1 /*
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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
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24  */
25 
26 package sun.security.x509;
27 
28 import java.io.IOException;
29 import java.io.OutputStream;
30 import java.math.BigInteger;
31 import java.util.Enumeration;
32 
33 import sun.security.util.*;
34 
35 /**
36  * Represents the Delta CRL Indicator Extension.
37  *
38  * <p>
39  * The extension identifies a CRL as being a delta CRL.
40  * Delta CRLs contain updates to revocation information previously distributed,
41  * rather than all the information that would appear in a complete CRL.
42  * The extension contains a CRL number that identifies the CRL, complete for a
43  * given scope, that was used as the starting point in the generation of
44  * this delta CRL.
45  *
46  * <p>
47  * The extension is defined in Section 5.2.4 of
48  * <a href="http://www.ietf.org/rfc/rfc3280.txt">Internet X.509 PKI Certific
49 ate and Certificate Revocation List (CRL) Profile</a>.
50  *
51  * <p>
52  * Its ASN.1 definition is as follows:
53  * <pre>
54  *     id-ce-deltaCRLIndicator OBJECT IDENTIFIER ::= { id-ce 27 }
55  *
56  *     BaseCRLNumber ::= CRLNumber
57  *     CRLNumber ::= INTEGER (0..MAX)
58  * </pre>
59  *
60  * @since 1.6
61  */
62 public class DeltaCRLIndicatorExtension extends CRLNumberExtension {
63 
64     /**
65      * Attribute name.
66      */
67     public static final String NAME = "DeltaCRLIndicator";
68 
69     private static final String LABEL = "Base CRL Number";
70 
71     /**
72      * Creates a delta CRL indicator extension with the integer value .
73      * The criticality is set to true.
74      *
75      * @param crlNum the value to be set for the extension.
76      */
DeltaCRLIndicatorExtension(int crlNum)77     public DeltaCRLIndicatorExtension(int crlNum) throws IOException {
78         super(PKIXExtensions.DeltaCRLIndicator_Id, true,
79             BigInteger.valueOf(crlNum), NAME, LABEL);
80     }
81 
82     /**
83      * Creates a delta CRL indictor extension with the BigInteger value .
84      * The criticality is set to true.
85      *
86      * @param crlNum the value to be set for the extension.
87      */
DeltaCRLIndicatorExtension(BigInteger crlNum)88     public DeltaCRLIndicatorExtension(BigInteger crlNum) throws IOException {
89         super(PKIXExtensions.DeltaCRLIndicator_Id, true, crlNum, NAME, LABEL);
90     }
91 
92     /**
93      * Creates the extension from the passed DER encoded value of the same.
94      *
95      * @param critical true if the extension is to be treated as critical.
96      * @param value an array of DER encoded bytes of the actual value.
97      * @exception ClassCastException if value is not an array of bytes
98      * @exception IOException on decoding error.
99      */
DeltaCRLIndicatorExtension(Boolean critical, Object value)100     public DeltaCRLIndicatorExtension(Boolean critical, Object value)
101     throws IOException {
102         super(PKIXExtensions.DeltaCRLIndicator_Id, critical.booleanValue(),
103             value, NAME, LABEL);
104     }
105 
106     /**
107      * Writes the extension to the DerOutputStream.
108      *
109      * @param out the DerOutputStream to write the extension to.
110      * @exception IOException on encoding errors.
111      */
encode(OutputStream out)112     public void encode(OutputStream out) throws IOException {
113        DerOutputStream  tmp = new DerOutputStream();
114         super.encode(out, PKIXExtensions.DeltaCRLIndicator_Id, true);
115     }
116 }
117