001    /* DSAPublicKeySpec.java --- DSA Public Key Specificaton class
002       Copyright (C) 1999, 2004 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010     
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    
039    package java.security.spec;
040    import java.math.BigInteger;
041    
042    /**
043            DSA Public Key class Specification. Used to maintain the DSA
044            Public Keys.
045    
046            @since JDK 1.2
047    
048            @author Mark Benvenuto
049    */
050    public class DSAPublicKeySpec implements KeySpec 
051    {
052      private BigInteger y = null;
053      private BigInteger p = null;
054      private BigInteger q = null;
055      private BigInteger g = null;
056    
057      /**
058         Constructs a new DSAPublicKeySpec with the specified y, p, q, and g.
059    
060         @param y the public key
061         @param p the prime
062         @param q the sub-prime
063         @param g the base
064      */
065      public DSAPublicKeySpec(BigInteger y, BigInteger p, BigInteger q, BigInteger g) 
066      {
067        this.y = y;
068        this.p = p;
069        this.q = q;
070        this.g = g;
071      }
072    
073      /**
074         Returns public key y for the DSA algorithm.
075    
076         @return Returns the requested BigInteger
077      */
078      public BigInteger getY() 
079      {
080        return this.y;
081      }
082    
083      /**
084         Returns p for the DSA algorithm.
085    
086         @return Returns the requested BigInteger
087      */
088      public BigInteger getP() 
089      {
090        return this.p;
091      }
092    
093      /**
094         Returns p for the DSA algorithm.
095    
096         @return Returns the requested BigInteger
097      */
098      public BigInteger getQ() 
099      {
100        return this.q;
101      }
102    
103      /**
104         Returns g for the DSA algorithm.
105    
106         @return Returns the requested BigInteger
107      */
108      public BigInteger getG() 
109      {
110        return this.g;
111      }
112    
113    }