公开(公告)号：US20200092129A1

公开(公告)日：2020-03-19

申请号：US16692654

申请日：2019-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hsiao-Ying Lin ,  Zhuo Wei ,  Qingdi Sha ,  Kang Tang

IPC: H04L12/40 ,  H04L9/08

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.

公开(公告)号：US11271771B2

公开(公告)日：2022-03-08

申请号：US16692654

申请日：2019-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hsiao-Ying Lin ,  Zhuo Wei ,  Qingdi Sha ,  Kang Tang

IPC: H04L12/40 ,  H04L9/08

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.

公开(公告)号：US20230199500A1

公开(公告)日：2023-06-22

申请号：US18167627

申请日：2023-02-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Feng Geng ,  Qingdi Sha ,  Steven Yin Zhong

IPC: H04W12/122 ,  H04L9/32

CPC classification number: H04W12/122 ,  H04L9/32 ,  H04W56/002

Abstract: A secure onboard network communication method includes obtaining an initial value of a first freshness value (FV), obtaining a second value based on the initial value, and refreshing the initial value to the second value; sending a first message, where the first message includes the second value of the first FV; obtaining an initial value of a second FV, and when a first condition is met, refreshing the second FV to the second value, where the first condition includes a condition that the second value of the first FV is greater than or equal to a sum of the initial value of the second FV and a predetermined value.