Puthal, D, Malik, N, Mohanty, SP, Kougianos, E & Das, G 2018, 'Everything You Wanted to Know about the Blockchain: Its Promise, Components, Processes, and Problems', IEEE Consumer Electronics Magazine, vol. 7, no. 4, pp. 6-14.View/Download from: UTS OPUS or Publisher's site
© 2012 IEEE. In 2008, the emergence of the blockchain as the foundation of the first-ever decentralized cryptocurrency not only revolutionized the financial industry but proved a boon for peer-to-peer (P2P) information exchange in the most secure, efficient, and transparent manner. The blockchain is a public ledger that works like a log by keeping a record of all transactions in chronological order, secured by an appropriate consensus mechanism and providing an immutable record. Its exceptional characteristics include immutability, irreversibility, decentralization, persistence, and anonymity.
Malik, N, Nanda, P, Arora, A, He, X & Puthal, D 2018, 'Blockchain Based Secured Identity Authentication and Expeditious Revocation Framework for vehicular Networks', IEEE Computer Society, IEEE International Conference On Trust, Security And Privacy In Computing And Communications, IEEE, New York.View/Download from: UTS OPUS or Publisher's site
Authentication and revocation of users in Vehicular Adhoc Networks (VANETS) are two vital security aspects. It is extremely important to perform these actions promptly and efficiently. The past works addressing these issues lack in mitigating the reliance on the centralized trusted authority and therefore do not provide distributed and decentralized security. This paper proposes a blockchain based authentication and revocation framework for vehicular networks, which not only reduces the computation and communication overhead by mitigating dependency on a trusted authority for identity verification, but also speedily updates the status of revocated vehicles in the shared blockchain ledger. In the proposed framework, vehicles obtain their Pseudo IDs from the Certificate Authority (CA), which are stored along with their certificate in the immutable authentication blockchain and the pointer corresponding to the entry in blockchain, enables the Road Side Units (RSUs) to verify the identity of a vehicle on road. The efficiency and performance of the framework has been validated using the Omnet++ simulation environment.
Nanda, P, Malik, N & Puthal, D 2017, 'An Overview of Security Challenges in Vehicular Ad-Hoc Networks', IEEE Explore, 16th International Conference on Information Technology (ICIT), Bhubaneswar, India.View/Download from: UTS OPUS
Vehicular Ad hoc Networks (VANET) is emerging as a promising technology of the Intelligent Transportation systems (ITS) due to its potential benefits for travel planning, notifying road hazards, cautioning of emergency scenarios, alleviating congestion, provisioning parking facilities and environmental predicaments. But, the security threats hinder its wide deployment and acceptability by users. In this paper, we give an overview of the security threats at the various layers of the VANET communication stack and discuss some of the existing solutions, thus concluding why designing a security framework for VANETS needs to consider these threats for overcoming security challenges in VANETS.