using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

            var secret = "Hello World";

            var hashAlg = HashAlgorithm.Create(HashAlgorithmName.SHA512.ToString());

            var hashBytes = hashAlg.ComputeHash(Encoding.UTF8.GetBytes(secret));

            var hashBase64 = Convert.ToBase64String(hashBytes);

            Console.WriteLine(hashBase64);

    }

}