/* TMMH16Spi.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
executable, regardless of the license terms of these independent
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package gnu.javax.crypto.jce.mac;

import gnu.java.security.Registry;
import gnu.javax.crypto.mac.TMMH16;
import gnu.javax.crypto.jce.spec.TMMHParameterSpec;

import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;

/**
 * The implementation of the TMMH16 <i>Service Provider Interface</i>
 * (<b>SPI</b>) adapter.
 */
public final class TMMH16Spi
    extends MacAdapter
{
  public TMMH16Spi()
  {
    super(Registry.TMMH16);
  }

  protected void engineInit(Key key, AlgorithmParameterSpec params)
      throws InvalidKeyException, InvalidAlgorithmParameterException
  {
    if (! (params instanceof TMMHParameterSpec))
      throw new InvalidAlgorithmParameterException();
    TMMHParameterSpec spec = (TMMHParameterSpec) params;
    attributes.put(TMMH16.TAG_LENGTH, spec.getTagLength());
    attributes.put(TMMH16.KEYSTREAM, spec.getKeystream());
    attributes.put(TMMH16.PREFIX, spec.getPrefix());
    try
      {
        mac.reset();
        mac.init(attributes);
      }
    catch (IllegalArgumentException iae)
      {
        throw new InvalidAlgorithmParameterException(iae.getMessage());
      }
  }
}