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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [java/] [security/] [cert/] [X509Extension.java] - Rev 771

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/* X509Extension.java --- X.509 Extension
   Copyright (C) 1999 Free Software Foundation, Inc.
 
This file is part of GNU Classpath.
 
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
 
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
 
Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
 
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */
 
 
package java.security.cert;
import java.util.Set;
 
/**
        Public interface for the X.509 Extension.
 
        This is used for X.509 v3 Certificates and CRL v2 (Certificate
        Revocation Lists) for managing attributes assoicated with
        Certificates, for managing the hierarchy of certificates,
        and for managing the distribution of CRL. This extension
        format is used to define private extensions.
 
        Each extensions for a certificate or CRL must be marked
        either critical or non-critical. If the certificate/CRL
        system encounters a critical extension not recognized then
        it must reject the certificate. A non-critical extension
        may be just ignored if not recognized.
 
 
        The ASN.1 definition for this class is:
 
         Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension
 
         Extension  ::=  SEQUENCE  {
             extnId        OBJECT IDENTIFIER,
             critical      BOOLEAN DEFAULT FALSE,
             extnValue     OCTET STRING
                           -- contains a DER encoding of a value
                           -- of the type registered for use with
                           -- the extnId object identifier value
         }
 
        @author Mark Benvenuto
 
        @since 1.2
*/
public interface X509Extension
{
 
  /**
     Returns true if the certificate contains a critical extension
     that is not supported.
 
     @return true if has unsupported extension, false otherwise
  */
  boolean hasUnsupportedCriticalExtension();
 
  /**
     Returns a set of the CRITICAL extension OIDs from the
     certificate/CRL that the object implementing this interface
     manages.
 
     @return A Set containing the OIDs. If there are no CRITICAL
     extensions or extensions at all this returns null.
  */
  Set<String> getCriticalExtensionOIDs();
 
  /**
     Returns a set of the NON-CRITICAL extension OIDs from the
     certificate/CRL that the object implementing this interface
     manages.
 
     @return A Set containing the OIDs. If there are no NON-CRITICAL
     extensions or extensions at all this returns null.
  */
  Set<String> getNonCriticalExtensionOIDs();
 
  /**
     Returns the DER encoded OCTET string for the specified
     extension value identified by a OID. The OID is a string
     of number separated by periods. Ex: 12.23.45.67
  */
  byte[] getExtensionValue(String oid);
 
}
 

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