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RSA.init3.js
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/*
* RSA.init3.js
* An implementation of RSA public-key cryptography
* Methods for Asynchronous processing.
*
* See RSA.readme.txt for further information.
*
*
* ACKNOWLEDGMENT
*
* This library is originally written by Tom Wu
*
* Copyright (c) 2005 Tom Wu
* All Rights Reserved.
* http://www-cs-students.stanford.edu/~tjw/jsbn/
*
* MODIFICATION
*
* Some modifications are applied by Atsushi Oka
*
* Atsushi Oka
* http://oka.nu/
*
* - Packaged
* - Added Object-Oriented Interface.
* - Added Asynchronous Execution Feauture.
*/
function initRSA3( packages ) {
__unit( "RSA.init3.js" );
__uses( "packages.js" );
__uses( "SecureRandom.js" );
__uses( "BigInteger.init1.js" );
__uses( "BigInteger.init2.js" );
__uses( "nonstructured.js" ); // See ... (1)
__uses( "BigInteger.init3.js" );
__uses( "RSA.init1.js" );
__uses( "RSA.init2.js" );
// (1) nonstructured.js
// This file relies on nonstructured.js
// See http://oka.nu/lib/nonstructured/nonstructured.readme.txt
///////////////////////////////////////////
// import
///////////////////////////////////////////
// var RSA = __package( packages, id ).RSA;
// var BigInteger = __package( packages, id ).BigInteger;
// var SecureRandom = __package( packages, id ).SecureRandom;
var RSA = __import( packages, "titaniumcore.crypto.RSA" );
var BigInteger = __import( packages, "titaniumcore.crypto.BigInteger" );
var SecureRandom = __import( packages, "titaniumcore.crypto.SecureRandom" );
///////////////////////////////////////////
// implementation
///////////////////////////////////////////
RSA.prototype.generateAsync = function(keylen,exp,progress,result,done) {
var self=this;
var generator = this.stepping_generate( keylen, exp );
var _result = function() {
result( self );
return BREAK;
};
return ( [ generator, _result, EXIT ] ).ready().frequency(1).timeout(1).progress(progress).done(done).go();
};
RSA.prototype.processPublicAsync = function(message,progress,result,done){
var closure= this.stepping_processPublic(message);
var receiver = function(scope,param,subparam) {
result( subparam.result.toByteArray() );
return BREAK;
};
return ( [ closure, receiver, EXIT ] ).ready().frequency(1).timeout(1).progress(progress).done(done).go();
};
RSA.prototype.processPrivateAsync = function(message,progress,result,done){
var closure= this.stepping_processPrivate(message);
var receiver = function(scope,param,subparam) {
result( subparam.result.toByteArray() );
return BREAK;
};
return ( [ closure, receiver, EXIT ] ).ready().frequency(1).timeout(1).progress(progress).done(done).go();
};
RSA.prototype.privateEncryptAsync = function(message,progress,result,done) {
if ( this.messageFormat==null ) {
throw "Error. No message format is installed.";
}
return this.messageFormat.privateEncryptAsync( this, message,progress,result,done );
};
RSA.prototype.privateDecryptAsync = function(message,progress,result, done) {
if ( this.messageFormat==null ) {
throw "Error. No message format is installed.";
}
return this.messageFormat.privateDecryptAsync( this, message,progress,result,done );
};
///////////////////////////////////////////
// implementation
///////////////////////////////////////////
// Generate a new random private key B bits long, using public expt E
RSA.prototype.stepping_generate = function (B,E) {
var self=this;
//var rng = new SecureRandom(); // MODIFIED 2008/12/07
var rng;
// var qs = B>>1;
var qs = this.splitBitLength( B );
// Modified Jan 4,2009
// self.e = parseInt(E,16);
// var ee = new BigInteger(E,16);
// Modified Jan 5,2009
//if ( typeof E == "string" ) {
// self.e = parseInt(E,16);
//} else if ( typeof E == "number" ) {
// self.e = e;
//} else {
// throw "E must be a number object or a hex string. ";
//}
self._e(E);
var ee = new BigInteger(self.e);
var p1;
var q1;
var phi;
var et1 = ElapsedTime.create();
var et2 = ElapsedTime.create();
var et3 = ElapsedTime.create();
return [
function() {
RSA.log("RSAEngine:0.0");
et1.start("Step1");
return BREAK;
},
// // Step1.ver1
// function () {
//// self.p = new BigInteger( B-qs, 1, rng );
// self.p = new BigInteger( qs[0], 1, rng );
// if ( self.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && self.p.isProbablePrime(10) )
// return BREAK;
// return CONTINUE;
// },
// Step1.ver2
[
function () {
RSA.log("RSAEngine:1.1");
self.p = new BigInteger();
rng = new SecureRandom();
return BREAK;
},
function () {
RSA.log("RSAEngine:1.2");
// return self.p.stepping_fromNumber1( B-qs, 1, rng ).BREAK();
return self.p.stepping_fromNumber1( qs[0], 1, rng ).BREAK();
},
// // Step1.3 ver1
// function () {
// RSA.log("RSAEngine:1.3");
// if ( self.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && self.p.isProbablePrime(10) )
// return EXIT;
// else
// return AGAIN;
// }
// // Step1.3 ver2
// function () {
// RSA.log("RSAEngine:1.3.1");
// if ( self.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 )
// return BREAK;
// else
// return AGAIN;
// },
// function () {
// RSA.log("RSAEngine:1.3.2");
// if ( self.p.isProbablePrime(10) ) {
// RSA.log("RSAEngine:1.3.2=>EXIT");
// return EXIT;
// } else {
// RSA.log("RSAEngine:1.3.2=>AGAIN");
// return AGAIN;
// }
// },
// Step1.3 ver3
function () {
RSA.log("RSAEngine:1.3.1");
if ( self.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 )
return BREAK;
else
return AGAIN;
},
function () {
RSA.log("RSAEngine:1.3.2 : calling stepping_isProbablePrime");
return self.p.stepping_isProbablePrime(10).BREAK();
},
function (scope,param,subparam) {
RSA.log("RSAEngine:1.3.3 : returned stepping_isProbablePrime" + subparam.result );
if ( subparam.result ) {
RSA.log("RSAEngine:1.3.3=>EXIT");
return EXIT;
} else {
RSA.log("RSAEngine:1.3.3=>AGAIN");
return AGAIN;
}
},
EXIT
].NAME("stepping_generate.Step1"),
function() {
et1.stop();
RSA.log("RSAEngine:1.4");
return BREAK;
},
function() {
RSA.log("RSAEngine:2.0");
et2.start("Step2");
return BREAK;
},
// // Step2.ver1
// function() {
//// self.q = new BigInteger( qs, 1, rng );
// self.q = new BigInteger( qs[1], 1, rng );
// if ( self.q.subtract( BigInteger.ONE ).gcd( ee ).compareTo( BigInteger.ONE ) == 0 && self.q.isProbablePrime(10) )
// return BREAK;
// return CONTINUE;
// },
// Step2.ver2
[
function() {
RSA.log("RSAEngine:2.1");
self.q = new BigInteger();
return BREAK;
},
function () {
RSA.log("RSAEngine:2.2");
// return self.q.stepping_fromNumber1( qs, 1, rng ).BREAK();
return self.q.stepping_fromNumber1( qs[1], 1, rng ).BREAK();
},
// // Step2.3 ver1 >>
// function () {
// RSA.log("RSAEngine:2.3");
// if ( self.q.subtract( BigInteger.ONE ).gcd( ee ).compareTo( BigInteger.ONE ) == 0 && self.q.isProbablePrime(10) )
// return EXIT;
// else
// return AGAIN;
// }
// <<
// // Step2.3 ver2>>>
// function () {
// RSA.log("RSAEngine:2.3.1");
// if ( self.q.subtract( BigInteger.ONE ).gcd( ee ).compareTo( BigInteger.ONE ) == 0 )
// return BREAK;
// else
// return AGAIN;
// },
// function () {
// RSA.log("RSAEngine:2.3.2");
// if ( self.q.isProbablePrime(10) ) {
// RSA.log("RSAEngine:2.3.2=>EXIT");
// return EXIT;
// } else {
// RSA.log("RSAEngine:2.3.2=>AGAIN");
// return AGAIN;
// }
// },
//<<<
// Step2.3 ver2>>>
function () {
RSA.log("RSAEngine:2.3.1");
if ( self.q.subtract( BigInteger.ONE ).gcd( ee ).compareTo( BigInteger.ONE ) == 0 )
return BREAK;
else
return AGAIN;
},
function() {
RSA.log("RSAEngine:2.3.2");
return self.q.stepping_isProbablePrime(10).BREAK();
},
function(scope,param,subparam) {
RSA.log( "RSAEngine:2.3.3:subparam.result="+subparam.result );
if ( subparam.result ) {
RSA.log("RSAEngine:2.3.3=>EXIT");
return EXIT;
} else {
RSA.log("RSAEngine:2.3.3=>AGAIN");
return AGAIN;
}
},
// <<<
EXIT
].NAME("stepping_generate.Step2"),
function() {
et2.stop();
RSA.log("RSAEngine:2.3");
return BREAK;
},
function() {
if ( self.p.compareTo(self.q) <= 0 ) {
var t = self.p;
self.p = self.q;
self.q = t;
}
return BREAK;
},
function() {
RSA.log("RSAEngine:3.1");
RSA.log( "p=" + self.p.toString(16) );
RSA.log( "q=" + self.q.toString(16) );
et3.start("Step3");
return BREAK;
},
// //Step3.2 ver1
// function() {
// RSA.log("RSAEngine:3.2");
// var p1 = self.p.subtract( BigInteger.ONE );
// var q1 = self.q.subtract( BigInteger.ONE );
// var phi = p1.multiply( q1 );
// RSA.log("RSAEngine:3.3");
// if ( phi.gcd(ee).compareTo( BigInteger.ONE ) == 0 ) {
// RSA.log("RSAEngine:3.3.1");
// self.n = self.p.multiply( self.q );
// // ADDED 2008/12/1 >>>
// if ( self.n.bitLength() != B ) {
// RSA.log("RSAEngine:3.3.2.1:AGAIN bitLength="+self.n.bitLength() + " B=" + B );
// return AGAIN;
// }
// RSA.log("RSAEngine:3.3.2.2");
// // ADDED 2008/12/1 <<<
// var et4 =ElapsedTime.create();
// et4.start("modInverse1");
// self.d = ee.modInverse( phi );
// et4.stop();
// et4.start("modInverse2");
// self.dmp1 = self.d.mod(p1);
// self.dmq1 = self.d.mod(q1);
// et4.stop();
// et4.start("modInverse3");
// self.coeff = self.q.modInverse(self.p);
// et4.stop();
// return BREAK;
// }
// RSA.log("RSAEngine:3.4");
// return AGAIN;
// },
// // Step3.2 ver2 >>>
function() {
RSA.log("RSAEngine:3.2");
/* var */ p1 = self.p.subtract( BigInteger.ONE );
/* var */ q1 = self.q.subtract( BigInteger.ONE );
/* var */ phi = p1.multiply( q1 );
if ( phi.gcd(ee).compareTo( BigInteger.ONE ) == 0 ) {
RSA.log("RSAEngine:3.2=>BREAK");
return BREAK;
} else {
RSA.log("RSAEngine:3.2=>AGAIN");
return AGAIN;
}
},
function() {
RSA.log("RSAEngine:3.2.sub");
// ADDED 11Dec,2008 Ats >>>
// When p and q in a RSA key have the same value, the RSA
// key cannot encrypt/decrypt messages correctly.
// Check if they have the same value and if so regenerate these value again.
// Though rarely do p and q conflict when key length is large enough.
// <<<
if ( self.p.compareTo( self.q ) ==0 ) {
RSA.log("RSAEngine:3.2.sub +++ P & Q ARE EQUAL !!!");
return AGAIN;
}
self.n = self.p.multiply( self.q );
// ADDED 2008/12/1 >>>
// if ( self.n.bitLength() != B ) {
// if ( self.n.bitLength() < B ) { // modified 2009/1/13
if ( ! self.isProperBitLength( self.n, B ) ) { // modified 2009/1/15
RSA.log("RSAEngine:3.3.2.1:AGAIN bitLength="+self.n.bitLength() + " B=" + B );
return AGAIN;
}
// ADDED 2008/12/1 <<<
return BREAK;
},
function() {
RSA.log("RSAEngine:3.3.1");
var et4 =ElapsedTime.create();
RSA.log("RSAEngine:3.3.1(1)");
et4.start("modInverse1");
self.d = ee.modInverse( phi );
et4.stop();
RSA.log("RSAEngine:3.3.2(2)");
self._ksize(B); // added Jan15,2009
return BREAK;
},
function() {
RSA.log("RSAEngine:3.3.2");
var et4 =ElapsedTime.create();
et4.start("modInverse2");
self.dmp1 = self.d.mod(p1);
self.dmq1 = self.d.mod(q1);
et4.stop();
return BREAK;
},
function() {
RSA.log("RSAEngine:3.3.3");
var et4 =ElapsedTime.create();
et4.start("modInverse3");
self.coeff = self.q.modInverse(self.p);
et4.stop();
return BREAK;
},
function() {
et3.stop();
RSA.log("RSAEngine:3.5");
return BREAK;
},
// <<<
EXIT
].NAME("stepping_generate");
};
///////////////////////////////////////////
RSA.prototype.stepping_processPublic = function(m){
return m.stepping_modPow( new BigInteger(this.e), this.n);
};
RSA.prototype.stepping_processPrivate = function(m){
return m.stepping_modPow( this.d, this.n );
};
};
initRSA3( this );
// vim:ts=8 sw=4:noexpandtab: