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Trust-based Security Research in Wireless Sensor Networks

Author: ChengWei
Tutor: ChengLiangLun
School: Guangdong University of Technology
Course: Control Theory and Control Engineering
Keywords: Wireless sensor networks Trusted security Trust Management Dynamic key management TDMK
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 56
Quote: 1
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Abstract

Wireless sensor network (Wireless Sensor Networks, WSNs), due to the resource-constrained sensor nodes, poor network deployment environment, leading to more and more security problems of sensor networks. Key-based security solutions can effectively resist attacks from outside the network, but can not solve the internal node is captured attack; trust management solutions designed to solve the network internal attacks there is a natural advantage in solving the problem. How to combine the two to form complete security solutions is a key issue to be addressed in this article. At the same time, the existing trust management program focuses trust management framework design, while ignoring the trust management in energy consumption monitoring module makes existing trust there is the problem of excessive power consumption, security service QOS not. Therefore, on the basis of ensuring the quality of the trust management effectively reduce energy consumption, this paper to be one of the key problems. In response to these issues, the major work done in this article: 1, first do a simple description of the characteristics of the architecture of WSNs node structure and WSNs different from the traditional networks WSNs facing security threats and defense strategies analysis and summary, given the security goals should be considered in this particular network environment. 2, against the collusion problem WSNs state key distribution method, a dynamic key distribution scheme based on trust, the trust mechanism is introduced dynamic key management process, as judged by the captured node node trust value the basis for active surveillance captured node, and promptly expelled from the network key security system, to maintain the credibility of the key distribution environment dynamically. The simulation results show that the program is an effective solution to the collusion problem of network nodes. 3, analysis of the existing trust management scheme QoS that trust management solutions in energy consumption, scalability, communication load, computational complexity, there is large room for improvement, and on this basis, a Efficient trust management program. Random monitoring mechanism through the node, the node behavior data and complete trust synthesis and trust the trust value according to each node's current profile, and the trusted data applied to the the GEAR route selection process. The simulation results show that the program is to achieve the trust management security, but also to reduce the energy consumption of the system.

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