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  1. <?php
  2.  
  3. /**
  4.  * Extension
  5.  *
  6.  * PHP version 5
  7.  *
  8.  * @category  File
  9.  * @package   ASN1
  10.  * @author    Jim Wigginton <terrafrost@php.net>
  11.  * @copyright 2016 Jim Wigginton
  12.  * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
  13.  * @link      http://phpseclib.sourceforge.net
  14.  */
  15.  
  16. namespace phpseclib3\File\ASN1\Maps;
  17.  
  18. use phpseclib3\File\ASN1;
  19.  
  20. /**
  21.  * Extension
  22.  *
  23.  * A certificate using system MUST reject the certificate if it encounters
  24.  * a critical extension it does not recognize; however, a non-critical
  25.  * extension may be ignored if it is not recognized.
  26.  *
  27.  * http://tools.ietf.org/html/rfc5280#section-4.2
  28.  *
  29.  * @package ASN1
  30.  * @author  Jim Wigginton <terrafrost@php.net>
  31.  * @access  public
  32.  */
  33. abstract class Extension
  34. {
  35.     const MAP = [
  36.         'type' => ASN1::TYPE_SEQUENCE,
  37.         'children' => [
  38.             'extnId' => ['type' => ASN1::TYPE_OBJECT_IDENTIFIER],
  39.             'critical' => [
  40.                 'type' => ASN1::TYPE_BOOLEAN,
  41.                 'optional' => true,
  42.                 'default' => false
  43.             ],
  44.             'extnValue' => ['type' => ASN1::TYPE_OCTET_STRING]
  45.         ]
  46.     ];
  47. }
  48.