Research On Industrial Internet Gateway And Data Integrity Based On Blockchain

As the leader of the digital “new infrastructure”,the industrial internet is a key point for industry to realize digitalization,networking and intelligence.With the development of the Industrial Internet,the "closed" industrial environment and the "open" network environment continue to merge,exposed many security issues.Among them,the data security issue of the industrial Internet is the most prominent.The industrial network environment has become more complex,and the existing data security solutions can no longer fully meet the requirements of future industrial data security protection.Given the advantages of blockchain technology,such as antitampering,traceability and decentralization,which is suitable for data security protection.This article considers using blockchain technology to empower industrial Internet data security protection and solve the pain points in the field of industrial Internet data security.Aming at the problems in the process of data collection,transmission and storage in the industrial internet,this article has carried out corresponding research,and the details are as follows.1.Aiming at the difficulty of traceability in the process of industrial Internet data collection,this paper proposes to use the digital signature of blockchain private key to identify the collected data.This way can facilitate the traceability of the data and guarantee the consistency of the collected data.2.Studying the shortcomings of traditional industrial data transmission schemes,in order to solve the problem of centralized decision-making and single point failure in the centralized data access control mechanism,this paper designs a role-based access control strategy implemented through the blockchain.The proposed method can ensure that every legitimate access request gets the consensus of most nodes in the network.Moreover,it also can dynamically update roles and then update permissions according to changes in policies.3.Studying the implementation of digital signature mechanism and access control mechanism.Aiming at the problem that the traditional implementation of these two mechanisms is far away from the data source,this article integrates the data signature mechanism and access control mechanism on gateway.By compiling the blockchain light wallet on the gateway,the gateway is used as a proxy of the blockchain nodes.At the same time,the Quorum blockchain public/private transaction isolation mechanism is used to achieve data privacy protection.Through experimental analysis,it is concluded that the throughput of the blockchain-based security gateway can reach hundreds of TPS,which meets industrial scenarios with low real-time requirements.4.Aiming at the problem of over-reliance on third parties in traditional data integrity verification methods in the process of industrial data storage,this paper proposes a data integrity verification scheme based on blockchain and blinded homomorphic tags.The over-reliance of centralized third party can be effectively avoided and the problem of double-counting tags after changing verifiers can be solved through blinding homomorphic tags.Compared with the traditional S-PDP scheme,in the case of a single verification,the computational efficiency of verification tag generation in the proposed scheme is increased by 13%.In the case of multiple changes of verifiers,the time complexity of verifying tag generation is reduced from O(n)to O(1),which is suitable for multiple verifications of industrial data by different audit institutions.