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-rw-r--r--system/libraries/Encrypt.php107
1 files changed, 28 insertions, 79 deletions
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index c2cb808dd..e297576e6 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -18,7 +18,7 @@
*
* @package CodeIgniter
* @author EllisLab Dev Team
- * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
@@ -40,22 +40,19 @@
*/
class CI_Encrypt {
- var $CI;
- var $encryption_key = '';
- var $_hash_type = 'sha1';
- var $_mcrypt_exists = FALSE;
- var $_mcrypt_cipher;
- var $_mcrypt_mode;
+ public $encryption_key = '';
+ protected $_hash_type = 'sha1';
+ protected $_mcrypt_exists = FALSE;
+ protected $_mcrypt_cipher;
+ protected $_mcrypt_mode;
/**
* Constructor
*
* Simply determines whether the mcrypt library exists.
- *
*/
public function __construct()
{
- $this->CI =& get_instance();
$this->_mcrypt_exists = ( ! function_exists('mcrypt_encrypt')) ? FALSE : TRUE;
log_message('debug', "Encrypt Class Initialized");
}
@@ -68,11 +65,10 @@ class CI_Encrypt {
* Returns it as MD5 in order to have an exact-length 128 bit key.
* Mcrypt is sensitive to keys that are not the correct length
*
- * @access public
* @param string
* @return string
*/
- function get_key($key = '')
+ public function get_key($key = '')
{
if ($key == '')
{
@@ -84,7 +80,7 @@ class CI_Encrypt {
$CI =& get_instance();
$key = $CI->config->item('encryption_key');
- if ($key == FALSE)
+ if ($key === FALSE)
{
show_error('In order to use the encryption class requires that you set an encryption key in your config file.');
}
@@ -98,13 +94,13 @@ class CI_Encrypt {
/**
* Set the encryption key
*
- * @access public
* @param string
* @return void
*/
- function set_key($key = '')
+ public function set_key($key = '')
{
$this->encryption_key = $key;
+ return $this;
}
// --------------------------------------------------------------------
@@ -120,12 +116,11 @@ class CI_Encrypt {
* that is randomized with each call to this function,
* even if the supplied message and key are the same.
*
- * @access public
* @param string the string to encode
* @param string the key
* @return string
*/
- function encode($string, $key = '')
+ public function encode($string, $key = '')
{
$key = $this->get_key($key);
@@ -148,12 +143,11 @@ class CI_Encrypt {
*
* Reverses the above process
*
- * @access public
* @param string
* @param string
* @return string
*/
- function decode($string, $key = '')
+ public function decode($string, $key = '')
{
$key = $this->get_key($key);
@@ -191,13 +185,12 @@ class CI_Encrypt {
*
* For more details, see http://codeigniter.com/user_guide/installation/upgrade_200.html#encryption
*
- * @access public
* @param string
* @param int (mcrypt mode constant)
* @param string
* @return string
*/
- function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
+ public function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
{
if ($this->_mcrypt_exists === FALSE)
{
@@ -242,12 +235,11 @@ class CI_Encrypt {
* Takes a plain-text string and key as input and generates an
* encoded bit-string using XOR
*
- * @access private
* @param string
* @param string
* @return string
*/
- function _xor_encode($string, $key)
+ protected function _xor_encode($string, $key)
{
$rand = '';
while (strlen($rand) < 32)
@@ -274,12 +266,11 @@ class CI_Encrypt {
* Takes an encoded string and key as input and generates the
* plain-text original message
*
- * @access private
* @param string
* @param string
* @return string
*/
- function _xor_decode($string, $key)
+ protected function _xor_decode($string, $key)
{
$string = $this->_xor_merge($string, $key);
@@ -299,12 +290,11 @@ class CI_Encrypt {
*
* Takes a string and key as input and computes the difference using XOR
*
- * @access private
* @param string
* @param string
* @return string
*/
- function _xor_merge($string, $key)
+ protected function _xor_merge($string, $key)
{
$hash = $this->hash($key);
$str = '';
@@ -321,12 +311,11 @@ class CI_Encrypt {
/**
* Encrypt using Mcrypt
*
- * @access public
* @param string
* @param string
* @return string
*/
- function mcrypt_encode($data, $key)
+ public function mcrypt_encode($data, $key)
{
$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
$init_vect = mcrypt_create_iv($init_size, MCRYPT_RAND);
@@ -338,12 +327,11 @@ class CI_Encrypt {
/**
* Decrypt using Mcrypt
*
- * @access public
* @param string
* @param string
* @return string
*/
- function mcrypt_decode($data, $key)
+ public function mcrypt_decode($data, $key)
{
$data = $this->_remove_cipher_noise($data, $key);
$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
@@ -365,14 +353,11 @@ class CI_Encrypt {
* against Man-in-the-middle attacks on CBC mode ciphers
* http://www.ciphersbyritter.com/GLOSSARY.HTM#IV
*
- * Function description
- *
- * @access private
* @param string
* @param string
* @return string
*/
- function _add_cipher_noise($data, $key)
+ protected function _add_cipher_noise($data, $key)
{
$keyhash = $this->hash($key);
$keylen = strlen($keyhash);
@@ -399,11 +384,10 @@ class CI_Encrypt {
*
* Function description
*
- * @access public
* @param type
* @return type
*/
- function _remove_cipher_noise($data, $key)
+ protected function _remove_cipher_noise($data, $key)
{
$keyhash = $this->hash($key);
$keylen = strlen($keyhash);
@@ -434,13 +418,13 @@ class CI_Encrypt {
/**
* Set the Mcrypt Cipher
*
- * @access public
* @param constant
* @return string
*/
- function set_cipher($cipher)
+ public function set_cipher($cipher)
{
$this->_mcrypt_cipher = $cipher;
+ return $this;
}
// --------------------------------------------------------------------
@@ -448,13 +432,13 @@ class CI_Encrypt {
/**
* Set the Mcrypt Mode
*
- * @access public
* @param constant
* @return string
*/
function set_mode($mode)
{
$this->_mcrypt_mode = $mode;
+ return $this;
}
// --------------------------------------------------------------------
@@ -462,10 +446,9 @@ class CI_Encrypt {
/**
* Get Mcrypt cipher Value
*
- * @access private
* @return string
*/
- function _get_cipher()
+ protected function _get_cipher()
{
if ($this->_mcrypt_cipher == '')
{
@@ -480,10 +463,9 @@ class CI_Encrypt {
/**
* Get Mcrypt Mode Value
*
- * @access private
* @return string
*/
- function _get_mode()
+ protected function _get_mode()
{
if ($this->_mcrypt_mode == '')
{
@@ -498,11 +480,10 @@ class CI_Encrypt {
/**
* Set the Hash type
*
- * @access public
* @param string
* @return string
*/
- function set_hash($type = 'sha1')
+ public function set_hash($type = 'sha1')
{
$this->_hash_type = ($type != 'sha1' AND $type != 'md5') ? 'sha1' : $type;
}
@@ -512,45 +493,13 @@ class CI_Encrypt {
/**
* Hash encode a string
*
- * @access public
* @param string
* @return string
*/
- function hash($str)
+ public function hash($str)
{
- return ($this->_hash_type == 'sha1') ? $this->sha1($str) : md5($str);
+ return ($this->_hash_type == 'sha1') ? sha1($str) : md5($str);
}
-
- // --------------------------------------------------------------------
-
- /**
- * Generate an SHA1 Hash
- *
- * @access public
- * @param string
- * @return string
- */
- function sha1($str)
- {
- if ( ! function_exists('sha1'))
- {
- if ( ! function_exists('mhash'))
- {
- require_once(BASEPATH.'libraries/Sha1.php');
- $SH = new CI_SHA;
- return $SH->generate($str);
- }
- else
- {
- return bin2hex(mhash(MHASH_SHA1, $str));
- }
- }
- else
- {
- return sha1($str);
- }
- }
-
}
// END CI_Encrypt class
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-10 15:26:56 +0100