93 lines · 2.7 KB · Java
RawDownload
/* * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.crypto.spec; import java.math.BigInteger; /** * This class specifies a Diffie-Hellman public key with its associated * parameters. * * <p>Note that this class does not perform any validation on specified * parameters. Thus, the specified values are returned directly even * if they are null. * * @author Jan Luehe * * @see DHPrivateKeySpec * @since 1.4 */public class DHPublicKeySpec implements java.security.spec.KeySpec {     // The public value    private BigInteger y;     // The prime modulus    private BigInteger p;     // The base generator    private BigInteger g;     /**     * Constructor that takes a public value <code>y</code>, a prime     * modulus <code>p</code>, and a base generator <code>g</code>.     * @param y  public value y     * @param p  prime modulus p     * @param g  base generator g     */    public DHPublicKeySpec(BigInteger y, BigInteger p, BigInteger g) {        this.y = y;        this.p = p;        this.g = g;    }     /**     * Returns the public value <code>y</code>.     *     * @return the public value <code>y</code>     */    public BigInteger getY() {        return this.y;    }     /**     * Returns the prime modulus <code>p</code>.     *     * @return the prime modulus <code>p</code>     */    public BigInteger getP() {        return this.p;    }     /**     * Returns the base generator <code>g</code>.     *     * @return the base generator <code>g</code>     */    public BigInteger getG() {        return this.g;    }}