Exemplo n.º 1
0
        private string GetProductKey(string code)
        {
            string        temp;
            StringBuilder key;
            int           tCount;

            key    = new StringBuilder();
            code   = code.Replace("-", "");
            temp   = AESEncryption.Encrypt(code, ENCRYPTION_KEY);
            tCount = 0;
            for (int i = 0; i < temp.Length; i++)
            {
                if (Char.IsLetterOrDigit(temp[i]))
                {
                    key.Append(temp[i].ToString().ToUpper());
                    tCount++;
                    if (tCount >= 4)
                    {
                        key.Append("-");
                        tCount = 0;
                    }
                    if (key.Length >= 20) // 4 block of 4 character
                    {
                        break;
                    }
                }
            }

            return(key.ToString().Substring(0, 19));
        }
Exemplo n.º 2
0
        private string GetActivationCode()
        {
            string        cpuInfo = string.Empty;
            StringBuilder code    = new StringBuilder();
            int           tCount;

            ManagementClass            mc  = new ManagementClass("win32_processor");
            ManagementObjectCollection moc = mc.GetInstances();

            foreach (ManagementObject mo in moc)
            {
                if (cpuInfo == "")
                {
                    //Get only the first CPU's ID
                    cpuInfo = mo.Properties["ProcessorID"].Value.ToString();
                    break;
                }
            }

            cpuInfo = AESEncryption.Encrypt(cpuInfo, ENCRYPTION_KEY);
            tCount  = 0;
            for (int i = 0; i < cpuInfo.Length; i++)
            {
                if (Char.IsLetterOrDigit(cpuInfo[i]))
                {
                    code.Append(cpuInfo[i].ToString().ToUpper());
                    tCount++;
                    if (tCount >= 4)
                    {
                        code.Append("-");
                        tCount = 0;
                    }
                    if (code.Length >= 20) // 4 block of 4 character
                    {
                        break;
                    }
                }
            }

            return(code.ToString().Substring(0, 19));
        }
Exemplo n.º 3
0
        public bool CheckProductKey()
        {
            RegistryKey savedKey;
            string      productKey;
            string      encryptedKey;
            DateTime    insDate;
            DateTime    lwkDate;

            try
            {
                savedKey = Registry.LocalMachine.CreateSubKey(PRODUCT_REGISTRY_KEY);
                if (savedKey != null)
                {
                    if (savedKey.GetValue(PRODUCT_KEY_NAME) != null)
                    {
                        productKey = savedKey.GetValue(PRODUCT_KEY_NAME).ToString();
                        savedKey.Close();
                        if (productKey != "")
                        {
                            if (activationCode == "")
                            {
                                activationCode = GetActivationCode();
                            }
                            encryptedKey = GetProductKey(activationCode);
                            if (encryptedKey.Contains(productKey))
                            {
                                if (encryptedKey.Length == productKey.Length)
                                {
                                    return(true);
                                }
                            }
                        }
                    }
                    // product key is not exist or not valid
                    // check for trial period
                    if ((savedKey.GetValue(INSTALLATION_DATE_KEY_NAME) == null) || (savedKey.GetValue(LAST_WORKING_DATE_KEY_NAME) == null))
                    {
                        // create 2 new sub key for installation date & last working day
                        if (savedKey.GetValue(INSTALLATION_DATE_KEY_NAME) == null)
                        {
                            savedKey.SetValue(INSTALLATION_DATE_KEY_NAME, AESEncryption.Encrypt(DateTime.Now.ToString(), ENCRYPTION_KEY));
                        }
                        savedKey.SetValue(LAST_WORKING_DATE_KEY_NAME, AESEncryption.Encrypt(DateTime.Now.ToString(), ENCRYPTION_KEY));
                    }
                    else
                    {
                        insDate = DateTime.Parse(AESEncryption.Decrypt(savedKey.GetValue(INSTALLATION_DATE_KEY_NAME).ToString(), ENCRYPTION_KEY));
                        lwkDate = DateTime.Parse(AESEncryption.Decrypt(savedKey.GetValue(LAST_WORKING_DATE_KEY_NAME).ToString(), ENCRYPTION_KEY));
                        if ((DateTime.Now.CompareTo(lwkDate) < 0) || (lwkDate.Subtract(insDate).TotalDays > TRIAL_PERIOD))
                        {
                            // trial period is over --> show the registration form
                            this.ShowDialog();

                            return(isRegistered);
                        }
                        savedKey.SetValue(LAST_WORKING_DATE_KEY_NAME, AESEncryption.Encrypt(DateTime.Now.ToString(), ENCRYPTION_KEY));
                    }
                }
                else
                {
                    // cannot create product key in registry
                    MessageBox.Show("Cannot create product key entry. The program will now abort!");
                    Environment.Exit(0);
                }
            }
            catch (Exception ex)
            {
                // problem occurred when checking product license
                Console.WriteLine(ex);
                MessageBox.Show("Problem occurred while checking for product license. The program will now abort!");
                Environment.Exit(0);
            }

            return(false);
        }