package org.bouncycastle.jcajce.provider.asymmetric.ec;
import java.io.IOException;
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 org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi;
import org.bouncycastle.jcajce.provider.asymmetric.util.EC5Util;
import org.bouncycastle.jcajce.provider.config.ProviderConfiguration;
import org.bouncycastle.jcajce.provider.util.AsymmetricKeyInfoConverter;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.jce.spec.ECParameterSpec;
import org.bouncycastle.jce.spec.ECPrivateKeySpec;
import org.bouncycastle.jce.spec.ECPublicKeySpec;
public class KeyFactorySpi
extends BaseKeyFactorySpi
implements AsymmetricKeyInfoConverter
{
String algorithm;
ProviderConfiguration configuration;
KeyFactorySpi(
String algorithm,
ProviderConfiguration configuration)
{
this.algorithm = algorithm;
this.configuration = configuration;
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof ECPublicKey)
{
return new BCECPublicKey((ECPublicKey)key, configuration);
}
else if (key instanceof ECPrivateKey)
{
return new BCECPrivateKey((ECPrivateKey)key, configuration);
}
throw new InvalidKeyException("key type unknown");
}
protected KeySpec engineGetKeySpec(
Key key,
Class spec)
throws InvalidKeySpecException
{
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 = BouncyCastleProvider.CONFIGURATION.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 = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new java.security.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey)
{
ECPublicKey k = (ECPublicKey)key;
if (k.getParams() != null)
{
return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), EC5Util.convertSpec(k.getParams(), false));
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), implicitSpec);
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey)
{
ECPrivateKey k = (ECPrivateKey)key;
if (k.getParams() != null)
{
return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(k.getParams(), false));
}
else
{
ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), implicitSpec);
}
}
return super.engineGetKeySpec(key, spec);
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof ECPrivateKeySpec)
{
return new BCECPrivateKey(algorithm, (ECPrivateKeySpec)keySpec, configuration);
}
else if (keySpec instanceof java.security.spec.ECPrivateKeySpec)
{
return new BCECPrivateKey(algorithm, (java.security.spec.ECPrivateKeySpec)keySpec, configuration);
}
return super.engineGeneratePrivate(keySpec);
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof ECPublicKeySpec)
{
return new BCECPublicKey(algorithm, (ECPublicKeySpec)keySpec, configuration);
}
else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
{
return new BCECPublicKey(algorithm, (java.security.spec.ECPublicKeySpec)keySpec, configuration);
}
return super.engineGeneratePublic(keySpec);
}
public PrivateKey generatePrivate(PrivateKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm();
if (algOid.equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new BCECPrivateKey(algorithm, keyInfo, configuration);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public PublicKey generatePublic(SubjectPublicKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getAlgorithm().getAlgorithm();
if (algOid.equals(X9ObjectIdentifiers.id_ecPublicKey))
{
return new BCECPublicKey(algorithm, keyInfo, configuration);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public static class EC
extends KeyFactorySpi
{
public EC()
{
super("EC", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDSA
extends KeyFactorySpi
{
public ECDSA()
{
super("ECDSA", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECGOST3410
extends KeyFactorySpi
{
public ECGOST3410()
{
super("ECGOST3410", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDH
extends KeyFactorySpi
{
public ECDH()
{
super("ECDH", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECDHC
extends KeyFactorySpi
{
public ECDHC()
{
super("ECDHC", BouncyCastleProvider.CONFIGURATION);
}
}
public static class ECMQV
extends KeyFactorySpi
{
public ECMQV()
{
super("ECMQV", BouncyCastleProvider.CONFIGURATION);
}
}
}