org.jasypt.salt.ZeroSaltGenerator Maven / Gradle / Ivy
/*
* =============================================================================
*
* 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;
}
}