/*
* Copyright (c) 2010-2011 Michael Laudati, N1 Concepts LLC.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The names of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL N1
* CONCEPTS, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.vngx.jsch.algorithm;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.interfaces.RSAPublicKey;
/**
* Implementation of <code>KeyPairGenRSA</code> for generating key pairs using
* RSA encryption.
*
* @author Michael Laudati
*/
public final class KeyPairGenRSAImpl implements KeyPairGenRSA {
/** Private key value. */
private byte[] _d;
/** Public key value. */
private byte[] _e;
/** Modulus 'n' calculated from (p * q). */
private byte[] _n;
/** Coefficient value. */
private byte[] _c;
/** Exponent of p value. */
private byte[] _ep;
/** Exponent of q value. */
private byte[] _eq;
/** Prime number p. */
private byte[] _p;
/** Prime number q. */
private byte[] _q;
@Override
public void init(int keySize) throws Exception {
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(keySize, new SecureRandom());
KeyPair pair = keyGen.generateKeyPair();
RSAPublicKey pubKey = (RSAPublicKey) pair.getPublic();
RSAPrivateCrtKey prvKey = (RSAPrivateCrtKey) pair.getPrivate();
_d = prvKey.getPrivateExponent().toByteArray();
_e = pubKey.getPublicExponent().toByteArray();
_n = prvKey.getModulus().toByteArray();
_c = prvKey.getCrtCoefficient().toByteArray();
_ep = prvKey.getPrimeExponentP().toByteArray();
_eq = prvKey.getPrimeExponentQ().toByteArray();
_p = prvKey.getPrimeP().toByteArray();
_q = prvKey.getPrimeQ().toByteArray();
}
@Override
public byte[] getD() {
return _d;
}
@Override
public byte[] getE() {
return _e;
}
@Override
public byte[] getN() {
return _n;
}
@Override
public byte[] getC() {
return _c;
}
@Override
public byte[] getEP() {
return _ep;
}
@Override
public byte[] getEQ() {
return _eq;
}
@Override
public byte[] getP() {
return _p;
}
@Override
public byte[] getQ() {
return _q;
}
}