Abstract
A mobile ad-hoc network (or simply a MANET) is a type of infrastructure-less as well as wireless network. MANET depends mainly on mobile nodes for its functionality. Since nodes are mobile and distributive in nature and also communicating devices or nodes are resource-restricted and equipped with micro or bio sensors to acknowledge the signals where only traditional security systems based on cryptography and encryption are not sufficient for promising level security assurance. Hence in this paper we explore trust and security challenges to improve security assurance for MANET. In winding up, we put our efforts to present a secure trusted model to influence the security assurance and significant adaptation of trustworthy communication. We propose a trust computation metric based on node's impulsive behavior to become malicious in dynamic scenario and proposed algorithms for trust evaluation of every node. Here we proposed a trust based security model (TSRM) for authenticating the new nodes as well as the nodes which are active in current communication network. TSRM captures the evidence of trust worthiness for other nodes from the security model and in return assists them to make better security decision. Unlike other trust model TSRM captures recommendation from neighboring nodes also. Then we have integrated the TSRM into the existing Dynamic Source Routing (DSR) protocol. The performance of TSRM is evaluated by comparing the simulation result of it with the existing DSR.
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