| /* |
| * Copyright (c) 2003, 2011, 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.crypto.provider; |
| |
| import java.security.*; |
| import java.security.spec.*; |
| |
| import javax.crypto.*; |
| import javax.crypto.spec.RC2ParameterSpec; |
| |
| /** |
| * JCE CipherSpi for the RC2(tm) algorithm as described in RFC 2268. |
| * The real code is in CipherCore and RC2Crypt. |
| * |
| * @since 1.5 |
| * @author Andreas Sterbenz |
| */ |
| public final class RC2Cipher extends CipherSpi { |
| |
| // internal CipherCore & RC2Crypt objects which do the real work. |
| private final CipherCore core; |
| private final RC2Crypt embeddedCipher; |
| |
| public RC2Cipher() { |
| embeddedCipher = new RC2Crypt(); |
| core = new CipherCore(embeddedCipher, 8); |
| } |
| |
| protected void engineSetMode(String mode) |
| throws NoSuchAlgorithmException { |
| core.setMode(mode); |
| } |
| |
| protected void engineSetPadding(String paddingScheme) |
| throws NoSuchPaddingException { |
| core.setPadding(paddingScheme); |
| } |
| |
| protected int engineGetBlockSize() { |
| return 8; |
| } |
| |
| protected int engineGetOutputSize(int inputLen) { |
| return core.getOutputSize(inputLen); |
| } |
| |
| protected byte[] engineGetIV() { |
| return core.getIV(); |
| } |
| |
| protected AlgorithmParameters engineGetParameters() { |
| return core.getParameters("RC2"); |
| } |
| |
| protected void engineInit(int opmode, Key key, SecureRandom random) |
| throws InvalidKeyException { |
| embeddedCipher.initEffectiveKeyBits(0); |
| core.init(opmode, key, random); |
| } |
| |
| protected void engineInit(int opmode, Key key, |
| AlgorithmParameterSpec params, SecureRandom random) |
| throws InvalidKeyException, InvalidAlgorithmParameterException { |
| if (params != null && params instanceof RC2ParameterSpec) { |
| embeddedCipher.initEffectiveKeyBits |
| (((RC2ParameterSpec)params).getEffectiveKeyBits()); |
| } else { |
| embeddedCipher.initEffectiveKeyBits(0); |
| } |
| core.init(opmode, key, params, random); |
| } |
| |
| protected void engineInit(int opmode, Key key, |
| AlgorithmParameters params, SecureRandom random) |
| throws InvalidKeyException, InvalidAlgorithmParameterException { |
| if (params != null && params.getAlgorithm().equals("RC2")) { |
| try { |
| RC2ParameterSpec rc2Params = |
| params.getParameterSpec(RC2ParameterSpec.class); |
| engineInit(opmode, key, rc2Params, random); |
| } catch (InvalidParameterSpecException ipse) { |
| throw new InvalidAlgorithmParameterException |
| ("Wrong parameter type: RC2 expected"); |
| } |
| } else { |
| embeddedCipher.initEffectiveKeyBits(0); |
| core.init(opmode, key, params, random); |
| } |
| } |
| |
| protected byte[] engineUpdate(byte[] in, int inOfs, int inLen) { |
| return core.update(in, inOfs, inLen); |
| } |
| |
| protected int engineUpdate(byte[] in, int inOfs, int inLen, |
| byte[] out, int outOfs) throws ShortBufferException { |
| return core.update(in, inOfs, inLen, out, outOfs); |
| } |
| |
| protected byte[] engineDoFinal(byte[] in, int inOfs, int inLen) |
| throws IllegalBlockSizeException, BadPaddingException { |
| return core.doFinal(in, inOfs, inLen); |
| } |
| |
| protected int engineDoFinal(byte[] in, int inOfs, int inLen, |
| byte[] out, int outOfs) throws IllegalBlockSizeException, |
| ShortBufferException, BadPaddingException { |
| return core.doFinal(in, inOfs, inLen, out, outOfs); |
| } |
| |
| protected int engineGetKeySize(Key key) throws InvalidKeyException { |
| byte[] keyBytes = CipherCore.getKeyBytes(key); |
| RC2Crypt.checkKey(key.getAlgorithm(), keyBytes.length); |
| return keyBytes.length << 3; |
| } |
| |
| protected byte[] engineWrap(Key key) |
| throws IllegalBlockSizeException, InvalidKeyException { |
| return core.wrap(key); |
| } |
| |
| protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, |
| int wrappedKeyType) throws InvalidKeyException, |
| NoSuchAlgorithmException { |
| return core.unwrap(wrappedKey, wrappedKeyAlgorithm, wrappedKeyType); |
| } |
| |
| } |