A Traceable Blockchain-Based Access Authentication System With Privacy Preservation in VANETs

Dong Zheng,Shiyao Gao,Liang Wang,Chunming Jing,Rui Guo

doi:10.1109/access.2019.2936575

Abstract

The vehicular ad-hoc networks (VANETs) is one of the most promising application in the communications of smart vehicles and the smart transportation systems. However, authentication and privacy of users are still two vital issues in VANETs. It is crucial to prevent internal vehicles from broadcasting the forged messages while preserving the privacy of vehicles against the tracking attack. Moreover, in the traditional mode, the transactional data storage provides no distributed and decentralized security, so that the third party initiates the dishonest behaviors possibly. In this paper, based on blockchain technique, we propose a traceable and decentralized the Internet of Vehicle system framework for communication among smart vehicles by employing of a secure access authentication scheme between vehicles and RoadSide Units (RSUs). On the one hand, this scheme allows that vehicles employ pseudonyms for Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communications anonymously in the non-fully trusted environment. On the other hand, the transparency of vehicles in authentication and announcement is preformed efficiently by the blockchain technology. In addition, the transaction information is tamper-resistant that provides the distributed and decentralized property for the different cloud servers. With the help of Certificate Authority (CA) and the RoadSide Units (RSUs), our proposal achieves the conditional privacy to trace the real identity of the malicious vehicle in the anonymous announcements as well. Finally, through the theoretical analysis and simulations, our scheme is able to construct a secure and decentralized system framework of VANETs with accountability and privacy preservation.

Highlights

With the rapid development of urbanization, the smart city has attracted extensive attention in both academia and industry
The decentralized framework proposed in this paper provides reducing Certificate Authority (CA) dependency, authentication with minimal overheads, data storage scheme for vehicular announcement and preserves vehicle privacy
Based on the proposed system framework, we design a secure access authentication scheme between vehicles and roadside units, which reduces the dependence of the Certificate Authority, provides the accountability audit of malicious vehicles, and realizes the privacy protection of vehicles

Summary

INTRODUCTION

With the rapid development of urbanization, the smart city has attracted extensive attention in both academia and industry. Chuang et al [23] presented a privacy preservation authentication scheme (PPAS) for communication between vehicle and infrastructure in VANETs, which achieved the vehicle and the RSU to authenticate each other and satisfied most of the security requirements This scheme provides no distributed system and is used to communicate with vehicles. The decentralized framework proposed in this paper provides reducing CA dependency, authentication with minimal overheads, data storage scheme for vehicular announcement and preserves vehicle privacy. Based on the proposed system framework, we design a secure access authentication scheme between vehicles and roadside units, which reduces the dependence of the Certificate Authority, provides the accountability audit of malicious vehicles, and realizes the privacy protection of vehicles. Our scheme is practical and simple whiling ensuring security, and has the characteristics of decentralization, conditional privacy, security authentication and trusted communication

ORGANIZATION The remainder of this paper is organized as follows

OUR STRUCTURE OF SYSTEM FRAMEWORK

ANNOUNCEMENT OF VEHICLE

Findings

CONCLUSION