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.
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24 */
25
26package java.security;
27
28/**
29 * A private key.
30 * The purpose of this interface is to group (and provide type safety
31 * for) all private key interfaces.
32 * <p>
33 * Note: The specialized private key interfaces extend this interface.
34 * See, for example, the {@code DSAPrivateKey} interface in
35 * {@link java.security.interfaces}.
36 * <p>
37 * Implementations should override the default {@code destroy} and
38 * {@code isDestroyed} methods from the
39 * {@link javax.security.auth.Destroyable} interface to enable
40 * sensitive key information to be destroyed, cleared, or in the case
41 * where such information is immutable, unreferenced.
42 * Finally, since {@code PrivateKey} is {@code Serializable}, implementations
43 * should also override
44 * {@link java.io.ObjectOutputStream#writeObject(java.lang.Object)}
45 * to prevent keys that have been destroyed from being serialized.
46 *
47 * @see Key
48 * @see PublicKey
49 * @see Certificate
50 * @see Signature#initVerify
51 * @see java.security.interfaces.DSAPrivateKey
52 * @see java.security.interfaces.RSAPrivateKey
53 * @see java.security.interfaces.RSAPrivateCrtKey
54 *
55 * @author Benjamin Renaud
56 * @author Josh Bloch
57 * @since 1.1
58 */
59
60public interface PrivateKey extends Key, javax.security.auth.Destroyable {
61
62    // Declare serialVersionUID to be compatible with JDK1.1
63    /**
64     * The class fingerprint that is set to indicate serialization
65     * compatibility with a previous version of the class.
66     */
67    static final long serialVersionUID = 6034044314589513430L;
68}
69