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/*
 * =============================================================================
 * 
 *   Copyright (c) 2007-2010, The JASYPT team (http://www.jasypt.org)
 * 
 *   Licensed 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.jasypt.salt;

import java.util.Arrays;


/**
 * 

* This implementation of {@link SaltGenerator} always returns a salt * of the required length, filled with zero bytes. *

*

* This class is thread-safe. *

* * @since 1.4 * * @author Daniel Fernández * */ public class ZeroSaltGenerator implements SaltGenerator { /** * Creates a new instance of ZeroSaltGenerator * */ public ZeroSaltGenerator() { super(); } /** * Return salt with the specified byte length. This will return * an array of zero bytes, with the specified length. * * @param lengthBytes length in bytes. * @return the generated salt. */ public byte[] generateSalt(final int lengthBytes) { final byte[] result = new byte[lengthBytes]; Arrays.fill(result, (byte)0); return result; } /** * As this salt generator provides a predictable salt, its inclusion * unencrypted in encryption results * is not necessary, and in fact not desirable (so that it remains hidden). * * @return false */ public boolean includePlainSaltInEncryptionResults() { return false; } }




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