| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| */ |
| package org.apache.hadoop.hdds.security.x509.keys; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdds.security.x509.SecurityConfig; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.security.KeyPair; |
| import java.security.KeyPairGenerator; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.NoSuchProviderException; |
| |
| /** |
| * A class to generate Key Pair for use with Certificates. |
| */ |
| public class HDDSKeyGenerator { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(HDDSKeyGenerator.class); |
| private final SecurityConfig securityConfig; |
| |
| /** |
| * Constructor for HDDSKeyGenerator. |
| * |
| * @param configuration - config |
| */ |
| public HDDSKeyGenerator(Configuration configuration) { |
| this.securityConfig = new SecurityConfig(configuration); |
| } |
| |
| /** |
| * Constructor that takes a SecurityConfig as the Argument. |
| * |
| * @param config - SecurityConfig |
| */ |
| public HDDSKeyGenerator(SecurityConfig config) { |
| this.securityConfig = config; |
| } |
| |
| /** |
| * Returns the Security config used for this object. |
| * |
| * @return SecurityConfig |
| */ |
| public SecurityConfig getSecurityConfig() { |
| return securityConfig; |
| } |
| |
| /** |
| * Use Config to generate key. |
| * |
| * @return KeyPair |
| * @throws NoSuchProviderException - On Error, due to missing Java |
| * dependencies. |
| * @throws NoSuchAlgorithmException - On Error, due to missing Java |
| * dependencies. |
| */ |
| public KeyPair generateKey() throws NoSuchProviderException, |
| NoSuchAlgorithmException { |
| return generateKey(securityConfig.getSize(), |
| securityConfig.getKeyAlgo(), securityConfig.getProvider()); |
| } |
| |
| /** |
| * Specify the size -- all other parameters are used from config. |
| * |
| * @param size - int, valid key sizes. |
| * @return KeyPair |
| * @throws NoSuchProviderException - On Error, due to missing Java |
| * dependencies. |
| * @throws NoSuchAlgorithmException - On Error, due to missing Java |
| * dependencies. |
| */ |
| public KeyPair generateKey(int size) throws |
| NoSuchProviderException, NoSuchAlgorithmException { |
| return generateKey(size, |
| securityConfig.getKeyAlgo(), securityConfig.getProvider()); |
| } |
| |
| /** |
| * Custom Key Generation, all values are user provided. |
| * |
| * @param size - Key Size |
| * @param algorithm - Algorithm to use |
| * @param provider - Security provider. |
| * @return KeyPair. |
| * @throws NoSuchProviderException - On Error, due to missing Java |
| * dependencies. |
| * @throws NoSuchAlgorithmException - On Error, due to missing Java |
| * dependencies. |
| */ |
| public KeyPair generateKey(int size, String algorithm, String provider) |
| throws NoSuchProviderException, NoSuchAlgorithmException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Generating key pair using size:{}, Algorithm:{}, Provider:{}", |
| size, algorithm, provider); |
| } |
| KeyPairGenerator generator = KeyPairGenerator |
| .getInstance(algorithm, provider); |
| generator.initialize(size); |
| return generator.generateKeyPair(); |
| } |
| } |