Big data privacy protection method based on block chain technology

Abstract

The invention discloses a block chain technology-based big data privacy protection method, which comprises the following steps of 1, collecting system data, analyzing and identifying privacy data in the data, and identifying attribute identifiers in the data to segment the data; 2, verifying whether the user has a data access right, processing a user request by using a processing node to manage user privacy data, and registering respective nodes for the user, a server and a side chain; 3, verifying the identity of the user, and managing data access and data transmission paths; and 4, encrypting the data subjected to data transmission, converting private data into normal data, and training a data recombination model. The block chain technology-based big data privacy protection system comprises a data management module, an authority management module and a storage management module, and has the characteristics of improving the privacy data security and improving the data control effect.

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