/*
* Copyright (c) 1997, 2007, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*
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*/
package com.sun.crypto.provider;
import java.security.KeyRep;
import java.security.InvalidKeyException;
import javax.crypto.SecretKey;
import javax.crypto.spec.DESedeKeySpec;
/**
* This class represents a DES-EDE key.
*
* @author Jan Luehe
*
*/
final class DESedeKey implements SecretKey {
static final long serialVersionUID = 2463986565756745178L;
private byte[] key;
/**
* Creates a DES-EDE key from a given key.
*
* @param key the given key
*
* @exception InvalidKeyException if the given key has a wrong size
*/
DESedeKey(byte[] key) throws InvalidKeyException {
this(key, 0);
}
/**
* Uses the first 24 bytes in key
, beginning at
* offset
, as the DES-EDE key
*
* @param key the buffer with the DES-EDE key
* @param offset the offset in key
, where the DES-EDE key
* starts
*
* @exception InvalidKeyException if the given key has a wrong size
*/
DESedeKey(byte[] key, int offset) throws InvalidKeyException {
if (key==null || ((key.length-offset)