static void CreateSelfSignCertificate(CertOption option)
        {
            var fileName = option.CertFileName;
            var subject = option.Subject;
            var password = option.Password;

            try
            {
                var securePassword = Certificate.ConvertSecureString(password);
                var startDate = DateTime.Now;
                var endDate = startDate.AddYears(option.Years);
                var certData = Certificate.CreateSelfSignCertificatePfx(subject, startDate, endDate, securePassword);

                using (var writer = new System.IO.BinaryWriter(System.IO.File.Open(fileName, System.IO.FileMode.Create)))
                {
                    writer.Write(certData);
                    writer.Flush();
                    writer.Close();
                }
                securePassword = Certificate.ConvertSecureString(password);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
        internal static CertOption ParseCommand(string[] args)
        {
            string optionsw = "";
            List<string> parameters = new List<string>();
            string years = "";

            // スイッチとパラメータを分離します
            for (var i = 0; i < args.Length; i++)
            {
                if (args[i].StartsWith("-"))
                    optionsw = args[i].Substring(1).ToLower();
                else
                    parameters.Add(args[i]);
            }

            // 有効期間を省略した場合は、2年とする
            if (args.Length == 4)
                parameters.Add(YEARS.ToString());

            var options = new CertOption();
            try
            {
                if (optionsw == "create" || optionsw == "c")
                {
                    options.IsCreate = true;
                    options.CertFileName = parameters[0];
                    options.Subject = parameters[1];
                    options.Password = parameters[2];
                    years = parameters[3];
                }
                else
                {
                    options.IsCreate = false;
                    options.CertFileName = parameters[0];
                    options.NewCertFileName = parameters[1];
                    options.Subject = parameters[2];
                    options.Password = parameters[3];
                    years = parameters[4];
                }
                // 有効期間の変換に失敗すれば、デフォルトの2年にします
                int term = 0;
                var parseResult = int.TryParse(years, out term);
                if (!parseResult) term = YEARS;
                options.Years = term;

                return options;
            }
            catch (Exception e)
            {
                throw e;
            }
        }