paulgoughbooks_old
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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014-2017 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author CodeIgniter Dev Team * @copyright 2014-2017 British Columbia Institute of Technology (https://bcit.ca/) * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ namespace CodeIgniter\Encryption; use CodeIgniter\Config\BaseConfig; use CodeIgniter\Encryption\Exceptions\EncryptionException; /** * CodeIgniter Encryption Manager * * Provides two-way keyed encryption via PHP's Sodium and/or OpenSSL extensions. * This class determines the driver, cipher, and mode to use, and then * initializes the appropriate encryption handler. */ class Encryption { /** * The encrypter we create * * @var string */ protected $encrypter; /** * The driver being used */ protected $driver; /** * The key/seed being used */ protected $key; /** * The derived hmac key */ protected $hmacKey; /** * HMAC digest to use */ protected $digest = 'SHA512'; /** * Map of drivers to handler classes, in preference order * * @var array */ protected $drivers = [ 'OpenSSL', ]; // -------------------------------------------------------------------- /** * Class constructor * * @param BaseConfig $config Configuration parameters * @return void * * @throws \CodeIgniter\Encryption\Exceptions\EncryptionException */ public function __construct(BaseConfig $config = null) { if (empty($config)) { $config = new \Config\Encryption(); } $this->driver = $config->driver; $this->key = $config->key; // determine what is installed $this->handlers = [ 'OpenSSL' => extension_loaded('openssl'), ]; // if any aren't there, bomb if (in_array(false, $this->handlers)) { // this should never happen in travis-ci // @codeCoverageIgnoreStart throw EncryptionException::forNoHandlerAvailable($this->driver); // @codeCoverageIgnoreEnd } } /** * Initialize or re-initialize an encrypter * * @param BaseConfig $config Configuration parameters * @return \CodeIgniter\Encryption\EncrypterInterface * * @throws \CodeIgniter\Encryption\Exceptions\EncryptionException */ public function initialize(BaseConfig $config = null) { // override config? if (! empty($config)) { $this->driver = $config->driver; $this->key = $config->key; } // Insist on a driver if (empty($this->driver)) { throw EncryptionException::forNoDriverRequested(); } // Check for an unknown driver if (! in_array($this->driver, $this->drivers)) { throw EncryptionException::forUnKnownHandler($this->driver); } if (empty($this->key)) { throw EncryptionException::forNeedsStarterKey(); } // Derive a secret key for the encrypter $this->hmacKey = bin2hex(\hash_hkdf($this->digest, $this->key)); $handlerName = 'CodeIgniter\\Encryption\\Handlers\\' . $this->driver . 'Handler'; $this->encrypter = new $handlerName($config); return $this->encrypter; } // -------------------------------------------------------------------- /** * Create a random key * * @param integer $length Output length * @return string */ public static function createKey($length = 32) { return random_bytes($length); } // -------------------------------------------------------------------- /** * __get() magic, providing readonly access to some of our protected properties * * @param string $key Property name * @return mixed */ public function __get($key) { if (in_array($key, ['key', 'digest', 'driver', 'drivers'], true)) { return $this->{$key}; } return null; } /** * __isset() magic, providing checking for some of our protected properties * * @param string $key Property name * @return boolean */ public function __isset($key): bool { return in_array($key, ['key', 'digest', 'driver', 'drivers'], true); } } |
Commits for paulgoughbooks_old/trunk/system/Encryption/Encryption.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Tue 03 Nov, 2020 08:50:21 +0000 | Migration of Paul Goughs Books site to Codeignitor 4 |