Research On Detection Of Cross-layer Attacks In Wireless Sensor Networks

As a newly developed technology of wireless network,the Wirelss Sensor Network has a broad prospect of development and application.However,its limited energy,less computing and storage capabilities,restricting the further development of its own.At present,the attack and defense technology in WSN are constantly progressing and developing together.For the attacker,the traditional single attack under the new attack detection technology has been unable to meet the performance of emerge in an endless stream of demand,therefore,a new means of attack: cross-layer attack has came into being.At the same time,the corresponding attack detection technology is also in the continuous development and progress,research on the detection scheme based on traffic prediction,statistical model and trust model and so on are vary,every kind of detection scheme have their unique performance advantages.However,the development of detection technology of cross-layer attacks currently used in WSN is still in the initial stage,there are main two aspects of existing problems lies in the detection system,first is the existing attack detection technology is difficult to adapt to the special application scenario of WSN,energy and limited computing resources;second is the existing attack detection technology are mostly focusing on a specific means of attack,to attack the poor performance of cross layer detection.In view of the above problems of WSN security,this paper mainly does three aspects of work.First,this paper analyzed and summarized the characteristics and security threats faced by WSN based on existing research results,summarizes the definition and characteristics of cross-layer attack's performance and characteristics combined with the related research,and redefines the cross-layer attack in a more exact way.This paper also models several typical kinds of cross-layer attack using the colored sequense diagram,and analyzes the process and features of the cross-layer attack.Second,according to the existing WSN cross layer attack detection technology,this paper designs a new trust model based on WSN cross layer attack detection system,evaluating the trust value according to the behavior deviation of nodes,and measuring the various behaviors of nodes in each protocol layer.The overall node trust value is used as the basis for the legitimacy decision.The experimental results show that compared with the existing similar detection system,the detection performance of the system has been more comprehensive and significant improvement.Third,according to the characteristics of WSN,this paper using the game theory to analysis Attack Game Model for Game Analysis on both sides adopting different strategies of cost and income.Based on this model,the Nash equilibrium theory is used to calculate the mixed strategy Nash equilibrium solution of the two parties under the model,which is the optimal strategy under the WSN attack and defense scenario.The simulation experiments show that the attack detection system based on this strategy can save WSN energy consumption greatly on the basis of maintaining the original detection performance.