package org.bouncycastle.jce.provider.asymmetric.ec;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.bouncycastle.jce.provider.JCEECPrivateKey;
import org.bouncycastle.jce.provider.JCEECPublicKey;
import org.bouncycastle.jce.provider.JDKKeyFactory;
import org.bouncycastle.jce.provider.ProviderUtil;
import org.bouncycastle.jce.spec.ECPrivateKeySpec;
import org.bouncycastle.jce.spec.ECPublicKeySpec;
import org.bouncycastle.jce.spec.ECParameterSpec;
public class KeyFactory
extends JDKKeyFactory
{
String algorithm;
KeyFactory(
String algorithm)
{
this.algorithm = algorithm;
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof ECPublicKey)
{
return new JCEECPublicKey((ECPublicKey)key);
}
else if (key instanceof ECPrivateKey)
{
return new JCEECPrivateKey((ECPrivateKey)key);
}
throw new InvalidKeyException("key type unknown");
}
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(java.security.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey)
{
ECPublicKey k = (ECPublicKey)key;
if (k.getParams() != null)
{
return new java.security.spec.ECPublicKeySpec(k.getW(), k.getParams());
}
else
{
ECParameterSpec implicitSpec = ProviderUtil.getEcImplicitlyCa();
return new java.security.spec.ECPublicKeySpec(k.getW(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
}
}
else if (spec.isAssignableFrom(java.security.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey)
{
ECPrivateKey k = (ECPrivateKey)key;
if (k.getParams() != null)
{
return new java.security.spec.ECPrivateKeySpec(k.getS(), k.getParams());
}
else
{
ECParameterSpec implicitSpec = ProviderUtil.getEcImplicitlyCa();
return new java.security.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
}
}
throw new RuntimeException("not implemented yet " + key + " " + spec);
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof PKCS8EncodedKeySpec)
{
try
{
JCEECPrivateKey key = (JCEECPrivateKey)JDKKeyFactory.createPrivateKeyFromDERStream(
((PKCS8EncodedKeySpec)keySpec).getEncoded());
return new JCEECPrivateKey(algorithm, key);
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
else if (keySpec instanceof ECPrivateKeySpec)
{
return new JCEECPrivateKey(algorithm, (ECPrivateKeySpec)keySpec);
}
else if (keySpec instanceof java.security.spec.ECPrivateKeySpec)
{
return new JCEECPrivateKey(algorithm, (java.security.spec.ECPrivateKeySpec)keySpec);
}
throw new InvalidKeySpecException("Unknown KeySpec type: " + keySpec.getClass().getName());
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof X509EncodedKeySpec)
{
try
{
JCEECPublicKey key = (JCEECPublicKey)JDKKeyFactory.createPublicKeyFromDERStream(
((X509EncodedKeySpec)keySpec).getEncoded());
return new JCEECPublicKey(algorithm, key);
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
else if (keySpec instanceof ECPublicKeySpec)
{
return new JCEECPublicKey(algorithm, (ECPublicKeySpec)keySpec);
}
else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
{
return new JCEECPublicKey(algorithm, (java.security.spec.ECPublicKeySpec)keySpec);
}
throw new InvalidKeySpecException("Unknown KeySpec type: " + keySpec.getClass().getName());
}
public static class EC
extends KeyFactory
{
public EC()
{
super("EC");
}
}
public static class ECDSA
extends KeyFactory
{
public ECDSA()
{
super("ECDSA");
}
}
public static class ECGOST3410
extends KeyFactory
{
public ECGOST3410()
{
super("ECGOST3410");
}
}
public static class ECDH
extends KeyFactory
{
public ECDH()
{
super("ECDH");
}
}
public static class ECDHC
extends KeyFactory
{
public ECDHC()
{
super("ECDHC");
}
}
public static class ECMQV
extends KeyFactory
{
public ECMQV()
{
super("ECMQV");
}
}
}