Deprecated function !!
mcrypt_encrypt(), mcrypt_decrypt(), mcrypt_create_iv()
สำหรับการแก้ไขก็คือ ใช้ฟังก์ชั่น openssl_encrypt() และ openssl_decrypt() แทนที่ฟังก์เดิมสร้างไฟล์ MY_Encrypt.php ไว้ที่ไดเรกทอรี่ application/libraries/MY_Encrypt.php
<?php
if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Override for solve deprecated function
* mcrypt_encrypt(), mcrypt_decrypt(), mcrypt_create_iv()
*/
class MY_Encrypt extends CI_Encrypt
{
public function __construct()
{
parent::__construct();
}
/**
* Encrypt using Mcrypt
*
* @param string
* @param string
* @return string
*/
public function mcrypt_encode($data, $key)
{
$init_size = openssl_cipher_iv_length($cipher="AES-128-CBC");
$init_vect = openssl_random_pseudo_bytes($init_size);
return $this->_add_cipher_noise($init_vect . openssl_encrypt($data, $cipher, $key, $options=OPENSSL_RAW_DATA, $init_vect), $key);
}
// --------------------------------------------------------------------
/**
* Decrypt using Mcrypt
*
* @param string
* @param string
* @return string
*/
public function mcrypt_decode($data, $key)
{
$data = $this->_remove_cipher_noise($data, $key);
$init_size = openssl_cipher_iv_length($cipher="AES-128-CBC");
if ($init_size > self::strlen($data))
{
return FALSE;
}
$init_vect = self::substr($data, 0, $init_size);
$data = self::substr($data, $init_size);
return rtrim(openssl_decrypt($data, $cipher, $key, $options=OPENSSL_RAW_DATA, $init_vect), "\0");
}
/**
* Byte-safe strlen()
*
* @param string $str
* @return int
*/
protected static function strlen($str)
{
return defined('MB_OVERLOAD_STRING')
? mb_strlen($str, '8bit')
: strlen($str);
}
// --------------------------------------------------------------------
/**
* Byte-safe substr()
*
* @param string $str
* @param int $start
* @param int $length
* @return string
*/
protected static function substr($str, $start, $length = NULL)
{
if (defined('MB_OVERLOAD_STRING'))
{
// mb_substr($str, $start, null, '8bit') returns an empty
// string on PHP 5.3
isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
return mb_substr($str, $start, $length, '8bit');
}
return isset($length)
? substr($str, $start, $length)
: substr($str, $start);
}
}