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MD5.js
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MD5.js
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if(!dojo._hasResource["dojox.crypto.MD5"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.crypto.MD5"] = true;
dojo.provide("dojox.crypto.MD5");
dojo.require("dojox.crypto._base");
/* Return to a port of Paul Johnstone's MD5 implementation
* http://pajhome.org.uk/crypt/md5/index.html
*
* Copyright (C) Paul Johnston 1999 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
*
* Dojo port by Tom Trenka
*
* 2005-12-7
* All conversions are internalized (no dependencies)
* implemented getHMAC for message digest auth.
*/
dojox.crypto.MD5 = new function(){
// summary
// object for creating digests using the MD5 algorithm
var chrsz=8;
var mask=(1<<chrsz)-1;
function toWord(s) {
var wa=[];
for(var i=0; i<s.length*chrsz; i+=chrsz)
wa[i>>5]|=(s.charCodeAt(i/chrsz)&mask)<<(i%32);
return wa;
}
function toString(wa){
var s=[];
for(var i=0; i<wa.length*32; i+=chrsz)
s.push(String.fromCharCode((wa[i>>5]>>>(i%32))&mask));
return s.join("");
}
function toHex(wa) {
var h="0123456789abcdef";
var s=[];
for(var i=0; i<wa.length*4; i++){
s.push(h.charAt((wa[i>>2]>>((i%4)*8+4))&0xF)+h.charAt((wa[i>>2]>>((i%4)*8))&0xF));
}
return s.join("");
}
function toBase64(wa){
var p="=";
var tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var s=[];
for(var i=0; i<wa.length*4; i+=3){
var t=(((wa[i>>2]>>8*(i%4))&0xFF)<<16)|(((wa[i+1>>2]>>8*((i+1)%4))&0xFF)<<8)|((wa[i+2>>2]>>8*((i+2)%4))&0xFF);
for(var j=0; j<4; j++){
if(i*8+j*6>wa.length*32) s.push(p);
else s.push(tab.charAt((t>>6*(3-j))&0x3F));
}
}
return s.join("");
}
function add(x,y) {
var l=(x&0xFFFF)+(y&0xFFFF);
var m=(x>>16)+(y>>16)+(l>>16);
return (m<<16)|(l&0xFFFF);
}
function R(n,c){ return (n<<c)|(n>>>(32-c)); }
function C(q,a,b,x,s,t){ return add(R(add(add(a,q),add(x,t)),s),b); }
function FF(a,b,c,d,x,s,t){ return C((b&c)|((~b)&d),a,b,x,s,t); }
function GG(a,b,c,d,x,s,t){ return C((b&d)|(c&(~d)),a,b,x,s,t); }
function HH(a,b,c,d,x,s,t){ return C(b^c^d,a,b,x,s,t); }
function II(a,b,c,d,x,s,t){ return C(c^(b|(~d)),a,b,x,s,t); }
function core(x,len){
x[len>>5]|=0x80<<((len)%32);
x[(((len+64)>>>9)<<4)+14]=len;
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 = add(a,olda);
b = add(b,oldb);
c = add(c,oldc);
d = add(d,oldd);
}
return [a,b,c,d];
}
function hmac(data,key){
var wa=toWord(key);
if(wa.length>16) wa=core(wa,key.length*chrsz);
var l=[], r=[];
for(var i=0; i<16; i++){
l[i]=wa[i]^0x36363636;
r[i]=wa[i]^0x5c5c5c5c;
}
var h=core(l.concat(toWord(data)),512+data.length*chrsz);
return core(r.concat(h),640);
}
// Public functions
this.compute=function(/* string */data, /* dojox.crypto.outputTypes */outputType){
// summary
// computes the digest of data, and returns the result as a string of type outputType
var out=outputType||dojox.crypto.outputTypes.Base64;
switch(out){
case dojox.crypto.outputTypes.Hex:{
return toHex(core(toWord(data),data.length*chrsz)); // string
}
case dojox.crypto.outputTypes.String:{
return toString(core(toWord(data),data.length*chrsz)); // string
}
default:{
return toBase64(core(toWord(data),data.length*chrsz)); // string
}
}
};
this.getHMAC=function(/* string */data, /* string */key, /* dojox.crypto.outputTypes */outputType){
// summary
// computes a digest of data using key, and returns the result as a string of outputType
var out=outputType||dojox.crypto.outputTypes.Base64;
switch(out){
case dojox.crypto.outputTypes.Hex:{
return toHex(hmac(data,key)); // string
}
case dojox.crypto.outputTypes.String:{
return toString(hmac(data,key)); // string
}
default:{
return toBase64(hmac(data,key)); // string
}
}
};
}();
}

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