/**
*
* Copyright 2003-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geronimo.util.jce.provider;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.spec.RSAPrivateCrtKeySpec;
import org.apache.geronimo.util.asn1.ASN1Sequence;
import org.apache.geronimo.util.asn1.DERNull;
import org.apache.geronimo.util.asn1.DEROutputStream;
import org.apache.geronimo.util.asn1.pkcs.PKCSObjectIdentifiers;
import org.apache.geronimo.util.asn1.pkcs.PrivateKeyInfo;
import org.apache.geronimo.util.asn1.pkcs.RSAPrivateKeyStructure;
import org.apache.geronimo.util.asn1.x509.AlgorithmIdentifier;
import org.apache.geronimo.util.crypto.params.RSAPrivateCrtKeyParameters;
/**
* A provider representation for a RSA private key, with CRT factors included.
*/
public class JCERSAPrivateCrtKey
extends JCERSAPrivateKey
implements RSAPrivateCrtKey
{
private BigInteger publicExponent;
private BigInteger primeP;
private BigInteger primeQ;
private BigInteger primeExponentP;
private BigInteger primeExponentQ;
private BigInteger crtCoefficient;
/**
* construct a private key from it's org.apache.geronimo.util.crypto equivalent.
*
* @param key the parameters object representing the private key.
*/
JCERSAPrivateCrtKey(
RSAPrivateCrtKeyParameters key)
{
super(key);
this.publicExponent = key.getPublicExponent();
this.primeP = key.getP();
this.primeQ = key.getQ();
this.primeExponentP = key.getDP();
this.primeExponentQ = key.getDQ();
this.crtCoefficient = key.getQInv();
}
/**
* construct a private key from an RSAPrivateCrtKeySpec
*
* @param spec the spec to be used in construction.
*/
JCERSAPrivateCrtKey(
RSAPrivateCrtKeySpec spec)
{
this.modulus = spec.getModulus();
this.publicExponent = spec.getPublicExponent();
this.privateExponent = spec.getPrivateExponent();
this.primeP = spec.getPrimeP();
this.primeQ = spec.getPrimeQ();
this.primeExponentP = spec.getPrimeExponentP();
this.primeExponentQ = spec.getPrimeExponentQ();
this.crtCoefficient = spec.getCrtCoefficient();
}
/**
* construct a private key from another RSAPrivateCrtKey.
*
* @param key the object implementing the RSAPrivateCrtKey interface.
*/
JCERSAPrivateCrtKey(
RSAPrivateCrtKey key)
{
this.modulus = key.getModulus();
this.publicExponent = key.getPublicExponent();
this.privateExponent = key.getPrivateExponent();
this.primeP = key.getPrimeP();
this.primeQ = key.getPrimeQ();
this.primeExponentP = key.getPrimeExponentP();
this.primeExponentQ = key.getPrimeExponentQ();
this.crtCoefficient = key.getCrtCoefficient();
}
/**
* construct an RSA key from a private key info object.
*/
JCERSAPrivateCrtKey(
PrivateKeyInfo info)
{
this(new RSAPrivateKeyStructure((ASN1Sequence)info.getPrivateKey()));
}
/**
* construct an RSA key from a ASN.1 RSA private key object.
*/
JCERSAPrivateCrtKey(
RSAPrivateKeyStructure key)
{
this.modulus = key.getModulus();
this.publicExponent = key.getPublicExponent();
this.privateExponent = key.getPrivateExponent();
this.primeP = key.getPrime1();
this.primeQ = key.getPrime2();
this.primeExponentP = key.getExponent1();
this.primeExponentQ = key.getExponent2();
this.crtCoefficient = key.getCoefficient();
}
/**
* return the encoding format we produce in getEncoded().
*
* @return the encoding format we produce in getEncoded().
*/
public String getFormat()
{
return "PKCS#8";
}
/**
* Return a PKCS8 representation of the key. The sequence returned
* represents a full PrivateKeyInfo object.
*
* @return a PKCS8 representation of the key.
*/
public byte[] getEncoded()
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DEROutputStream dOut = new DEROutputStream(bOut);
PrivateKeyInfo info = new PrivateKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, new DERNull()), new RSAPrivateKeyStructure(getModulus(), getPublicExponent(), getPrivateExponent(), getPrimeP(), getPrimeQ(), getPrimeExponentP(), getPrimeExponentQ(), getCrtCoefficient()).getDERObject());
try
{
dOut.writeObject(info);
dOut.close();
}
catch (IOException e)
{
throw new RuntimeException("Error encoding RSA public key");
}
return bOut.toByteArray();
}
/**
* return the public exponent.
*
* @return the public exponent.
*/
public BigInteger getPublicExponent()
{
return publicExponent;
}
/**
* return the prime P.
*
* @return the prime P.
*/
public BigInteger getPrimeP()
{
return primeP;
}
/**
* return the prime Q.
*
* @return the prime Q.
*/
public BigInteger getPrimeQ()
{
return primeQ;
}
/**
* return the prime exponent for P.
*
* @return the prime exponent for P.
*/
public BigInteger getPrimeExponentP()
{
return primeExponentP;
}
/**
* return the prime exponent for Q.
*
* @return the prime exponent for Q.
*/
public BigInteger getPrimeExponentQ()
{
return primeExponentQ;
}
/**
* return the CRT coefficient.
*
* @return the CRT coefficient.
*/
public BigInteger getCrtCoefficient()
{
return crtCoefficient;
}
public boolean equals(Object o)
{
if ( !(o instanceof RSAPrivateCrtKey) )
{
return false;
}
if ( o == this )
{
return true;
}
RSAPrivateCrtKey key = (RSAPrivateCrtKey)o;
return this.getModulus().equals(key.getModulus())
&& this.getPublicExponent().equals(key.getPublicExponent())
&& this.getPrivateExponent().equals(key.getPrivateExponent())
&& this.getPrimeP().equals(key.getPrimeP())
&& this.getPrimeQ().equals(key.getPrimeQ())
&& this.getPrimeExponentP().equals(key.getPrimeExponentP())
&& this.getPrimeExponentQ().equals(key.getPrimeExponentQ())
&& this.getCrtCoefficient().equals(key.getCrtCoefficient());
}
public String toString()
{
StringBuffer buf = new StringBuffer();
String nl = System.getProperty("line.separator");
buf.append("RSA Private CRT Key" + nl);
buf.append(" modulus: " + this.getModulus().toString(16) + nl);
buf.append(" public exponent: " + this.getPublicExponent().toString(16) + nl);
buf.append(" private exponent: " + this.getPrivateExponent().toString(16) + nl);
buf.append(" primeP: " + this.getPrimeP().toString(16) + nl);
buf.append(" primeQ: " + this.getPrimeQ().toString(16) + nl);
buf.append(" primeExponentP: " + this.getPrimeExponentP().toString(16) + nl);
buf.append(" primeExponentQ: " + this.getPrimeExponentQ().toString(16) + nl);
buf.append(" crtCoefficient: " + this.getCrtCoefficient().toString(16) + nl);
return buf.toString();
}
}