1 /*============LICENSE_START=======================================================
2 * aaf-certservice-client
3 * ================================================================================
4 * Copyright (C) 2020 Nokia. All rights reserved.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 * ============LICENSE_END=========================================================
19 package org.onap.aaf.certservice.client.certification;
21 import org.onap.aaf.certservice.client.certification.exception.KeyPairGenerationException;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
25 import java.security.KeyPair;
26 import java.security.KeyPairGenerator;
27 import java.security.NoSuchAlgorithmException;
29 public class KeyPairFactory {
31 private final static Logger LOGGER = LoggerFactory.getLogger(KeyPairFactory.class);
32 private final String encryptionAlgorithm;
33 private final int keySize;
35 public KeyPairFactory(String encryptionAlgorithm, int keySize) {
36 this.encryptionAlgorithm = encryptionAlgorithm;
37 this.keySize = keySize;
40 public KeyPair create() throws KeyPairGenerationException {
42 LOGGER.info("KeyPair generation started with algorithm: {} and key size: {}", encryptionAlgorithm, keySize);
43 return createKeyPairGenerator().generateKeyPair();
44 } catch (NoSuchAlgorithmException e) {
45 String errorMessage = String.format("Generation of KeyPair failed, exception message: %s", e.getMessage());
46 throw new KeyPairGenerationException(errorMessage);
50 private KeyPairGenerator createKeyPairGenerator() throws NoSuchAlgorithmException {
51 KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(encryptionAlgorithm);
52 keyPairGenerator.initialize(keySize);
53 return keyPairGenerator;