Low-altitude node identity authentication and privacy protection method based on Hash chain

Abstract

The present invention discloses a low-altitude node identity authentication and privacy protection method based on a Hash chain. The method comprises the steps of: when a vehicle node enters a space-air-ground integral network at the first time, taking unique and undeniable wireless signal fingerprints which cannot be cloned as identity features of the vehicle node, and creating a Hash block for the vehicle node while performing identity registration of the vehicle node by an authentication center; when communication of the vehicle node is performed in an area, performing identity authentication based on block content by a management node; in order to protect the identity privacy, employing a pseudonym generated by the management node to perform communication by the vehicle node; and recording key motions or information of different nodes at different time in the area by the management node, and recording the key motions or the information of the vehicle node itself at different areasat different time by the vehicle node. The method can effectively defense various attacks such as the sybil attack, the denial of service attack and the replay attack. Besides, the data safety of thenetwork is guaranteed, namely, the confidentiality, integrity, availability and non-repudiation of the data in the network.

Description

technical field [0001] The present invention relates to the field of intelligent transportation system security technology, in particular to the security technology of an air-space-ground integrated network constructed by combining space-space nodes such as satellites and unmanned aerial vehicles with the Internet of Vehicles, and in particular to the identity authentication of low-altitude nodes in an space-space-ground integrated network and privacy protection methods. Background technique [0002] With the development of artificial intelligence and unmanned driving, the Internet of Vehicles has become an irreplaceable part of the Intelligent Transportation System (ITS). The traditional ground information network can no longer meet the needs of data transmission, processing and storage between vehicles. Therefore, air and space nodes will gradually integrate into the entire network to provide more comprehensive situational information and shorten transmission delay. The a...

AI Technical Summary

Problems solved by technology

At present, research on the security of the Internet of Vehicles and UAVs has been carried out at home and abroad, but there are few studies on security methods in the air-space-ground integrated network.

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