01 /*
02 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any 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 * @version 1.10, 05/05/07
38 *
39 * @since 1.5
40 */
41 public class ECPrivateKeySpec implements KeySpec {
42
43 private BigInteger s;
44 private ECParameterSpec params;
45
46 /**
47 * Creates a new ECPrivateKeySpec with the specified
48 * parameter values.
49 * @param s the private value.
50 * @param params the associated elliptic curve domain
51 * parameters.
52 * @exception NullPointerException if <code>s</code>
53 * or <code>params</code> is null.
54 */
55 public ECPrivateKeySpec(BigInteger s, ECParameterSpec params) {
56 if (s == null) {
57 throw new NullPointerException("s is null");
58 }
59 if (params == null) {
60 throw new NullPointerException("params is null");
61 }
62 this .s = s;
63 this .params = params;
64 }
65
66 /**
67 * Returns the private value S.
68 * @return the private value S.
69 */
70 public BigInteger getS() {
71 return s;
72 }
73
74 /**
75 * Returns the associated elliptic curve domain
76 * parameters.
77 * @return the EC domain parameters.
78 */
79 public ECParameterSpec getParams() {
80 return params;
81 }
82 }
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