Source for javax.crypto.spec.DHPublicKeySpec

   1: /* DHPublicKeySpec.java -- Wrapper for Diffie-Hellman public keys.
   2:    Copyright (C) 2004  Free Software Foundation, Inc.
   3: 
   4: This file is 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, or (at your option)
   9: 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; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 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 javax.crypto.spec;
  40: 
  41: import java.math.BigInteger;
  42: import java.security.spec.KeySpec;
  43: 
  44: /**
  45:  * A wrapper for Diffie-Hellman public key data.
  46:  *
  47:  * @author Casey Marshall (csm@gnu.org)
  48:  * @since 1.4
  49:  * @see DHPrivateKeySpec
  50:  */
  51: public class DHPublicKeySpec implements KeySpec
  52: {
  53: 
  54:   // Variables.
  55:   // ------------------------------------------------------------------------
  56: 
  57:   /** The base generator. */
  58:   private BigInteger g;
  59: 
  60:   /** The prime modulus. */
  61:   private BigInteger p;
  62: 
  63:   /** The public value. */
  64:   private BigInteger y;
  65: 
  66:   // Constructors.
  67:   // ------------------------------------------------------------------------
  68: 
  69:   /**
  70:    * Create a new Diffie-Hellman public key spec.
  71:    *
  72:    * @param y The public value.
  73:    * @param p The prime modulus.
  74:    * @param g The base generator.
  75:    */
  76:   public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g)
  77:   {
  78:     this.y = y;
  79:     this.p = p;
  80:     this.g = g;
  81:   }
  82: 
  83:   // Instance methods.
  84:   // ------------------------------------------------------------------------
  85: 
  86:   /**
  87:    * Get the base generator.
  88:    *
  89:    * @return The base generator.
  90:    */
  91:   public BigInteger getG()
  92:   {
  93:     return g;
  94:   }
  95: 
  96:   /**
  97:    * Get the prime modulus.
  98:    *
  99:    * @return The prime modulus.
 100:    */
 101:   public BigInteger getP()
 102:   {
 103:     return p;
 104:   }
 105: 
 106:   /**
 107:    * Get the public value.
 108:    *
 109:    * @return The public value.
 110:    */
 111:   public BigInteger getY()
 112:   {
 113:     return y;
 114:   }
 115: }