Abstract

The automotive industry has represented an important sector of industrial development worldwide. With technology growth, vehicles have been equipped with various devices that allow them to perform different functions, increase autonomy level, and give drivers greater confidence and comfort. In this sense, data security is a fundamental feature since access to car functionalities needs to be protected from outsiders, only allowing access to authorized users. It means to guarantee data security through communication buses even when connecting from external devices. Therefore, it is necessary to design new security techniques that increase the confidentiality and improve authentication in new vehicles.Although at first, automotive communication protocols did not include security mechanisms, the risk of threats was always latent. Due to this, the search for new methods and architectures to improve security and autonomous functions in communication protocols has been in constant increase. New paradigms and ways to prevent, detect and mitigate attacks on automotive communication are necessary for the new challenges ahead. This article comparatively analyses the state of the art for in-vehicle communications protocols regarding a variety of algorithmic approaches based on architectural configurations and extensively compares their performance.

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