To achieve the secure group communication in wireless sensor networks（WSN）

a EBS-based group key management scheme was presented.First

the network topology was simplified by combining the chain-clusters and the star-clusters.Next

to prevent the adversary uncover all the administrative keys by a few colluding sensors

the number of sensors needed to capture WSN was increased.Then

the sensors of key combinations distribution were sorted through a coloring algorithm.Based on all these operations

the presented scheme distributed the administrative keys based on the hamming distance and EBS.Furthermore

the approaches handling the join event and leave event were described.Two experiments were performed to study the potential for collusions and the influence of size of compromised nodes on the effectiveness against collusions.Simulation results demonstrate that the presented scheme boosts the WSN’ resilience to attacks.The performance evaluation on join event and leave event shows that the number of key-updating messages and storage of sensors in the proposed scheme are fewer than those of SHELL.