Information Security Of Data Dissemination And Collection In Wireless Sensor Networks

Life of human beings has been greatly improved by Wireless Sensor Networks(WSNs).Using WSNs,people are able to obtain information without leaving home.Because of their wide range of application,more and more application has been paid to WSNs.In the daily maintenance,data dissemination aims to send commands to WSNs through communication channel.Data collection aims to aggregate information from sensors to WSNs administrator for analysis and feedback.Facing ever-changing requirements,WSNs administrator need to do information interaction incessantly.Apparently,data dissemination and collection are key operations to maintain WSNs.But most existing data dissemination protocols and data collection schemes only focus on efficiency and reliability,but ignore their own security problem.This paper summarizes existing work,provides solutions to meet safety requirements of WSNs and keep high efficiency as well.Main contributions of this paper are as follows:1)Secure message dissemination protocol based on short-length public key cryptographyTo meet information security requirements of WSNs and improve authentication efficiency,we adopts short-length public key cryptography and adopts specific puzzle technology to resist denial of service attack. Compared to protocols using public key of common length,our protocol consumes less energy and verification time.2)Secure data reprogramming protocol based on fountain codeTo perform data recovery and prevent Dos attack,our protocol adopts Fountain code and then uses Bloom filter to resist illegal data packets. Compared to common protocol,this protocol has high verification efficiency and is able to do message recovery after packet loss.3)Secure data aggregation scheme based on bilinear pairing To collect diversity information from sensors efficiently,this paper adopted a method which is based on bilinear pairing.This method adopts aggregation signature to sign data.Compared to method with traditional signature algorithm,this method has lower computation cost.