org.bouncycastle.mozilla.jcajce.JcaSignedPublicKeyAndChallenge Maven / Gradle / Ivy
package org.bouncycastle.mozilla.jcajce;
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.X509EncodedKeySpec;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
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.mozilla.SignedPublicKeyAndChallenge;
/**
* This is designed to parse the SignedPublicKeyAndChallenge created by the
* KEYGEN tag included by Mozilla based browsers.
*
* PublicKeyAndChallenge ::= SEQUENCE {
* spki SubjectPublicKeyInfo,
* challenge IA5STRING
* }
*
* SignedPublicKeyAndChallenge ::= SEQUENCE {
* publicKeyAndChallenge PublicKeyAndChallenge,
* signatureAlgorithm AlgorithmIdentifier,
* signature BIT STRING
* }
*
*/
public class JcaSignedPublicKeyAndChallenge
extends SignedPublicKeyAndChallenge
{
JcaJceHelper helper = new DefaultJcaJceHelper();
private JcaSignedPublicKeyAndChallenge(org.bouncycastle.asn1.mozilla.SignedPublicKeyAndChallenge struct, JcaJceHelper helper)
{
super(struct);
this.helper = helper;
}
public JcaSignedPublicKeyAndChallenge(byte[] bytes)
{
super(bytes);
}
public JcaSignedPublicKeyAndChallenge setProvider(String providerName)
{
return new JcaSignedPublicKeyAndChallenge(this.spkacSeq, new NamedJcaJceHelper(providerName));
}
public JcaSignedPublicKeyAndChallenge setProvider(Provider provider)
{
return new JcaSignedPublicKeyAndChallenge(this.spkacSeq, new ProviderJcaJceHelper(provider));
}
public PublicKey getPublicKey()
throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException
{
try
{
SubjectPublicKeyInfo subjectPublicKeyInfo = spkacSeq.getPublicKeyAndChallenge().getSubjectPublicKeyInfo();
X509EncodedKeySpec xspec = new X509EncodedKeySpec(subjectPublicKeyInfo.getEncoded());
AlgorithmIdentifier keyAlg = subjectPublicKeyInfo.getAlgorithm();
KeyFactory factory = helper.createKeyFactory(keyAlg.getAlgorithm().getId());
return factory.generatePublic(xspec);
}
catch (Exception e)
{
throw new InvalidKeyException("error encoding public key");
}
}
}