Huawei Technologies Co., Limited

Huawei International Pte. Ltd.

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Qingdi Sha

Zhuo Wei

Hsiao-Ying Lin

Yanjiang Yang

Rehana Yasmin

Feng Geng

Kang Tang

Steven Yin Zhong

A controller area network bus based security communications system includes a gateway electronic control unit (ECU) and at least one control area network (CAN) bus ECU. The gateway ECU generates a random number, and sends the random number to the at least one CAN bus ECU. A first CAN bus ECU obtains the random number sent by the gateway ECU, and generates a first information authentication code based on a key of a first CAN identifier, the random number sent by the gateway ECU, a count value of the first CAN identifier, and data of a first CAN packet.

Controller area network bus based security communications method, apparatus, and system

This document describes a system and method for managing communications between modules in a Controller Area Network (CAN) in a secure manner. In particular, the system employs a hierarchical key generation method that allows a module in the CAN to use a single ascendant key together with relevant identifiers to generate descendant keys for CAN identities in the Controller Area Network. These keys are then used by the broadcasting and receiving CAN modules to authenticate published messages.

System and method for managing secure communications between modules in a controller area network

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Qingdi Sha