Research On Wireless Sensor Network Authentication And Key Agreement Scheme

Wireless Sensor Networks(WSNs)are the basis of the Internet of Things.The nodes in the network are deployed in the monitoring area to collect,transmit and process the physical parameters of the environment.Because the nodes own storage space and power supply is limited and environmental factors,making it does not have complex certification capabilities.In WSNs,authentication is the primary measure to ensure network security.Therefore,in order to ensure the transmission of data security,to achieve the authentication between nodes,key agreement has become an important research point.However,taking into account the wireless network and the traditional network structure is very different,so the traditional network authentication technology can not be directly applied to WSNs.This paper deeply studies the commonly used encryption algorithm,summarizes the classical wireless sensor network authentication scheme,and improves the scheme and improves the wireless network security.Specific work is as follows:Firstly,the paper introduces the network security of wireless sensor network,the commonly used encryption algorithm,and the classical authentication scheme.The importance of the authentication mechanism in ensuring data security is analyzed,and the existing scheme is improved.Based on the distributed network model,an authentication key agreement protocol based on shared key is proposed.The implementation process of the protocol is described in detail,and its security and computational efficiency are analyzed.Secondly,because the distributed network is not suitable for large-scale wireless sensor networks,clustered networks have better scalability.Therefore,combined with chaotic system and traditional cryptography similar characteristics,a certified key agreement scheme based on chebyshev chaotic map is proposed.The key negotiation process of the scheme is described in detail,and the security of the design scheme is described in detail.,efficiency were analyzed and discussed.Finally,in order to verify the availability,security and feasibility of the proposed scheme of clustering network,an experimental platform consisting of raspberry pi 3 nodes was designed to test the performance of the system.