Lime\App::encode PHP Method

    public function encode($data, $pwd, $base64encoded = false)
    {
        $key = [''];
        $box = [''];
        $cipher = '';
        $pwd_length = strlen($pwd);
        $data_length = strlen($data);
        for ($i = 0; $i < 256; $i++) {
            $key[$i] = ord($pwd[$i % $pwd_length]);
            $box[$i] = $i;
        }
        for ($j = $i = 0; $i < 256; $i++) {
            $j = ($j + $box[$i] + $key[$i]) % 256;
            $tmp = $box[$i];
            $box[$i] = $box[$j];
            $box[$j] = $tmp;
        }
        for ($a = $j = $i = 0; $i < $data_length; $i++) {
            $a = ($a + 1) % 256;
            $j = ($j + $box[$a]) % 256;
            $tmp = $box[$a];
            $box[$a] = $box[$j];
            $box[$j] = $tmp;
            $k = $box[($box[$a] + $box[$j]) % 256];
            $cipher .= chr(ord($data[$i]) ^ $k);
        }
        return $base64encoded ? base64_encode($cipher) : $cipher;
    }