Abstract
Over the past years, vehicular ad hoc networks (VANETs) have been commonly used in intelligent traffic systems. VANET's design encompasses critical features that include autonomy, distributed networking, and rapidly changing topology. The characteristics of VANET and its implementations for road safety have attracted considerable industry and academia interest, particularly in research involving transport systems enhancement that could potentially save lives. Message broadcasting in an open access system, such as VANET, is the main and utmost challenging problem with regard to security and privacy in VANETs. Various studies on VANET security and privacy have been proposed. Nevertheless, none has considered overall privacy requirements such as unobservability. In order to address these shortcomings, we propose a VANET based privacy-preserving communication scheme (VPPCS), which meets the requirements for content and contextual privacy. It leverages elliptic curve cryptography (ECC) and an identity-based encryption scheme. We have carried out a detailed security analysis (burrows-abadi-needham (BAN) logic, random oracle model, security of proof, and security attributes) to validate and verify the proposed scheme. The analysis has shown that our scheme is secure and also shown to be effective in a performance evaluation. The proposed scheme does not only meet the previously mentioned security and privacy requirements, but also impervious to various types of attacks such as replay, impersonation, modification, and man-in-the-middle attacks.
Highlights
As the design of wireless communication technology and network systems is continuously and rapidly progressing, vehicular ad hoc networks (VANETs) have regained attention and interest in support of wireless vehicles in communicating with other vehicles and roadside units (RSUs) to guarantee traffic safety and improve driving experience [1]–[3]
In order to prevent message modification done for malicious intents from being transmitted to RSUs or near vehicles, VANET architecture should include traceability component, similar to the ones used by wireless network operators
We argue that vehicular communication systems should be resolved by complying with all privacy requirements
Summary
As the design of wireless communication technology and network systems is continuously and rapidly progressing, vehicular ad hoc networks (VANETs) have regained attention and interest in support of wireless vehicles in communicating with other vehicles and roadside units (RSUs) to guarantee traffic safety and improve driving experience [1]–[3]. The privacy of content ensures that sensitive information associated with the vehicle against inappropriate and unauthorized disclosure This alone is not sufficient because an attacker can still identify the vulnerabilities of the vehicle. In order to prevent message modification done for malicious intents from being transmitted to RSUs or near vehicles, VANET architecture should include traceability component, similar to the ones used by wireless network operators. The trusted authority (TA) is the only party that can extract the true identity of the vehicle As discussed, these current schemes have limitations, and none of them have considered the requirements of privacy. A comprehensive security and privacy analysis is performed to demonstrate that the proposed scheme can withstand various attacks and satisfy the VANET security and privacy requirements.
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