Date Added: Dec 2009
Multi-hop routing in Wireless Sensor Networks (WSNs) offers little protection against deception through replaying routing information. This defect can be taken advantage of by an adversary to misdirect significant network traffic, resulting in disastrous consequences. It cannot be solved solely by encryption or authentication techniques. To secure multi-hop routing in WSNs against intruders exploiting the replay of routing information, the authors propose TARF, a Trust-Aware Routing Framework for WSNs. Not only does TARF significantly reduce negative impacts from these attackers, it is also energy-efficient with acceptable overhead. It incorporates the trustworthiness of nodes into routing decisions and allows a node to circumvent an adversary misdirecting considerable traffic with a forged identity attained through replaying.