PRIVACY-PRESERVING AUTHENTICATION SCHEME FOR VANETS IN DIGITAL ECONOMY

As the use of smart vehicles is increasing day by day, issues such as privacy and authentication are also being faced by VANETs. To address these problems, a blockchain technique is used. This paper covers a linkable and decentralised architecture of the Internet of Vehicles system for the contact between smart vehicles by using blockchain for safe access verification among vehicles and roadside units (RSUs). As the concept of distributed storage and cloud computing is introduced with blockchain, the reason behind using distributed technology is to shift the trust from a single third party such as a central authority (CA) towards a decentralised approach. But still, most of the models rely on a single party CA or any other third party, and in most of the cases data is not decentralised, due to the trust issue that may arise under such conditions. Also, when a vehicle broadcasts any message in the network, the authentication process is fully dependent on a single RSU. If an RSU fails, then there is no security about the accurate delivery of messages. Due to that, any malicious user can take part in the network. Centred on the blockchain, this scheme offers a privacy-preserving authentication mechanism between vehicles. A comparison table between different features of VANETs is also made. The future of vehicles is dependent on technology and it will enhance the rise of the digital economy.