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172 lines
5.3 KiB
172 lines
5.3 KiB
define(["./_base"], function(base) { |
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/* A port of Paul Johnstone's MD5 implementation |
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* http://pajhome.org.uk/crypt/md5/index.html |
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* |
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* Copyright (C) Paul Johnston 1999 - 2002. |
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* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet |
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* Distributed under the BSD License |
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* |
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* Dojo port by Tom Trenka |
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*/ |
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var chrsz=8; |
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// MD5 rounds functions |
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function R(n,c){ return (n<<c)|(n>>>(32-c)); } |
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function C(q,a,b,x,s,t){ return base.addWords(R(base.addWords(base.addWords(a, q), base.addWords(x, t)), s), b); } |
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function FF(a,b,c,d,x,s,t){ return C((b&c)|((~b)&d),a,b,x,s,t); } |
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function GG(a,b,c,d,x,s,t){ return C((b&d)|(c&(~d)),a,b,x,s,t); } |
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function HH(a,b,c,d,x,s,t){ return C(b^c^d,a,b,x,s,t); } |
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function II(a,b,c,d,x,s,t){ return C(c^(b|(~d)),a,b,x,s,t); } |
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// the core MD5 rounds method |
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function core(x,len){ |
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x[len>>5]|=0x80<<((len)%32); |
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x[(((len+64)>>>9)<<4)+14]=len; |
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var a= 1732584193; |
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var b=-271733879; |
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var c=-1732584194; |
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var d= 271733878; |
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for(var i=0; i<x.length; i+=16){ |
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var olda=a; |
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var oldb=b; |
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var oldc=c; |
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var oldd=d; |
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a=FF(a,b,c,d,x[i+ 0],7 ,-680876936); |
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d=FF(d,a,b,c,x[i+ 1],12,-389564586); |
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c=FF(c,d,a,b,x[i+ 2],17, 606105819); |
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b=FF(b,c,d,a,x[i+ 3],22,-1044525330); |
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a=FF(a,b,c,d,x[i+ 4],7 ,-176418897); |
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d=FF(d,a,b,c,x[i+ 5],12, 1200080426); |
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c=FF(c,d,a,b,x[i+ 6],17,-1473231341); |
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b=FF(b,c,d,a,x[i+ 7],22,-45705983); |
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a=FF(a,b,c,d,x[i+ 8],7 , 1770035416); |
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d=FF(d,a,b,c,x[i+ 9],12,-1958414417); |
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c=FF(c,d,a,b,x[i+10],17,-42063); |
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b=FF(b,c,d,a,x[i+11],22,-1990404162); |
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a=FF(a,b,c,d,x[i+12],7 , 1804603682); |
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d=FF(d,a,b,c,x[i+13],12,-40341101); |
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c=FF(c,d,a,b,x[i+14],17,-1502002290); |
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b=FF(b,c,d,a,x[i+15],22, 1236535329); |
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a=GG(a,b,c,d,x[i+ 1],5 ,-165796510); |
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d=GG(d,a,b,c,x[i+ 6],9 ,-1069501632); |
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c=GG(c,d,a,b,x[i+11],14, 643717713); |
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b=GG(b,c,d,a,x[i+ 0],20,-373897302); |
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a=GG(a,b,c,d,x[i+ 5],5 ,-701558691); |
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d=GG(d,a,b,c,x[i+10],9 , 38016083); |
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c=GG(c,d,a,b,x[i+15],14,-660478335); |
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b=GG(b,c,d,a,x[i+ 4],20,-405537848); |
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a=GG(a,b,c,d,x[i+ 9],5 , 568446438); |
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d=GG(d,a,b,c,x[i+14],9 ,-1019803690); |
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c=GG(c,d,a,b,x[i+ 3],14,-187363961); |
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b=GG(b,c,d,a,x[i+ 8],20, 1163531501); |
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a=GG(a,b,c,d,x[i+13],5 ,-1444681467); |
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d=GG(d,a,b,c,x[i+ 2],9 ,-51403784); |
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c=GG(c,d,a,b,x[i+ 7],14, 1735328473); |
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b=GG(b,c,d,a,x[i+12],20,-1926607734); |
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a=HH(a,b,c,d,x[i+ 5],4 ,-378558); |
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d=HH(d,a,b,c,x[i+ 8],11,-2022574463); |
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c=HH(c,d,a,b,x[i+11],16, 1839030562); |
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b=HH(b,c,d,a,x[i+14],23,-35309556); |
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a=HH(a,b,c,d,x[i+ 1],4 ,-1530992060); |
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d=HH(d,a,b,c,x[i+ 4],11, 1272893353); |
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c=HH(c,d,a,b,x[i+ 7],16,-155497632); |
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b=HH(b,c,d,a,x[i+10],23,-1094730640); |
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a=HH(a,b,c,d,x[i+13],4 , 681279174); |
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d=HH(d,a,b,c,x[i+ 0],11,-358537222); |
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c=HH(c,d,a,b,x[i+ 3],16,-722521979); |
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b=HH(b,c,d,a,x[i+ 6],23, 76029189); |
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a=HH(a,b,c,d,x[i+ 9],4 ,-640364487); |
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d=HH(d,a,b,c,x[i+12],11,-421815835); |
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c=HH(c,d,a,b,x[i+15],16, 530742520); |
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b=HH(b,c,d,a,x[i+ 2],23,-995338651); |
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a=II(a,b,c,d,x[i+ 0],6 ,-198630844); |
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d=II(d,a,b,c,x[i+ 7],10, 1126891415); |
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c=II(c,d,a,b,x[i+14],15,-1416354905); |
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b=II(b,c,d,a,x[i+ 5],21,-57434055); |
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a=II(a,b,c,d,x[i+12],6 , 1700485571); |
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d=II(d,a,b,c,x[i+ 3],10,-1894986606); |
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c=II(c,d,a,b,x[i+10],15,-1051523); |
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b=II(b,c,d,a,x[i+ 1],21,-2054922799); |
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a=II(a,b,c,d,x[i+ 8],6 , 1873313359); |
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d=II(d,a,b,c,x[i+15],10,-30611744); |
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c=II(c,d,a,b,x[i+ 6],15,-1560198380); |
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b=II(b,c,d,a,x[i+13],21, 1309151649); |
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a=II(a,b,c,d,x[i+ 4],6 ,-145523070); |
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d=II(d,a,b,c,x[i+11],10,-1120210379); |
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c=II(c,d,a,b,x[i+ 2],15, 718787259); |
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b=II(b,c,d,a,x[i+ 9],21,-343485551); |
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a=base.addWords(a, olda); |
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b=base.addWords(b, oldb); |
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c=base.addWords(c, oldc); |
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d=base.addWords(d, oldd); |
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} |
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return [a,b,c,d]; |
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} |
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function hmac(data, key){ |
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var wa=base.stringToWord(key); |
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if(wa.length>16){ |
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wa=core(wa, key.length*chrsz); |
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} |
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var l=[], r=[]; |
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for(var i=0; i<16; i++){ |
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l[i]=wa[i]^0x36363636; |
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r[i]=wa[i]^0x5c5c5c5c; |
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} |
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var h=core(l.concat(base.stringToWord(data)), 512+data.length*chrsz); |
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return core(r.concat(h), 640); |
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} |
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// public function |
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base.MD5=function(/* string */data, /* dojox.encoding.digests.outputTypes? */outputType){ |
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// summary: |
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// computes the digest of data, and returns the result according to type outputType |
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var out=outputType || base.outputTypes.Base64; |
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var wa=core(base.stringToWord(data), data.length*chrsz); |
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switch(out){ |
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case base.outputTypes.Raw:{ |
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return wa; // word[] |
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} |
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case base.outputTypes.Hex:{ |
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return base.wordToHex(wa); // string |
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} |
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case base.outputTypes.String:{ |
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return base.wordToString(wa); // string |
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} |
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default:{ |
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return base.wordToBase64(wa); // string |
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} |
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} |
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}; |
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// make this private, for later use with a generic HMAC calculator. |
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base.MD5._hmac=function(/* string */data, /* string */key, /* dojox.encoding.digests.outputTypes? */outputType){ |
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// summary: |
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// computes the digest of data, and returns the result according to type outputType |
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var out=outputType || base.outputTypes.Base64; |
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var wa=hmac(data, key); |
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switch(out){ |
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case base.outputTypes.Raw:{ |
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return wa; // word[] |
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} |
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case base.outputTypes.Hex:{ |
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return base.wordToHex(wa); // string |
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} |
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case base.outputTypes.String:{ |
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return base.wordToString(wa); // string |
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} |
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default:{ |
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return base.wordToBase64(wa); // string |
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} |
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} |
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}; |
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return base.MD5; |
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});
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