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package gnu.crypto.jce.spec;

// --------------------------------------------------------------------------
// $Id: TMMHParameterSpec.java,v 1.1 2002/11/11 23:06:20 rsdio Exp $
//
// Copyright (C) 2002 Free Software Foundation, Inc.
//
// This file is part of GNU Crypto.
//
// GNU Crypto is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or (at
// your option) any later version.
//
// GNU Crypto is distributed in the hope that it will be useful, but
// 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.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the
//
//    Free Software Foundation, Inc.,
//    59 Temple Place, Suite 330,
//    Boston, MA  02111-1307
//    USA
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library.  Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.
//
// As a special exception, the copyright holders of this library give
// you permission to link this library with independent modules to
// produce an executable, regardless of the license terms of these
// independent modules, and to copy and distribute the resulting
// executable under terms of your choice, provided that you also meet,
// for each linked independent module, the terms and conditions of the
// license of that module.  An independent module is a module which is
// not derived from or based on this library.  If you modify this
// library, you may extend this exception to your version of the
// library, but you are not obligated to do so.  If you do not wish to
// do so, delete this exception statement from your version.
//
// --------------------------------------------------------------------------

import gnu.crypto.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.crypto.mac.TMMH16}.
 *
 * 

This class is little more than a container for the key stream, tag * length, and prefix parameters for the TMMH algorithm. * * @version $Revision: 1.1 $ */ public class TMMHParameterSpec implements AlgorithmParameterSpec { // Constants and variables. // ----------------------------------------------------------------------- /** The keystream. */ protected IRandom keystream; /** The tag length. */ protected Integer tagLength; /** The prefix. */ protected byte[] prefix; // Constructors. // ----------------------------------------------------------------------- /** * 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); } // Instance methods. // ----------------------------------------------------------------------- /** * 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 null if no prefix was * specified. * * @return The prefix. */ public byte[] getPrefix() { return prefix; } }





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