Research On Privacy Protection Mechanism In Wireless Sensor Network

In recent years, wireless sensor network is developing rapidly, and has gained more and more widely used in military, healthcare, education, environmental protection and other fields. Wireless sensor network is based on the technology of sensor, wireless communication and information processing, and its purpose is collecting data information in coverage area, real-time monitoring the monitor objects. Privacy protection issues in wireless sensor network have a critical significance in its research and development, and have become a research hotspot. Due to the distribution and resource finiteness of wireless sensor network, the researches on privacy protection issues are facing severe challenges.This thesis makes a deep research on the privacy protection technology in wireless sensor network, and proposes three algorithms for privacy protection in wireless sensor network. Firstly, aiming at the source node location privacy problem, a source node location privacy protection routing protocol is proposed. By using methods of dividing forwarded regions directionally and selecting relay nodes randomly, the ability that the source nodes withstand reverse tracking attacks and location analysis attacks is improved. This algorithm has better performance in safety, low energy consumption and high transmission rate. Secondly, aiming at the sink node location privacy problem, a sink node location privacy protection routing protocol is proposed. By using the methods of generating false packets in the probabilistic and setting false sink nodes, so as to disrupt the attacker to tracking the location of the sink node. This algorithm has the advantages of low energy consumption, low network delay, and high data delivery rate. Finally, aiming at the data privacy protection problems, a data privacy protection strategy is proposed, and the data privacy protection is achieved by using the method of hierarchically encryption and data aggregation algorithm. It can enhance the ability to resist the typical data privacy attack greatly.This thesis introduces the relevant background knowledge of wireless sensor network at first. After that, the issues of source node location privacy protection are researched, and a dynamic routing algorithm based on fan-shaped area is proposed. Then, the issues of sink node location privacy protection are researched, and a dynamic routing algorithm of sink node location privacy protection based on the security area is proposed. Thereafter, the issues of data privacy protection are researched, and an effective data privacy protection routing protocol based on scalable data aggregation is proposed. Finally, the full content of the thesis is summarized, and the existing problems and future research directions of privacy protection are pointed out.