README

Software Licensing System with Delphi

New verison 2.o here

Delphi Licencer New Version 2.0

This Delphi project demonstrates a simple software licensing system that generates and validates license keys. It allows you to control access to your software by issuing license keys with expiration dates and other information.

Overview

• Generate license keys with a specified product name, product key, and expiration date.
• Store and validate license keys to control software access.

Features

• Generate and validate software license keys.
• Store license keys in a configuration file for persistence.

Prerequisites

• Embarcadero Delphi or a compatible development environment.
• Basic understanding of Delphi programming.

Getting Started

1. Clone or download this repository to your local machine.
2. Open the Delphi project in your development environment.
3. Configure the project with your specific product name, product key, and encryption key in the LicenseGenerator.pas and LicenseValidator.pas units.
4. Build and run the project to generate a license key using the GenerateAndSaveLicenseKey function in your application.
5. The generated license key is automatically saved in the configuration file.
6. When your software starts, load the license key from the configuration file using the LoadLicenseKey function.
7. Validate the loaded license key with the CheckLicense function.
8. Take action based on the license validation result, such as allowing or restricting access to your software.

Usage Example

Here is an example of how to generate and save a license key in your Delphi application:

var
  productName: string;
  productKey: string;
  expirationDate: TDateTime;
  encryptionKey: string;
  licenseKey: string;
begin
  // Set your product information and encryption key
  productName := 'YourProduct';
  productKey := 'YourProductKey';
  expirationDate := EncodeDate(2023, 12, 31);
  encryptionKey := 'YourEncryptionKey';

  // Generate and save the license key
  licenseKey := GenerateAndSaveLicenseKey(productName, productKey, expirationDate, encryptionKey);

  // Use the generated license key as needed
end;

To check the license when your application starts:

if not CheckLicense then
begin
  // Invalid license, take appropriate action (e.g., show an error message and exit)
  Application.Terminate;
end
else
begin
  // Valid license, continue running the application
  // Add your application's main code here
end;

License

This library is open source and released under the MIT License. You are free to use, modify, and distribute it as needed. Please check the LICENSE file for more details.

Contributions

Contributions to this library are welcome. Feel free to open issues, submit pull requests, or suggest improvements. Your feedback and contributions will help make this library even better.

Issues

If you encounter any issues or have questions related to this library, please open a GitHub issue, and we will do our best to assist you.

We welcome contributions and feedback from the community to improve and enhance this project.

Enjoy using the licensing system in your Delphi applications!

Please replace YourProduct, YourProductKey, and YourEncryptionKey with your actual product name, product key, and encryption key in the examples. Update the links to your GitHub repository and external references as needed. This README provides examples of how to generate, save, and check the license in a Delphi application.