The Trusted V2P Parking Privacy Service Research

The Internet of Vehicles refers to the process of information exchange between vehicles and other entities on the Internet through the in-vehicle network unit.This interaction can help drivers obtain real-time traffic information and improve travel efficiency.As an application scenario on the Internet of Vehicles,V2P(Vehicle to Parking)provides suitable parking space information for users who need parking services and solves the problem of difficult parking.However,in the process of using V2 P services,the communication between vehicles and other entities is mostly carried out in open wireless channels,and the messages sent are vulnerable to eavesdropping,tampering,and other attacks during the transmission process,thereby exposing user privacy.In addition,service providers,as managers of vehicle data,may infringe on user rights and interests to maximize their interests,such as: selling user data;increasing the unit price of hourly parking services for the parking spaces required by users,etc.To solve the privacy problem in the parking service and protect the legitimate rights and interests of users.This paper designs and implements a privacy protection system based on the V2 P parking service.The system can not only solve the problem of privacy leakage in the process of parking space search but also eliminate the possibility of the server collecting user query information.The main work of this paper is as follows:1)A V2 P parking privacy protection scheme is implemented using the k-out-of-n the oblivious transmission protocol.In the process of users querying parking lot information,this scheme effectively prevents service providers from snooping on users' privacy as internal adversaries;at the same time,it effectively reduces the amount of client computing without increasing the burden on the server.2)To solve the problem of excessive computing overhead in the dynamic management of legal members,a vehicle management algorithm based on the Chinese remainder theorem is proposed and implemented,effectively reducing the computing and communication overhead in server user management.3)An elliptic curve-based aggregate signature algorithm is designed and implemented,which helps the parking lot efficiently process the user's parking space reservation messages in batches.4)Security analysis shows that the scheme can effectively resist common attack methods such as forgery and replay;experimental analysis shows that the proposed scheme is feasible and can achieve the expected effect.