This Wireless sensor networks will be mapped to the matrix, the points on the matrix form different clusters, cluster heads according to their load and communication cost make the sensor cluster, the cluster key space corresponds with the set of key pool one to one, the sensor nodes select keys from the key subset which they belong to, establishing shared key with the cluster nodes easily. Nodes in different clusters between clusters can point to something within the matrix east, west, south, north, southeast, northeast, southwest, northwest of radiation to establish a shared key. The paper presents a wireless sensor networks key management scheme based on cluster radiation matrix, which has great scalability and anti-destroying ability.
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