Research on the Key Agreement Scheme between Car and Cloud Server Based on Certificateless

Abstract

In view of the low efficiency of the current vehicle networking authentication key agreement scheme and the frequent update of the public and private keys of the vehicle, a key agreement scheme based on a certificateless vehicle and a cloud server is proposed. This scheme realizes the privacy protection of the vehicle and the anonymous authentication of the vehicle and the server by introducing dynamic identity and dynamic key mechanism. At the same time, by constructing a temporary identity index database, the trusted center can track suspicious vehicles after the fact and meet the conditional anonymity requirements of vehicles. In addition, part of the private key of the vehicle in this solution will dynamically change with its temporary identity, which reduces the correlation between the vehicle’s real identity and the private key, and improves security. At the same time, in order to obtain high-efficiency authentication efficiency, the use of unparalleled linear pairing calculation effectively reduces the communication volume of information transmission and the verification overhead of the authentication center.