gnu.crypto.jce.spec

Class TMMHParameterSpec

Implemented Interfaces:
AlgorithmParameterSpec

public class TMMHParameterSpec
extends Object
implements 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 Integer
tagLength
The tag length.

Constructor Summary

TMMHParameterSpec(IRandom keystream, Integer tagLength)
Create a new parameter specification with no prefix.
TMMHParameterSpec(IRandom keystream, 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.
Integer
getTagLength()
Return the tag length this specification was initialized with.

Field Details

keystream

protected IRandom keystream
The keystream.

prefix

protected byte[] prefix
The prefix.

tagLength

protected Integer tagLength
The tag length.

Constructor Details

TMMHParameterSpec

public TMMHParameterSpec(IRandom keystream,
                         Integer tagLength)
Create a new parameter specification with no prefix.
Parameters:
keystream - The (PRNG) key stream.
tagLength - The tag length.

TMMHParameterSpec

public TMMHParameterSpec(IRandom keystream,
                         Integer tagLength,
                         byte[] prefix)
Create a new parameter specification.
Parameters:
keystream - The (PRNG) key stream.
tagLength - The tag length.
prefix - The prefix.

Method Details

getKeystream

public IRandom getKeystream()
Return the key stream this specification was initialized with.
Returns:
The key stream.

getPrefix

public byte[] getPrefix()
Return the prefix, or null if no prefix was specified.
Returns:
The prefix.

getTagLength

public Integer getTagLength()
Return the tag length this specification was initialized with.
Returns:
The tag length.

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