Source for gnu.javax.crypto.jce.mac.UMac32Spi

   1: /* UMac32Spi.java --
   2:    Copyright (C) 2002, 2006  Free Software Foundation, Inc.
   3: 
   4: This file is a part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2 of the License, or (at
   9: your option) any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; if not, write to the Free Software
  18: Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
  19: USA
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version.  */
  37: 
  38: 
  39: package gnu.javax.crypto.jce.mac;
  40: 
  41: import gnu.java.security.Registry;
  42: import gnu.javax.crypto.mac.UMac32;
  43: import gnu.javax.crypto.jce.spec.UMac32ParameterSpec;
  44: 
  45: import java.security.InvalidAlgorithmParameterException;
  46: import java.security.InvalidKeyException;
  47: import java.security.Key;
  48: import java.security.spec.AlgorithmParameterSpec;
  49: 
  50: /**
  51:  * The implementation of the UMAC-32 <i>Service Provider Interface</i>
  52:  * (<b>SPI</b>) adapter.
  53:  */
  54: public final class UMac32Spi
  55:     extends MacAdapter
  56: {
  57:   public UMac32Spi()
  58:   {
  59:     super(Registry.UMAC32);
  60:   }
  61: 
  62:   protected void engineInit(Key key, AlgorithmParameterSpec params)
  63:       throws InvalidKeyException, InvalidAlgorithmParameterException
  64:   {
  65:     if (! (params instanceof UMac32ParameterSpec))
  66:       throw new InvalidAlgorithmParameterException();
  67:     if (params != null)
  68:       attributes.put(UMac32.NONCE_MATERIAL,
  69:                      ((UMac32ParameterSpec) params).getNonce());
  70:     try
  71:       {
  72:         super.engineInit(key, null);
  73:       }
  74:     catch (IllegalArgumentException iae)
  75:       {
  76:         throw new InvalidAlgorithmParameterException(iae.getMessage());
  77:       }
  78:   }
  79: }