Source for gnu.javax.net.ssl.provider.TruncatedHMAC

   1: /* TruncatedHMAC.java --
   2:    Copyright (C) 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.net.ssl.provider;
  40: 
  41: import gnu.javax.net.ssl.provider.Extension.Value;
  42: 
  43: import java.nio.ByteBuffer;
  44: 
  45: /**
  46:  * The value type for the {@link Extension.Type#TRUNCATED_HMAC} extension.
  47:  * This extension has an empty value; this class is thusly empty.
  48:  *
  49:  * @author csm
  50:  */
  51: public class TruncatedHMAC extends Value
  52: {
  53: 
  54:   public int length()
  55:   {
  56:     return 0;
  57:   }
  58: 
  59:   public ByteBuffer buffer()
  60:   {
  61:     return ByteBuffer.wrap(new byte[0]);
  62:   }
  63: 
  64:   public String toString()
  65:   {
  66:     return toString(null);
  67:   }
  68: 
  69:   public String toString(String prefix)
  70:   {
  71:     String s = "TruncatedHMAC;";
  72:     if (prefix != null)
  73:       s = prefix + s;
  74:     return s;
  75:   }
  76: }