Bridge-type-based wireless sensing network key management scheme

Abstract

The invention relates to a bridge-type-based wireless sensing network key management scheme. The bridge-type-based wireless sensing network key management scheme includes the following steps that firstly, key pre-allocation is carried out, and namely allocation information is preset onto each sensor node by a starting server before node deployment; secondly, in the clustering phase, after cluster head nodes are selected, the clustering phase begins immediately, and each sensor node is added to the corresponding nearest cluster in the clustering process; thirdly, in the neighbor node discovery phase, whether other nodes are to be recorded as neighbor nodes or not is determined by each sensor according to the included angle calculation formula; fourthly, intra-cluster matched keys are built, wherein matched keys between each sensor node and other neighbor nodes are worked out through the bridge type; fifthly, inter-cluster matched keys are built, wherein matched keys between each cluster head node and other cluster head nodes are worked out through symmetric bivariate polynomials. By means of the scheme, on the premise that a certain connection rate is guaranteed, information transfer safety and effectiveness can be guaranteed, and the memory space of a memory is well saved.

Description

technical field [0001] The invention relates to a network key negotiation method, in particular to a bridge-based wireless sensor network key management method, which belongs to the field of network communication security. Background technique [0002] Wireless Sensor Networks (Wireless Sensor Networks: abbreviated as WSN, hereinafter collectively referred to as wireless sensor network) is a wireless network composed of numerous miniature sensor nodes in an autonomous networking manner. The wireless sensor network integrates sensor technology, network technology, micro-electromechanical technology, embedded system technology and wireless communication technology, etc., and can collaboratively perceive, collect and process information of various environments or monitoring objects in the distributed area in real time, and through The wireless network transmits to the base station. The inherent characteristics of sensor nodes determine that wireless sensor networks have the fo...

AI Technical Summary

Problems solved by technology

But its shortcomings are also obvious: on the one hand, it lacks flexibility in application, and on the other hand, the calculation and communication overhead generated during the key agreement process is relatively large.

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