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    1   /*
    2    * Copyright (c) 2003, 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</code>
   51        * or <code>params</code> is null.
   52        * @exception IllegalArgumentException if <code>w</code>
   53        * is point at infinity, i.e. ECPoint.POINT_INFINITY
   54        */
   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        */
   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        */
   82       public ECParameterSpec getParams() {
   83           return params;
   84       }
   85   }

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