/* MD5 Message-Digest Algorithm - JavaScript
' MODIFICATION HISTORY:
' 1.0 16-Feb-2001 - Phil Fresle (sales@frez.co.uk) - Initial Version (VB/ASP code)
' 1.0 21-Feb-2001 - Enrico Mosanghini (erik504@yahoo.com) - JavaScript porting
*/
function MD5(sMessage) {
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(sMessage) {
var lwordCount;
var lMessageLength = sMessage.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;
lwordArray[lwordCount] = (lwordArray[lwordCount] | (sMessage.charCodeAt(lByteCount)< lByteCount++; } lwordCount = (lByteCount-(lByteCount % 4))/4; lBytePosition = (lByteCount % 4)*8; lwordArray[lwordCount] = lwordArray[lwordCount] | (0x80< lwordArray[lNumberOfwords-2] = lMessageLength<>>29; return lwordArray; } function wordToHex(lValue) { var wordToHexValue="",wordToHexValue_temp="",lByte,lCount; for (lCount = 0;lCount>>(lCount*8)) & 255; wordToHexValue_temp = "0" + lByte.toString(16); wordToHexValue = wordToHexValue + wordToHexValue_temp.substr(wordToHexValue_temp.length-2,2); } return wordToHexValue; } 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; // Steps 1 and 2. Append padding bits and length and convert to words x = ConvertTowordArray(sMessage); // Step 3. Initialise a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; // Step 4. Process the message in 16-word blocks for (k=0;k AA=a; BB=b; CC=c; DD=d; a=FF(a,b,c,d,x[k+0], S11,0xD76AA478); d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756); c=FF(c,d,a,b,x[k+2], S13,0x242070DB); b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE); a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF); d=FF(d,a,b,c,x[k+5], S12,0x4787C62A); c=FF(c,d,a,b,x[k+6], S13,0xA8304613); b=FF(b,c,d,a,x[k+7], S14,0xFD469501); a=FF(a,b,c,d,x[k+8], S11,0x698098D8); d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF); c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1); b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE); a=FF(a,b,c,d,x[k+12],S11,0x6B901122); d=FF(d,a,b,c,x[k+13],S12,0xFD987193); c=FF(c,d,a,b,x[k+14],S13,0xA679438E); b=FF(b,c,d,a,x[k+15],S14,0x49B40821); a=GG(a,b,c,d,x[k+1], S21,0xF61E2562); d=GG(d,a,b,c,x[k+6], S22,0xC040B340); c=GG(c,d,a,b,x[k+11],S23,0x265E5A51); b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA); a=GG(a,b,c,d,x[k+5], S21,0xD62F105D); d=GG(d,a,b,c,x[k+10],S22,0x2441453); c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681); b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8); a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6); d=GG(d,a,b,c,x[k+14],S22,0xC33707D6); c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87); b=GG(b,c,d,a,x[k+8], S24,0x455A14ED); a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905); d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8); c=GG(c,d,a,b,x[k+7], S23,0x676F02D9); b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A); a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942); d=HH(d,a,b,c,x[k+8], S32,0x8771F681); c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122); b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C); a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44); d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9); c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60); b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70); a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6); d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA); c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085); b=HH(b,c,d,a,x[k+6], S34,0x4881D05); a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039); d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5); c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8); b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665); a=II(a,b,c,d,x[k+0], S41,0xF4292244); d=II(d,a,b,c,x[k+7], S42,0x432AFF97); c=II(c,d,a,b,x[k+14],S43,0xAB9423A7); b=II(b,c,d,a,x[k+5], S44,0xFC93A039); a=II(a,b,c,d,x[k+12],S41,0x655B59C3); d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92); c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D); b=II(b,c,d,a,x[k+1], S44,0x85845DD1); a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F); d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0); c=II(c,d,a,b,x[k+6], S43,0xA3014314); b=II(b,c,d,a,x[k+13],S44,0x4E0811A1); a=II(a,b,c,d,x[k+4], S41,0xF7537E82); d=II(d,a,b,c,x[k+11],S42,0xBD3AF235); c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB); b=II(b,c,d,a,x[k+9], S44,0xEB86D391); a=AddUnsigned(a,AA); b=AddUnsigned(b,BB); c=AddUnsigned(c,CC); d=AddUnsigned(d,DD); } // Step 5. Output the 128 bit digest var temp= wordToHex(a)+wordToHex(b)+wordToHex(c)+wordToHex(d); return temp.toLowerCase(); }