Research And Implementation Of Anonymous Identity Authentication Mechanism Of Internet Of Vehicles Based On Blockchain

With the rapid development of network information technology,the Internet of Vehicles has become an indispensable part of intelligent transportation,and has gradually become an important component of intelligent driving and even unmanned driving.The Internet of Vehicles continuously provides us with innovative services,such as driving assistance,road hazard warning services,and traffic notifications,bringing great convenience to our lives.However,due to the openness of the vehicle networking communication network,it is also vulnerable to various network attacks and faces many security challenges.In addition,the network topology of the Internet of Vehicles is undergoing rapid changes,which also requires high computational efficiency and performance for message transmission and identity authentication processes,while also taking into account the protection of communication vehicle identity privacy.The current identity authentication schemes for the Internet of Vehicles have shortcomings in balancing the correctness of the scheme itself with the efficiency of protecting vehicle identity privacy,and many existing schemes have relatively high system consumption.Therefore,in order to solve the above problems,this article proposes two anonymous identity authentication schemes for the Internet of Vehicles.The main contributions of this article are as follows:(1)A anonymous identity authentication scheme for the Internet of Vehicles(Io V)is proposed,which combines group signature and blockchain.This scheme utilizes the distributed storage advantages of blockchain to encrypt vehicle identity information and upload private data,avoiding identity leakage caused by illegal user attacks on central nodes under traditional centralized storage,and improving data sharing rate and identity authentication efficiency.At the same time,this scheme utilizes group signature groups and CA to double sign vehicle privacy data,ensuring the security of vehicle identity data.In this scheme,all communication entities use pseudonyms for communication.In case of communication conflicts,the group signature group will trace the illegal identity to ensure the secure sharing of communication data.At the same time,this scheme proposes a new kana calculation method,in which CA flexibly generates communication kana based on the sparsity and number of objects to be communicated in the road section where the vehicle is located,greatly improving communication efficiency and saving the overall cost of the scheme.(2)A car networking anonymous identity authentication scheme combining blockchain and trust evaluation is proposed.In order to solve the problems of low authentication efficiency,high certificate maintenance cost,and high system storage cost of existing blockchain based car networking anonymous identity authentication schemes,this paper proposes a reliable car networking anonymous identity authentication scheme combining blockchain and traditional PKI technology.At the same time,this scheme includes a new vehicle trust evaluation method,which implements effective constraints on vehicle behavior and prevention of malicious vehicles.In addition,this scheme designs a blockchain certificate with a simple structure and easy proofreading,which greatly reduces system storage overhead,reduces certificate maintenance costs,and improves the overall efficiency of the scheme.(3)Safety analysis and simulation experiments were conducted on the two proposed schemes for the same type of existing schemes,proving that the two proposed schemes can meet the current security requirements of the vehicle network and have strong reliability.After verification,the proposed scheme in this article has improved the authentication speed by 4% and 6% respectively compared to existing similar schemes,showing strong reliability and high authentication efficiency.