Research And Application Of Secure Routing And Key Pre-allocation Technology In Wireless Sensor Networks

The wireless sensor network is a multi-hop self-organizing network formed by wireless communication means of a large number of micro-low-power sensor nodes with sensing,computing,data processing and wireless communication capabilities deployed in the monitoring area.Wireless sensor networks are typically deployed in unattended environments and are vulnerable to a variety of attacks,including node capture,physical tampering,and denial of service.Once a node is compromised,the attacker can reprogram it and copy the node in bulk to take over the network.Therefore,security has become one of the main problems in wireless sensor network research.Wireless sensor network security is a current research hotspot.In response to the security challenges of wireless sensor networks,researchers around the world have proposed a number of solutions,including various key distribution schemes for wireless sensor networks such as dynamic key management mechanisms and key pre-allocation schemes,and various routing protocols with transport security.This paper analyzes the advantages and disadvantages of the existing secure routing scheme.Based on the LEAP protocol,a new single-path secure routing algorithm is proposed to improve the security of data transmission between the sender and the receiver in the wireless network environment.The simulation results show that the scheme has lower energy consumption and is more resistant to route interruption attacks.In addition,this paper researches the key pre-allocation scheme of R.Blom,and proposes a new key pre-allocation scheme for the building multi-space key pre-allocation scheme,which constructs multiple keys for each sensor node.The common key space between nodes forms a pair of keys between all node pairs.The simulation results show that the scheme reduces the initial payoff of smaller scale network attackers.Therefore,it improves the security of wireless sensor networks.