An Improved Key Distribution Method in Large Hierarchical Wireless Sensor Networks

Abstract

An improved key distribution method in a large layered wireless sensor network relates to the technical field of wireless ad hoc networks, in particular to an improved key distribution mechanism for establishing a secure layered wireless sensor network. Aiming at the problem of large key storage and communication overhead in the traditional key pre-distribution mechanism, the present invention proposes to use an improved key distribution mechanism to ensure a complete network connection. Since wireless sensor networks are usually deployed in harsh environments and unattended modes of operation, to protect sensitive data and sensor readings, secret keys should be used to encrypt the information exchanged between communicating nodes. The invention uses a layered network model and a binary polynomial key generation mechanism. No matter how many sensors are destroyed, the IKDS ensures that the communication parties can establish a unique paired key between each other. This improved key distribution mechanism reduces key storage and communication overhead, increases security, and enhances the overall stability of network data transmission. The invention is applicable to the technical field of large-scale layered wireless ad hoc networks.

Description

technical field [0001] The invention relates to the technical field of large-scale layered wireless ad hoc networks, in particular to an improved key distribution method for establishing a secure layered wireless sensor network. Background technique [0002] In recent years, with the improvement of microelectromechanical systems (MEMS) technology, large-scale wireless sensor networks have been widely used in various scenarios, such as object tracking, environmental monitoring, and data acquisition. Usually, a wireless sensor network is composed of a large number of sensor nodes, and each sensor node is a small, cheap wireless device with limited battery power, storage space, data processing capability, and short wireless transmission range. Depending on the sensing units equipped, wireless sensor nodes can measure various physical properties such as sound, temperature, pressure, etc. Many wireless sensor nodes are organized into clusters to track specific objects or monitor...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the traditional key distribution mechanism in the existing large-scale layered wireless sensor network environment has large key storage and communication overhead and poor overall stability of network data transmission, which seriously affects the security performance of the network.

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