Abstract
In modern vehicles, functionalities are typically managed by Electronic Control Units (ECUs). They communicate each other by using the CAN bus protocol, standardized as ISO 11898-1:2015. However, the CAN protocol was not meant to be secure: messages are sent in clear. In the last decade, several attempts to secure the CAN protocol have been implemented. Here, we focus on TOUCAN [1], [2] and we propose and study a revised version of TOUCAN protocol enhanced from a functional safety prospective and compliant with AUTOSAR safety and security guidelines. In particular, we analyse and simulate the communication robustness of the new version of TOUCAN against transmission errors.
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