using System;

using System.Security.Cryptography;

using System.Text;              

​

​

public class Program

{

    private const string _constHashDefaultSalt = "Hy#q£x8l";

    public static void Main()

    {

        Console.WriteLine(CreateSha512Hash("v-richguion@microsoft.com"));

    }

    public static string CreateSha512Hash(string input, bool applyStandardFormat = true, bool addSalt = true)

    {

        var stringToHash = input;

​

        if (applyStandardFormat)

            stringToHash = stringToHash.ToLower().Trim();

        if (addSalt)

            stringToHash = $"{_constHashDefaultSalt}{stringToHash}";

​

        using (var hashAlgorithm = SHA512.Create())

        {

            var byteValue = Encoding.UTF8.GetBytes(stringToHash);

            var byteHash = hashAlgorithm.ComputeHash(byteValue);

            return Convert.ToBase64String(byteHash);

        }

    }

}