Method and transmitter for communication using data link layer frames

By introducing authenticity and security indications into the protocol frames of vehicle bus communications and using dedicated hardware at the data link layer to implement authentication and encryption, security threats in bus communications are resolved, the authenticity and security of communications are improved, and real-time communication needs are met.

CN115336225BActive Publication Date: 2025-09-19INFINEON TECHNOLOGIES AG
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Patent Information

Application Number
CN202180022847.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-03-20
Filing Date
2021-03-19
Publication Date
2025-09-19
Estimated Expiration
2041-03-19

AI Technical Summary

Technical Problem

In vehicle networks, bus communications face the risk of malicious command injection, especially in autonomous vehicles. Existing technologies have difficulty providing effective authenticity and security protection at the data link level, leading to potential security threats.

Method used

By introducing indication information into the header of the protocol frame to indicate the authenticity and/or data security level of the protocol frame, and performing authentication and encryption processing at the data link layer, the authenticity and data security functions are implemented using dedicated hardware components, avoiding the burden on higher protocol layers.

Benefits of technology

It improves the security of bus communication, reduces the risk of malicious command injection, meets real-time communication requirements, and reduces the processing burden on higher protocol layers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure relates to authenticity and data security of a bus-based communication network in a vehicle. The present disclosure teaches a protocol frame, a transmitter at a data link layer, and a receiver at a data link layer that provide such authenticity and data security, as well as a communication network in a vehicle that employs the protocol frame, transmitter, and receiver according to the present disclosure.
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Citation Information

Patent Citations

  • Vehicle-mounted CAN FD bus communication system and method based on pre-shared key

    CN106899404A