1 /* 2 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package javax.crypto.spec; 27 28 import java.math.BigInteger; 29 30 /** 31 * This class specifies a Diffie-Hellman public key with its associated 32 * parameters. 33 * 34 * <p>Note that this class does not perform any validation on specified 35 * parameters. Thus, the specified values are returned directly even 36 * if they are null. 37 * 38 * @author Jan Luehe 39 * 40 * @see DHPrivateKeySpec 41 * @since 1.4 42 */ 43 public class DHPublicKeySpec implements java.security.spec.KeySpec { 44 45 // The public value 46 private BigInteger y; 47 48 // The prime modulus 49 private BigInteger p; 50 51 // The base generator 52 private BigInteger g; 53 54 /** 55 * Constructor that takes a public value <code>y</code>, a prime 56 * modulus <code>p</code>, and a base generator <code>g</code>. 57 * @param y public value y 58 * @param p prime modulus p 59 * @param g base generator g 60 */ DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g)61 public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g) { 62 this.y = y; 63 this.p = p; 64 this.g = g; 65 } 66 67 /** 68 * Returns the public value <code>y</code>. 69 * 70 * @return the public value <code>y</code> 71 */ getY()72 public BigInteger getY() { 73 return this.y; 74 } 75 76 /** 77 * Returns the prime modulus <code>p</code>. 78 * 79 * @return the prime modulus <code>p</code> 80 */ getP()81 public BigInteger getP() { 82 return this.p; 83 } 84 85 /** 86 * Returns the base generator <code>g</code>. 87 * 88 * @return the base generator <code>g</code> 89 */ getG()90 public BigInteger getG() { 91 return this.g; 92 } 93 } 94