Encryption.php

<?php

namespace Config;

use CodeIgniter\Config\BaseConfig;

/**
 * Encryption configuration.
 *
 * These are the settings used for encryption, if you don't pass a parameter
 * array to the encrypter for creation/initialization.
 */
class Encryption extends BaseConfig
{
    /*
      |--------------------------------------------------------------------------
      | Encryption Key Starter
      |--------------------------------------------------------------------------
      |
      | If you use the Encryption class you must set an encryption key (seed).
      | You need to ensure it is long enough for the cipher and mode you plan to use.
      | See the user guide for more info.
     */

    public $key = '';

    /*
      |--------------------------------------------------------------------------
      | Encryption driver to use
      |--------------------------------------------------------------------------
      |
      | One of the supported drivers, eg 'OpenSSL' or 'Sodium'.
      | The default driver, if you don't specify one, is 'OpenSSL'.
     */
    public $driver = 'OpenSSL';
}