A (key generator) is a program that creates product activation codes without authorization from the software vendor. In the case of AutoCAD 2009, a keygen typically works by taking the request code displayed on the activation screen (a string generated from your computer’s hardware ID and the product’s serial number) and processing it through an algorithm to produce a matching activation code . Some keygens also include a patch that modifies the software’s local license validation routines, bypassing the need for an online check with Autodesk’s servers.
Installing the Network License Activation Utility - Autodesk autocad 2009 keygen verified