BCPemUtilsProvider.java
/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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.keycloak.crypto.def;
import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
import org.keycloak.common.util.DerUtils;
import org.keycloak.common.util.PemException;
import org.keycloak.common.crypto.PemUtilsProvider;
import java.io.StringWriter;
import java.security.PrivateKey;
/**
* Encodes Key or Certificates to PEM format string
*
* @author <a href="mailto:david.anderson@redhat.com">David Anderson</a>
* @version $Revision: 1 $
*/
public class BCPemUtilsProvider extends PemUtilsProvider {
/**
* Encode object to JCA PEM String using BC libraries
*
* @param obj
* @return The encoded PEM string
*/
@Override
protected String encode(Object obj) {
if (obj == null) {
return null;
}
try {
StringWriter writer = new StringWriter();
JcaPEMWriter pemWriter = new JcaPEMWriter(writer);
pemWriter.writeObject(obj);
pemWriter.flush();
pemWriter.close();
String s = writer.toString();
return removeBeginEnd(s);
} catch (Exception e) {
throw new PemException(e);
}
}
@Override
public PrivateKey decodePrivateKey(String pem) {
if (pem == null) {
return null;
}
try {
byte[] der = pemToDer(pem);
return DerUtils.decodePrivateKey(der);
} catch (Exception e) {
throw new PemException(e);
}
}
}