using System;

using System.Text;

using System.Security.Cryptography;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine(GenerateSHA256("test"));

    }

    public static string GenerateSHA256(string input)

    {

        var bytes = Encoding.Unicode.GetBytes(input);

        using (var hashEngine = SHA256.Create())

        {

            var hashedBytes = hashEngine.ComputeHash(bytes, 0, bytes.Length);

            var sb = new StringBuilder();

            foreach (var b in hashedBytes)

            {

                var hex = b.ToString("x2");

                sb.Append(hex);

            }

            return sb.ToString();

        }

    }

}