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Assignment 5: Cars and Key Fobs (2021)
lmost all cars currently come with a key fob, which allows you to open the doors, and start the car. When you buy a car, the convenience is the compelling feature.
The implicit assumption you make is that the key fob system is secure, and that some random person with $50 of hardware can't drive off with your car. An interesting, more flexible approach uses your Raspberry PI to generate RF by sending a carefully crafted data sequence to the GPIO port. The authors bought some ECUs on EBay, downloaded the firmware, and reverse engineered the encryption (these are usually fairly simple bitwise operations that are easy to identify).
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