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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   import java.math.BigInteger;
   28   
   29   /**
   30    * This immutable class specifies an elliptic curve private key with
   31    * its associated parameters.
   32    *
   33    * @see KeySpec
   34    * @see ECParameterSpec
   35    *
   36    * @author Valerie Peng
   37    *
   38    * @since 1.5
   39    */
   40   public class ECPrivateKeySpec implements KeySpec {
   41   
   42       private BigInteger s;
   43       private ECParameterSpec params;
   44   
   45       /**
   46        * Creates a new ECPrivateKeySpec with the specified
   47        * parameter values.
   48        * @param s the private value.
   49        * @param params the associated elliptic curve domain
   50        * parameters.
   51        * @exception NullPointerException if <code>s</code>
   52        * or <code>params</code> is null.
   53        */
   54       public ECPrivateKeySpec(BigInteger s, ECParameterSpec params) {
   55           if (s == null) {
   56               throw new NullPointerException("s is null");
   57           }
   58           if (params == null) {
   59               throw new NullPointerException("params is null");
   60           }
   61           this.s = s;
   62           this.params = params;
   63       }
   64   
   65       /**
   66        * Returns the private value S.
   67        * @return the private value S.
   68        */
   69       public BigInteger getS() {
   70           return s;
   71       }
   72   
   73       /**
   74        * Returns the associated elliptic curve domain
   75        * parameters.
   76        * @return the EC domain parameters.
   77        */
   78       public ECParameterSpec getParams() {
   79           return params;
   80       }
   81   }

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