private static void Check30DayLicence(int numberOfDays, bool IsTrial) { string str = "{YTh394jhu9JD31O8923XMOAL1}"; string str1 = "{5O2sTNBpaXdVVcMw13083pFWkL}"; string value = ""; string value1 = ""; try { using (RegistryKey registryKey = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\OpID")) { value = (string)registryKey.GetValue(str); value1 = (string)registryKey.GetValue(str1); } if ((string.IsNullOrEmpty(value1) ? true : string.IsNullOrEmpty(value))) { throw new PDFToolkitException(); } } catch (Exception exception) { MessageBox.Show("License tampered with!"); Environment.Exit(1); } if ((value != "YyNTY4dfltMT456N5M0JDDoyNj9EYzNTBENDg4QTg0QgddsQTMiAQjAzREUc3OEo3RCRjUxN0MD7MjAx0MkM1RkTUxNUNBQURE3QjUyN0ZGRUM" ? true : value1 != "ZBMzBENzYMAxMiAU1NzYwDowMjM0wOTZERkNCMDowMENUJEDtQkxNERc1MOTcvMjjFEREEwOUDNjgxRNUQxQjQxNzY3NTkIxODUFGT9aNG7nwNkIwR")) { string[] strArrays = PDFHelper.DecryptDate(value).Split(new char[] { ';' }); value = strArrays[0].ToString(); strArrays = PDFHelper.DecryptDate(value1).Split(new char[] { ';' }); value1 = strArrays[0].ToString(); string str2 = strArrays[1].ToString(); string str3 = strArrays[2].ToString(); if (str2 == PDFToolkit.LicenseKey) { DateTime dateTime = DateTime.Parse(value); DateTime dateTime1 = DateTime.Parse(value1); if ((DateTime.Compare(DateTime.Now, dateTime) < 0 || DateTime.Compare(dateTime1, DateTime.Now) > 0 ? true : DateTime.Compare(dateTime, dateTime1) < 0)) { MessageBox.Show("License tampered with! Please change your system date to continue."); Environment.Exit(1); } if (DateTime.Compare(DateTime.Now, dateTime1.AddDays((double)numberOfDays)) > 0) { DateTime dateTime2 = new DateTime(1901, 1, 1); try { using (RegistryKey registryKey1 = Registry.CurrentUser.CreateSubKey("SOFTWARE\\Classes\\OpID")) { registryKey1.SetValue(str1, PDFHelper.EncryptDate(string.Format("{0};{1};{2}", new object[] { dateTime2.ToString(), PDFToolkit.LicenseKey, PDFToolkit.LicenseKey, IsTrial.ToString() })), RegistryValueKind.String); } bool flag = false; using (RegistryKey registryKey2 = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\OpID\\Data", true)) { string[] valueNames = registryKey2.GetValueNames(); for (int i = 0; i < (int)valueNames.Length; i++) { string str4 = valueNames[i]; if ((string)registryKey2.GetValue(str4) != "AxMiAREEwNUQxQjc1MjM0OO1NzYwQGOUQxNzY3NTkkZBTwJEDMzBENRURDNjgxRjFEZERkNCMT9aNG7ncvMjwMDowMowMDtENUzYxNEIxODUwNkITF") { if (PDFToolkit.LicenseKey == PDFHelper.DecryptDate((string)registryKey2.GetValue(str4)).Split(new char[] { ';' })[1].ToString()) { flag = true; break; } } } } if (!flag) { using (RegistryKey registryKey3 = Registry.CurrentUser.CreateSubKey("SOFTWARE\\Classes\\OpID\\Data")) { Guid guid = Guid.NewGuid(); registryKey3.SetValue(guid.ToString(), PDFHelper.EncryptDate(string.Format("{0};{1};{2}", dateTime2.ToString(), PDFToolkit.LicenseKey, IsTrial.ToString()))); } } } catch (Exception exception1) { MessageBox.Show(exception1.Message); Environment.Exit(1); } MessageBox.Show(string.Format("This message is being displayed because either your {0} day license has expired or the license has been tampered with.\n\nIf you would like to purchase a new license then please contact \"[email protected]\".", numberOfDays)); Environment.Exit(1); } } else { using (RegistryKey registryKey4 = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\OpID", true)) { registryKey4.SetValue(str1, PDFHelper.EncryptDate(string.Format("{0};{1};{2}", DateTime.Now, PDFToolkit.LicenseKey, IsTrial.ToString()))); } } } else { using (RegistryKey registryKey5 = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Classes\\OpID", true)) { registryKey5.SetValue(str1, PDFHelper.EncryptDate(string.Format("{0};{1};{2}", DateTime.Now, PDFToolkit.LicenseKey, IsTrial.ToString()))); } } try { using (RegistryKey registryKey6 = Registry.CurrentUser.CreateSubKey("SOFTWARE\\Classes\\OpID")) { DateTime now = DateTime.Now; registryKey6.SetValue(str, PDFHelper.EncryptDate(now.ToString()), RegistryValueKind.String); } } catch (Exception exception2) { MessageBox.Show(exception2.Message); Environment.Exit(1); } }