Research On Data Sharing Mechanism Of Industrial Internet Of Things Based On Blockchain

Industrial Internet of Things(IIoT)collects industrial big data through various sensors,and uses big data intelligent analysis technology to optimize production processes.However,due to the high potential value and strong security requirements,industrial big data has always had island problems,making it difficult to achieve cross-domain security sharing.As one of the emerging technologies,Blockchain has the characteristics of traceability and tamper resistance,which provides a good prospect for the safe and efficient sharing of industrial big data.However,existing research on blockchain data sharing only focuses on the security of the data exchange process between the parties of data sharing,and rarely considers the efficiency of data sharing.Therefore,how to improve the efficiency of data sharing under the premise of using blockchain technology to ensure the safety of data sharing has become a huge challenge.In this article,we comprehensively considered the security and efficiency of data sharing,and proposed a new data sharing scheme based on blockchain.In this scheme,we propose a data sharing architecture based on Identity Authentication and Hyperledger Fabric.The architecture is composed of a data layer,a domain layer and a blockchain layer.The data layer is responsible for collecting various types of sensory data.The blockchain layer can ensure the security and traceability of the data.As a part of the scheme,the shared domain division algorithm used by the domain division layer is responsible for dividing the data uploaded by different clients to the blockchain into different data sharing domains based on the similarity of the data tag attributes.Evaluation and iterative optimization of Sum of Square Error(SSE)and Sharing Degree(SD).By adding the shared domain identification attribute to the shared domain public data uploaded by the client,when the data demander performs shared data retrieval,the shared domain identification attribute can be used as an additional query condition to perform shared data retrieval,thereby improving data sharing efficiency.Experimental results show that the data sharing scheme proposed in this paper can effectively achieve the safe and efficient sharing of data between different clients.