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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
dojo._xdResourceLoaded(function(dojo, dijit, dojox){
return {depends: [["provide", "dojox.encoding.digests.SHA1"],
["require", "dojox.encoding.digests._base"]],
defineResource: function(dojo, dijit, dojox){if(!dojo._hasResource["dojox.encoding.digests.SHA1"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.encoding.digests.SHA1"] = true;
dojo.provide("dojox.encoding.digests.SHA1");
dojo.require("dojox.encoding.digests._base");
/*
* A port of Paul Johnstone's SHA1 implementation
*
* Version 2.1a Copyright Paul Johnston 2000 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for details.
*
* Dojo port by Tom Trenka
*/
(function(){
var dxd=dojox.encoding.digests;
var chrsz=8, // change to 16 for unicode.
mask=(1<<chrsz)-1;
function R(n,c){ return (n<<c)|(n>>>(32-c)); }
function FT(t,b,c,d){
if(t<20){ return (b&c)|((~b)&d); }
if(t<40){ return b^c^d; }
if(t<60){ return (b&c)|(b&d)|(c&d); }
return b^c^d;
}
function KT(t){ return (t<20)?1518500249:(t<40)?1859775393:(t<60)?-1894007588:-899497514; }
function core(x,len){
x[len>>5]|=0x80<<(24-len%32);
x[((len+64>>9)<<4)+15]=len;
var w=new Array(80), a=1732584193, b=-271733879, c=-1732584194, d=271733878, e=-1009589776;
for(var i=0; i<x.length; i+=16){
var olda=a, oldb=b, oldc=c, oldd=d, olde=e;
for(var j=0;j<80;j++){
if(j<16){ w[j]=x[i+j]; }
else { w[j]=R(w[j-3]^w[j-8]^w[j-14]^w[j-16],1); }
var t = dxd.addWords(dxd.addWords(R(a,5),FT(j,b,c,d)),dxd.addWords(dxd.addWords(e,w[j]),KT(j)));
e=d; d=c; c=R(b,30); b=a; a=t;
}
a=dxd.addWords(a,olda);
b=dxd.addWords(b,oldb);
c=dxd.addWords(c,oldc);
d=dxd.addWords(d,oldd);
e=dxd.addWords(e,olde);
}
return [a, b, c, d, e];
}
function hmac(data, key){
var wa=toWord(key);
if(wa.length>16){ wa=core(wa, key.length*chrsz); }
var ipad=new Array(16), opad=new Array(16);
for(var i=0;i<16;i++){
ipad[i]=wa[i]^0x36363636;
opad[i]=wa[i]^0x5c5c5c5c;
}
var hash=core(ipad.concat(toWord(data)),512+data.length*chrsz);
return core(opad.concat(hash), 512+160);
}
function toWord(s){
var wa=[];
for(var i=0, l=s.length*chrsz; i<l; i+=chrsz){
wa[i>>5]|=(s.charCodeAt(i/chrsz)&mask)<<(32-chrsz-i%32);
}
return wa; // word[]
}
function toHex(wa){
// slightly different than the common one.
var h="0123456789abcdef", s=[];
for(var i=0, l=wa.length*4; i<l; i++){
s.push(h.charAt((wa[i>>2]>>((3-i%4)*8+4))&0xF), h.charAt((wa[i>>2]>>((3-i%4)*8))&0xF));
}
return s.join(""); // string
}
function _toString(wa){
var s=[];
for(var i=0, l=wa.length*32; i<l; i+=chrsz){
s.push(String.fromCharCode((wa[i>>5]>>>(32-chrsz-i%32))&mask));
}
return s.join(""); // string
}
function toBase64(/* word[] */wa){
// summary:
// convert an array of words to base64 encoding, should be more efficient
// than using dojox.encoding.base64
var p="=", tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", s=[];
for(var i=0, l=wa.length*4; i<l; i+=3){
var t=(((wa[i>>2]>>8*(3-i%4))&0xFF)<<16)|(((wa[i+1>>2]>>8*(3-(i+1)%4))&0xFF)<<8)|((wa[i+2>>2]>>8*(3-(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(""); // string
};
// public function
dxd.SHA1=function(/* String */data, /* dojox.encoding.digests.outputTypes? */outputType){
// summary:
// Computes the SHA1 digest of the data, and returns the result according to output type.
var out=outputType||dxd.outputTypes.Base64;
var wa=core(toWord(data), data.length*chrsz);
switch(out){
case dxd.outputTypes.Raw:{
return wa; // word[]
}
case dxd.outputTypes.Hex:{
return toHex(wa); // string
}
case dxd.outputTypes.String:{
return _toString(wa); // string
}
default:{
return toBase64(wa); // string
}
}
}
// make this private, for later use with a generic HMAC calculator.
dxd.SHA1._hmac=function(/* string */data, /* string */key, /* dojox.encoding.digests.outputTypes? */outputType){
// summary:
// computes the digest of data, and returns the result according to type outputType
var out=outputType || dxd.outputTypes.Base64;
var wa=hmac(data, key);
switch(out){
case dxd.outputTypes.Raw:{
return wa; // word[]
}
case dxd.outputTypes.Hex:{
return toHex(wa); // string
}
case dxd.outputTypes.String:{
return _toString(wa); // string
}
default:{
return toBase64(wa); // string
}
}
};
})();
}
}};});
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