| /* |
| * 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. |
| */ |
| |
| /** |
| * @author Boris V. Kuznetsov |
| * @version $Revision$ |
| */ |
| |
| package org.apache.harmony.crypto.internal; |
| |
| import java.nio.ByteBuffer; |
| import java.security.AlgorithmParameters; |
| import java.security.InvalidAlgorithmParameterException; |
| import java.security.InvalidKeyException; |
| import java.security.Key; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.SecureRandom; |
| import java.security.spec.AlgorithmParameterSpec; |
| import javax.crypto.BadPaddingException; |
| import javax.crypto.CipherSpi; |
| import javax.crypto.IllegalBlockSizeException; |
| import javax.crypto.NoSuchPaddingException; |
| import javax.crypto.ShortBufferException; |
| |
| /** |
| * CipherSpi implementation for javax.crypto.NullCipher |
| * |
| */ |
| public class NullCipherSpi extends CipherSpi { |
| |
| @Override |
| public void engineSetMode(String arg0) throws NoSuchAlgorithmException { |
| // Do nothing |
| } |
| |
| @Override |
| public void engineSetPadding(String arg0) throws NoSuchPaddingException { |
| // Do nothing |
| } |
| |
| @Override |
| public int engineGetBlockSize() { |
| return 1; |
| } |
| |
| @Override |
| public int engineGetOutputSize(int inputLen) { |
| return inputLen; |
| } |
| |
| @Override |
| public byte[] engineGetIV() { |
| return new byte[8]; // compatible with RI |
| } |
| |
| @Override |
| public AlgorithmParameters engineGetParameters() { |
| return null; |
| } |
| |
| @Override |
| public void engineInit(int opmode, Key key, SecureRandom random) |
| throws InvalidKeyException { |
| // Do nothing |
| } |
| |
| @Override |
| public void engineInit(int opmode, Key key, AlgorithmParameterSpec params, |
| SecureRandom random) throws InvalidKeyException, |
| InvalidAlgorithmParameterException { |
| // Do nothing |
| } |
| |
| @Override |
| public void engineInit(int opmode, Key key, AlgorithmParameters params, |
| SecureRandom random) throws InvalidKeyException, |
| InvalidAlgorithmParameterException { |
| // Do nothing |
| } |
| |
| @Override |
| public byte[] engineUpdate(byte[] input, int inputOffset, int inputLen) { |
| if (input == null) { |
| return null; |
| } |
| byte[] result = new byte[inputLen]; |
| System.arraycopy(input, inputOffset, result, 0, inputLen); |
| return result; |
| } |
| |
| @Override |
| public int engineUpdate(byte[] input, int inputOffset, int inputLen, |
| byte[] output, int outputOffset) throws ShortBufferException { |
| if (input == null) { |
| return 0; |
| } |
| System.arraycopy(input, inputOffset, output, outputOffset, inputLen); |
| return inputLen; |
| } |
| |
| @Override |
| public int engineUpdate(ByteBuffer input, ByteBuffer output) |
| throws ShortBufferException { |
| if (input == null || output == null) { |
| throw new NullPointerException(); |
| } |
| int result = input.limit() - input.position(); |
| try { |
| output.put(input); |
| } catch (java.nio.BufferOverflowException e) { |
| throw new ShortBufferException("output buffer too small"); |
| } |
| return result; |
| } |
| |
| @Override |
| public byte[] engineDoFinal(byte[] input, int inputOffset, int inputLen) |
| throws IllegalBlockSizeException, BadPaddingException { |
| if (input == null) { |
| return null; |
| } |
| return engineUpdate(input, inputOffset, inputLen); |
| } |
| |
| @Override |
| public int engineDoFinal(byte[] input, int inputOffset, int inputLen, |
| byte[] output, int outputOffset) throws ShortBufferException, |
| IllegalBlockSizeException, BadPaddingException { |
| int result = engineUpdate(input, inputOffset, inputLen, output, |
| outputOffset); |
| return result; |
| } |
| |
| @Override |
| public int engineDoFinal(ByteBuffer input, ByteBuffer output) |
| throws ShortBufferException, IllegalBlockSizeException, |
| BadPaddingException { |
| return engineUpdate(input, output); |
| } |
| |
| @Override |
| public byte[] engineWrap(Key key) throws IllegalBlockSizeException, InvalidKeyException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, |
| int wrappedKeyType) throws InvalidKeyException, |
| NoSuchAlgorithmException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int engineGetKeySize(Key key) throws InvalidKeyException { |
| throw new UnsupportedOperationException(); |
| } |
| } |