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 }