Design Of Industrial Internet Of Things Privacy Preserving System Based On Hyperledger Fabric

Industry 4.0 promotes industrial intelligent transformation.In actual industrial scenarios,cloud computing and edge computing can improve the efficiency of data processing generated in the Industrial Internet of Things.However,privacy leakage are also damaging people's interests,in order to solve this problem,some scholars have conducted many research and obtained a certain amount of academic achievement using mathematical encryption methods based on cryptographic theory.However,a different scheme is proposed and can protect private data on the chain by means of data isolation based on the decentralization,tamper-proof and traceable technical characteristics of the blockchain.Therefore,it forms a supplement to the method based on cryptography theory,and provides a new idea for industrial data privacy protection.This paper combines the industrial IoT with blockchain technology,and develops a privacy protection system based on Hyperledger Fabric in order to achieve safe data transmission and platform management in response to the existing problems of data management and privacy leakage.Specifically,the main contributions of this article are as follows:(1)With regard to the problem of industrial data traceability management,this paper starts from the actual industrial manufacturing process and divides it into three parts:material supply,product production,and product sales.A three-chain architecture corresponding to industrial process is proposed.Finally,the interaction between the three chains is formed.Through the three-chain architecture,the traceability of industrial data can be realized and lays a foundation for privacy protection and security protection.(2)For the problem of data leakage that may occur during the storage and transaction process on the chain,this paper has considered single-chain and multi-chain scenarios separately,and proposes the data privacy protection scheme of multi-chain division method and side ledger plan on a single chain.Experiments are conducted to verify and analyze the scheme from the aspects of privacy protection realization effect and data processing complexity.The results show that the data isolation method can realize the protection of data privacy on the chain with lower complexity.(3)In response to the DDoS attack problem faced by the platform,a scheme for sharing attack source information on the chain is proposed based on the blockchain and combined with Iptables technology.In order to broadcast the attack source information to all nodes on the chain,we also develop the corresponding attack source information registration smart contract.The experimental uses the change of cloud server traffic as an indicator to verify the effectiveness of the scheme designed in this paper on attack traffic filtering.This paper consists of 6 chapters,including 25 figures,5 tables and 52 references.