mirror of git://gcc.gnu.org/git/gcc.git
97 lines
3.1 KiB
Java
97 lines
3.1 KiB
Java
/* IvParameterSpec.java -- A simple wrapper for initialization vectors.
|
|
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.spec;
|
|
|
|
import java.security.spec.AlgorithmParameterSpec;
|
|
|
|
/**
|
|
* A wrapper for an initialization vector. An initialization vector is
|
|
* necessary for any cipher in any <i>feedback mode</i>, e.g. CBC.
|
|
*
|
|
* @author Casey Marshall (csm@gnu.org)
|
|
*/
|
|
public class IvParameterSpec implements AlgorithmParameterSpec
|
|
{
|
|
|
|
// Fields.
|
|
// ------------------------------------------------------------------------
|
|
|
|
/** The IV. */
|
|
private byte[] iv;
|
|
|
|
// Constructors.
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Create a new initialization vector spec from an entire byte array.
|
|
*
|
|
* @param iv The IV bytes.
|
|
*/
|
|
public IvParameterSpec(byte[] iv)
|
|
{
|
|
this(iv, 0, iv.length);
|
|
}
|
|
|
|
/**
|
|
* Create a new initialization vector spec from part of a byte array.
|
|
*
|
|
* @param iv The IV bytes.
|
|
* @param off The offset into the IV bytes.
|
|
* @param len The number of IV bytes.
|
|
*/
|
|
public IvParameterSpec(byte[] iv, int off, int len)
|
|
{
|
|
this.iv = new byte[len];
|
|
System.arraycopy(iv, off, this.iv, 0, len);
|
|
}
|
|
|
|
// Instance methods.
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Returns the IV. This method does not copy the byte array.
|
|
*
|
|
* @return The IV.
|
|
*/
|
|
public byte[] getIV()
|
|
{
|
|
return iv;
|
|
}
|
|
}
|