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package org.spongycastle.jcajce.provider.asymmetric.x509;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.KeyFactorySpi;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
import org.spongycastle.jce.provider.BouncyCastleProvider;
public class KeyFactory
extends KeyFactorySpi
{
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof PKCS8EncodedKeySpec)
{
try
{
PrivateKeyInfo info = PrivateKeyInfo.getInstance(((PKCS8EncodedKeySpec)keySpec).getEncoded());
PrivateKey key = BouncyCastleProvider.getPrivateKey(info);
if (key != null)
{
return key;
}
throw new InvalidKeySpecException("no factory found for OID: " + info.getPrivateKeyAlgorithm().getAlgorithm());
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
throw new InvalidKeySpecException("Unknown KeySpec type: " + keySpec.getClass().getName());
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof X509EncodedKeySpec)
{
try
{
SubjectPublicKeyInfo info = SubjectPublicKeyInfo.getInstance(((X509EncodedKeySpec)keySpec).getEncoded());
PublicKey key = BouncyCastleProvider.getPublicKey(info);
if (key != null)
{
return key;
}
throw new InvalidKeySpecException("no factory found for OID: " + info.getAlgorithm().getAlgorithm());
}
catch (Exception e)
{
throw new InvalidKeySpecException(e.toString());
}
}
throw new InvalidKeySpecException("Unknown KeySpec type: " + keySpec.getClass().getName());
}
protected KeySpec engineGetKeySpec(Key key, Class keySpec)
throws InvalidKeySpecException
{
if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class) && key.getFormat().equals("PKCS#8"))
{
return new PKCS8EncodedKeySpec(key.getEncoded());
}
else if (keySpec.isAssignableFrom(X509EncodedKeySpec.class) && key.getFormat().equals("X.509"))
{
return new X509EncodedKeySpec(key.getEncoded());
}
throw new InvalidKeySpecException("not implemented yet " + key + " " + keySpec);
}
protected Key engineTranslateKey(Key key)
throws InvalidKeyException
{
throw new InvalidKeyException("not implemented yet " + key);
}
}
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