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-rw-r--r--libjava/javax/crypto/NullCipherImpl.java127
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diff --git a/libjava/javax/crypto/NullCipherImpl.java b/libjava/javax/crypto/NullCipherImpl.java
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-/* NullCipherImpl.java -- implementation of NullCipher.
- Copyright (C) 2004 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package javax.crypto;
-
-import java.security.AlgorithmParameters;
-import java.security.Key;
-import java.security.SecureRandom;
-import java.security.spec.AlgorithmParameterSpec;
-
-/**
- * Implementation of the identity cipher.
- */
-final class NullCipherImpl extends CipherSpi
-{
-
- // Constructor.
- // -------------------------------------------------------------------------
-
- NullCipherImpl()
- {
- super();
- }
-
- // Instance methods.
- // -------------------------------------------------------------------------
-
- protected void engineSetMode(String mode) { }
- protected void engineSetPadding(String padding) { }
-
- protected int engineGetBlockSize()
- {
- return 1;
- }
-
- protected int engineGetOutputSize(int inputLen)
- {
- return inputLen;
- }
-
- protected byte[] engineGetIV()
- {
- return null;
- }
-
- protected AlgorithmParameters engineGetParameters()
- {
- return null;
- }
-
- protected void engineInit(int mode, Key key, SecureRandom random) { }
- protected void engineInit(int mode, Key key, AlgorithmParameterSpec spec, SecureRandom random) { }
- protected void engineInit(int mode, Key key, AlgorithmParameters params, SecureRandom random) { }
-
- protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen)
- {
- if (input == null)
- return new byte[0];
- if (inputOffset < 0 || inputLen < 0 || inputOffset + inputLen > input.length)
- throw new ArrayIndexOutOfBoundsException();
- byte[] output = new byte[inputLen];
- System.arraycopy(input, inputOffset, output, 0, inputLen);
- return output;
- }
-
- protected int engineUpdate(byte[] input, int inputOffset, int inputLen,
- byte[] output, int outputOffset)
- throws ShortBufferException
- {
- if (input == null)
- return 0;
- if (inputOffset < 0 || inputLen < 0 || inputOffset + inputLen > input.length
- || outputOffset < 0)
- throw new ArrayIndexOutOfBoundsException();
- if (output.length - outputOffset < inputLen)
- throw new ShortBufferException();
- System.arraycopy(input, inputOffset, output, outputOffset, inputLen);
- return inputLen;
- }
-
- protected byte[] engineDoFinal(byte[] input, int inputOffset, int inputLen)
- {
- return engineUpdate(input, inputOffset, inputLen);
- }
-
- protected int engineDoFinal(byte[] input, int inputOffset, int inputLen,
- byte[] output, int outputOffset)
- throws ShortBufferException
- {
- return engineUpdate(input, inputOffset, inputLen, output, outputOffset);
- }
-}