/**
* Symmetric encryption
*
* @access public static
* @param string $text the text to encrypt
* @param string $key the private key (default Project Private key)
* @return string $decrypted the text decrypted
* @see SLS_Security::crypte
* @since 1.0
* @example
* $uncrypted = SLS_Security::getInstance()->decrypt("VyUA[..]UgCCA=");
* var_dump($uncrypted);
* // will produce : "sillysmart"
*/
public static function decrypt($text,$key="")
{
if ($key == "")
$key = SLS_Generic::getInstance()->getSiteConfig('privateKey');
$text = SLS_Security::generateKey(base64_decode($text),$key);
$decrypted = "";
for ($i=0;$i<strlen($text);$i++)
{
$md5 = substr($text,$i,1);
$i++;
$decrypted.= (substr($text,$i,1) ^ $md5);
}
return $decrypted;
}
