iaik.security.md

Class RipeMd128

java.lang.Object

java.security.MessageDigestSpi

java.security.MessageDigest

iaik.security.md.AbstractMessageDigest

iaik.security.md.RipeMd128

All Implemented Interfaces:

java.lang.Cloneable

public class RipeMd128
extends AbstractMessageDigest

This class implements the RipeMd128 message digest algorithm. It produces a 128 bit digest (hence the name) and can be considered a good alternative to MD5 when a 128 bit seed is desired. It does not have the recently discovered weaknesses of MD5, however, it is about 40% slower than MD5 but still a lot faster than SHA-1 or RIPEMD160. The name of the algorithm to use with getInstance() is RIPEMD128.

For a specification of the algorithm see Fast Software Encryption, LCS 1039, Springer Verlag, 1996, pp. 71-82. Also available online from http://www.esat.kuleuven.ac.be/cosic/cosic.html.

Version:

File Revision 30

See Also:

MessageDigest

Constructor Summary

Constructors

Constructor and Description
RipeMd128() Creates a new RipeMd128 message digest object.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	clone() Returns a clone of this RipeMd128 Object.
protected void	engineReset() SPI: Resets this RipeMd128 message digest object for being supplied with new data.

Methods inherited from class iaik.security.md.AbstractMessageDigest

engineDigest, engineDigest, engineGetDigestLength, engineUpdate, engineUpdate

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

engineUpdate

Methods inherited from class java.lang.Object

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

Constructor Detail

RipeMd128

public RipeMd128()

Creates a new RipeMd128 message digest object. Applications do not use this constructor. They shall use

 MessageDigest.getInstance("RIPEMD128");

for creating a messageDigest object.

See Also:

MessageDigest.getInstance(java.lang.String)

Method Detail

clone

public java.lang.Object clone()

Returns a clone of this RipeMd128 Object.

Overrides:

clone in class AbstractMessageDigest

Returns:

a clone of this RipeMd128 Object

engineReset

protected void engineReset()

SPI: Resets this RipeMd128 message digest object for being supplied with new data.

This method is called by engineDigest after the actual hash computation has been finished to automatically reset the message digest object for being supplied with new data for starting a new hash computation.

Specified by:

engineReset in class AbstractMessageDigest

See Also:

MessageDigestSpi.engineReset()