Design method of lightweight identity authentication protocol for in-vehicle network based on device fingerprint

Abstract

The invention discloses a device fingerprint-based vehicle-mounted network light identity authentication protocol design method. The method comprises the steps of (1) building of a system model: establishing a registration center (RC), an external device (ED), and a storage unit (SU) installed on a vehicle; (2) system initializing: registering, by the RC, the ED and distributing a device ID, building a fingerprint database (FD) of the device, and downloading the FD to the SU of a legal vehicle; and (3) identity authentication of a wireless external device. The method is better in identification, availability and uniqueness. ''Radio frequency fingerprint'' of an accessed device is protected by using a Hash function in cryptography, so that a problem that identity information of the wireless external access device is easy to forge and tamper is solved. Due to design of the device fingerprint-based light identity authentication scheme, it is ensured that only a legal external device can access information in the vehicle, so that the vehicle-mounted network communication is safer and more efficient.

Description

technical field [0001] The invention relates to the fields of device fingerprints, vehicle network, identity authentication protocol design and the like, in particular to the field of lightweight identity authentication protocol for vehicle network based on device fingerprints. Background technique [0002] With the development of automobile intelligence and networking, automobiles have more wireless interfaces, enabling the vehicle electronic control unit (ECU) to communicate with external devices or networks. These external wireless interfaces bring more convenience to drivers While being functional and functional, it also becomes an entry point for cyber attacks inside the car. Attackers will use the security loopholes in the in-vehicle network communication protocol to attack the in-vehicle network through wireless devices, thereby seriously endangering the personal and property safety of vehicle drivers, passengers, and traffic participants. [0003] Scholars at home a...

AI Technical Summary

Problems solved by technology

Then, the identity authentication of external access devices is carried out according to the identification results of all comparison fingerprint similarities in the fingerprint database, which solves the problem that the identity information of wireless access devices is easy to be forged and tampered, and then achieves only legal external devices In order to obtain the purpose of accessing the information authority in the vehicle, and thus improve the safety and efficiency of vehicle network communication

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