This article is devoted to the development of the key licensing system for the applications. In the theoretical part of the article, we will examine the cryptography methods, which can be used while implementing the licensing system. Also we will discuss all pros and cons of these methods and select the possible ones for using in the application. In the practical part of the article, we will provide the implementation of the simplest licensing system, which guaranties the protection from cracking even if a hacker knows the source code of an algorithm.
Articles Written by Apriorit Inc.
Recently I faced a very interesting task, I had to port an application from one platform (Windows) to another (Linux). This article is intended for everybody who wants to write a cross-platform application.
Discover an easy way to set up system-wide global API hooks using AppInit_DLLs registry key for DLL injection and Mhook library for API hooking. To illustrate this technique we will show how to easily hide calc.exe from the list of running processes.
Though the Clipboard is one of the fundamental parts of the Windows operating system, there is little information about how it works, especially in the low level. In this article, I'm going to tell you something about the Clipboard internals by showing how you can forbid access to it.
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Discover how to develop a simple file system filter driver. The demo driver will print the names of opening files to debug output. The article requires basic windows driver and C/C++ knowledge. However it may be interesting to the people without windows driver experience.