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gnu.javax.crypto.jce.spec

Class BlockCipherParameterSpec

Implemented Interfaces:
AlgorithmParameterSpec
public class BlockCipherParameterSpec
extends Object
implements AlgorithmParameterSpec
Block cipher parameters in GNU are the cipher's name, its block and key sizes, and an optional initialization vector.

Field Summary

protected int
blockSize
The cipher's block size, in bytes.
protected byte[]
iv
The initialization vector.
protected int
keySize
The cipher's key size, in bytes.

Constructor Summary

BlockCipherParameterSpec(byte[] iv, int blockSize, int keySize)
Create a new parameter specification.
BlockCipherParameterSpec(int blockSize, int keySize)
Create a new parameter specification with no IV.

Method Summary

int
getBlockSize()
Get the block size of the cipher these parameters are for.
byte[]
getIV()
Get the initialization vector for the cipher, or null if there is no IV.
int
getKeySize()
Get the key size of the cipher these parameters are for.
String
toString()
Convert this Object to a human-readable String.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

blockSize

protected int blockSize
The cipher's block size, in bytes.

iv

protected byte[] iv
The initialization vector.

keySize

protected int keySize
The cipher's key size, in bytes.

Constructor Details

BlockCipherParameterSpec

public BlockCipherParameterSpec(byte[] iv,
                                int blockSize,
                                int keySize)
Create a new parameter specification.
Parameters:
iv - The initialization vector, or null if there is no IV.
blockSize - The cipher's block size, in bytes.
keySize - The cipher's key size, in bytes.

BlockCipherParameterSpec

public BlockCipherParameterSpec(int blockSize,
                                int keySize)
Create a new parameter specification with no IV.
Parameters:
blockSize - The cipher's block size, in bytes.
keySize - The cipher's key size, in bytes.

Method Details

getBlockSize

public int getBlockSize()
Get the block size of the cipher these parameters are for.
Returns:
The block size.

getIV

public byte[] getIV()
Get the initialization vector for the cipher, or null if there is no IV.
Returns:
The IV.

getKeySize

public int getKeySize()
Get the key size of the cipher these parameters are for.
Returns:
The block size.

toString

public String toString()
Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() and such.

It is typical, but not required, to ensure that this method never completes abruptly with a RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

Overrides:
toString in interface Object
Returns:
the String representing this Object, which may be null
See Also:
getClass(), Object.hashCode(), Class.getName(), Integer.toHexString(int)
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.

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