Using GitHub in your licensing stack solves infrastructure and security headaches for independent developers and teams. 1. Automated Code Distribution
: To avoid slowing down every page load, store the validation result in a local file or session for a set period (e.g., 24 hours). 4. Protect Your Source Code
The client application must send a handshake to the server and verify the server's signature using a hardcoded public key. This prevents users from mocking your server responses locally.
For PHP developers, private repositories can be integrated directly into Composer via custom repository configurations or tools like Private Packagist. The license key can act as a bearer token or auth credential to access the package updates. Architectural Overview
Building a secure PHP license key system involves balancing strong server-side tracking, cryptographic client verification, and automated GitHub-driven delivery pipelines. While client-side PHP code can always be analyzed, incorporating signed payloads and offloading heavy feature processing to remote APIs ensures your software remains well-protected while providing a seamless update experience for legitimate buyers.
Grant the token Contents: Read permissions to allow it to download release assets. Step 2: Creating the Licensing Server (PHP API)
: A high-performance system for managing products and versions. It includes a dedicated SDK and command-line tools, making it suitable for developers who want a ready-to-use backend for selling installable software.
The client application sends its key and current domain to your server via a CURL request.
: A specialized tool for RSA key pair generation. It emphasizes security by using private keys for generation and public keys for in-app verification. 2. Comprehensive License Management Systems
: A central dashboard and API database that generates, stores, and validates license keys.
For ultimate control, you might choose to build your own lightweight license system.
Historically, developers had two choices:
CREATE TABLE licenses ( id INT AUTO_INCREMENT PRIMARY KEY, license_key VARCHAR(64) UNIQUE NOT NULL, product_slug VARCHAR(50) NOT NULL, status ENUM('active', 'expired', 'suspended') DEFAULT 'active', max_activations INT DEFAULT 1, expires_at TIMESTAMP NULL, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ); CREATE TABLE license_activations ( id INT AUTO_INCREMENT PRIMARY KEY, license_id INT, domain VARCHAR(255) NOT NULL, activated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, FOREIGN KEY (license_id) REFERENCES licenses(id) ON DELETE CASCADE ); Use code with caution. Step 2: The Verification API Endpoint (Server Side)