Software-Defined Vehicular Networks (SDVN)

In order for the Vehicular Ad Hoc Networks (VANETs) environments to be able to provide such useful road services, large amounts of data are generated and exchanged among the various communicated entities wirelessly via open channels in these vehicular networks. This attracts adversaries and threatens the network with a variety of potential types of security attacks. In this paper, we focus on blockchain-based security schemes while demonstrating the effectiveness of blockchains in the VANET context. Following a thorough introduction to VANET and blockchain, a comprehensive list of security needs, difficulties, and potential threats in vehicle networks is presented. Then, with a thorough comparative assessment of the method-ologies utilized, network models, evaluation tools, and attacks mitigated, a more in-depth review of modern blockchain-based authentication systems in VANETs is offered. Finally, several potential issues with VANET security are presented that will need to be resolved in future studies.