Date Added: May 2013
In Vehicular Ad Hoc NETworks (VANET), trust establishment among communicating vehicles is important to be built to secure messages' exchange and reliability. In this paper, the proposed scheme presents a categorized decentralized trust management evaluation scheme for nodes in vehicular ad hoc environments. Each node is evaluated individually according to its interactions during event reporting. Based on this evaluation, a node is assigned a category level (according to its trust value) and a confidence measure, which determines the degree of trustworthiness of nodes' generated reports during broadcasting.