using System;

using System.Security.Cryptography;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine(CreateToken("xxxລ","xxx1"));

        // https://www.devglan.com/online-tools/hmac-sha256-online

    }

    public static string CreateToken(string message, string secret)

    {

      secret = secret ?? "";

      // var encoding = new System.Text.ASCIIEncoding();

        var encoding = new System.Text.UTF8Encoding();

      byte[] keyByte = encoding.GetBytes(secret);

      byte[] messageBytes = encoding.GetBytes(message);

      using (var hmacsha256 = new HMACSHA256(keyByte))

      {

        byte[] hashmessage = hmacsha256.ComputeHash(messageBytes);

        return Convert.ToBase64String(hashmessage);

      }

    }

}

​

​