Authentication method and device between vehicle-mounted devices

Abstract

The embodiment of the present invention discloses an authentication method and device between vehicle-mounted devices, which are applied to a second vehicle-mounted device. The method includes: receiving a message authentication code sent by a roadside network element; wherein, the message authentication code generated by the roadside network element based on authentication parameters; the authentication parameter is assigned to the first vehicle-mounted device by the roadside network element after authenticating the safety of the first vehicle-mounted device; receiving the first The first device identification and authentication parameters sent by the vehicle-mounted device; using the first authentication function, processing the first device identification and the authentication parameters received from the first vehicle-mounted device to calculate a message authentication code; comparing the The message authentication code sent by the network element of the roadside network and the calculated message authentication code; if the two message authentication codes are the same, the security of the first vehicle-mounted device is authenticated. Using network roadside network elements to perform authentication between vehicle-mounted devices has the characteristics of simple authentication and high authentication efficiency.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an authentication method and device between vehicle-mounted devices. Background technique [0002] In the Internet of Vehicles, it is necessary to consider the secure communication between vehicle-mounted devices, and how to ensure that fast-moving vehicle-mounted devices can accurately identify the identities of both communication parties, that is, mutual authentication between vehicles, has become a key issue. [0003] In the prior art, there are the following authentication methods between vehicle-mounted devices: [0004] 1) The "challenge-response" authentication mechanism based on the pre-shared symmetric key of both authentication parties: if the symmetric key based on both parties and sharing is used directly between the vehicle devices, preset maintenance is required between any two vehicle devices unique key. Considering the requirement of uniqueness of the key, ...

AI Technical Summary

Problems solved by technology

This will lead to the problem of high overhead such as the hardware cost of the authentication system.

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