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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file returns an array of available public keys
  19   *
  20   * @package    mod_lti
  21   * @copyright  2019 Stephen Vickers
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  define('NO_DEBUG_DISPLAY', true);
  26  define('NO_MOODLE_COOKIES', true);
  27  
  28  require_once(__DIR__ . '/../../config.php');
  29  
  30  $jwks = array('keys' => array());
  31  
  32  $privatekey = get_config('mod_lti', 'privatekey');
  33  $res = openssl_pkey_get_private($privatekey);
  34  $details = openssl_pkey_get_details($res);
  35  
  36  $jwk = array();
  37  $jwk['kty'] = 'RSA';
  38  $jwk['alg'] = 'RS256';
  39  $jwk['kid'] = get_config('mod_lti', 'kid');
  40  $jwk['e'] = rtrim(strtr(base64_encode($details['rsa']['e']), '+/', '-_'), '=');
  41  $jwk['n'] = rtrim(strtr(base64_encode($details['rsa']['n']), '+/', '-_'), '=');
  42  $jwk['use'] = 'sig';
  43  
  44  $jwks['keys'][] = $jwk;
  45  
  46  @header('Content-Type: application/json; charset=utf-8');
  47  
  48  echo json_encode($jwks, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);