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Based on Wireless Sensor Networks Security Technology

Author: WangYiLin
Tutor: LiTieYing
School: Taiyuan University of Technology
Course: Control Theory and Control Engineering
Keywords: Wireless Sensor Networks Routing Protocol LEACH protocol Leach - EP protocol Key management IBE algorithm
CLC: TN918.82
Type: Master's thesis
Year: 2011
Downloads: 119
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Abstract

With the development of electronic technology, computer technology and communication technology multidisciplinary, wireless sensor networks become a new information acquisition platform. Its the falling cost of microprocessors smaller and smaller, so a large number of wireless sensor networks began to put into use gradually potential in military, aerospace, industrial, commercial and other fields. Wireless sensor network is composed of a self-organizing network system by a large number of micro sensor nodes, the routing protocol is one of the core technology of wireless sensor network layer. Traditional LEACH protocol is a protocol for wireless sensor networks with load balancing features the LEACH protocol from the network structure, characteristics were described and analyzed. However, the typical clustering routing protocol LEACH, a good solution to the energy consumption of the sensor network routing protocol, but it is still there is a clustering algorithm did not consider the specific location of the node, easy to consume energy in data transmission , clustering uneven. This paper presents improved the leach-EP agreement, the agreement will change the single cluster head to cluster head, the standby cluster head mechanism to solve the problem of frequent clusters, not only able to extend the working time of each round cluster, and reduce re-clustered the frequency and the loss of information rate. Improvement of LEACH cluster head election algorithm deficiencies, thus effectively improve the energy consumption of the cluster head election algorithm to achieve balanced energy consumption of the whole network and energy conservation, thereby extending the lifetime of the network purpose. Experimental results show that, the Leach-EP protocol compared to traditional LEACH protocol effectively save node energy Leach-EP agreement will extend the network lifetime by 46%. Wireless sensor networks compared with the traditional Ad Hoc networks, wireless communication networks, with more stringent safety performance requirements. Security issues in wireless sensor networks, key management is one of the most important and most basic part of the primary problem is the key of the secure transmission of data between the guaranteed node. Key management, including key distribution and node communication key negotiation process. This is key management for wireless sensor networks are introduced and studied. Wireless sensor networks, traditional key management scheme in WSN is difficult to be applied, the summary and analysis of the existing key management schemes, proposed a new key management scheme. This article describes the IBE algorithms based on elliptic curves in WSN key management node asymmetric encryption key management scheme IBE algorithm, and computational load, communication load, network node is captured resistance, network scalability and other aspects of their performance. The results showed that the key establishment stage asymmetric key system based on elliptic curves differ for each node communication key, to reduce computing costs, improve network security connectivity purposes, but also to prevent information tampering and forgery attack node.

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