Abstract: Aiming at the problem of Sybil which attacks and destroys the resource allocation, routing discovery and data aggregation in ZigBee network, a scheme to detect Sybil attacks was proposed. The scheme established a doubt mechanism of Sybil node to mark child nodes in the same location as well as communication distance inconsistent geographical distance. The scheme designed a identified processes of Sybil node via father joint legal neighboring nodes transmitting a random number to the suspected Sybil nodes on different channels simultaneously, identifying Sybil nodes by its correctness. Safety analysis and experiment results show that the proposed scheme has high accuracy detection rate with low communication overhead and energy consumption when confronting Sybil attack in ZigBee network.

Key words: ZigBee network, Sybil attack, suspected Sybil node, geography position, wireless radio, parent-child relationship