gnu.crypto.jce.spec
Class TMMHParameterSpec

java.lang.Object
  gnu.crypto.jce.spec.TMMHParameterSpec

All Implemented Interfaces:

java.security.spec.AlgorithmParameterSpec

public class TMMHParameterSpec

extends java.lang.Object

implements java.security.spec.AlgorithmParameterSpec

This class represents the algorithm parameters for the Truncated Multi-Modular Hash function for use with JCE-derived instances of TMMH16.

This class is little more than a container for the key stream, tag length, and prefix parameters for the TMMH algorithm.

Version:

$Revision: 1.2 $

Field Summary

protected IRandom	keystream The keystream.
protected byte[]	prefix The prefix.
protected java.lang.Integer	tagLength The tag length.

Constructor Summary

TMMHParameterSpec(IRandom keystream, java.lang.Integer tagLength)
Create a new parameter specification with no prefix.

TMMHParameterSpec(IRandom keystream, java.lang.Integer tagLength, byte[] prefix)
Create a new parameter specification.

Method Summary

IRandom	getKeystream() Return the key stream this specification was initialized with.
byte[]	getPrefix() Return the prefix, or null if no prefix was specified.
java.lang.Integer	getTagLength() Return the tag length this specification was initialized with.

Methods inherited from class java.lang.Object

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

Field Detail

keystream

protected IRandom keystream

The keystream.

tagLength

protected java.lang.Integer tagLength

The tag length.

prefix

protected byte[] prefix

The prefix.

Constructor Detail

TMMHParameterSpec

public TMMHParameterSpec(IRandom keystream,
                         java.lang.Integer tagLength,
                         byte[] prefix)

Create a new parameter specification.

Parameters:

keystream - The (PRNG) key stream.

tagLength - The tag length.

prefix - The prefix.

TMMHParameterSpec

public TMMHParameterSpec(IRandom keystream,
                         java.lang.Integer tagLength)

Create a new parameter specification with no prefix.

Parameters:

keystream - The (PRNG) key stream.

tagLength - The tag length.

Method Detail

getKeystream

public IRandom getKeystream()

Return the key stream this specification was initialized with.

Returns:

The key stream.

getTagLength

public java.lang.Integer getTagLength()

Return the tag length this specification was initialized with.

Returns:

The tag length.

getPrefix

public byte[] getPrefix()

Return the prefix, or null if no prefix was specified.

Returns:

The prefix.