Research On Source Location Privacy Protection In Wireless Sensor Networks

Wireless sensor networks(WSN)are used in a variety of application areas for unattended event monitoring from wildlife to military tracking.Many times,the object needs to be protected for security reasons.Source location privacy(SLP)is becoming an emerging topic in wireless sensor networks,because it cannot be fully addressed by traditional cryptographic mechanisms,such as encryption and authentication,owing to the open nature of a sensor network and lack of a protected physical boundary.The main research work and innovation are summarized as follows.(1)The thesis summarizes the main features of wireless sensor networks,security issues,prospects and future trends and so on.Then the model of the system and the adversary,the security threats which we face and the research status and progress are presented.This thesis describes the directional routing agreement and CEM routing agreement and other traditional source location privacy agreement.This thesis analyzes the shortcomings of the two agreements in the adversary's average traceback time,network energy consumption,the delay of the packet and so on.(2)We propose a scheme which is called a single virtual circle routing method based on fake package(SVCRM).Our thesis aims to maximize source location privacy,which is evaluated by the adversary's average traceback time,by designing routing protocols that distribute message flows to different routes and more hops.(3)In order to maximize the life of the WSN against the failure in the virtual ring,we then optimize this algorithm and put forward a enhanced SVCRM which is called a multiple virtual circle routing method based on fake package(MVCRM).Promising simulation results were found to proof that SVCRM are superior than other approaches and the safe time provided by SVCRM is much longer,while adding a comparatively low cost in terms of additional message latency and energy.Finally,we consider not only the hops between sink and source nodes but also the message rate as well for the first time,and we also investigate n1 hops together with the contribution from the message rate.When the source is near to the sink,we propose a practical privacy-aware routing based hops and frequency in this situation.Our protocols can be used for many practical applications.