1/*
2 * Copyright (c) 2005, 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 sun.security.x509;
27
28import java.io.IOException;
29import java.io.OutputStream;
30import java.math.BigInteger;
31import java.util.Enumeration;
32import java.util.List;
33
34import sun.security.util.*;
35
36/**
37 * Represents the Freshest CRL Extension.
38 *
39 * <p>
40 * The extension identifies how delta CRL information for a
41 * complete CRL is obtained.
42 *
43 * <p>
44 * The extension is defined in Section 5.2.6 of
45 * <a href="http://www.ietf.org/rfc/rfc3280.txt">Internet X.509 PKI Certific
46ate and Certificate Revocation List (CRL) Profile</a>.
47 *
48 * <p>
49 * Its ASN.1 definition is as follows:
50 * <pre>
51 *     id-ce-freshestCRL OBJECT IDENTIFIER ::=  { id-ce 46 }
52 *
53 *     FreshestCRL ::= CRLDistributionPoints
54 * </pre>
55 *
56 * @since 1.6
57 */
58public class FreshestCRLExtension extends CRLDistributionPointsExtension {
59
60    /**
61     * Attribute name.
62     */
63    public static final String NAME = "FreshestCRL";
64
65    /**
66     * Creates a freshest CRL extension.
67     * The criticality is set to false.
68     *
69     * @param distributionPoints the list of delta CRL distribution points.
70     */
71    public FreshestCRLExtension(List<DistributionPoint> distributionPoints)
72        throws IOException {
73
74        super(PKIXExtensions.FreshestCRL_Id, false, distributionPoints, NAME);
75    }
76
77    /**
78     * Creates the extension from the passed DER encoded value of the same.
79     *
80     * @param critical true if the extension is to be treated as critical.
81     * @param value an array of DER encoded bytes of the actual value.
82     * @exception IOException on decoding error.
83     */
84    public FreshestCRLExtension(Boolean critical, Object value)
85    throws IOException {
86        super(PKIXExtensions.FreshestCRL_Id, critical.booleanValue(), value,
87            NAME);
88    }
89
90    /**
91     * Writes the extension to the DerOutputStream.
92     *
93     * @param out the DerOutputStream to write the extension to.
94     * @exception IOException on encoding errors.
95     */
96    public void encode(OutputStream out) throws IOException {
97        super.encode(out, PKIXExtensions.FreshestCRL_Id, false);
98    }
99}
100