Data sharing method based on blockchain and related to private data

Abstract

The invention relates to the technical field of information security and provides a data sharing method based on blockchain and related to private data. The method includes the steps that a private key S is allocated by the blockchain and held by four slave nodes A, B, C and D, when the private key S is generated, a piece of verification information is written into each part in the private key, and through comparison of the verification information, one certain node in the blockchain judges the identity of another node on the basis; the private data of each slave node uses the corresponding part of private key in an encrypted mode, and a network needs to be informed of which node can obtain what data during encryption; when one certain slave node intends to have access to the private data uploaded by other nodes, the network makes the verification information compared with verification information carried by part of the private key of an upload data node, and when the verification result is one of the nodes informed by the upload data node, the node applying at the moment can have access to the private data uploaded by another node. The method is capable of guaranteeing safety of exchange and obtaining of the private data in the blockchain.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a blockchain-based data sharing method involving private data. Background technique [0002] With the development of information technology, the Internet has become an inaccessible part of the development of all walks of life, especially in enterprise information exchange and data sharing. The sharing of information and data between enterprises includes electronic contracts, electronic transfers, and the exchange of other types of private data, and this type of information exchange has very high requirements on the security of data exchange and data use. In the exchange of data such as electronic contracts between enterprises, it is necessary to ensure that the data is synchronized and cannot be tampered with; in the sharing and use of data between enterprises, it is necessary to pay attention to issues such as data privacy and security to ensure that the data is not...

AI Technical Summary

Problems solved by technology

Therefore, although the addresses of the sender and recipient of each transfer record can be seen, it cannot be corresponding to a specific person in the real world

However, such protection is very weak. By observing and tracking the blockchain information, address ID, IP information, etc., the connection between accounts and transactions can still be traced

Images