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Software Registration key derived from PC hardware components *** Updated ***

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Submitted on: 2/3/2015 11:26:00 PM
By: Steve W (from psc cd)  
Level: Intermediate
User Rating: By 45 Users
Compatibility: VB 6.0
Views: 7658
 
     This is a simplified example that shows how to register an app to individual PCs using a key that is derived from unique properties such as the CPU ID, OS serial, MAC address etc. It's real easy to do & secure enough to keep most users honest. Feel free to modify & use it as you see fit & please vote if you find it useful. Any feedback or comments are welcome and why not take up my cracking challenge - no one has succeeded yet! It uses WMI so if you're running W95, W98 or NT4 & you get an automation error download the WMI engine from: http://download.microsoft.com/download/platformsdk/wmicore/1.5/W9XNT4/EN-US/wmicore.EXE. Update info: The app is even more secure as it now includes complete obfuscation of the key variable and a simple and easily expandable anti-hacking routine (currently includes RegMon, FileMon, SoftICE - routine is adapted from Kevin Lingofelter's code at http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=10000&lngWId=1).

 
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7/19/2017 7:15:12 AMEvariste Galois

There are three keystrokes which keep this from being ak good or excellent application: WSI. WSI is notorious because WMI can be spoofed. But at least you haven't committed one of the nastier methods: using a user's IP address to determine who is known [or not].
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