de.flexiprovider.core.md
Class DHA256

java.lang.Object
  |
  +--java.security.MessageDigestSpi
        |
        +--de.flexiprovider.api.MessageDigest
              |
              +--de.flexiprovider.core.md.DHA256

public class DHA256

extends MessageDigest

This is an implementaion of the DHA-256 Message digest DHA-256 is a 256-bit hash and is meant to provide 128 bits of security against collision attacks.

Author:

Paul Nguentcheu

Field Summary

static java.lang.String

ALG_NAME The algorithm name.

Constructor Summary

DHA256()
Default constructor

Method Summary

byte[]	digest() Complete the hash computation by performing final operations such as padding.
int	getDigestLength()
void	reset() Reset the digest objects to its initial state.
void	update(byte input) Update the digest using the specified byte.
void	update(byte[] input, int inOff, int inLen) Update the digest using the specified array of bytes, starting at the specified offset.

Methods inherited from class de.flexiprovider.api.MessageDigest

digest, digest, engineDigest, engineGetDigestLength, engineReset, engineUpdate, engineUpdate, update

Methods inherited from class java.security.MessageDigestSpi

clone, engineDigest

Methods inherited from class java.lang.Object

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

Field Detail

ALG_NAME

public static final java.lang.String ALG_NAME

The algorithm name.

Constructor Detail

DHA256

public DHA256()

Default constructor

Method Detail

getDigestLength

public int getDigestLength()

Overrides:

getDigestLength in class MessageDigest

Returns:

the digest length in bytes

update

public void update(byte[] input,
                   int inOff,
                   int inLen)

Update the digest using the specified array of bytes, starting at the specified offset.

Overrides:

update in class MessageDigest

Parameters:

input - the byte array to use for the update

inOff - the offset to start from in the byte array

inLen - the number of bytes to use

update

public void update(byte input)

Update the digest using the specified byte.

Overrides:

update in class MessageDigest

Parameters:

input - the byte to use for the update

digest

public byte[] digest()

Complete the hash computation by performing final operations such as padding.

Overrides:

digest in class MessageDigest

Returns:

the digest value

reset

public void reset()

Reset the digest objects to its initial state.

Overrides:

reset in class MessageDigest