1 /* DHPrivateKey.java -- A Diffie-Hellman private key. 2 Copyright (C) 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package javax.crypto.interfaces; 40 41 import java.math.BigInteger; 42 import java.security.PrivateKey; 43 44 /** 45 * This interface marks a private key in the Diffie-Hellman key exchange 46 * algorithm. It should be treated with as much care as any {@link 47 * java.security.PrivateKey}. 48 * 49 * <p>Implementations of Diffie-Hellman private keys should implement 50 * this interface. Applications that know a particular key is a 51 * Diffie-Hellman private key can safely cast it to this interface. 52 * 53 * @author Casey Marshall (csm@gnu.org) 54 * @since 1.4 55 * @see DHKey 56 * @see DHPublicKey 57 */ 58 public interface DHPrivateKey extends DHKey, PrivateKey 59 { 60 /** Compatible with JDK1.4. */ 61 long serialVersionUID = 2211791113380396553L; 62 63 /** 64 * Returns the private value <i>x</i>. 65 * 66 * @return The private value <i>x</i>. 67 */ getX()68 BigInteger getX(); 69 } 70