using System;

​

public class Program

{

    public static void Main()

    {

        //i'm expecting  L6^,L3^,LOOOO

        Console.WriteLine(EncodeParam("/MAC/JAC/222222222"));

        var encodeUTF8 = System.Text.Encoding.UTF8.GetBytes(EncodeParam("/MAC/JAC/222222222"));

        //the exmaple expects TDZeLEwzXixMG08bTxtPG08b                    

        Console.WriteLine(Convert.ToBase64String(encodeUTF8));

​

    }

​

    public static string EncodeParam(string paramValue)

    {

        var result = default (string);

​

        var startBytes =System.Text.ASCIIEncoding.ASCII.GetBytes(paramValue);

​

        foreach (var b in startBytes)

        {

            var encodedVal = b % 2 == 0 ? b - 23 : b + 29;

            //Console.WriteLine(b + " " + b % 2);

​

​

            result += (char)encodedVal;

        }

​

        return result;

    }

}