+5, S21,0xD62F105D);
d=GG(d,a,b,c,xk+10,S22,0x2441453);
c=GG(c,d,a,b,xk+15,S23,0xD8A1E681);
b=GG(b,c,d,a,xk+4, S24,0xE7D3FBC8);
a=GG(a,b,c,d,xk+9, S21,0x21E1CDE6);
d=GG(d,a,b,c,xk+14,S22,0xC33707D6);
c=GG(c,d,a,b,xk+3, S23,0xF4D50D87);
b=GG(b,c,d,a,xk+8, S24,0x455A14ED);
a=GG(a,b,c,d,xk+13,S21,0xA9E3E905);
d=GG(d,a,b,c,xk+2, S22,0xFCEFA3F8);
c=GG(c,d,a,b,xk+7, S23,0x676F02D9);
b=GG(b,c,d,a,xk+12,S24,0x8D2A4C8A);
a=HH(a,b,c,d,xk+5, S31,0xFFFA3942);
d=HH(d,a,b,c,xk+8, S32,0x8771F681);
c=HH(c,d,a,b,xk+11,S33,0x6D9D6122);
b=HH(b,c,d,a,xk+14,S34,0xFDE5380C);
a=HH(a,b,c,d,xk+1, S31,0xA4BEEA44);
d=HH(d,a,b,c,xk+4, S32,0x4BDECFA9);
c=HH(c,d,a,b,xk+7, S33,0xF6BB4B60);
b=HH(b,c,d,a,xk+10,S34,0xBEBFBC70);
a=HH(a,b,c,d,xk+13,S31,0x289B7EC6);
d=HH(d,a,b,c,xk+0, S32,0xEAA127FA);
c=HH(c,d,a,b,xk+3, S33,0xD4EF3085);
b=HH(b,c,d,a,xk+6, S34,0x4881D05);
a=HH(a,b,c,d,xk+9, S31,0xD9D4D039);
d=HH(d,a,b,c,xk+12,S32,0xE6DB99E5);
c=HH(c,d,a,b,xk+15,S33,0x1FA27CF8);
b=HH(b,c,d,a,xk+2, S34,0xC4AC5665);
a=II(a,b,c,d,xk+0, S41,0xF4292244);
d=II(d,a,b,c,xk+7, S42,0x432AFF97);
c=II(c,d,a,b,xk+14,S43,0xAB9423A7);
b=II(b,c,d,a,xk+5, S44,0xFC93A039);
a=II(a,b,c,d,xk+12,S41,0x655B59C3);
d=II(d,a,b,c,xk+3, S42,0x8F0CCC92);
c=II(c,d,a,b,xk+10,S43,0xFFEFF47D);
b=II(b,c,d,a,xk+1, S44,0x85845DD1);
a=II(a,b,c,d,xk+8, S41,0x6FA87E4F);
d=II(d,a,b,c,xk+15,S42,0xFE2CE6E0);
c=II(c,d,a,b,xk+6, S43,0xA3014314);
b=II(b,c,d,a,xk+13,S44,0x4E0811A1);
a=II(a,b,c,d,xk+4, S41,0xF7537E82);
d=II(d,a,b,c,xk+11,S42,0xBD3AF235);
c=II(c,d,a,b,xk+2, S43,0x2AD7D2BB);
b=II(b,c,d,a,xk+9, S44,0xEB86D391);
a=AddUnsigned(a,AA);
b=AddUnsigned(b,BB);
c=AddUnsigned(c,CC);
d=AddUnsigned(d,DD);
}
var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
return temp.toLowerCase();
}
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