1/*
2 * Copyright (c) 1996, 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
26package java.security.interfaces;
27
28import java.math.BigInteger;
29
30/**
31 * Interface to a DSA-specific set of key parameters, which defines a
32 * DSA <em>key family</em>. DSA (Digital Signature Algorithm) is defined
33 * in NIST's FIPS-186.
34 *
35 * @see DSAKey
36 * @see java.security.Key
37 * @see java.security.Signature
38 *
39 * @author Benjamin Renaud
40 * @author Josh Bloch
41 * @since 1.1
42 */
43public interface DSAParams {
44
45    /**
46     * Returns the prime, {@code p}.
47     *
48     * @return the prime, {@code p}.
49     */
50    public BigInteger getP();
51
52    /**
53     * Returns the subprime, {@code q}.
54     *
55     * @return the subprime, {@code q}.
56     */
57    public BigInteger getQ();
58
59    /**
60     * Returns the base, {@code g}.
61     *
62     * @return the base, {@code g}.
63     */
64    public BigInteger getG();
65}
66