A blockchain-based data sharing method

Abstract

The invention discloses a data sharing method based on a block chain. The method comprises, in sequence, the following steps of an S1 phase of establishing a data sharing model; an S2 phase of processing data; an S3 phase of carrying out data communication; an S4 phase of carrying out negotiation on whether to allow join-in of a new node; an S5 phase of judging whether a node sending a data sharing request is a regional autonomy alliance member or not; and an S6 phase of judging whether to allow a non-regional autonomy alliance member to share data or not. According to the data sharing method based on the block chain, when the member nodes in a regional autonomy alliance share the data, the member nodes carry out mutual constraint and mutual supervision; The information island phenomenon is solved; the management complexity is effectively mitigated through autonomy of the nodes; it is ensured that no single point failure exists in the block chain based on distributed multi-redundancy characteristics; even if a single point failure occurs, other nodes are not influenced; and compared with a centralized system, the method is more reliable.

Description

technical field [0001] The invention relates to the technical field of data openness and sharing, in particular to a blockchain-based data sharing method. Background technique [0002] With the increasing scale and value of data, it is becoming more and more important to mine the potential value of data through data sharing; but how to ensure that data owners let go of their suspicions, trust each other, effectively solve the problem of "information islands", and openly share At the same time, protecting sensitive information and confidential data from being illegally obtained and used is the basic consensus and requirement of open sharing. [0003] The current data sharing methods mainly include traditional data sharing schemes and centralized data sharing schemes; traditional data sharing schemes use traditional privacy protection methods to achieve internal sharing, and at the same time choose to refuse open sharing to reduce the risk of exposing private data; centralized...

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Problems solved by technology

[0004] Existing traditional sharing schemes reduce privacy risks by refusing to open to the outside world, not only cannot tap the potential value of data, cannot maximize its benefits, but also cause information construction to lag behind; although the centralized data sharing scheme solves the problem of mutual distrust, However, due to the security issues brought about by the concentration of data in a third party, the third party cannot guarantee absolute data security, and once a data leak occurs, it will cause serious consequences

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