org.apache.geronimo.util.crypto.digests
Class MD4Digest

java.lang.Object
  org.apache.geronimo.util.crypto.digests.GeneralDigest
      org.apache.geronimo.util.crypto.digests.MD4Digest

All Implemented Interfaces:

Digest, ExtendedDigest

public class MD4Digest
extends GeneralDigest

implementation of MD4 as RFC 1320 by R. Rivest, MIT Laboratory for Computer Science and RSA Data Security, Inc.

NOTE: This algorithm is only included for backwards compatability with legacy applications, it's not secure, don't use it for anything new!

Constructor Summary

MD4Digest()
Standard constructor

MD4Digest(MD4Digest t)
Copy constructor.

Method Summary

int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
String	getAlgorithmName() return the algorithm name
int	getDigestSize() return the size, in bytes, of the digest produced by this message digest.
protected void	processBlock()
protected void	processLength(long bitLength)
protected void	processWord(byte[] in, int inOff)
void	reset() reset the chaining variables to the IV values.

Methods inherited from class org.apache.geronimo.util.crypto.digests.GeneralDigest

finish, getByteLength, update, update

Methods inherited from class java.lang.Object

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

Constructor Detail

MD4Digest

public MD4Digest()

Standard constructor

MD4Digest

public MD4Digest(MD4Digest t)

Copy constructor. This will copy the state of the provided message digest.

Method Detail

getAlgorithmName

public String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

Returns:

the algorithm name

getDigestSize

public int getDigestSize()

Description copied from interface: Digest

return the size, in bytes, of the digest produced by this message digest.

Returns:

the size, in bytes, of the digest produced by this message digest.

processWord

protected void processWord(byte[] in,
                           int inOff)

Specified by:

processWord in class GeneralDigest

processLength

protected void processLength(long bitLength)

Specified by:

processLength in class GeneralDigest

doFinal

public int doFinal(byte[] out,
                   int outOff)

Description copied from interface: Digest

close the digest, producing the final digest value. The doFinal call leaves the digest reset.

Parameters:

out - the array the digest is to be copied into.

outOff - the offset into the out array the digest is to start at.

reset

public void reset()

reset the chaining variables to the IV values.

Specified by:

reset in interface Digest

Overrides:

reset in class GeneralDigest

processBlock

protected void processBlock()

Specified by:

processBlock in class GeneralDigest