001/* DSAPublicKeySpec.java --- DSA Public Key Specificaton class
002   Copyright (C) 1999, 2004 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package java.security.spec;
040import 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*/
050public 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}