Timestamp based detection of sybil attack in VANET

VANET is a subset of MANET in which communication among the vehicles may be done using vehicle-to-vehicle or roadside infrastructure. But there may be chances of attacks in VANET due to mobility of nodes and random change in topology. One of the prominent attack is Sybil attack in which attacker creates multiple false identities to disturb the functionality of VANET. In literature many solution have been proposed for detection and protection of vehicles from Sybil attack. In the current work, authors have proposed a Sybil node detection technique based on timestamp mechanism. In this work timestamp is a unique certificate provided by RSU to all vehicles on the road in VANET. In the proposed work for node discovery and data transmission, we used Ad-hoc On Demand Distance Vector (AODV) Routing protocol and timestamp as a hash function of public key and for detection of the Sybil node implemented through NS2 simulator. © 2020 Femto Technique Co., Ltd.