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This OSGi bundle wraps ${pkgArtifactId} ${pkgVersion} jar file.
package org.bouncycastle.jcajce.provider.asymmetric.dsa;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import java.security.spec.DSAPrivateKeySpec;
import java.security.spec.DSAPublicKeySpec;
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.crypto.CipherParameters;
import org.bouncycastle.crypto.params.DSAParameters;
import org.bouncycastle.crypto.params.DSAPrivateKeyParameters;
import org.bouncycastle.crypto.params.DSAPublicKeyParameters;
import org.bouncycastle.crypto.util.OpenSSHPrivateKeyUtil;
import org.bouncycastle.crypto.util.OpenSSHPublicKeyUtil;
import org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi;
import org.bouncycastle.jcajce.spec.OpenSSHPrivateKeySpec;
import org.bouncycastle.jcajce.spec.OpenSSHPublicKeySpec;
public class KeyFactorySpi
extends BaseKeyFactorySpi
{
public KeyFactorySpi()
{
}
protected KeySpec engineGetKeySpec(
Key key,
Class spec)
throws InvalidKeySpecException
{
if (spec.isAssignableFrom(DSAPublicKeySpec.class) && key instanceof DSAPublicKey)
{
DSAPublicKey k = (DSAPublicKey)key;
return new DSAPublicKeySpec(k.getY(), k.getParams().getP(), k.getParams().getQ(), k.getParams().getG());
}
else if (spec.isAssignableFrom(DSAPrivateKeySpec.class) && key instanceof java.security.interfaces.DSAPrivateKey)
{
java.security.interfaces.DSAPrivateKey k = (java.security.interfaces.DSAPrivateKey)key;
return new DSAPrivateKeySpec(k.getX(), k.getParams().getP(), k.getParams().getQ(), k.getParams().getG());
}
else if (spec.isAssignableFrom(OpenSSHPublicKeySpec.class) && key instanceof java.security.interfaces.DSAPublicKey)
{
DSAPublicKey k = (DSAPublicKey)key;
try
{
return new OpenSSHPublicKeySpec(OpenSSHPublicKeyUtil.encodePublicKey(new DSAPublicKeyParameters(k.getY(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
else if (spec.isAssignableFrom(OpenSSHPrivateKeySpec.class) && key instanceof java.security.interfaces.DSAPrivateKey)
{
DSAPrivateKey k = (DSAPrivateKey)key;
try
{
return new OpenSSHPrivateKeySpec(OpenSSHPrivateKeyUtil.encodePrivateKey(new DSAPrivateKeyParameters(k.getX(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.OpenSSHPublicKeySpec.class) && key instanceof java.security.interfaces.DSAPublicKey)
{
DSAPublicKey k = (DSAPublicKey)key;
try
{
return new org.bouncycastle.jce.spec.OpenSSHPublicKeySpec(OpenSSHPublicKeyUtil.encodePublicKey(new DSAPublicKeyParameters(k.getY(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.OpenSSHPrivateKeySpec.class) && key instanceof java.security.interfaces.DSAPrivateKey)
{
DSAPrivateKey k = (DSAPrivateKey)key;
try
{
return new org.bouncycastle.jce.spec.OpenSSHPrivateKeySpec(OpenSSHPrivateKeyUtil.encodePrivateKey(new DSAPrivateKeyParameters(k.getX(), new DSAParameters(k.getParams().getP(), k.getParams().getQ(), k.getParams().getG()))));
}
catch (IOException e)
{
throw new IllegalArgumentException("unable to produce encoding: " + e.getMessage());
}
}
return super.engineGetKeySpec(key, spec);
}
protected Key engineTranslateKey(
Key key)
throws InvalidKeyException
{
if (key instanceof DSAPublicKey)
{
return new BCDSAPublicKey((DSAPublicKey)key);
}
else if (key instanceof DSAPrivateKey)
{
return new BCDSAPrivateKey((DSAPrivateKey)key);
}
throw new InvalidKeyException("key type unknown");
}
public PrivateKey generatePrivate(PrivateKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm();
if (DSAUtil.isDsaOid(algOid))
{
return new BCDSAPrivateKey(keyInfo);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
public PublicKey generatePublic(SubjectPublicKeyInfo keyInfo)
throws IOException
{
ASN1ObjectIdentifier algOid = keyInfo.getAlgorithm().getAlgorithm();
if (DSAUtil.isDsaOid(algOid))
{
return new BCDSAPublicKey(keyInfo);
}
else
{
throw new IOException("algorithm identifier " + algOid + " in key not recognised");
}
}
protected PrivateKey engineGeneratePrivate(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof DSAPrivateKeySpec)
{
return new BCDSAPrivateKey((DSAPrivateKeySpec)keySpec);
}
else if (keySpec instanceof OpenSSHPrivateKeySpec)
{
CipherParameters params = OpenSSHPrivateKeyUtil.parsePrivateKeyBlob(((OpenSSHPrivateKeySpec)keySpec).getEncoded());
if (params instanceof DSAPrivateKeyParameters)
{
return engineGeneratePrivate(
new DSAPrivateKeySpec(
((DSAPrivateKeyParameters)params).getX(),
((DSAPrivateKeyParameters)params).getParameters().getP(),
((DSAPrivateKeyParameters)params).getParameters().getQ(),
((DSAPrivateKeyParameters)params).getParameters().getG()));
}
else
{
throw new IllegalArgumentException("openssh private key is not dsa privare key");
}
}
return super.engineGeneratePrivate(keySpec);
}
protected PublicKey engineGeneratePublic(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof DSAPublicKeySpec)
{
try
{
return new BCDSAPublicKey((DSAPublicKeySpec)keySpec);
}
catch (final Exception e)
{
throw new InvalidKeySpecException("invalid KeySpec: " + e.getMessage())
{
public Throwable getCause()
{
return e;
}
};
}
}
else if (keySpec instanceof OpenSSHPublicKeySpec)
{
CipherParameters parameters = OpenSSHPublicKeyUtil.parsePublicKey(((OpenSSHPublicKeySpec)keySpec).getEncoded());
if (parameters instanceof DSAPublicKeyParameters)
{
return engineGeneratePublic(
new DSAPublicKeySpec(((DSAPublicKeyParameters)parameters).getY(),
((DSAPublicKeyParameters)parameters).getParameters().getP(),
((DSAPublicKeyParameters)parameters).getParameters().getQ(),
((DSAPublicKeyParameters)parameters).getParameters().getG()));
}
throw new IllegalArgumentException("openssh public key is not dsa public key");
}
return super.engineGeneratePublic(keySpec);
}
}