关键词: 无线传感器网络, 虫洞攻击, 认证, 信誉评估

Abstract: In multihop wireless networks the need for cooperation among nodes to relay each other’s packets exposes them to a wide range of security attacks. A particularly devastating attack is known as the wormhole attack, creating a virtual link under attacker. This attack can form a serious threat in route establishment by preventing nodes from discovering routes that are more than two hops away. A novel mechanism is proposed for defending against wormhole attacks in wireless sensor networks. The proposed approach is completely localized and, unlike many techniques proposed in literature, does not use any special hardware artifact or location information, making the technique universally applicable. Simulation results show that the proposed approach provides effective protection against potentially devastating wormhole attacks.

Key words: wireless sensor networks, wormhole attack, authentication, reputation evaluation