| /* |
| * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| import java.security.GeneralSecurityException; |
| import java.security.Provider; |
| import java.security.Security; |
| import javax.crypto.SecretKey; |
| import javax.crypto.Cipher; |
| import javax.crypto.SecretKeyFactory; |
| import javax.crypto.spec.PBEKeySpec; |
| import javax.crypto.spec.PBEParameterSpec; |
| |
| /** |
| * Default wrapper for a password based encryption Cipher. |
| */ |
| |
| public class DefaultPBEWrapper extends AbstractPBEWrapper { |
| /** |
| * Define default SALT size as 8. |
| */ |
| private static final int PBE_SALT_SIZE = 8; |
| |
| /** |
| * Default PBE wrapper constructor. |
| * |
| * @param algo PGE algorithm to wrap. |
| * @param passwd password phrase |
| */ |
| public DefaultPBEWrapper(PBEAlgorithm algo, String passwd) { |
| super(algo, passwd, PBE_SALT_SIZE); |
| } |
| |
| /** |
| * Instantiate Cipher for the PBE algorithm. |
| * |
| * @param mode Cipher mode: encrypt or decrypt. |
| * @return Cipher in accordance to the PBE algorithm |
| * @throws java.security.GeneralSecurityException |
| */ |
| @Override |
| protected Cipher initCipher(int mode) throws GeneralSecurityException { |
| Provider provider = Security.getProvider("SunJCE"); |
| if (provider == null) { |
| throw new RuntimeException("SunJCE provider does not exist."); |
| } |
| SecretKey key = SecretKeyFactory.getInstance(baseAlgo) |
| .generateSecret(new PBEKeySpec(password.toCharArray())); |
| Cipher ci = Cipher.getInstance(transformation, provider); |
| ci.init(mode, key, new PBEParameterSpec(salt, DEFAULT_ITERATION)); |
| return ci; |
| } |
| } |