Manufacturing industry cross-domain heterogeneous data identity construction and tracing method based on block chain

Abstract

The invention provides a manufacturing industry cross-domain heterogeneous data identity construction and tracing method based on a block chain. The method comprises the steps that firstly, a data tracing proxy is preset in the multi-data processing stage of an intelligent manufacturing industry supply chain collaborative cross-domain system, and data interaction with the block chain system is achieved through the proxy; a data tracing proxy extracts data internal fingerprints which can be shared and are written into a database of each enterprise, a lightweight elliptic curve feature extraction algorithm is designed by combining external association attribute features of the data, internal and external cause joint features are further extracted and signed, and a data credible security label combining internal and external factors is constructed. Secondly, an intelligent contract is called, in the multi-data processing stage of the supply chain cooperative cross-domain system, a recordis generated and stored in a data mapping logic chain in a block chain, a multi-party consensus mechanism based on the block chain and a tamper-proof characteristic are combined with the automation capability of an intelligent contract in the block chain, and multi-scale and multi-data processing stage data identity chain tracing is realized.

Description

technical field [0001] The invention belongs to the field of multi-entity collaboration of information security manufacturing supply chain system, and specifically relates to a blockchain-based identity construction and traceability method for cross-domain heterogeneous data in the manufacturing industry. Background technique [0002] The gradual advancement of Industry 4.0 empowers the rapid development of intelligent manufacturing. Today, there are extensive and complex data flows and interactions among enterprises in the supply chain system in the field of intelligent manufacturing. Manufacturing enterprise data often requires high security guarantees, and the multi-business domain data integration and sharing of each enterprise in supply chain collaboration constitutes a contradiction with its security requirements. In the data processing chain from data collection to storage, analysis and utilization, how to ensure the reliable traceability of multi-form structural dat...

AI Technical Summary

Problems solved by technology

At present, there is no solution that combines blockchain technology with multi-entity collaboration under heterogeneous multi-source data management to ensure reliable data sources, authentic content, and easy traceability

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