01: /*
02: * @(#)CRL.java 1.15 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27:
28: package java.security.cert;
29:
30: /**
31: * This class is an abstraction of certificate revocation lists (CRLs) that
32: * have different formats but important common uses. For example, all CRLs
33: * share the functionality of listing revoked certificates, and can be queried
34: * on whether or not they list a given certificate.
35: * <p>
36: * Specialized CRL types can be defined by subclassing off of this abstract
37: * class.
38: *
39: * @author Hemma Prafullchandra
40: *
41: * @version 1.9, 02/02/00
42: *
43: * @see X509CRL
44: * @see CertificateFactory
45: *
46: * @since 1.2
47: */
48:
49: public abstract class CRL {
50:
51: // the CRL type
52: private String type;
53:
54: /**
55: * Creates a CRL of the specified type.
56: *
57: * @param type the standard name of the CRL type.
58: * See Appendix A in the <a href=
59: * "../../../../guide/security/CryptoSpec.html#AppA">
60: * Java Cryptography Architecture API Specification & Reference </a>
61: * for information about standard CRL types.
62: */
63: protected CRL(String type) {
64: this .type = type;
65: }
66:
67: /**
68: * Returns the type of this CRL.
69: *
70: * @return the type of this CRL.
71: */
72: public final String getType() {
73: return this .type;
74: }
75:
76: /**
77: * Returns a string representation of this CRL.
78: *
79: * @return a string representation of this CRL.
80: */
81: public abstract String toString();
82:
83: /**
84: * Checks whether the given certificate is on this CRL.
85: *
86: * @param cert the certificate to check for.
87: * @return true if the given certificate is on this CRL,
88: * false otherwise.
89: */
90: public abstract boolean isRevoked(Certificate cert);
91: }
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