using System;

using System.Security.Cryptography;

​

namespace EncryptionTest

{

    public class Program

    {

        public static void Main(string[] args)

        {

            Console.WriteLine(Convert.ToBase64String(GenerateKey()));

        }

​

        static byte[] GenerateKey()

        {

            using (AesCng cng = new AesCng())

            {

                cng.GenerateKey();

                return cng.Key;

            }

        }

    }

}