using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

​

        using (var sha = SHA256.Create())

            {

                var bytes = Encoding.UTF8.GetBytes("3dab1c30-6d48-4ad2-b55c-045f8b1db83a");

                var hash = sha.ComputeHash(bytes);

​

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

            }

    }

}