de.flexiprovider.core.md
Class NullDigest

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

public final class NullDigest

extends MessageDigest

This class only performs buffering of the input data. No message digest function is applied.

Author:

Ralf-Philipp Weinmann, Martin Döring

Constructor Summary

NullDigest()

Method Summary

byte[]	digest() Complete the hash computation by performing final operations such as padding.
int	getDigestLength() Get length of message digest.
void	reset() Reset message digest to its initial state.
void	update(byte b) Process the given byte.
void	update(byte[] input, int inOff, int inLen) Processes the given number of bytes, supplied in a byte array starting at the given position.

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

Constructor Detail

NullDigest

public NullDigest()

Method Detail

getDigestLength

public int getDigestLength()

Get length of message digest. This equals the amount of data accumulated thus far and thus is NOT a fixed value.

Overrides:

getDigestLength in class MessageDigest

Returns:

the length of the message digest

update

public void update(byte b)

Process the given byte.

Overrides:

update in class MessageDigest

Parameters:

b - the byte to be processed

update

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

Processes the given number of bytes, supplied in a byte array starting at the given position.

Overrides:

update in class MessageDigest

Parameters:

input - the byte array containing the input

inOff - the offset where the input starts

inLen - the length of the input

digest

public byte[] digest()

Description copied from class: MessageDigest

Complete the hash computation by performing final operations such as padding. Once MessageDigest.digest() has been called, the engine should be reset (see MessageDigest.reset()). Resetting is the responsibility of the engine implementor.

Overrides:

digest in class MessageDigest

Returns:

the computed digest value

reset

public void reset()

Reset message digest to its initial state.

Overrides:

reset in class MessageDigest