Your IP : 216.73.216.168
<?php
/*
* @package mod_flipbookmaster - FlipBookMaster
* @version V1.0.4
* @created February 2017
* @author ExtensionBase
* @email support@extensionbase.com
* @website http://www.extensionbase.com
* @support Forum - http://www.extensionbase.com/forum.html
* @copyright Copyright (C) 2016 ExtensionBase. All rights reserved.
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
*/
// no direct access
defined('_JEXEC') or die('');
class ModFlipBookMasterHelper
{
public static function cryptoJsAesDecrypt($passphrase, $jsonString){
$jsondata = json_decode($jsonString, true);
try {
$salt = hex2bin($jsondata["s"]);
$iv = hex2bin($jsondata["iv"]);
} catch(Exception $e) { return null; }
$ct = base64_decode($jsondata["ct"]);
$concatedPassphrase = $passphrase.$salt;
$md5 = array();
$md5[0] = md5($concatedPassphrase, true);
$result = $md5[0];
for ($i = 1; $i < 3; $i++) {
$md5[$i] = md5($md5[$i - 1].$concatedPassphrase, true);
$result .= $md5[$i];
}
$key = substr($result, 0, 32);
$data = openssl_decrypt($ct, 'aes-256-cbc', $key, true, $iv);
return json_decode($data, true);
}
/**
* Encrypt value to a cryptojs compatiable json encoding string
*
* @param mixed $passphrase
* @param mixed $value
* @return string
*/
public static function cryptoJsAesEncrypt($passphrase, $value){
$salt = openssl_random_pseudo_bytes(8);
$salted = '';
$dx = '';
while (strlen($salted) < 48) {
$dx = md5($dx.$passphrase.$salt, true);
$salted .= $dx;
}
$key = substr($salted, 0, 32);
$iv = substr($salted, 32,16);
$encrypted_data = openssl_encrypt(json_encode($value), 'aes-256-cbc', $key, true, $iv);
$data = array("ct" => base64_encode($encrypted_data), "iv" => bin2hex($iv), "s" => bin2hex($salt));
return json_encode($data);
}
public static function randomPassword($len) {
$alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890@:?\/[]{}+_-';
$pass = array(); //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; // put the length -1 in cache
for ($i = 0; $i < $len; $i++) {
$n = rand(0, $alphaLength);
$pass[] = $alphabet[$n];
}
return implode($pass); //turn the array into a string
}
}