Research Of Wireless Sensor Network Security Based On Digital Watermarking

Wireless sensor network consists of a large number of micro-sensors deployed in the monitoring area,by the wireless communication network,to achieve the specific information on the monitoring area perception,processing and transmission functions.At present,wireless sensor networks have a wide range of applications in many fields,including smart home,mobile communications,construction and transportation.This is followed by security issues.Wireless sensor network security involves many aspects,which mainly includes the sensor node data integrity certification and privacy protection needs.Sensor nodes are often deployed in the danger area,thus there are threats that are physical captured and implemented by other malicious attacks.Sensors are generally low cost,both computing and storage capacity weakly,and limited energy supply,making nodes unable to have complete defensive capability.The main energy consumption of wireless sensor networks is used for wireless communication,so that traditional cryptography can not get a good application,digital watermarking method can achieve lower cost certification and protection,to meet the security needs of the sensor network,and does not add additional transmission information,and can effectively save the communication energy consumption.Therefore,this paper presents two wireless security detection algorithms based on digital watermarking:First,a digital watermarking algorithm based on sampling time interval and its application in cloned node attack detection is proposed.The watermark information is generated by the receiver to analyze the watermark information of the node for a period of time in a statistical way,and the security state of the network is detected by using the frequency of the sensor node data transmission as the characteristic quantity.Second,a digital watermarking node authentication algorithm based on single-cycle T-function is proposed.In order to solve the problem of node authentication caused by packet loss,the digital watermarking algorithm is generated by using the single-cycle T-function with higher linear complexity.The basic idea of the above algorithm is that the corresponding digital watermarking scheme is proposed to realize the attack detection according to the unique identity of the node and the feature quantity of the node data.The cloned node attack detection algorithm proposed in this study can effectively detect the cloned node,the proposed node authentication algorithm,and solve the problem of high false alarm rate due to packet loss based on the continuous output state and periodicity of single-cycle T-function.