Approach to Preserve Location Privacy Against Sybil Attack in VANETs

Vehicular Ad hoc NETworks (VANETs) have the potential applications that significantly improve road safety and dramatically regulate the traffic. Security and Privacy are two noteworthy concerns in VANETs. However, many privacy preserving methods in VANET are susceptible to Sybil attacks. The Sybil attacker impersonates as multiple benign vehicles for gaining a disproportionately large influence. The conventional pseudonym generation schemes preserve the privacy and also facilitate the identification of Sybil attacker. To detect the Sybil attack with location privacy preservation, this research work proposes three types of defense mechanisms named as Privacy through Anonymous Beacon (PLPAB), Sybil Attack Resistant Location Privacy (SARLP), and SYstem for detecting misBehavIng vehicLes with loCAtion Privacy (SYBIL-CAP).