Blockchain-based Distributed Trust Management In Tactical Edge Network

With the acceleration of the pace of military modernization around the world,the military is becoming more and more informatized,and informational warfare has become a major trend.In order to adapt to the rapidly changing informational battlefield situation,a tactical edge network composed of local command centers and various tactical terminals came into being.With its high mobility and strong awareness of battlefield situation,tactical edge networks are playing an increasingly important role in informational warfare.However,in the environment of confrontation between the enemy and us,the enemy will attack our tactical network in various ways.Especially,for the tactical edge network near the front of the battlefield,it is more likely to be attacked and tampered by the enemy.Therefore,it is necessary to control the nodes in the tactical edge network and to isolate the malicious nodes in time,so as to ensure the safe and reliable operation of the tactical edge network.This paper studies the traditional trust management and control mechanism.Aiming at the application scenarios of the tactical edge network,combined with the Eigen Trust reputation control algorithm in the classic P2 P network and the latest blockchain technology,a tactical trust management and control edge network based on blockchain is proposed.By designing the simulation experiments,the feasibility of the scheme is verified,and based on this scheme,the tactical edge network trusted interactive system is realized.The main contents of this paper are as follows:1)Propose a trust management and control scheme based on blockchain for tactical edge network nodes.The scheme mainly includes four modules: message evaluation,local reputation value calculation,global reputation value aggregation,and reputation block generation.Among them,the message evaluation module is mainly responsible for evaluating whether the received message is reliable;the local reputation value calculation is mainly responsible for counting the message evaluation results and generating local reputation views of distributed nodes.The process of global reputation value aggregation is a process in which the weak central node collects the local reputation value of distributed nodes in the network and iteratively calculates the global reputation value of the distributed node through the reputation value transmission;the reputation block generates the global reputation of the newly calculated distributed nodes The value is stored on the blockchain to ensure that the credibility data is trusted by multiple parties and cannot be tampered with.By designing simulation experiments under various malicious attack modes,the feasibility and effectiveness of the scheme are verified.2)Implement a decentralized tactical edge network trusted interaction system based on the proposed node trust management and control scheme.Adopt the Ethereum alliance chain architecture and smart contract technology to build a secure and efficient trusted battlefield information collection,storage,and distribution network to ensure the quality of information interaction between nodes.Smart contract defines interactive rules of users in advance and regulates users behavior.At the same time,it provides a visual DAPP interface to simplify the users operation process.Finally,the usability of the system was verified by related functional tests.