Date of Publication :29th April 2016

Abstract: In a Vehicular Ad Hoc Network (VANET), node trustworthiness in packet forwarding is required for the network to function properly. The trustworthiness of the messages is decided upon using sensors. Only if the event is thought to be prevalent, the trust opinion generator announces this event to the applications. First, a node checks whether the event is in its own detection range. If not the decision is made on either the rule of majority or on the trust levels already assigned to the nodes. In case the event is not prevalent, the proposed algorithm also sends a malicious intent information packet in order to inform the neighbour nodes about the detection of a malicious activity. The proposed algorithm is better equipped to handle such attacks. It can detect at least such attacks if the node is itself in the detection range. It eliminates attacks pertaining to false event generation completely by utilizing the plausibility of data collected through sensors as well as the trust value of the sending nodes. The cluster based attack detection and communication is contributed. This scheme applies the attacker detection mechanism only at cluster head node hence it reduces the overhead.

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