Abstract
While cloud computing and Internet of Things (IoT) technologies have gradually matured, mobile intelligent transportation systems have begun to be widely used. In particular, the application of vehicular ad hoc networks (VANETs) is very convenient for real-time collection and analysis of traffic data. VANETs provide a great convenience for drivers and passengers, making it easier to choose routes. Currently, most research on VANETs obtains data through cloud servers. However, there are few studies on cloud servers obtaining vehicle information through the roadside unit (RSU). In the process of reading traffic information, there will be some private and sensitive information, which may be intercepted or tampered with in untrusted public channels. Therefore, it is necessary to propose a protocol to protect vehicle data during the information reading phase. In this paper, we propose a new provably secure authentication protocol to negotiate a session key before transmitting traffic information. This protocol can complete mutual authentication and generate a session key. Finally, security analysis and performance analysis show that our protocol is secure and efficient.
Highlights
Due to social and economic development, motor vehicles are rapidly spreading
In the VANETs, the vehicle is equipped with an on-board unit (OBU), so the vehicle can be regarded as a mobile network node that can communicate. erefore, the vehicle can obtain the corresponding road information from the cloud server through the RSU and can send the relevant information recorded by itself to the cloud server. e main goal of VANET technology is to improve traffic efficiency and increase driving experience
Before information transmission, mutual authentication must be performed, and a corresponding session key must be generated for subsequent information transmission
Summary
Due to social and economic development, motor vehicles are rapidly spreading. At the same time, the rapid increase in the number of vehicles on the road has made the traffic situation more complicated, and there will be many traffic problems, such as traffic accidents and road congestion. erefore, researchers apply artificial intelligence [1,2,3,4], wireless networks, and sensor technology [5, 6] to road vehicle management, so that vehicles can share information and release relevant road information to alleviate traffic problems. is is the vehicular ad hoc network, which consists of vehicle-to-vehicle (V2V) communication and vehicle-to-infrastructure (V2I) communication. Erefore, the vehicle can obtain the corresponding road information from the cloud server through the RSU and can send the relevant information recorded by itself to the cloud server. Before information transmission, mutual authentication must be performed, and a corresponding session key must be generated for subsequent information transmission. Several kinds of research in VANETs mainly focus on how to ensure that vehicles obtain corresponding road information. Based on our best knowledge, we propose a new provably secure mutual authentication scheme for negotiating session keys before transmitting traffic information in this paper. RSU actively sends a request, completes mutual authentication with the vehicle through the cloud server, and generates a session key.
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