CAN Disabler: Hardware-based Prevention method of Unauthorized Transmission in CAN and CAN-FD networks
Ryo Kurachi, T. David Pyun, Shinya Honda, Hiroaki Takada, Hiroshi Ueda, Satoshi Horihata
Abstract
There have been a quite number of security attack cases against Controller Area Network (CAN) reported in recent years, but in the meantime no security function is included in the ECU in the current in-vehicle control network. Thus, in-vehicle control networks particularly require cost-effective security features. In this paper, therefore, we propose a method to block unauthorized CAN-bus access using a CAN controller that is modified to prevent the ECU from transmitting messages to the CAN-bus at abnormal frequency. Then, we have also demonstrated the effectiveness of the disabler on CAN with flexible data-rate (CAN-FD) buses.
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