Flexible Authentication in Vehicular Ad hoc Networks

TL;DR

This paper proposes differentiated authentication services for VANETs, addressing unique challenges like high mobility, real-time constraints, and privacy, by analyzing inter-vehicle and vehicle-to-roadside communication features.

Contribution

It introduces a novel approach to node authentication in VANETs tailored to communication types and privacy requirements, filling a gap in existing techniques.

Findings

Analysis of inter-vehicle and roadside communication characteristics

Design of differentiated authentication services based on privacy needs

Enhanced security and efficiency in VANET communications

Abstract

A Vehicular Ad-Hoc Network (VANET) is a form of Mobile ad-hoc network, to provide communications among nearby vehicles and between vehicles and nearby fixed roadside equipment. The key operation in VANETs is the broadcast of messages. Consequently, the vehicles need to make sure that the information has been sent by an authentic node in the network. VANETs present unique challenges such as high node mobility, real-time constraints, scalability, gradual deployment and privacy. No existent technique addresses all these requirements. In particular, both inter-vehicle and vehicle-to-roadside wireless communications present different characteristics that should be taken into account when defining node authentication services. That is exactly what is done in this paper, where the features of inter-vehicle and vehicle-to-roadside communications are analyzed to propose differentiated services for node authentication, according to privacy and efficiency needs.