关键词: Sybil攻击, 多路径, INSENS, 安全路由

Abstract: Sybil attacks can defeat many mechanisms of wireless sensor networks such as redundancy，multi-path routing etc.This paper proposes a scheme for constructing secure routing to bypass misbehavior nodes that launch Sybil attacks.Based on the routing mechanism used in INSENS，the method constructs two paths from the event region to base station，after the first path is built，uses the distances between the node and its neighbors and the location of the nodes in the first path to detect Sybil attacks，then constructs the second routing with bypassing misbehavior nodes which launch Sybil attacks.The simulation results show that the proposed method makes the routing bypass Sybil attacks，and computation，storage and energy consumption are lower than the method using keys sharing and identities certification.

Key words: Sybil attacks, multi-path, INSENS, secure routing