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 */
25package java.security.spec;
26
27import 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 */
40public 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}
52     * or {@code params} 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}
82