Class Whirlpool

Implemented Interfaces:
Cloneable, IMessageDigest

public final class Whirlpool
extends BaseHash

Whirlpool, a new 512-bit hashing function operating on messages less than 2 ** 256 bits in length. The function structure is designed according to the Wide Trail strategy and permits a wide variety of implementation trade-offs.

This implementation is of Whirlpool Version 3, described in [1] last revised on May 24th, 2003.

IMPORTANT: This implementation is not thread-safe.


  1. The WHIRLPOOL Hashing Function.
    Paulo S.L.M. Barreto and Vincent Rijmen.

Field Summary

Fields inherited from class

blockSize, buffer, count, hashSize, name

Constructor Summary

Trivial 0-arguments constructor.

Method Summary

protected byte[]
protected byte[]
protected void
protected void
transform(byte[] in, int offset)

Methods inherited from class

blockSize, clone, digest, getResult, hashSize, name, padBuffer, reset, resetContext, selfTest, transform, update, update, update

Methods inherited from class java.lang.Object

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

Constructor Details


public Whirlpool()
Trivial 0-arguments constructor.

Method Details


public Object clone()
Specified by:
clone in interface IMessageDigest
clone in interface BaseHash


protected byte[] getResult()
getResult in interface BaseHash


protected byte[] padBuffer()
padBuffer in interface BaseHash


protected void resetContext()
resetContext in interface BaseHash


public boolean selfTest()
Specified by:
selfTest in interface IMessageDigest
selfTest in interface BaseHash


protected void transform(byte[] in,
                         int offset)
transform in interface BaseHash -- Copyright (C) 2001, 2002, 2006, 2010 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.