using System;

using System.Text;

using System.Security.Cryptography;

​

public class Program

{

    public static void Main()

    {

        string token = "secret=secretkey, id=16353, email=florentina.bacioi@fintechos.com, timeStamp=02192020,";

        var sha256 = ComputeSha256Hash(token);

        var tokenToBeComparedWith  = ComputeSha256Hash(token);

        Console.WriteLine("Token : " + token);

        //Console.WriteLine("Encoded Token : " + sha256);

        Console.WriteLine("Final encoded token: " + tokenToBeComparedWith);

    }

    static string ComputeSha256Hash(string rawData)  

        {

            SHA256 sha256 = SHA256.Create();

            byte[] bytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(rawData));

            string generatedToken = Convert.ToBase64String(bytes);

            return GetHashSha256(generatedToken).ToUpper();

        }

​

     static public string GetHashSha256(string text)

        {

            byte[] bytes = Encoding.ASCII.GetBytes(text);

            SHA256Managed hashstring = new SHA256Managed();

            byte[] hash = hashstring.ComputeHash(bytes);

            string hashString = string.Empty;

​

            foreach (byte x in hash)

                hashString += String.Format("{0:x2}", x);

​

            return hashString;

        }

}