Secure Routing Protocol Research In Wireless Sensor Network

Wireless sensor network, which is the combination of sensor, computer and network, is a novel technology about information acquiring and processing. In wireless sensor network, nodes acquire data firstly. After processing the data, nodes send the data to sink node by different means, including radio frequency, infrared, etc. Man can make decisions based on the information collected by wireless sensor network.In this paper, we first introduce the basic concepts of wireless senor network and the related works on it. Then we analyze routing protocols in three categories: data-centric routing protocols, hierarchical protocols and location-based protocols, and summarize the attacks and countermeasures against those protocols.Based the principle of location-based protocols, we analyze the security of them, and introduce the related attack methods. Then we introduce the algorithms for position in wireless sensor network.After that, we propose one new location-based secure routing protocol, in which we compute the position of nodes by the cooperation of multiple nodes in the period of routing update. This protocol can is robust against attack methods such as wormhole attack and sybil attack. And we provide the details description and security analysis for this protocol.Finally, we give the implementation simulation by TinyOS and analyze the results. The results show that our protocol can detect malicious node efficiently.