OpenSSL-AES-GCM-Benchmark.cs

    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();
            app.Run();
        }
    }
    
    public class Application
    {
        public void Run()
        {
            int samplesToCollect = 100;
            string executable = "openssl";
            List<string> allArgs = new List<string>();
            allArgs.Add("q"); // just quit - to find invocation overhead
            allArgs.Add("aes-256-gcm -in 10M-plain.bin -out /dev/null -k password.txt");
            allArgs.Add("aes-256-cbc -in 10M-plain.bin -out /dev/null -k password.txt");

            foreach (string arg in allArgs)
            {
                double totalMs = 0;
                for (int i = 0; i < samplesToCollect; i++)
                {
                    totalMs += RunCommandGetTime(executable, arg).TotalMilliseconds;
                }
                Console.WriteLine("'{0} {1}' took {2} milliseconds (avg)", executable, arg, totalMs / samplesToCollect); //avg
            }
            Console.ReadLine();
        }

        private TimeSpan RunCommandGetTime(string exe, string args)
        {
            Stopwatch sw = new Stopwatch();
            Process myProcess = new Process();

            myProcess.StartInfo.UseShellExecute = false;
            myProcess.StartInfo.FileName = exe;
            myProcess.StartInfo.Arguments = args;
            myProcess.StartInfo.CreateNoWindow = false; // true;
            myProcess.StartInfo.RedirectStandardOutput = true;
            myProcess.StartInfo.RedirectStandardError = true;
            sw.Start();
            myProcess.Start();
            myProcess.WaitForExit();
            sw.Stop();

            return sw.Elapsed;
        }
    }