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http://dx.doi.org/10.9717/kmms.2018.21.12.1448

A Reputation System based on Blockchain for Collaborative Message Delivery over VANETs  

Lee, Kyeong Mo (Interdisciplinary Program of Information Security, Graduate School, Pukyong National University)
Rhee, Kyung-Hyune (Department of IT Convergence and Application Engineering, Pukyong National University)
Publication Information
Journal of Korea Multimedia Society / v.21, no.12, 2018 , pp. 1448-1458 More about this Journal
Abstract
Vehicular Ad-Hoc Networks (VANETs) have become one of the active areas of research, standardization, and development because they have tremendous potentials to improve vehicle and road safety, traffic efficiency, and convenience as well as comfort to both drivers and passengers. However, message trustfulness is a challenge because the propagation of false message by malicious vehicles induces unreliable and ineffectiveness of VANETs, Therefore, we need a reliable reputation method to ensure message trustfulness. In this paper, we consider a vulnerability against the Sybil attack of the previous reputation systems based on blockchain and suggest a new reputation system which resists against Sybil attack on the previous system. We propose an initial authentication process as a countermeasure against a Sybil attack and provide a reliable reputation with a cooperative message delivery to cope with message omission. In addition, we use Homomorphic Commitment to protect the privacy breaches in VANETs environment.
Keywords
Blockchain; Identity Management; Reputation; Smart Contract;
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