diff options
Diffstat (limited to 'system/libraries/Encrypt.php')
| -rw-r--r-- | system/libraries/Encrypt.php | 58 |
1 files changed, 47 insertions, 11 deletions
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php index 54b5bf737..cdb0a6452 100644 --- a/system/libraries/Encrypt.php +++ b/system/libraries/Encrypt.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -24,6 +24,7 @@ * @since Version 1.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Encryption Class @@ -38,12 +39,46 @@ */ class CI_Encrypt { + /** + * Reference to the user's encryption key + * + * @var string + */ public $encryption_key = ''; + + /** + * Type of hash operation + * + * @var string + */ protected $_hash_type = 'sha1'; + + /** + * Flag for the existance of mcrypt + * + * @var bool + */ protected $_mcrypt_exists = FALSE; + + /** + * Current cipher to be used with mcrypt + * + * @var string + */ protected $_mcrypt_cipher; + + /** + * Method for encrypting/decrypting data + * + * @var int + */ protected $_mcrypt_mode; + /** + * Initialize Encryption class + * + * @return void + */ public function __construct() { $this->_mcrypt_exists = function_exists('mcrypt_encrypt'); @@ -63,15 +98,14 @@ class CI_Encrypt { */ public function get_key($key = '') { - if ($key == '') + if ($key === '') { - if ($this->encryption_key != '') + if ($this->encryption_key !== '') { return $this->encryption_key; } - $CI =& get_instance(); - $key = $CI->config->item('encryption_key'); + $key = config_item('encryption_key'); if ($key === FALSE) { @@ -132,7 +166,7 @@ class CI_Encrypt { */ public function decode($string, $key = '') { - if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string)) + if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string) OR base64_encode(base64_decode($string)) !== $string) { return FALSE; } @@ -180,6 +214,7 @@ class CI_Encrypt { $dec = base64_decode($string); if (($dec = $this->mcrypt_decode($dec, $key)) === FALSE) { + $this->set_mode($current_mode); return FALSE; } @@ -349,7 +384,8 @@ class CI_Encrypt { * * Function description * - * @param string + * @param string $data + * @param string $key * @return string */ protected function _remove_cipher_noise($data, $key) @@ -414,7 +450,7 @@ class CI_Encrypt { */ protected function _get_cipher() { - if ($this->_mcrypt_cipher == '') + if ($this->_mcrypt_cipher === NULL) { return $this->_mcrypt_cipher = MCRYPT_RIJNDAEL_256; } @@ -431,7 +467,7 @@ class CI_Encrypt { */ protected function _get_mode() { - if ($this->_mcrypt_mode == '') + if ($this->_mcrypt_mode === NULL) { return $this->_mcrypt_mode = MCRYPT_MODE_CBC; } @@ -449,7 +485,7 @@ class CI_Encrypt { */ public function set_hash($type = 'sha1') { - $this->_hash_type = ($type !== 'sha1' && $type !== 'md5') ? 'sha1' : $type; + $this->_hash_type = in_array($type, hash_algos()) ? $type : 'sha1'; } // -------------------------------------------------------------------- @@ -462,7 +498,7 @@ class CI_Encrypt { */ public function hash($str) { - return ($this->_hash_type === 'sha1') ? sha1($str) : md5($str); + return hash($this->_hash_type, $str); } } |