cryptix.provider.md

Class RIPEMD128

java.lang.Object

java.security.MessageDigestSpi

java.security.MessageDigest

cryptix.provider.md.RIPEMD128

All Implemented Interfaces:

java.lang.Cloneable

public class RIPEMD128
extends java.security.MessageDigest
implements java.lang.Cloneable

Implements the RIPEMD128 message digest algorithm in Java as per the reference below.

References:

1. Hans Dobbertin, Antoon Bosselaers and Bart Preneel, "RIPEMD-160: A Strengthened Version of RIPEMD," 18 April 1996. A joint publication by the German Information Security Agency (POB 20 03 63, D-53133 Bonn, Germany) and the Katholieke Universiteit Leuven, ESAT-COSIC (K. Mercierlaan 94, B-3001 Heverlee, Belgium).

Copyright © 1997 Systemics Ltd on behalf of the Cryptix Development Team.
All rights reserved.

$Revision: 1.4 $

Since:

Cryptix 2.2.2

Author:

Raif S. Naffah, David Hopwood

Constructor Summary

Constructors

Constructor and Description
RIPEMD128()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Return a copy of this MD object.
protected byte[]	engineDigest() Complete the hash computation by performing final operations such as padding.
protected int	engineGetDigestLength() SPI: Return the digest length in bytes.
protected void	engineReset() Resets this object disregarding any temporary data present at the time of the invocation of this call.
protected void	engineUpdate(byte input) Continue a RIPEMD128 message digest using the input byte.
void	engineUpdate(byte[] input, int offset, int len) RIPEMD128 block update operation.
static LinkStatus	getLinkStatus()

Methods inherited from class java.security.MessageDigest

digest, digest, digest, getAlgorithm, getDigestLength, getInstance, getInstance, getInstance, getProvider, isEqual, reset, toString, update, update, update, update

Methods inherited from class java.security.MessageDigestSpi

engineDigest, engineUpdate

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RIPEMD128

public RIPEMD128()

Method Detail

getLinkStatus

public static LinkStatus getLinkStatus()

clone

public java.lang.Object clone()

Return a copy of this MD object.

Overrides:

clone in class java.security.MessageDigest

engineReset

protected void engineReset()

Resets this object disregarding any temporary data present at the time of the invocation of this call.

Specified by:

engineReset in class java.security.MessageDigestSpi

engineUpdate

protected void engineUpdate(byte input)

Continue a RIPEMD128 message digest using the input byte.

Specified by:

engineUpdate in class java.security.MessageDigestSpi

engineUpdate

public void engineUpdate(byte[] input,
                         int offset,
                         int len)

RIPEMD128 block update operation.

Continues a RIPEMD128 message digest operation, by filling the buffer, transform(ing) data in 512-bit message block(s), updating the variables context and count, and leaving (buffering) the remaining bytes in buffer for the next update or finish.

Specified by:

engineUpdate in class java.security.MessageDigestSpi

Parameters:

input - input block

offset - start of meaningful bytes in input

len - count of bytes in input block to consider

engineDigest

protected byte[] engineDigest()

Complete the hash computation by performing final operations such as padding. At the return of this engineDigest, the MD engine is reset.

Specified by:

engineDigest in class java.security.MessageDigestSpi

Returns:

the array of bytes for the resulting hash value.

engineGetDigestLength

protected int engineGetDigestLength()

SPI: Return the digest length in bytes.

Overrides:

engineGetDigestLength in class java.security.MessageDigestSpi