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      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 
     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 import java.util.List;
     33 
     34 import 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
     46 ate 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  */
     58 public 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