javax.crypto.spec.PBEParameterSpec Maven / Gradle / Ivy
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* 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 javax.crypto.spec;
import java.security.spec.AlgorithmParameterSpec;
/**
* The algorithm parameter specification for a password based encryption
* algorithm.
*
* Password based encryption is described in PKCS #5.
*
*/
public class PBEParameterSpec implements AlgorithmParameterSpec {
private final byte[] salt;
private final int iterationCount;
/**
* Creates a new PBEParameterSpec with the specified salt and
* iteration count.
*
* @param salt
* the salt.
* @param iterationCount
* the iteration count.
* @throws NullPointerException
* if salt is null.
*/
public PBEParameterSpec(byte[] salt, int iterationCount) {
if (salt == null) {
throw new NullPointerException("salt == null");
}
this.salt = new byte[salt.length];
System.arraycopy(salt, 0, this.salt, 0, salt.length);
this.iterationCount = iterationCount;
}
/**
* Returns a copy to the salt.
*
* @return a copy to the salt.
*/
public byte[] getSalt() {
byte[] result = new byte[salt.length];
System.arraycopy(salt, 0, result, 0, salt.length);
return result;
}
/**
* Returns the iteration count.
*
* @return the iteration count.
*/
public int getIterationCount() {
return iterationCount;
}
}