Multifactor-based wireless sensor network trust management model

Abstract

The invention provides a multifactor-based wireless sensor network trust management model. The model is formed by a trust value computing layer, a trust value management layer and a trust value application layer. The trust value computing layer is basic and includes node direct trust value computing, bad cooperation value computing and energy factor computing. The trust value management layer is a core and comprises cooperation log sheet management, trust value management between nodes, node trust value initialization and trust value update. The trust value application layer is a purpose and comprises malicious node identification, credible node confirmation, low-energy node identification and credible route selection. The model is used for carrying out estimation on the trust value of nodes according to cooperation information between the nodes so as to rapidly identify malicious nodes in the network, balance expense of the nodes in the network and reduce unnecessary resource losses. Consequently, the problem of information leakage caused by internal nodes captured is avoided, and reliable, safe and continuous running of a wireless sensor network is guaranteed.

Description

technical field [0001] The invention relates to the research on trust management model based on multi-factors in wireless sensor network, specifically constructing a node trust management model according to the cooperation information stored in the cooperation record table between nodes. It belongs to the technical field of trust management in wireless sensor networks. Background technique [0002] With the continuous development and progress of wireless sensor technology, its application has become more and more complex. Due to its advantages of low cost and low pollution, it can solve the problems of environmental and ecological monitoring and traffic control in modern society. The role of sensor networks in social life is becoming more and more important. [0003] A wireless sensor network is a network composed of a group of sensors through Ad Hoc (Mobile Autonomous Network), and its purpose is to coordinate perception, reliable transmission and intelligent processing of...

AI Technical Summary

Problems solved by technology

Therefore, the security mechanisms in wireless networks such as Ad hoc cannot be directly applied to large-scale distributed wireless sensor networks.

Compared with Ad hoc and other networks, wireless sensor networks are more vulnerable and face more serious security challenges

And one of the obvious security problems is the internal attack that occurs when the sensor node is captured by the enemy. This has never occurred in Ad hoc and other networks, and it is also a problem that cannot be solved by the security mechanism based on the traditional cryptographic system.

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