using System;

using System.Security.Cryptography;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        int env = 21;

        string a = GetMD5Hash("382020ENV" + env);

        Console.WriteLine(a);

    }

    static string GetMD5Hash(string input)

    {

        using (MD5 md5Hash = MD5.Create())

        {

            byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));

            StringBuilder sBuilder = new StringBuilder();

            for (int i = 0; i < (data.Length); i++)

            {

                sBuilder.Append(data[i].ToString("x2"));

            }

            return sBuilder.ToString();

        }

    }

}