libjava/java/security/cert/CertificateFactorySpi.java

   1 /* CertificateFactorySpi.java --- Certificate Factory Class
   2    Copyright (C) 1999,2003 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.security.cert;
  40
  41 import java.io.InputStream;
  42
  43 import java.util.Collection;
  44 import java.util.Iterator;
  45 import java.util.List;
  46
  47 /**
  48    CertificateFactorySpi is the abstract class Service Provider
  49    Interface (SPI) for the CertificateFactory class. A provider
  50    must implement all the abstract methods if they wish to
  51    supply a certificate factory for a particular certificate
  52    type. Ex: X.509
  53
  54    Certificate factories are used to generate certificates and
  55    certificate revocation lists (CRL) from their encoding.
  56
  57    @since JDK 1.2
  58
  59    @author Mark Benvenuto
  60  */
  61 public abstract class CertificateFactorySpi
  62 {
  63
  64   // Constructor.
  65   // ------------------------------------------------------------------------
  66
  67   /**
  68    * Constructs a new CertificateFactorySpi
  69    */
  70   public CertificateFactorySpi()
  71   {}
  72
  73   // Abstract methods.
  74   // ------------------------------------------------------------------------
  75
  76   /**
  77      Generates a Certificate based on the encoded data read
  78      from the InputStream.
  79
  80      The input stream must contain only one certificate.
  81
  82      If there exists a specialized certificate class for the
  83      certificate format handled by the certificate factory
  84      then the return Ceritificate should be a typecast of it.
  85      Ex: A X.509 CertificateFactory should return X509Certificate.
  86
  87      For X.509 certificates, the certificate in inStream must be
  88      DER encoded and supplied in binary or printable (Base64)
  89      encoding. If the certificate is in Base64 encoding, it must be
  90      bounded by -----BEGIN CERTIFICATE-----, and
  91      -----END CERTIFICATE-----.
  92
  93      @param inStream an input stream containing the certificate data
  94
  95      @return a certificate initialized with InputStream data.
  96
  97      @throws CertificateException Certificate parsing error
  98   */
  99   public abstract Certificate engineGenerateCertificate(InputStream inStream)
 100     throws CertificateException;
 101
 102   /**
 103      Returns a collection of certificates that were read from the
 104      input stream. It may be empty, have only one, or have
 105      multiple certificates.
 106
 107      For a X.509 certificate factory, the stream may contain a
 108      single DER encoded certificate or a PKCS#7 certificate
 109      chain. This is a PKCS#7 <I>SignedData</I> object with the
 110      most significant field being <I>certificates</I>. If no
 111      CRLs are present, then an empty collection is returned.
 112
 113      @param inStream an input stream containing the certificates
 114
 115      @return a collection of certificates initialized with
 116      the InputStream data.
 117
 118      @throws CertificateException Certificate parsing error
 119   */
 120   public abstract Collection engineGenerateCertificates(InputStream inStream)
 121     throws CertificateException;
 122
 123   /**
 124      Generates a CRL based on the encoded data read
 125      from the InputStream.
 126
 127      The input stream must contain only one CRL.
 128
 129      If there exists a specialized CRL class for the
 130      CRL format handled by the certificate factory
 131      then the return CRL should be a typecast of it.
 132      Ex: A X.509 CertificateFactory should return X509CRL.
 133
 134      @param inStream an input stream containing the CRL data
 135
 136      @return a CRL initialized with InputStream data.
 137
 138      @throws CRLException CRL parsing error
 139   */
 140   public abstract CRL engineGenerateCRL(InputStream inStream)
 141     throws CRLException;
 142
 143   /**
 144      Generates CRLs based on the encoded data read
 145      from the InputStream.
 146
 147      For a X.509 certificate factory, the stream may contain a
 148      single DER encoded CRL or a PKCS#7 CRL set. This is a
 149      PKCS#7 <I>SignedData</I> object with the most significant
 150      field being <I>crls</I>. If no CRLs are present, then an
 151      empty collection is returned.
 152
 153      @param inStream an input stream containing the CRLs
 154
 155      @return a collection of CRLs initialized with
 156      the InputStream data.
 157
 158      @throws CRLException CRL parsing error
 159   */
 160   public abstract Collection engineGenerateCRLs(InputStream inStream)
 161     throws CRLException;
 162
 163   // 1.4 instance methods.
 164   // ------------------------------------------------------------------------
 165
 166   /**
 167    * Generate a {@link CertPath} and initialize it with data parsed from
 168    * the input stream. The default encoding of this factory is used.
 169    *
 170    * @param inStream The InputStream containing the CertPath data.
 171    * @return A CertPath initialized from the input stream data.
 172    * @throws CertificateException If an error occurs decoding the
 173    * CertPath.
 174    */
 175   public CertPath engineGenerateCertPath(InputStream inStream)
 176     throws CertificateException
 177   {
 178     throw new UnsupportedOperationException("not implemented");
 179   }
 180
 181   /**
 182    * Generate a {@link CertPath} and initialize it with data parsed from
 183    * the input stream, using the specified encoding.
 184    *
 185    * @param inStream The InputStream containing the CertPath data.
 186    * @param encoding The encoding of the InputStream data.
 187    * @return A CertPath initialized from the input stream data.
 188    * @throws CertificateException If an error occurs decoding the
 189    *   CertPath.
 190    */
 191   public CertPath engineGenerateCertPath(InputStream inStream, String encoding)
 192     throws CertificateException
 193   {
 194     throw new UnsupportedOperationException("not implemented");
 195   }
 196
 197   /**
 198    * Generate a {@link CertPath} and initialize it with the certificates
 199    * in the {@link java.util.List} argument.
 200    *
 201    * @param certificates The list of certificates with which to create
 202    *   the CertPath.
 203    * @return A CertPath initialized from the certificates.
 204    * @throws CertificateException If an error occurs generating the
 205    *   CertPath.
 206    */
 207   public CertPath engineGenerateCertPath(List certificates)
 208     throws CertificateException
 209   {
 210     throw new UnsupportedOperationException("not implemented");
 211   }
 212
 213   /**
 214    * Returns an Iterator of CertPath encodings supported by this
 215    * factory, with the default encoding first. The returned Iterator
 216    * cannot be modified.
 217    *
 218    * @return The Iterator of supported encodings.
 219    */
 220   public Iterator engineGetCertPathEncodings()
 221   {
 222     throw new UnsupportedOperationException("not implemented");
 223   }
 224 }
 225