<?php
defined("DUPXABSPATH") or die("");

/**
 * Class used to update and edit web server configuration files
 * for .htaccess, web.config and user.ini
 *
 * Standard: PSR-2
 * @link http://www.php-fig.org/psr/psr-2 Full Documentation
 *
 * @package SC\DUPX\Crypt
 *
 */
class DUPX_Crypt
{

	public static function encrypt($key, $string)
	{
		$result = '';
		for ($i = 0; $i < strlen($string); $i++) {
			$char	 = substr($string, $i, 1);
			$keychar = substr($key, ($i % strlen($key)) - 1, 1);
			$char	 = chr(ord($char) + ord($keychar));
			$result .= $char;
		}

		return urlencode(base64_encode($result));
	}

	public static function decrypt($key, $string)
	{
		$result	 = '';
		$string	 = urldecode($string);
		$string	 = base64_decode($string);

		for ($i = 0; $i < strlen($string); $i++) {
			$char	 = substr($string, $i, 1);
			$keychar = substr($key, ($i % strlen($key)) - 1, 1);
			$char	 = chr(ord($char) - ord($keychar));
			$result .= $char;
		}

		return $result;
	}

	public static function scramble($string)
	{
		return self::encrypt(self::sk1().self::sk2(), $string);
	}

	public static function unscramble($string)
	{
		return self::decrypt(self::sk1().self::sk2(), $string);
	}

	public static function sk1()
	{
		return 'fdas'.self::encrypt('abx', 'v1');
	}

	public static function sk2()
	{
		return 'fres'.self::encrypt('ad3x', 'v2');
	}
}