A Can Bus Based Auto-Guard System

Automotive theft has been a persisting problem around the world and greater challenges come from professional thieves. In this paper, we present an automotive security system which effectively prevents the stealing of key auto systems for re-sellingby introducing three layers of security features written in the form of firmware and embedded on the Electronic Control Units(ECUs). First we design a new Innovative car key, the car key transfers a random data each and every time the car is unlocked. The transaction of password from key to car is known only to these devices and any intermittent unit cannot diagnose the transaction as each and every time the data is changing. Secondly the image section has been proposed for security system in car. The face recognition and comparison is done in this section. Thirdlya Controller Area Network(CAN) bus based authentication system has been introduced to avoid the dismantling of car parts and reuse in some other vehicle, wherein the car engine gets started only in case if the car part belongs to the car. It has showed in practice that compared with the traditional auto guard system, this system could not only stop car theft singly, but also improve the security and reliability.