| Due to the continuous development of Internet technology,especially in the era of mobile Internet,data bursts and then enters the era of big data.In the context of big data,data owners use a large amount of data generated by individuals for personal services.Using this data creates a lot of profits,but the data is not really controlled by individuals,which brings about the problem of data sovereignty inequality and personal privacy of data owners and data owners,and because of the value brought by the data,The data owner has a multi-party game,forming the status quo of data segregation,that is,the three problems currently facing: data hegemony,privacy leakage and data islanding.Based on the personal trusted data space,the personal trusted data space based on Hyperledger Fabric is proposed.The data assetization engine is used to complete data value evaluation and data transaction,which solves the problem of data island and data hegemony and alleviates the problem of privacy leakage.After researching blockchain technology,data space technology,Hyperledger Fabric and HBase,this paper mainly completed the following work:1.The architecture of the personal trusted data space based on Hyperledger fabric is proposed.Based on the construction of personal trusted data spatial data dimension,business dimension and security dimension,the construction scheme of personal trusted data space based on Hyperledger Fabric is proposed.2.Based on the storage structure of the designed personal trusted data space,according to the privacy degree and security level of the data,the personal data value evaluation formula is proposed,and the design and implementation of the personal data value evaluation algorithm is completed.3.Using HBase and MySQL to realize the storage layer of personal trusted data space,using its RESTful interface and Hyperledger Fabric smart contract to design the personal data assetization engine,realize the personal data assetization,realize the data transaction function,and At the end of the paper,the system was tested and functionally tested.The system can run normally and perform well.Through the test,the personal trusted data space of Hyperledger Fabric proposed by this paper is returned to the data owner through the personal data assetization engine,which solves the problem of data hegemony;under the premise of ensuring the data source is credible,the data The processing and data storage process ensure the credibility of the data,and the corresponding intelligent contract is designed to realize the data flow.While solving the problem of data islands,the problem of privacy leakage is alleviated. |
