Security Research Of En-Route Node In Wireless Sensor Networks

Wireless sensor network (WSN) is composed of a lot of miniature cheapsensor nodes which is deployed in monitoring area. The nodes through the plane orshells to launch scatters observer can’t or not for easy access to the area. As thenetworks are often deployed in public or not safe environment, the sensor node isunder attack, capture and the destruction of the potential threat all the time.Therefore, the research of wireless sensor networks security appears especiallyimportant.This paper focuses on two kinds of attacks: False data injection attack andSelective discarding attack. In view of these two attacks, we present enhanceden-route scheme for filtering false data injection in wireless sensor networks (EEF)and detecting selective discarding attacks scheme (DSDA).First, the paper introduces the concept, characteristic and the system structureof WSN, briefly introduces security against type and defense measures, and mainlyintroduces the characteristics of false data injection attack and selective discardingattack.Second, the paper introduces enhanced en-route scheme for filtering false datainjection in wireless sensor networks (EEF). This scheme uses filter technology todetect data packet. En-route nodes deliver packet, at the same time test data of thelegitimacy and drop false data. On the way of the nodes under the condition of thedamage, start enhancement scheme, using backup of the node keys, to verify thecorrectness of the transmitted data, filter out false data, and reduce energyconsumption. Due to incomplete false data, MAX_FALSE parameter is proposed tosolve the influence of incomplete false data on the BS receiving data. In addition tothe way the malicious node launch selective attack, we present detecting selectivediscarding attacks scheme. Neighbor detection node through listen the condition offorwarding nodes, to determine whether to start the function of initial nodes should not only listening forwarding node whether or not forward packets and monitor thatneighbor detection node is complete or not forward packets function the conditionof forwarding nodes refused to forwarding. As collecting a certain number of alarminformation, BS node through the routing protocol routing adjustment, thereconstruction of the path to avoid malicious node, making it receives the right data.At last, these tests are proposed algorithm in simulation environment.Experiments show that EEF and DSDA Can withstand the false data attack andselective forsake attack, and to ensure that the data correctly passed to a BS node. Inenergy consumption, safety of than other algorithm has superiority.