A key management and identity authentication method based on wireless sensor network

Abstract

The invention discloses a key management and identity authentication method based on a wireless sensor network, which comprises the following steps: S1, establishing a matrix M containing five-tuple information of a plurality of neighboring nodes; S2, establishing a matrix M containing five-tuple information of a plurality of neighboring nodes; S3, establishing a matrix M containing five-tuple information of the neighboring nodes. 2, judging whether that req node is included in the matrix M, if so, turning to S3, otherwise turning to S5; S3, judging whether the quintuple information of the requesting node is valid, if so, turning to S4, otherwise refusing communication; S4, the requested node and the requesting node authenticate through the key distribution center to generate a pairing key; S5, searching the relay node according to the respective communication areas of the requesting node and the requested node, and then repeating S3 to S4 between the relay node and the requesting node, and repeating S3 and S4 between the relay node and the requested node. The invention can achieve the purposes of reducing node resource storage consumption, improving forward and backward safety between nodes and resisting replay attack.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a key management and identity authentication method based on a wireless sensor network. Background technique [0002] Wireless sensor network is composed of a group of sensor nodes with limited resources. They cooperate with each other through wireless communication network in the form of ad hoc network, and have been widely used in many fields. The wireless sensor network integrates multiple technologies including sensor technology and wireless communication technology, and can realize real-time perception, collection, aggregation, and processing of various monitoring information in the distributed area collaboratively, and send them to users who need this information, thereby It enables users to realize the dynamic intelligent perception of the physical environment. [0003] In wireless sensor networks, the physical particularity of wireless communic...

AI Technical Summary

Problems solved by technology

The key pre-distribution scheme based on random probability needs to store a large number of invalid keys, which consumes a lot of resource storage; the key pre-distribution scheme based on location identity information requires a large amount of computing consumption and lacks a node authentication mechanism

[0006] The existing wireless sensor-based key management scheme still needs to consume a large amount of storage space to store useless keys in the key pre-distribution stage, and the overlapping of shared keys reduces the scalability of the network; when generating session keys / pairing When using keys, the authentication mechanism is not considered in time. The premise of generating paired keys between nodes is the legitimacy of the nodes; most key management solutions are based on static networks, and the efficiency of dynamic networks is low

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