1 /*
2 * Copyright 1998-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * 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
26 package java.security.cert;
27
28 /**
29 * This class is an abstraction of certificate revocation lists (CRLs) that
30 * have different formats but important common uses. For example, all CRLs
31 * share the functionality of listing revoked certificates, and can be queried
32 * on whether or not they list a given certificate.
33 * <p>
34 * Specialized CRL types can be defined by subclassing off of this abstract
35 * class.
36 *
37 * @author Hemma Prafullchandra
38 *
39 *
40 * @see X509CRL
41 * @see CertificateFactory
42 *
43 * @since 1.2
44 */
45
46 public abstract class CRL {
47
48 // the CRL type
49 private String type;
50
51 /**
52 * Creates a CRL of the specified type.
53 *
54 * @param type the standard name of the CRL type.
55 * See Appendix A in the <a href=
56 * "../../../../technotes/guides/security/crypto/CryptoSpec.html#AppA">
57 * Java Cryptography Architecture API Specification & Reference </a>
58 * for information about standard CRL types.
59 */
60 protected CRL(String type) {
61 this.type = type;
62 }
63
64 /**
65 * Returns the type of this CRL.
66 *
67 * @return the type of this CRL.
68 */
69 public final String getType() {
70 return this.type;
71 }
72
73 /**
74 * Returns a string representation of this CRL.
75 *
76 * @return a string representation of this CRL.
77 */
78 public abstract String toString();
79
80 /**
81 * Checks whether the given certificate is on this CRL.
82 *
83 * @param cert the certificate to check for.
84 * @return true if the given certificate is on this CRL,
85 * false otherwise.
86 */
87 public abstract boolean isRevoked(Certificate cert);
88 }
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