Abstract
Smart driving has become conceivable due to the rapid growth of vehicular ad hoc networks. VANETs are considered as the main platform for providing safety road information and instant vehicle communication. Nevertheless, due to the open wireless nature of communication channels, VANET is susceptible to security attacks by malicious users. For this reason, secure anonymous authentication schemes are essential in VANETs. However, when vehicles reach a new roadside unit (RSU) coverage area, the vehicles need to perform reauthentication with the current RSU, which significantly diminishes the efficiency of the entire VANET. Therefore, the introduction of blockchain technology has created opportunities for VANETs to resolve the aforementioned challenges. Due to the decentralized nature of blockchain technology, rapid reauthentication of vehicles is achieved in this paper through secure authentication code transfer between the consecutive RSUs. The security strength of the proposed blockchain-based anonymous authentication scheme against various harmful security attacks is proven in the security analysis section to ensure that it provides better security. In addition, blockchain, as presented in the performance analysis section, is used to substantially diminish the computational cost compared to conventional authentication schemes.
Highlights
With the speedy development of smart cities, the VANETs have fascinated extensive attention in both academia and industry. e development of VANETs brings inordinate comfortable and convenient driving experience for vehicle drivers
In VANETs, it is very tough to deal with the dissemination of forged messages from the authorized vehicle users. e dissemination of forged messages from the authorized vehicles in the VANET system decreases the Security and Communication Networks driving efficiency and causes some accidents that can threaten the life of vehicle users [2,3,4]
Our contributions: to overcome the above problems, a blockchain-based anonymous authentication scheme is presented in this paper. e main contributions of this paper are summarized as follows: To propose a blockchain-assisted time-efficient anonymous authentication to initially validate the legitimacy of the vehicle user, the roadside unit (RSU) are considered to be the miners in the proposed system which are able to verify the validity of a vehicle consumer via the consensus process
Summary
With the speedy development of smart cities, the VANETs have fascinated extensive attention in both academia and industry. e development of VANETs brings inordinate comfortable and convenient driving experience for vehicle drivers. E dissemination of forged messages from the authorized vehicles in the VANET system decreases the Security and Communication Networks driving efficiency and causes some accidents that can threaten the life of vehicle users [2,3,4]. There is an absence of scalability during the anonymous authentication of vehicles, which prompts the incapability to adjust to the changing requests of VANETs. Our contributions: to overcome the above problems, a blockchain-based anonymous authentication scheme is presented in this paper. In each vehicle, keeping the master key of the system could cause efficient attacks and unexpected risks to the system This system neglected to take into account the problem of scalability and the resulting overhead of communication. To meet out these necessities, a new blockchain-based BBAAS anonymous authentication is proposed in this paper
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