001/* X509CRLEntry.java --- X.509 Certificate Revocation List Entry
002   Copyright (C) 1999 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package java.security.cert;
040
041import java.math.BigInteger;
042import 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*/
074public 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}