mirror of git://gcc.gnu.org/git/gcc.git
109 lines
3.3 KiB
Java
109 lines
3.3 KiB
Java
/* NullCipher.java --
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Copyright (C) 2001, 2002, 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.crypto.cipher;
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import gnu.java.security.Registry;
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import java.security.InvalidKeyException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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/**
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* The implementation of a Null block cipher.
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* <p>
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* This cipher does not alter its input at all, claims to process block sizes
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* 128-, 192- and 256-bit long, and key sizes from 64- to 512-bit in 8-bit
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* increments.
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*/
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public final class NullCipher
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extends BaseCipher
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{
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/** Trivial 0-arguments constructor. */
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public NullCipher()
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{
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super(Registry.NULL_CIPHER, 16, 16);
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}
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public Object clone()
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{
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NullCipher result = new NullCipher();
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result.currentBlockSize = this.currentBlockSize;
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return result;
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}
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public Iterator blockSizes()
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{
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ArrayList al = new ArrayList();
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al.add(Integer.valueOf(64 / 8));
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al.add(Integer.valueOf(128 / 8));
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al.add(Integer.valueOf(192 / 8));
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al.add(Integer.valueOf(256 / 8));
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return Collections.unmodifiableList(al).iterator();
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}
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public Iterator keySizes()
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{
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ArrayList al = new ArrayList();
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for (int n = 8; n < 64; n++)
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al.add(Integer.valueOf(n));
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return Collections.unmodifiableList(al).iterator();
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}
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public Object makeKey(byte[] uk, int bs) throws InvalidKeyException
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{
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return new Object();
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}
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public void encrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
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{
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System.arraycopy(in, i, out, j, bs);
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}
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public void decrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
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{
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System.arraycopy(in, i, out, j, bs);
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}
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public boolean selfTest()
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{
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return true;
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}
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}
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