Position Verification Approaches for Vehicular Ad Hoc Networks

Abstract

Abstract-Inter-vehicle communication is regarded as one of the major applications of mobile ad hoc networks (MANETs). Compared to MANETs, these so called vehicular ad hoc networks (VANETs) have special requirements in terms of node mobility and position-dependent applications, which are well met by geographic routing protocols. Functional research on geographic routing has already reached a considerable level, whereas security aspects have been vastly neglected so far. Since position dissemination is crucial for geographic routing, forged position information has severe impact regarding both performance and security.In this work, we first analyze the problems that may arise from falsified position data. Then, in order to lessen these problems, we propose detection mechanisms that are capable of recognizing nodes cheating about their location in position beacons. In contrast to other position verification approaches, our solution does not rely on special hardware or dedicated infrastructure. Evaluation based on simulations shows that our position verification system successfully discloses nodes disseminating false positions and thereby widely prevents attacks using position cheating.

Survey On Security Issue in Vehicular Ad Hoc Networks (VANET)

“…VANET is a kind of Mobile Ad Hoc Networks (MANET) with some differences, like [1] Limitation in Power: in MANET, power constraint is one of the most important challenges which has shadowed all other aspects namely routing, fusion, on the other hand in VANET, huge battery is carried by the vehicle (i.e. car's battery), so, energy consumption is not a salient issue, [2] Moving pattern: which is random in the MANET while vehicles tend to move in an organized fashion in VANET, and [3] Mobility: there is high mobility in the VANET in comparison to MANET. However, selforganization and lack of infrastructure are similarities between MANET and VANET.…”

“…[2] The communication between the vehicles is prone to frequent fragmentation. [3] Rapid change in link's connectivity cause many paths to be disconnected before they can be utilized. [4] There is no constant density in VANET, as in highways high density and in the rural low there is density.…”

“…To achieve these goals vehicles acts as sensors and inform each other about abnormal and potentially hazardous conditions like accident, traffic jams and glazes [2], [4], [5], [6], [8]. Vehicular networks closely resemble ad hoc networks because of their rapidly changing topology; [2], [3], [5], [7], [8] therefore; VANETs require secure routing protocols. "Numerous Applications are unique to the vehicular setting.…”

“…"VANETs, especially compared to MANETs are characterized by several unique aspects. Nodes move with high velocity, resulting in high rates of topology changes" [3]. "Because of rapidly changing topology due to vehicle motion, the vehicular network closely resembles an ad hoc network.…”

Architecture for Secure and Private Vehicular Communications

“…A range of security mechanisms not cited above have been proposed proposed. For example, [12] detects malicious data and [21] validates position data; communication security proposals in [29], [20], [13]; privacy enhancing mechanisms [28], [22], [9]; the effectiveness of changing pseudonyms to provide location privacy in vehicular networks is analyzed in [6].…”