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  1. <?php
  2.  
  3. /**
  4.  * PBKDF2params
  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.  * PBKDF2params
  22.  *
  23.  * from https://tools.ietf.org/html/rfc2898#appendix-A.3
  24.  *
  25.  * @package ASN1
  26.  * @author  Jim Wigginton <terrafrost@php.net>
  27.  * @access  public
  28.  */
  29. abstract class PBKDF2params
  30. {
  31.     const MAP = [
  32.         'type' => ASN1::TYPE_SEQUENCE,
  33.         'children' => [
  34.             // technically, this is a CHOICE in RFC2898 but the other "choice" is, currently, more of a placeholder
  35.             // in the RFC
  36.             'salt' => ['type' => ASN1::TYPE_OCTET_STRING],
  37.             'iterationCount' => ['type' => ASN1::TYPE_INTEGER],
  38.             'keyLength' => [
  39.                 'type' => ASN1::TYPE_INTEGER,
  40.                 'optional' => true
  41.             ],
  42.             'prf' => AlgorithmIdentifier::MAP + ['optional' => true]
  43.         ]
  44.     ];
  45. }
  46.