using System;

public class Program

{

    public static void Main()

    {

​

            var appId = "cli";

            var appKey = "e28f56aa9951b2ea";

            //var appKey = Guid.NewGuid().ToString("N");

            string hashedKey;

​

            var saltedSecret = appId + appKey;

            using (var hashAlgorithm = System.Security.Cryptography.SHA512.Create())

            {

                var hash = hashAlgorithm.ComputeHash(System.Text.Encoding.UTF8.GetBytes(saltedSecret));

                hashedKey = System.Convert.ToBase64String(hash);

            }

​

            Console.WriteLine(appKey);

            Console.WriteLine(hashedKey);

    }

}