Autodesk provides several legitimate pathways to use their software without needing a "crack" or unauthorized product key:

These official guides demonstrate how to safely download and activate AutoCAD through the educational and trial programs:

: Students and educators at recognized institutions are eligible for free one-year educational access to Autodesk products, including AutoCAD. This access is renewable annually as long as you remain eligible. You must create an Autodesk Education account and verify your status with official documentation.