/*
* 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 libcore.util.EmptyArray;
/**
* The source of the label <code>L</code> as specified in <a
* href="http://www.ietf.org/rfc/rfc3447.txt"> PKCS #1</a>.
*/
public class PSource {
private String pSrcName;
private PSource() {}
/**
* Creates a new <code>PSource</code> instance with the specified source
* algorithm identifier.
*
* @param pSrcName
* the source algorithm identifier.
* @throws NullPointerException
* if pSrcName is null.
*/
protected PSource(String pSrcName) {
if (pSrcName == null) {
throw new NullPointerException("pSrcName == null");
}
this.pSrcName = pSrcName;
}
/**
* Returns the source algorithm identifier.
*
* @return the source algorithm identifier.
*/
public String getAlgorithm() {
return pSrcName;
}
/**
* The explicit specification of the parameter <code>P</code> used in the
* source algorithm.
*/
public static final class PSpecified extends PSource {
private final byte[] p;
/**
* The instance of <code>PSpecified</code> with the default value
* <code>byte[0]</code> for <code>P</code>
*/
public static final PSpecified DEFAULT = new PSpecified();
private PSpecified() {
super("PSpecified");
p = EmptyArray.BYTE;
}
/**
* Creates a new instance of <code>PSpecified</code> with the specified
* parameter <code>P</code>.
*
* @param p
* the parameter <code>P</code>.
* @throws NullPointerException
* if <code>p</code> is null.
*/
public PSpecified(byte[] p) {
super("PSpecified");
if (p == null) {
throw new NullPointerException("p == null");
}
//TODO: It is unknown which name should be used!
//super("");
this.p = new byte[p.length];
System.arraycopy(p, 0, this.p, 0, p.length);
}
/**
* Returns a copy of the value of the parameter <code>P</code>.
*
* @return a copy of the value of the parameter <code>P</code>
*/
public byte[] getValue() {
byte[] result = new byte[p.length];
System.arraycopy(p, 0, result, 0, p.length);
return result;
}
}
}