/*
* Created on 08-Jun-2004
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.bouncycastle.jce.provider;
/**
* @author parg
*
*/
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.KeyFactorySpi;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.RSAPrivateCrtKeySpec;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;
import java.security.spec.X509EncodedKeySpec;
import javax.crypto.interfaces.DHPrivateKey;
import javax.crypto.interfaces.DHPublicKey;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERInputStream;
import org.bouncycastle.asn1.x509.*;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.jce.interfaces.ElGamalPrivateKey;
import org.bouncycastle.jce.interfaces.ElGamalPublicKey;
import org.bouncycastle.jce.spec.ECPrivateKeySpec;
import org.bouncycastle.jce.spec.ECPublicKeySpec;
public abstract class
JDKKeyFactory
extends KeyFactorySpi
{
protected KeySpec engineGetKeySpec(
Key key,
Class spec)
throws InvalidKeySpecException
{
if (spec.isAssignableFrom(PKCS8EncodedKeySpec.class) && key.getFormat().equals("PKCS#8"))
{
return new PKCS8EncodedKeySpec(key.getEncoded());
}
else if (spec.isAssignableFrom(X509EncodedKeySpec.class) && key.getFormat().equals("X.509"))
{
return new X509EncodedKeySpec(key.getEncoded());
}
else if (spec.isAssignableFrom(RSAPublicKeySpec.class) && key instanceof RSAPublicKey)
{
RSAPublicKey k = (RSAPublicKey)key;
return new RSAPublicKeySpec(k.getModulus(), k.getPublicExponent());
}
else if (spec.isAssignableFrom(RSAPrivateKeySpec.class) && key instanceof RSAPrivateKey)
{
RSAPrivateKey k = (RSAPrivateKey)key;
return new RSAPrivateKeySpec(k.getModulus(), k.getPrivateExponent());
}
else if (spec.isAssignableFrom(RSAPrivateCrtKeySpec.class) && key instanceof RSAPrivateCrtKey)
{
RSAPrivateCrtKey k = (RSAPrivateCrtKey)key;
return new RSAPrivateCrtKeySpec(
k.getModulus(), k.getPublicExponent(),
k.getPrivateExponent(),
k.getPrimeP(), k.getPrimeQ(),
k.getPrimeExponentP(), k.getPrimeExponentQ(),
k.getCrtCoefficient());
}
throw new RuntimeException("not implemented yet " + key + " " + spec);
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof RSAPublicKey)
{
return new JCERSAPublicKey((RSAPublicKey)key);
}
else if (key instanceof RSAPrivateCrtKey)
{
//return new JCERSAPrivateCrtKey((RSAPrivateCrtKey)key);
}
else if (key instanceof RSAPrivateKey)
{
//return new JCERSAPrivateKey((RSAPrivateKey)key);
}
else if (key instanceof DHPublicKey)
{
//return new JCEDHPublicKey((DHPublicKey)key);
}
else if (key instanceof DHPrivateKey)
{
//return new JCEDHPrivateKey((DHPrivateKey)key);
}
else if (key instanceof DSAPublicKey)
{
//return new JDKDSAPublicKey((DSAPublicKey)key);
}
else if (key instanceof DSAPrivateKey)
{
//return new JDKDSAPrivateKey((DSAPrivateKey)key);
}
else if (key instanceof ElGamalPublicKey)
{
//return new JCEElGamalPublicKey((ElGamalPublicKey)key);
}
else if (key instanceof ElGamalPrivateKey)
{
//return new JCEElGamalPrivateKey((ElGamalPrivateKey)key);
}
throw new InvalidKeyException("key type unknown");
}
static PublicKey createPublicKeyFromDERStream(
InputStream in)
throws IOException
{
return createPublicKeyFromPublicKeyInfo(
new SubjectPublicKeyInfo((ASN1Sequence)(new DERInputStream(in).readObject())));
}
static PublicKey createPublicKeyFromPublicKeyInfo(
SubjectPublicKeyInfo info)
{
AlgorithmIdentifier algId = info.getAlgorithmId();
if (algId.getObjectId().equals(PKCSObjectIdentifiers.rsaEncryption)
|| algId.getObjectId().equals(X509ObjectIdentifiers.id_ea_rsa))
{
return new JCERSAPublicKey(info);
}
else if (algId.getObjectId().equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new JCEECPublicKey(info);
}
else
{
throw new RuntimeException("algorithm identifier in key not recognised");
}
}
static PrivateKey createPrivateKeyFromDERStream(
InputStream in)
throws IOException
{
return createPrivateKeyFromPrivateKeyInfo(
new PrivateKeyInfo((ASN1Sequence)(new DERInputStream(in).readObject())));
}
/**
* create a private key from the given public key info object.
*/
static PrivateKey createPrivateKeyFromPrivateKeyInfo(
PrivateKeyInfo info)
{
AlgorithmIdentifier algId = info.getAlgorithmId();
/*
if (algId.getObjectId().equals(PKCSObjectIdentifiers.rsaEncryption))
{
return new JCERSAPrivateCrtKey(info);
}
else if (algId.getObjectId().equals(PKCSObjectIdentifiers.dhKeyAgreement))
{
return new JCEDHPrivateKey(info);
}
else if (algId.getObjectId().equals(OIWObjectIdentifiers.elGamalAlgorithm))
{
return new JCEElGamalPrivateKey(info);
}
else if (algId.getObjectId().equals(X9ObjectIdentifiers.id_dsa))
{
return new JDKDSAPrivateKey(info);
}
else */
if (algId.getObjectId().equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new JCEECPrivateKey(info);
}
else
{
throw new RuntimeException("algorithm identifier in key not recognised");
}
}
public static class EC
extends JDKKeyFactory
{
String algorithm;
public EC()
{
this("EC");
}
public EC(
String algorithm)
{
this.algorithm = algorithm;
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof PKCS8EncodedKeySpec)
{
try
{
return JDKKeyFactory.createPrivateKeyFromDERStream(
new ByteArrayInputStream(((PKCS8EncodedKeySpec)keySpec).getEncoded()));
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
else if (keySpec instanceof ECPrivateKeySpec)
{
return new JCEECPrivateKey(algorithm, (ECPrivateKeySpec)keySpec);
}
throw new InvalidKeySpecException("Unknown KeySpec type.");
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof X509EncodedKeySpec)
{
try
{
return JDKKeyFactory.createPublicKeyFromDERStream(
new ByteArrayInputStream(((X509EncodedKeySpec)keySpec).getEncoded()));
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
else if (keySpec instanceof ECPublicKeySpec)
{
return new JCEECPublicKey(algorithm, (ECPublicKeySpec)keySpec);
}
throw new InvalidKeySpecException("Unknown KeySpec type.");
}
}
public static class ECDSA
extends EC
{
public ECDSA()
{
super("ECDSA");
}
}
}
|
