/*
* Copyright 2012-2014 Brian Campbell
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jose4j.keys;
import org.jose4j.base64url.SimplePEMEncoder;
import org.jose4j.lang.JoseException;
import java.io.ByteArrayInputStream;
import java.security.cert.*;
/**
*/
public class X509Util
{
private static final String FACTORY_TYPE = "X.509";
private CertificateFactory certFactory;
public X509Util()
{
try
{
certFactory = CertificateFactory.getInstance(FACTORY_TYPE);
}
catch (CertificateException e)
{
throw new IllegalStateException("Couldn't find "+ FACTORY_TYPE + " CertificateFactory!?!", e);
}
}
public String toPem(X509Certificate x509Certificate)
{
try
{
byte[] der = x509Certificate.getEncoded();
return SimplePEMEncoder.encode(der);
}
catch (CertificateEncodingException e)
{
throw new IllegalStateException("Unexpected problem getting encoded certificate.", e);
}
}
public X509Certificate fromBase64Der(String b64EncodedDer) throws JoseException
{
byte[] der = SimplePEMEncoder.decode(b64EncodedDer);
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(der);
try
{
Certificate certificate = certFactory.generateCertificate(byteArrayInputStream);
return (X509Certificate) certificate;
}
catch (CertificateException e)
{
throw new JoseException("Unable to convert " + b64EncodedDer + " value to X509Certificate: " + e, e);
}
}
}