Cluster key management method capable of being used for wireless sensor network

Abstract

The invention provides a cluster key management method capable of being used for a wireless sensor network. Specific classification methods for clustering are not considered in the cluster key management method. Before deployment, nodes are initialized by a key management center, wherein relevant parameters and algorithms of each sensing node are set; after the whole wireless sensor network is clustered, a base station, cluster heads and intra-cluster nodes are formed; communication between the base station and the cluster heads and data transmission security are guaranteed through a compound matrix key, and the cluster heads and the intra-cluster nodes form an internal secure communication area; the cluster heads are in charge of secure data transmission of the intra-cluster nodes, when residual energy of the cluster head nodes is lower than a set threshold value, the conditions for becoming cluster heads are abandoned, the cluster head nodes become common nodes, and when residual energy of the common nodes is lower than a certain threshold value, algorithms and parameters in a chip are destroyed automatically. According to the method, key authentication under KMC control is not needed, calculation and communication cost is reduced, and bidirectional authentication is adopted for every two clusters.

Description

technical field [0001] The invention relates to a cluster secret key management method based on the combination of a composite public key matrix and a threshold secret key in a cluster wireless sensor network, and belongs to the cross-technical application fields of information security, computer network and distributed computing. Background technique [0002] A wireless sensor network consists of a large number of self-organizing, battery-operated sensors scattered throughout the work area. These sensors are embedded with various models, including data processing models, energy models, storage models, communication models, etc. These sensors can be used to monitor physical or environmental conditions in the network coverage area, such as temperature, sound, vibration pressure, motion or pollutants, etc., and transmit the data through network cooperation. In recent years, wireless sensor networks have been widely used in various fields and environments, such as military app...

AI Technical Summary

Problems solved by technology

The disadvantage of the algorithm is that the time must be highly synchronized and the storage redundancy caused by the delay of key release is relatively large; another multi-μTESLA method introduces the concept of a multi-level key ring, but the algorithm cannot lose packets; the MMμTESLA algorithm uses The concept of threshold encryption decomposes the authentication key into key slices and distributes them to multiple base stations. Sensor nodes use key slices to reorganize the authentication keys and broadcast them, but the number of base stations has become a new security issue

Another improved key management method is to use a one-way function to reduce the number of affected sensors without affecting the connection between adjacent sensor nodes, but this method still cannot resist and solve DoS attacks against ordinary nodes, and Derived Key Collision Problem

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