root / trunk / web / dojo / dojox / encoding / digests / SHA1.js @ 12
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.encoding.digests.SHA1"]){ |
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dojo._hasResource["dojox.encoding.digests.SHA1"]=true; |
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dojo.provide("dojox.encoding.digests.SHA1");
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dojo.require("dojox.encoding.digests._base");
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(function(){
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var _1=dojox.encoding.digests;
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var _2=8,_3=(1<<_2)-1; |
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function R(n,c){ |
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return (n<<c)|(n>>>(32-c)); |
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}; |
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function FT(t,b,c,d){ |
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if(t<20){ |
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return (b&c)|((~b)&d);
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} |
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if(t<40){ |
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return b^c^d;
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} |
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if(t<60){ |
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return (b&c)|(b&d)|(c&d);
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} |
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return b^c^d;
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}; |
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function KT(t){ |
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return (t<20)?1518500249:(t<40)?1859775393:(t<60)?-1894007588:-899497514; |
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}; |
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function _4(x,_5){ |
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x[_5>>5]|=128<<(24-_5%32); |
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x[((_5+64>>9)<<4)+15]=_5; |
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var w=new Array(80),a=1732584193,b=-271733879,c=-1732584194,d=271733878,e=-1009589776; |
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for(var i=0;i<x.length;i+=16){ |
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var _6=a,_7=b,_8=c,_9=d,_a=e;
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for(var j=0;j<80;j++){ |
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if(j<16){ |
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w[j]=x[i+j]; |
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}else{
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w[j]=R(w[j-3]^w[j-8]^w[j-14]^w[j-16],1); |
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} |
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var t=_1.addWords(_1.addWords(R(a,5),FT(j,b,c,d)),_1.addWords(_1.addWords(e,w[j]),KT(j))); |
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e=d; |
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d=c; |
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c=R(b,30);
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b=a; |
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a=t; |
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} |
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a=_1.addWords(a,_6); |
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b=_1.addWords(b,_7); |
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c=_1.addWords(c,_8); |
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d=_1.addWords(d,_9); |
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e=_1.addWords(e,_a); |
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} |
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return [a,b,c,d,e];
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}; |
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function _b(_c,_d){ |
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var wa=_e(_d);
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if(wa.length>16){ |
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wa=_4(wa,_d.length*_2); |
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} |
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var _f=new Array(16),_10=new Array(16); |
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for(var i=0;i<16;i++){ |
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_f[i]=wa[i]^909522486;
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_10[i]=wa[i]^1549556828;
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} |
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var _11=_4(_f.concat(_e(_c)),512+_c.length*_2); |
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return _4(_10.concat(_11),512+160); |
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}; |
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function _e(s){ |
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var wa=[];
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for(var i=0,l=s.length*_2;i<l;i+=_2){ |
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wa[i>>5]|=(s.charCodeAt(i/_2)&_3)<<(32-_2-i%32); |
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} |
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return wa;
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}; |
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function _12(wa){ |
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var h="0123456789abcdef",s=[]; |
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for(var i=0,l=wa.length*4;i<l;i++){ |
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s.push(h.charAt((wa[i>>2]>>((3-i%4)*8+4))&15),h.charAt((wa[i>>2]>>((3-i%4)*8))&15)); |
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} |
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return s.join(""); |
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}; |
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function _13(wa){ |
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var s=[];
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for(var i=0,l=wa.length*32;i<l;i+=_2){ |
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s.push(String.fromCharCode((wa[i>>5]>>>(32-_2-i%32))&_3)); |
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} |
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return s.join(""); |
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}; |
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function _14(wa){ |
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var p="=",tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",s=[]; |
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for(var i=0,l=wa.length*4;i<l;i+=3){ |
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var t=(((wa[i>>2]>>8*(3-i%4))&255)<<16)|(((wa[i+1>>2]>>8*(3-(i+1)%4))&255)<<8)|((wa[i+2>>2]>>8*(3-(i+2)%4))&255); |
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for(var j=0;j<4;j++){ |
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if(i*8+j*6>wa.length*32){ |
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s.push(p); |
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}else{
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s.push(tab.charAt((t>>6*(3-j))&63)); |
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} |
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} |
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} |
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return s.join(""); |
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}; |
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_1.SHA1=function(_15,_16){ |
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var out=_16||_1.outputTypes.Base64;
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var wa=_4(_e(_15),_15.length*_2);
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switch(out){
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case _1.outputTypes.Raw:
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return wa;
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case _1.outputTypes.Hex:
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return _12(wa);
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case _1.outputTypes.String:
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return _13(wa);
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default:
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return _14(wa);
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} |
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}; |
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_1.SHA1._hmac=function(_17,key,_18){ |
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var out=_18||_1.outputTypes.Base64;
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var wa=_b(_17,key);
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switch(out){
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case _1.outputTypes.Raw:
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return wa;
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case _1.outputTypes.Hex:
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return _12(wa);
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case _1.outputTypes.String:
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return _13(wa);
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default:
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return _14(wa);
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} |
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}; |
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})(); |
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} |