001    /* X509CRLEntry.java --- X.509 Certificate Revocation List Entry
002       Copyright (C) 1999 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    
039    package java.security.cert;
040    
041    import java.math.BigInteger;
042    import java.util.Date;
043    
044    /**
045            Abstract class for entries in the CRL (Certificate Revocation
046            List). The ASN.1 definition for <I>revokedCertificates</I> is
047    
048            revokedCertificates     SEQUENCE OF SEQUENCE  {
049                 userCertificate         CertificateSerialNumber,
050                 revocationDate          Time,
051                 crlEntryExtensions      Extensions OPTIONAL
052                                               -- if present, shall be v2
053                                      }  OPTIONAL,
054    
055            CertificateSerialNumber  ::=  INTEGER
056    
057            Time ::= CHOICE {
058                 utcTime        UTCTime,
059                 generalTime    GeneralizedTime }
060    
061            Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension
062    
063            Extension  ::=  SEQUENCE  {
064                 extnID      OBJECT IDENTIFIER,
065                 critical    BOOLEAN DEFAULT FALSE,
066                 extnValue   OCTET STRING  }
067    
068            For more information consult rfc2459.
069    
070            @author Mark Benvenuto
071    
072            @since JDK 1.2
073    */
074    public abstract class X509CRLEntry implements X509Extension
075    {
076    
077      /**
078         Creates a new X509CRLEntry
079      */
080      public X509CRLEntry()
081      {}
082    
083      /**
084         Compares this X509CRLEntry to other. It checks if the
085         object if instanceOf X509CRLEntry and then checks if
086         the encoded form( the inner SEQUENCE) matches.
087    
088         @param other An Object to test for equality
089    
090         @return true if equal, false otherwise
091      */
092      public boolean equals(Object other)
093      {
094        if( other instanceof X509CRLEntry ) {
095          try {
096            X509CRLEntry xe = (X509CRLEntry) other;
097            if( getEncoded().length != xe.getEncoded().length )
098              return false;
099    
100            byte[] b1 = getEncoded();
101            byte[] b2 = xe.getEncoded();
102    
103            for( int i = 0; i < b1.length; i++ )
104              if( b1[i] != b2[i] )
105                return false;
106    
107          } catch( CRLException crle ) {
108            return false;
109          }
110          return true;
111        }
112        return false;
113      }
114    
115      /**
116         Returns a hash code for this X509CRLEntry in its encoded
117         form.
118    
119         @return A hash code of this class
120      */
121      public int hashCode()
122      {
123        return super.hashCode();
124      }
125    
126      /**
127         Gets the DER ASN.1 encoded format for this CRL Entry,
128         the inner SEQUENCE.
129    
130         @return byte array containg encoded form
131    
132         @throws CRLException if an error occurs
133      */
134      public abstract byte[] getEncoded() throws CRLException;
135    
136      /**
137         Gets the serial number for <I>userCertificate</I> in
138         this X509CRLEntry.
139    
140         @return the serial number for this X509CRLEntry.
141      */
142      public abstract BigInteger getSerialNumber();
143    
144    
145      /**
146         Gets the revocation date in <I>revocationDate</I> for
147         this X509CRLEntry.
148    
149         @return the revocation date for this X509CRLEntry.
150      */
151      public abstract Date getRevocationDate();
152    
153    
154      /**
155         Checks if this X509CRLEntry has extensions.
156    
157         @return true if it has extensions, false otherwise
158      */
159      public abstract boolean hasExtensions();
160    
161    
162      /**
163         Returns a string that represents this X509CRLEntry.
164    
165         @return a string representing this X509CRLEntry.
166      */
167      public abstract String toString();
168    
169    }