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=========================================================
20 package org.onap.aaf.certservice.client.certification;
22 import org.onap.aaf.certservice.client.certification.exception.KeyPairGenerationException;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
26 import java.security.KeyPair;
27 import java.security.KeyPairGenerator;
28 import java.security.NoSuchAlgorithmException;
30 public class KeyPairFactory {
32 private static final Logger LOGGER = LoggerFactory.getLogger(KeyPairFactory.class);
33 private final String encryptionAlgorithm;
34 private final int keySize;
36 public KeyPairFactory(String encryptionAlgorithm, int keySize) {
37 this.encryptionAlgorithm = encryptionAlgorithm;
38 this.keySize = keySize;
41 public KeyPair create() throws KeyPairGenerationException {
43 LOGGER.info("KeyPair generation started with algorithm: {} and key size: {}", encryptionAlgorithm, keySize);
44 return createKeyPairGenerator().generateKeyPair();
45 } catch (NoSuchAlgorithmException e) {
46 String errorMessage = String.format("Generation of KeyPair failed, exception message: %s", e.getMessage());
47 throw new KeyPairGenerationException(errorMessage);
51 private KeyPairGenerator createKeyPairGenerator() throws NoSuchAlgorithmException {
52 KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(encryptionAlgorithm);
53 keyPairGenerator.initialize(keySize);
54 return keyPairGenerator;