1 /* 2 * Copyright (c) 2003, 2013, 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 package java.security.spec; 26 27 /** 28 * This immutable class specifies an elliptic curve public key with 29 * its associated parameters. 30 * 31 * @see KeySpec 32 * @see ECPoint 33 * @see ECParameterSpec 34 * 35 * @author Valerie Peng 36 * 37 * @since 1.5 38 */ 39 public class ECPublicKeySpec implements KeySpec { 40 41 private ECPoint w; 42 private ECParameterSpec params; 43 44 /** 45 * Creates a new ECPublicKeySpec with the specified 46 * parameter values. 47 * @param w the public point. 48 * @param params the associated elliptic curve domain 49 * parameters. 50 * @exception NullPointerException if {@code w} 51 * or {@code params} is null. 52 * @exception IllegalArgumentException if {@code w} 53 * is point at infinity, i.e. ECPoint.POINT_INFINITY 54 */ ECPublicKeySpec(ECPoint w, ECParameterSpec params)55 public ECPublicKeySpec(ECPoint w, ECParameterSpec params) { 56 if (w == null) { 57 throw new NullPointerException("w is null"); 58 } 59 if (params == null) { 60 throw new NullPointerException("params is null"); 61 } 62 if (w == ECPoint.POINT_INFINITY) { 63 throw new IllegalArgumentException("w is ECPoint.POINT_INFINITY"); 64 } 65 this.w = w; 66 this.params = params; 67 } 68 69 /** 70 * Returns the public point W. 71 * @return the public point W. 72 */ getW()73 public ECPoint getW() { 74 return w; 75 } 76 77 /** 78 * Returns the associated elliptic curve domain 79 * parameters. 80 * @return the EC domain parameters. 81 */ getParams()82 public ECParameterSpec getParams() { 83 return params; 84 } 85 } 86