RSAKey.js
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RSAKey.js
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	/*
	Copyright (c) 2004-2009, 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;
	}});
	})();
	}