Blockchain-based Data Protection Technologies And Applications For Industrial Internet Of Things

The widespread application of 5G communications and smart devices has facilitated the rapid development of Industrial Internet of Things(IIo T)technologies,which offer great prospects for improving the mode of operation of industrial systems.Traditional IIo T architectures suffer from multiple challenges such as centralized management of data and information,cyber-attacks,privacy leakage and data integrity.In this context,deploying blockchain architecture in IIo T to provide distributed secure storage of data,authentication and access control becomes one of the feasible solutions.However,with the continuous expansion of IIo T application scenarios and the growth of data scale,the contradiction between the resource consumption faced by blockchain and the limited resources of Io T devices is becoming more and more prominent,which leads to the problems of inefficient authentication,weak access control of private data,limited security of data sharing,and adaptive defence against various cyber-attacks,which affects the performance of the IIo T system and the data security.For this reason,this paper,based on the summary of related research work,thoroughly researches the key problems faced by industrial Internet data security protection,such as secure data storage,access control,secure communication of network nodes,and abnormal network traffic detection of IIo T,while focusing on the optimisation of the efficiency of the blockchain system.Specifically,the contributions of this paper can be summarized as follows:(1)This paper proposes a blockchain-based secure storage scheme for IIo T data.Considering the high dynamism and openness of the IIo T,the scheme uses bilinear mapping for system initialization and combines entity registration and authentication techniques to achieve fast and secure authentication of entities in the Io T data storage system.Furthermore,the scheme ensures data security and integrity through encrypted data off-chain storage and data integrity verification mechanisms,effectively reducing the resource consumption of the blockchain.Security analysis and simulation results show that the storage scheme is secure and feasible with low system overhead.(2)This paper proposes an IIo T access control scheme based on smart contracts.The scheme uses an attribute-based access control model to set access permissions for different industrial components and employs smart contracts to define and manage system processes and policies.Additionally,by deploying Bloom filter components,the scheme improves the efficiency of contract management,ensuring the system’s efficient operation.Contract execution experiments,throughput experiments,and consensus mechanism experiments demonstrate that the proposed solution can effectively operate under conditions of large-scale concurrency.(3)This paper presents a secure communication scheme for IIo T nodes based on blockchain and onion routing.Addressing the problem of data interception during the data-sharing process in IIo T,the scheme integrates blockchain and smart contracts to protect the onion routing communication layer and onion nodes from being compromised,ensuring that system security data is not fully decrypted even if a single routing node is attacked.Experiments on token upload and download,smart contract throughput,and network anonymity tests prove the security and effectiveness of the scheme.(4)This paper proposes an IIo T network anomaly traffic detection method that integrates cosine similarity and a multi-loss encoder.First,the method quickly separates normal and abnormal network traffic by analyzing the differences in cosine similarity between normal and abnormal network traffic data.Then,it uses a multi-loss encoder to further detect the filtered normal traffic data,ensuring the accuracy of detecting abnormal network traffic in the system.Experimental results show that,compared to traditional autoencoders and improved autoencoder models,the proposed scheme has higher detection accuracy and can better address various abnormal data stream attack detection problems in IIo T.(5)Building on the above-mentioned analysis,this paper designs a blockchain-based Gantt chart system,Fabric-GC,which fully protects the security and privacy of project data management and provides visual access control functions for industrial project participants.In this system,deploying smart contracts offers real-time feedback and adjustment of project progress with security,ensuring effective cross-organizational collaboration in the project management process.Moreover,the paper designs multiple sets of experiments to test the performance of Fabric-GC,and the results prove the usability and effectiveness of the designed system.