A wireless sensor network key management method
A wireless sensor and network key technology, applied in the field of wireless sensor network key management, can solve problems such as limited computing power and storage capacity, dynamic changes in network topology, insufficient communication bandwidth, etc., to reduce search time and consumption, and improve security The effect of high performance and strong scalability
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[0017] The invention will be described in further detail below in conjunction with the accompanying drawings.
[0018] 1. Network formation stage:
[0019] see figure 1 , the present invention is divided into 5 steps in the network formation stage.
[0020] (1-1) Key pre-distribution:
[0021] The base station sets certain parameters and distributes the public key Q to all nodes (including all cluster head nodes and sensor nodes) i and private key S i , and exist in the node. The base station generates the initial shared key K i , preset in all nodes.
[0022] (1-2) Cluster head node election:
[0023] In order to ensure that the high energy consumption cost of data transmission is evenly allocated to all sensor nodes, we use the LEACH algorithm to elect cluster head nodes from all sensor nodes. The specific method is: each sensor node sequentially generates a random number between 0 and 1, and the first sensor node smaller than the threshold T(n) becomes the cluster h...
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