2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020 Nokia. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.aaf.certservice.certification.adapter;
22 import java.io.IOException;
23 import java.security.PrivateKey;
24 import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
25 import org.bouncycastle.crypto.util.PrivateKeyFactory;
26 import org.bouncycastle.operator.ContentSigner;
27 import org.bouncycastle.operator.DefaultDigestAlgorithmIdentifierFinder;
28 import org.bouncycastle.operator.OperatorCreationException;
29 import org.bouncycastle.operator.bc.BcRSAContentSignerBuilder;
30 import org.bouncycastle.pkcs.PKCS10CertificationRequest;
31 import org.springframework.stereotype.Component;
34 public class RSAContentSignerBuilder {
36 ContentSigner build(PKCS10CertificationRequest csr, PrivateKey privateKey)
37 throws IOException, OperatorCreationException {
38 AlgorithmIdentifier sigAlgId = csr.getSignatureAlgorithm();
39 AlgorithmIdentifier digAlgId = new DefaultDigestAlgorithmIdentifierFinder().find(sigAlgId);
41 return new BcRSAContentSignerBuilder(sigAlgId, digAlgId)
42 .build(PrivateKeyFactory.createKey(privateKey.getEncoded()));