Dynamic clustering wireless sensor network cipher key management method

Abstract

The invention discloses a dynamic clustering wireless sensor network cipher key management method. The dynamic clustering wireless sensor network cipher key management method comprises steps that allnodes of a network are divided into three layers such as a base station, a cluster head node, and a common node according to node functions, and then a system network structure model is established; the parameters of the system network structure model are initialized to generate a cipher key, and at last, communication between the base station and the cluster head node, and the communication between the common node and the cluster head node are realized, and when the nodes are captured or energy is exhausted during the operation process of the network, the cipher key in the network is updated.The method provided by the invention is advantageous in that high safety performance is provided, and the common attacks of the wireless sensor network such as node forgery attacks, message replay attacks, and denial of service attacks are resisted, and at the same time, on aspects of network connectivity, storage overhead, and network power consumption, compared to conventional schemes, a largeadvantage is provided, and the method can be used in a large-scale layer cluster type wireless sensor network.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and relates to a dynamic cluster wireless sensor network key management method. Background technique [0002] Wireless sensor network (WSN) consists of a large number of sensor nodes, which can sense, store, receive and forward data, and have a wide range of applications in environmental monitoring, temperature monitoring, smart home and healthcare. With the increasing application of sensor networks, network security has become a key link that cannot be ignored. Wireless sensor networks are often deployed in more complex environments. After being randomly distributed to target areas, they are often in an unsupervised state. Therefore, in practical applications, data transmission channels and sensor nodes are more vulnerable to attacks, and most The traditional wireless network adopts a single key scheme, and the key authentication scheme, encryption and decryption algorithm in t...

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Problems solved by technology

Although both schemes have achieved good security performance, the communication overhead required by the former scheme is still large in the p

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