de.flexiprovider.pqc.hbc.ots
Class MessageDigestWrapper

java.lang.Object
  |
  +--java.security.MessageDigestSpi
        |
        +--de.flexiprovider.api.MessageDigest
              |
              +--de.flexiprovider.pqc.hbc.ots.MessageDigestWrapper

public class MessageDigestWrapper

extends MessageDigest

Wraps the given message digest to realize a given output length

Author:

Sarah

Constructor Summary

MessageDigestWrapper(MessageDigest md, int length)

Method Summary

byte[]	digest() returns the message digest output cut to the desired byte-length
int	getDigestLength()
int	getLength()
void	reset() Reset the digest for further use.
void	setLength(int length)
void	update(byte input) Update the digest using the specified byte.
void	update(byte[] input, int offset, int len) 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

Constructor Detail

MessageDigestWrapper

public MessageDigestWrapper(MessageDigest md,
                            int length)

Method Detail

setLength

public void setLength(int length)

getLength

public int getLength()

digest

public byte[] digest()

returns the message digest output cut to the desired byte-length

Overrides:

digest in class MessageDigest

Following copied from class: de.flexiprovider.api.MessageDigest

Returns:

the array of bytes for the resulting hash value.

getDigestLength

public int getDigestLength()

Overrides:

getDigestLength in class MessageDigest

Following copied from class: de.flexiprovider.api.MessageDigest

Returns:

the digest length in bytes

reset

public void reset()

Description copied from class: MessageDigest

Reset the digest for further use.

Overrides:

reset in class MessageDigest

update

public void update(byte input)

Description copied from class: MessageDigest

Update the digest using the specified byte.

Overrides:

update in class MessageDigest

Following copied from class: de.flexiprovider.api.MessageDigest

Parameters:

input - the byte to use for the update

update

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

Description copied from class: MessageDigest

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

Overrides:

update in class MessageDigest

Following copied from class: de.flexiprovider.api.MessageDigest

Parameters:

input - the array of bytes to use for the update

offset - the offset to start from in the array of bytes

len - the number of bytes to use, starting at offset