/* TMMHParameterSpec.java --
Copyright (C) 2002, 2006 Free Software Foundation, Inc.
This file is a part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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your option) any later version.
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WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
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package gnu.javax.crypto.jce.spec;
import gnu.java.security.prng.IRandom;
import java.security.spec.AlgorithmParameterSpec;
/**
* This class represents the algorithm parameters for the Truncated
* Multi-Modular Hash function for use with JCE-derived instances of
* {@link gnu.javax.crypto.mac.TMMH16}.
* <p>
* This class is little more than a container for the key stream, tag length,
* and prefix parameters for the TMMH algorithm.
*/
public class TMMHParameterSpec
implements AlgorithmParameterSpec
{
/** The keystream. */
protected IRandom keystream;
/** The tag length. */
protected Integer tagLength;
/** The prefix. */
protected byte[] prefix;
/**
* Create a new parameter specification.
*
* @param keystream The (PRNG) key stream.
* @param tagLength The tag length.
* @param prefix The prefix.
*/
public TMMHParameterSpec(IRandom keystream, Integer tagLength, byte[] prefix)
{
this.keystream = keystream;
this.tagLength = tagLength;
this.prefix = prefix;
}
/**
* Create a new parameter specification with no prefix.
*
* @param keystream The (PRNG) key stream.
* @param tagLength The tag length.
*/
public TMMHParameterSpec(IRandom keystream, Integer tagLength)
{
this(keystream, tagLength, null);
}
/**
* Return the key stream this specification was initialized with.
*
* @return The key stream.
*/
public IRandom getKeystream()
{
return keystream;
}
/**
* Return the tag length this specification was initialized with.
*
* @return The tag length.
*/
public Integer getTagLength()
{
return tagLength;
}
/**
* Return the prefix, or <code>null</code> if no prefix was specified.
*
* @return The prefix.
*/
public byte[] getPrefix()
{
return prefix;
}
}