Sybil attack detection technique using session key certificate in vehicular ad hoc networks

The basic need of Mobility is much needed for social and economical development. Intelligent Transportation Systems (ITSs) are predicated to play a considerable role in future and provide safer and efficient transportation. The Adhoc Network formed is an VANET, an emerging standard, for communication between mobile vehicles and mobile/fixed devices. The technologies like Wi-Fi, Bluetooth components are integrated with other mobile connectivity protocols for feasible data transfer between road side equipment and automobile traffic. The most important feature of VANET is Security. Without security, VANET is exposed to several threats, among which one of the threat is Sybil attack. One of the robust secure mechanism adopted is a cryptographic digital signature used to establish the faith between the various participating entities.