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/*
* ============LICENSE_START=======================================================
* aaf-certservice-client
* ================================================================================
* Copyright (C) 2020 Nokia. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aaf.certservice.client.certification;
import java.io.IOException;
import java.io.StringWriter;
import java.security.PrivateKey;
import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
import org.bouncycastle.util.io.pem.PemObject;
import org.onap.aaf.certservice.client.certification.exception.PkEncodingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PrivateKeyToPemEncoder {
private static final Logger LOGGER = LoggerFactory.getLogger(PrivateKeyToPemEncoder.class);
private static final String PEM_OBJECT_TYPE = "RSA PRIVATE KEY";
public String encodePrivateKeyToPem(PrivateKey pk) throws PkEncodingException {
LOGGER.info("Attempt to encode private key to PEM");
StringWriter stringWriter = new StringWriter();
try (JcaPEMWriter pemWriter = new JcaPEMWriter(stringWriter)) {
pemWriter.writeObject(new PemObject(PEM_OBJECT_TYPE, pk.getEncoded()));
} catch (IOException e) {
LOGGER.error("Encode of private key to PEM failed. Exception message: {}", e.getMessage());
throw new PkEncodingException(e);
}
return stringWriter.toString();
}
}
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