3 namespace CoreFramework\Stream\Crypto;
6 * A null-encryption stream does not encrypt anything but can be used if e.e.
7 * mcrypt is not installed.
9 * @author Roland Haeder <webmaster@shipsimu.org>
11 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 Developer Team
12 * @license GNU GPL 3.0 or any newer version
13 * @link http://www.shipsimu.org
15 * This program is free software: you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation, either version 3 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program. If not, see <http://www.gnu.org/licenses/>.
28 class NullCryptoStream extends BaseStream implements EncryptableStream {
30 * Protected constructor
34 protected function __construct () {
35 // Call parent constructor
36 parent::__construct(__CLASS__);
40 * Creates an instance of this node class
42 * @return $streamInstance An instance of this node class
44 public static final function createNullCryptoStream () {
46 $streamInstance = new NullCryptoStream();
48 // Return the instance
49 return $streamInstance;
53 * Encrypt the string with fixed salt
55 * @param $str The unencrypted string
56 * @param $key Optional key, if none provided, a random key will be generated
57 * @return $encrypted Encrypted string
59 public function encryptStream ($str, $key = NULL) {
60 // Just handle it over
61 $encrypted = (string) $str;
68 * Decrypt the string with fixed salt
70 * @param $encrypted Encrypted string
71 * @return $str The unencrypted string
73 public function decryptStream ($encrypted) {
74 // Just handle it over
75 $str = (string) $encrypted;
82 * Streams the data and maybe does something to it
84 * @param $data The data (string mostly) to "stream"
85 * @return $data The data (string mostly) to "stream"
86 * @throws UnsupportedOperationException If this method is called (which is a mistake)
88 public function streamData ($data) {
89 self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('Unhandled ' . strlen($data) . ' bytes in this stream.');
90 throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);