The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2022
Filed:
Nov. 22, 2019
Huawei Technologies Co., Ltd., Shenzhen, CN;
Hsiao-Ying Lin, Singapore, SG;
Zhuo Wei, Singapore, SG;
Qingdi Sha, Shenzhen, CN;
Kang Tang, Dongguan, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
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.