The XPInfo Utility, 2003-07-31


This utility displays the hardware changes that have been applied since activation to a machine running XP. It only works with versions of XP that require activation. Consult the README file for further information.


Zipped executable


Inside Windows Product Activation, 2001-07-09


This whitepaper reveals the technical details of Windows Product Activation. It contributes facts to a debate that is characterized by uncertainty, speculation, and fear.


ASCII document


Our FAQ document covers common questions concerning the whitepaper.


ASCII document


The XPDec utility illustrates the algorithms given in the whitepaper. It can be used to verify our findings.


Zipped Visual C++ project

Zipped executable

Self-extracting executable


The WPA Resource Center contains all our WPA-related publications in a single place.