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package org.bouncycastle.pkcs.jcajce;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Provider;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.X509EncodedKeySpec;
import java.util.Hashtable;
import org.bouncycastle.asn1.pkcs.CertificationRequest;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.jcajce.util.DefaultJcaJceHelper;
import org.bouncycastle.jcajce.util.JcaJceHelper;
import org.bouncycastle.jcajce.util.NamedJcaJceHelper;
import org.bouncycastle.jcajce.util.ProviderJcaJceHelper;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
public class JcaPKCS10CertificationRequest
extends PKCS10CertificationRequest
{
private static Hashtable keyAlgorithms = new Hashtable();
static
{
//
// key types
//
keyAlgorithms.put(PKCSObjectIdentifiers.rsaEncryption, "RSA");
keyAlgorithms.put(X9ObjectIdentifiers.id_dsa, "DSA");
}
private JcaJceHelper helper = new DefaultJcaJceHelper();
public JcaPKCS10CertificationRequest(CertificationRequest certificationRequest)
{
super(certificationRequest);
}
public JcaPKCS10CertificationRequest(byte[] encoding)
throws IOException
{
super(encoding);
}
public JcaPKCS10CertificationRequest(PKCS10CertificationRequest requestHolder)
{
super(requestHolder.toASN1Structure());
}
public JcaPKCS10CertificationRequest setProvider(String providerName)
{
helper = new NamedJcaJceHelper(providerName);
return this;
}
public JcaPKCS10CertificationRequest setProvider(Provider provider)
{
helper = new ProviderJcaJceHelper(provider);
return this;
}
public PublicKey getPublicKey()
throws InvalidKeyException, NoSuchAlgorithmException
{
try
{
SubjectPublicKeyInfo keyInfo = this.getSubjectPublicKeyInfo();
X509EncodedKeySpec xspec = new X509EncodedKeySpec(keyInfo.getEncoded());
KeyFactory kFact;
try
{
kFact = helper.createKeyFactory(keyInfo.getAlgorithm().getAlgorithm().getId());
}
catch (NoSuchAlgorithmException e)
{
//
// try an alternate
//
if (keyAlgorithms.get(keyInfo.getAlgorithm().getAlgorithm()) != null)
{
String keyAlgorithm = (String)keyAlgorithms.get(keyInfo.getAlgorithm().getAlgorithm());
kFact = helper.createKeyFactory(keyAlgorithm);
}
else
{
throw e;
}
}
return kFact.generatePublic(xspec);
}
catch (InvalidKeySpecException e)
{
throw new InvalidKeyException("error decoding public key");
}
catch (IOException e)
{
throw new InvalidKeyException("error extracting key encoding");
}
catch (NoSuchProviderException e)
{
throw new NoSuchAlgorithmException("cannot find provider: " + e.getMessage());
}
}
}
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