This blog provides a comprehensive overview of the user interface (UI) and licensing management customization capabilities within the PC Guard software protection system. The system offers a tiered approach to UI modification, ranging from basic text edits to full programmatic control over the entire licensing lifecycle.

Protection Interface is a critical communication layer that enables a protected software application to interact directly with the embedded SOFPRO protection code. This interface allows the application to query license status, demo limitations, and other runtime data. More significantly, it provides a framework for developers to delegate responsibility for handling key licensing events away from the default protection mechanisms and into their own application logic.

The Protection Interface is a critical component of the SOFPRO software protection suite, acting as the communication layer between a protected application and the embedded protection code. It enables the application to query its own license status, retrieve detailed licensing data, and interact dynamically with the protection layer. This allows developers to implement highly customized licensing models and application behaviors based on the license state.

The Serial Numbers feature in PC Guard is a comprehensive system designed to identify and track individual copies of protected software, proving particularly useful when software is distributed through indirect channels like resellers or retail stores. This feature is compatible with the REMOTE, PLAIN, and USB protection methods but is explicitly unavailable for the NETWORK protection method.

This article synthesizes the core application protection capabilities offered by Software Protection Labs' PC Guard, focusing on its encryption and password protection features. The primary goal of these features is to enhance application security against unauthorized access and malicious modification.

The PC Guard software protection suite includes a comprehensive "Demo mode" feature designed to create robust trial versions of applications. This mode operates by imposing one or more limitations on the protected software, which can be combined as needed. There are four primary types of limitations: a finite number of executions (number of runs), a set number of days from the first launch, a fixed calendar period, and a cap on total application runtime.

The PC Guard security feature set provides a multi-layered defense mechanism designed to protect software applications from tampering, reverse engineering, and unauthorized usage in specific environments. The protection strategy is built around a core of integrity checks and anti-debugging measures that are enabled by default, ensuring a robust baseline of security. Key default features include self-checking for modifications, memory anti-dumping, debugger detection, and the renaming of executable sections.

The General Settings for PC Guard provide a comprehensive suite of options for managing application compatibility, security, and licensing behavior. The configurations address common issues arising from the software protection process, particularly for non-standard applications and specific operating environments.

The "Application info" settings within PC Guard are foundational for defining a protected application's identity, licensing behavior, and update strategy.

This article provides a comprehensive analysis of the redistributable files required for applications protected by SOFPRO's PC Guard software. While PC Guard embeds its core protection and licensing code directly into the protected application, certain configurations and features necessitate the distribution of additional files.