using System;

using System.Text;      

public class Program

{

    public static void Main()

    {

        var Email = "emil@vsgbg.com";

        var SupervisorPassCode = "2014332229";

        var DeviceId ="F30F5F4F-08E3-45D5-90AD-D02CEE062447";

        var hash = GetStringSha256HashWithDeviceId(string.Concat(Email.ToLower(), SupervisorPassCode, DeviceId), DeviceId);

        Console.WriteLine(hash);

    }

       public static string GetStringSha256HashWithDeviceId(string inputText, string deviceId)

        {

            string hashString;

            if (string.IsNullOrEmpty(inputText) || string.IsNullOrEmpty(deviceId))

                return string.Empty;

​

            using (var sha256 = new System.Security.Cryptography.SHA256Managed())

            {

                var data = Encoding.UTF8.GetBytes(inputText);

                var hash = sha256.ComputeHash(data);

                hashString = BitConverter.ToString(hash);

            }

​

            var resultAppended = new StringBuilder();

​

            if (string.IsNullOrEmpty(hashString))

                return string.Empty;

​

            var padIteration = 0;

            for (var i = 0; i < hashString.Length; i++)

            {

                if (hashString[i] == '-' && deviceId.Length > padIteration)

                {

                    resultAppended.Append(Convert.ToInt16(padIteration % 2 == 0 ? hashString[i - padIteration] : deviceId[padIteration]));

                    padIteration++;

                }

                else if (hashString[i] == '-')

                {

                    resultAppended.Append(Convert.ToInt16(padIteration % 2 == 0 ? hashString[i - padIteration] : 0));

                    padIteration++;

                }

                else

                    resultAppended.Append(hashString[i]);

            }

            return resultAppended.ToString();

        }

}