| /* BlockCipherParameterSpec.java -- |
| Copyright (C) 2002, 2006 Free Software Foundation, Inc. |
| |
| This file is a 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 of the License, 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; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, 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 gnu.javax.crypto.jce.spec; |
| |
| import gnu.java.security.util.Util; |
| |
| import java.security.spec.AlgorithmParameterSpec; |
| |
| /** |
| * Block cipher parameters in GNU are the cipher's name, its block and key |
| * sizes, and an optional initialization vector. |
| */ |
| public class BlockCipherParameterSpec |
| implements AlgorithmParameterSpec |
| { |
| /** The initialization vector. */ |
| protected byte[] iv; |
| /** The cipher's block size, in bytes. */ |
| protected int blockSize; |
| /** The cipher's key size, in bytes. */ |
| protected int keySize; |
| |
| /** |
| * Create a new parameter specification. |
| * |
| * @param iv The initialization vector, or <code>null</code> if there is no |
| * IV. |
| * @param blockSize The cipher's block size, in bytes. |
| * @param keySize The cipher's key size, in bytes. |
| */ |
| public BlockCipherParameterSpec(byte[] iv, int blockSize, int keySize) |
| { |
| this.iv = (iv != null) ? (byte[]) iv.clone() : null; |
| this.blockSize = blockSize; |
| this.keySize = keySize; |
| } |
| |
| /** |
| * Create a new parameter specification with no IV. |
| * |
| * @param blockSize The cipher's block size, in bytes. |
| * @param keySize The cipher's key size, in bytes. |
| */ |
| public BlockCipherParameterSpec(int blockSize, int keySize) |
| { |
| this(null, blockSize, keySize); |
| } |
| |
| /** |
| * Get the initialization vector for the cipher, or <code>null</code> if |
| * there is no IV. |
| * |
| * @return The IV. |
| */ |
| public byte[] getIV() |
| { |
| return iv; |
| } |
| |
| /** |
| * Get the block size of the cipher these parameters are for. |
| * |
| * @return The block size. |
| */ |
| public int getBlockSize() |
| { |
| return blockSize; |
| } |
| |
| /** |
| * Get the key size of the cipher these parameters are for. |
| * |
| * @return The block size. |
| */ |
| public int getKeySize() |
| { |
| return keySize; |
| } |
| |
| public String toString() |
| { |
| return getClass().getName() + " { " |
| + ((iv != null) ? ("IV=" + Util.toString(iv)) + ", " : "") |
| + "BS=" + blockSize + ", KS=" + keySize + " }"; |
| } |
| } |