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   1  <?php
   2  
   3  /**
   4   * PKCS Formatted Key Handler
   5   *
   6   * PHP version 5
   7   *
   8   * @category  Crypt
   9   * @package   Common
  10   * @author    Jim Wigginton <[email protected]>
  11   * @copyright 2015 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\Crypt\Common\Formats\Keys;
  17  
  18  /**
  19   * PKCS1 Formatted Key Handler
  20   *
  21   * @package RSA
  22   * @author  Jim Wigginton <[email protected]>
  23   * @access  public
  24   */
  25  abstract class PKCS
  26  {
  27      /**
  28       * Auto-detect the format
  29       */
  30      const MODE_ANY = 0;
  31      /**
  32       * Require base64-encoded PEM's be supplied
  33       */
  34      const MODE_PEM = 1;
  35      /**
  36       * Require raw DER's be supplied
  37       */
  38      const MODE_DER = 2;
  39      /**#@-*/
  40  
  41      /**
  42       * Is the key a base-64 encoded PEM, DER or should it be auto-detected?
  43       *
  44       * @access private
  45       * @var int
  46       */
  47      protected static $format = self::MODE_ANY;
  48  
  49      /**
  50       * Require base64-encoded PEM's be supplied
  51       *
  52       * @access public
  53       */
  54      public static function requirePEM()
  55      {
  56          self::$format = self::MODE_PEM;
  57      }
  58  
  59      /**
  60       * Require raw DER's be supplied
  61       *
  62       * @access public
  63       */
  64      public static function requireDER()
  65      {
  66          self::$format = self::MODE_DER;
  67      }
  68  
  69      /**
  70       * Accept any format and auto detect the format
  71       *
  72       * This is the default setting
  73       *
  74       * @access public
  75       */
  76      public static function requireAny()
  77      {
  78          self::$format = self::MODE_ANY;
  79      }
  80  }