Region Authority (RA) Collaborated Certificate Organization and Management in VANET

Vehicular ad hoc networks (VANETs) are receiving increasing attention from academics due to the various applications and potential tremendous benefits they offer for future VANET users. Safety information exchange enables lifecritical applications, such as the alerting functionality during medical emergencies, and thus, plays a key role in VANET applications. In a VANET, vehicles rely on the integrity of receiving data for deciding when to present alerts to drivers. The communication between car to car, car to the roadside unit done through wireless communication. That is why security is an important concern area for vehicular network application. For authentication purposes large amount of bandwidth is consumed and the performance becomes low. In VANET some serious network attacks such as man in the middle attack, masquerading is possible. In this paper various previous researches done in this area are analyzed and compared on the basis of drawbacks of those approaches. After that the different issues on VANET are discussed and finally conclude with proposed idea. Keywords-Security, Region authority (RA), on board unit (OBUs), certificate revocation lists (CRLs).