| package org.apache.fulcrum.jce.crypto.extended; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.security.GeneralSecurityException; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.fulcrum.jce.crypto.CryptoStreamFactory; |
| import org.apache.fulcrum.jce.crypto.CryptoUtil; |
| import org.apache.fulcrum.jce.crypto.StreamUtil; |
| import org.apache.fulcrum.jce.crypto.extended.CryptoParametersJ8.TYPES; |
| |
| /** |
| * Helper class to provide typed functions to work with CryptoStreams. |
| * |
| * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl </a> |
| * @author <a href="mailto:gk@apache.org">Georg Kallidis</a> |
| */ |
| public final class CryptoUtilJ8 extends CryptoUtil { |
| |
| /** the typed default instances */ |
| private static final Map<TYPES, CryptoUtilJ8> instances = new ConcurrentHashMap<>(); |
| |
| /** the default instances with custom settings **/ |
| private static final Map<TYPES, CryptoUtilJ8> instancesWithExplicitParams = new ConcurrentHashMap<>(); |
| |
| /** |
| * Factory method to get a default instance |
| * |
| * default type PDC |
| * |
| * @return an instance of the CryptoStreamFactory |
| */ |
| public static CryptoUtilJ8 getInstance() { |
| synchronized (CryptoUtilJ8.class) { |
| TYPES defaultType = CryptoParametersJ8.DEFAULT_TYPE; |
| if (instances.isEmpty() && !instances.containsKey(defaultType)) { |
| instances.put(defaultType, new CryptoUtilJ8()); |
| } |
| return instances.get(defaultType); |
| } |
| } |
| |
| /** |
| * Factory method to get a default instance |
| * |
| * @param type one of the enum {@link TYPES}. |
| * @return an instance of the CryptoStreamFactory |
| */ |
| public static CryptoUtilJ8 getInstance(TYPES type) { |
| synchronized (CryptoUtilJ8.class) { |
| if (!instances.containsKey(type)) { |
| instances.put(type, new CryptoUtilJ8(type)); |
| } |
| return instances.get(type); |
| } |
| } |
| |
| /** |
| * Factory method to get a default instance |
| * |
| * @param type one of the enum {@link TYPES}. |
| * @param salt the salt |
| * @param count the iteration count |
| * @return an instance of the CryptoStreamFactory |
| */ |
| public static CryptoUtilJ8 getInstance(TYPES type, byte[] salt, int count) { |
| synchronized (CryptoUtilJ8.class) { |
| if (!instancesWithExplicitParams.containsKey(type)) { |
| instancesWithExplicitParams.put(type, new CryptoUtilJ8(type, salt, count)); |
| } |
| return instancesWithExplicitParams.get(type); |
| } |
| } |
| |
| private CryptoUtilJ8() { |
| cryptoStreamFactory = CryptoStreamFactoryJ8Template.getInstance(); |
| } |
| |
| private CryptoUtilJ8(TYPES type) { |
| cryptoStreamFactory = CryptoStreamFactoryJ8Template.getInstance(type); |
| } |
| |
| /** |
| * |
| * @param type one of the enum {@link TYPES}. |
| * @param salt v |
| * @param count the iteration count |
| */ |
| protected CryptoUtilJ8(TYPES type, byte[] salt, int count) { |
| cryptoStreamFactory = CryptoStreamFactoryJ8Template.getInstance(type, salt, count); |
| } |
| |
| /** |
| * Copies from a source to a target object using encryption and a caller |
| * supplied CryptoStreamFactory. |
| * |
| * {@link CryptoStreamFactoryJ8Template#getOutputStream(InputStream, OutputStream, char[])} |
| * |
| * @param factory the factory to create the crypto streams |
| * @param source the source object |
| * @param target the target object |
| * @param password the password to use for encryption |
| * @throws GeneralSecurityException accessing JCE failed |
| * @throws IOException accessing the source failed |
| */ |
| @Override |
| public void encrypt(CryptoStreamFactory factory, Object source, Object target, char[] password) |
| throws GeneralSecurityException, IOException { |
| InputStream is = StreamUtil.createInputStream(source); |
| OutputStream os = StreamUtil.createOutputStream(target); |
| ((CryptoStreamFactoryJ8) factory).getOutputStream(is, os, password); |
| } |
| |
| /** |
| * Copies from a source to a target object using decryption and a caller-suppier |
| * CryptoStreamFactory. |
| * |
| * @param factory the factory to create the crypto streams |
| * @param source the source object |
| * @param target the target object |
| * @param password the password to use for decryption |
| * @throws GeneralSecurityException accessing JCE failed |
| * @throws IOException accessing the source failed |
| */ |
| @Override |
| protected void decrypt(CryptoStreamFactory factory, Object source, Object target, char[] password) |
| throws GeneralSecurityException, IOException { |
| InputStream is = StreamUtil.createInputStream(source); |
| OutputStream os = StreamUtil.createOutputStream(target); |
| InputStream dis = factory.getInputStream(is, password); |
| StreamUtil.copy(dis, os); |
| } |
| |
| public static Map<TYPES, CryptoUtilJ8> getInstances() { |
| return instances; |
| } |
| |
| public static Map<TYPES, CryptoUtilJ8> getInstancesWithExplicitParams() { |
| return instancesWithExplicitParams; |
| } |
| |
| } |