Andrej Cimperšek - diploma

/*

        Copyright (c) 2004-2010, 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

*/

if(!dojo._hasResource["dojox.encoding.crypto.RSAKey"]){

dojo._hasResource["dojox.encoding.crypto.RSAKey"]=true;

dojo.provide("dojox.encoding.crypto.RSAKey");

dojo.experimental("dojox.encoding.crypto.RSAKey");

dojo.require("dojox.math.BigInteger");

dojo.require("dojox.math.random.Simple");

(function(){

var dm=dojox.math,_1=dm.BigInteger,_2=dm.random.Simple,_3=function(){

return new _2();

};

function _4(s,n,_5){

if(n<s.length+11){

throw new Error("Message too long for RSA");

}

var ba=new Array(n);

var i=s.length;

while(i&&n){

ba[--n]=s.charCodeAt(--i);

}

ba[--n]=0;

var _6=_5();

var x=[0];

while(n>2){

x[0]=0;

while(x[0]==0){

_6.nextBytes(x);

}

ba[--n]=x[0];

}

ba[--n]=2;

ba[--n]=0;

_6.destroy();

return new _1(ba);

};

dojo.declare("dojox.encoding.crypto.RSAKey",null,{constructor:function(_7){

this.rngf=_7||_3;

this.e=0;

this.n=this.d=this.p=this.q=this.dmp1=this.dmq1=this.coeff=null;

},setPublic:function(N,E){

if(N&&E&&N.length&&E.length){

this.n=new _1(N,16);

this.e=parseInt(E,16);

}else{

throw new Error("Invalid RSA public key");

}

},encrypt:function(_8){

var m=_4(_8,(this.n.bitLength()+7)>>3,this.rngf);

if(!m){

return null;

}

var c=m.modPowInt(this.e,this.n);

if(!c){

return null;

}

var h=c.toString(16);

return h.length%2?"0"+h:h;

}});

})();

}