Volume 18, No. 6, 2021

A Threshold Based Authentication Mechanism For Vehicular Ad Hoc Network (Vanet)

Dr. B. Karthikeyan


Since Vehicular ad hoc networks (VANETs) are vulnerable to various kinds of attacks, there is a need to fulfill the security requirements like message privacy, integrity, and authentication. The authentication technique is said to be efficient if it detects compromised nodes accurately with less complexity, reduced authentication delay, and keying overhead. In this paper, a threshold-based authentication scheme for cluster-based VANETs is proposed. The vehicles are clustered, and the threshold degree of each node is estimated. The threshold degree is a combination of direct threshold degree and indirect threshold degree. Based on this estimated threshold degree, cluster heads are selected. Then, each vehicle is monitored by a set of verifiers, and the messages are digitally signed by the sender and encrypted using a public/ private key as distributed by a threshold authority and decrypted by the destination. This verifies the identity of sender as well as receiver thus providing authentication to the scheme. By simulation results, we prove that the proposed technique provides high security with less overhead and delay.

Pages: 7516-7531

Keywords: Vehicular Ad Hoc Network, Clustering, Threshold Authentication, Threshold Authority, Monitoring.

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