password-manager/frontend/delta/js/Clipperz/Crypto/RSA.js
2015-03-09 15:45:35 +01:00

147 lines
3.8 KiB
JavaScript

/*
Copyright 2008-2015 Clipperz Srl
This file is part of Clipperz, the online password manager.
For further information about its features and functionalities please
refer to http://www.clipperz.com.
* Clipperz is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
* Clipperz is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public
License along with Clipperz. If not, see http://www.gnu.org/licenses/.
*/
try { if (typeof(Clipperz.Crypto.BigInt) == 'undefined') { throw ""; }} catch (e) {
throw "Clipperz.Crypto.RSA depends on Clipperz.Crypto.BigInt!";
}
if (typeof(Clipperz.Crypto.RSA) == 'undefined') { Clipperz.Crypto.RSA = {}; }
Clipperz.Crypto.RSA.VERSION = "0.1";
Clipperz.Crypto.RSA.NAME = "Clipperz.RSA";
//#############################################################################
MochiKit.Base.update(Clipperz.Crypto.RSA, {
//-------------------------------------------------------------------------
'publicKeyWithValues': function (e, d, n) {
var result;
result = {};
if (e.isBigInt) {
result.e = e;
} else {
result.e = new Clipperz.Crypto.BigInt(e, 16);
}
if (d.isBigInt) {
result.d = d;
} else {
result.d = new Clipperz.Crypto.BigInt(d, 16);
}
if (n.isBigInt) {
result.n = n;
} else {
result.n = new Clipperz.Crypto.BigInt(n, 16);
}
return result;
},
'privateKeyWithValues': function(e, d, n) {
return Clipperz.Crypto.RSA.publicKeyWithValues(e, d, n);
},
//-----------------------------------------------------------------------------
'encryptUsingPublicKey': function (aKey, aMessage) {
var messageValue;
var result;
messageValue = new Clipperz.Crypto.BigInt(aMessage, 16);
result = messageValue.powerModule(aKey.e, aKey.n);
return result.asString(16);
},
//.............................................................................
'decryptUsingPublicKey': function (aKey, aMessage) {
return Clipperz.Crypto.RSA.encryptUsingPublicKey(aKey, aMessage);
},
//-----------------------------------------------------------------------------
'encryptUsingPrivateKey': function (aKey, aMessage) {
var messageValue;
var result;
messageValue = new Clipperz.Crypto.BigInt(aMessage, 16);
result = messageValue.powerModule(aKey.d, aKey.n);
return result.asString(16);
},
//.............................................................................
'decryptUsingPrivateKey': function (aKey, aMessage) {
return Clipperz.Crypto.RSA.encryptUsingPrivateKey(aKey, aMessage);
},
//-----------------------------------------------------------------------------
'generatePublicKey': function(aNumberOfBits) {
var result;
var e;
var d;
var n;
e = new Clipperz.Crypto.BigInt("10001", 16);
{
var p, q;
var phi;
do {
p = Clipperz.Crypto.BigInt.randomPrime(aNumberOfBits);
} while (p.module(e).equals(1));
do {
q = Clipperz.Crypto.BigInt.randomPrime(aNumberOfBits);
} while ((q.equals(p)) || (q.module(e).equals(1)));
n = p.multiply(q);
phi = (p.subtract(1).multiply(q.subtract(1)));
d = e.powerModule(-1, phi);
}
result = Clipperz.Crypto.RSA.publicKeyWithValues(e, d, n);
return result;
},
//-------------------------------------------------------------------------
__syntaxFix__: "syntax fix"
//-------------------------------------------------------------------------
});
//#############################################################################