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/*
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* 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.certification;
import java.util.Base64;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
import org.bouncycastle.util.io.pem.PemObject;
import org.onap.aaf.certservice.certification.exceptions.CsrDecryptionException;
import org.onap.aaf.certservice.certification.exceptions.DecryptionException;
import org.onap.aaf.certservice.certification.exceptions.KeyDecryptionException;
import org.onap.aaf.certservice.certification.model.CsrModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
@Service
public class CsrModelFactory {
private static final Logger LOGGER = LoggerFactory.getLogger(CsrModelFactory.class);
private final PemObjectFactory pemObjectFactory
= new PemObjectFactory();
private final PKCS10CertificationRequestFactory certificationRequestFactory
= new PKCS10CertificationRequestFactory();
public CsrModel createCsrModel(StringBase64 csr, StringBase64 privateKey)
throws DecryptionException {
LOGGER.debug("Decoded CSR: \n{}", csr);
PKCS10CertificationRequest decodedCsr = decodeCsr(csr);
PemObject decodedPrivateKey = decodePrivateKey(privateKey);
return new CsrModel(decodedCsr, decodedPrivateKey);
}
private PemObject decodePrivateKey(StringBase64 privateKey)
throws KeyDecryptionException {
return pemObjectFactory.createPemObject(privateKey.asString()).orElseThrow(
() -> new KeyDecryptionException("Incorrect Key, decryption failed")
);
}
private PKCS10CertificationRequest decodeCsr(StringBase64 csr)
throws CsrDecryptionException {
return pemObjectFactory.createPemObject(csr.asString())
.flatMap(
certificationRequestFactory::createKCS10CertificationRequest
).orElseThrow(
() -> new CsrDecryptionException("Incorrect CSR, decryption failed")
);
}
public static class StringBase64 {
private final String value;
private final Base64.Decoder decoder = Base64.getDecoder();
public StringBase64(String value) {
this.value = value;
}
public String asString() {
return new String(decoder.decode(value));
}
}
}
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