Blockchain-based data traceability and strong encryption method, device, medium and system

Abstract

The invention relates to the field of blockchain technology applications, and discloses a blockchain-based data traceability and strong encryption method and device, a medium and a system. The methodincludes the following steps: acquiring user registration information, generating a user authorization code and a query key according to the registration information, and returning the data back to users; receiving data upload requests of the users, and then receiving encrypted data I uploaded by the users who pass the verification; performing data sharing on the encrypted data I, recording and encrypting operation information and attribute information of all users on the encrypted data I to form encrypted data II, adding the encrypted data II to a block, calculating the encrypted data II by using different consensus algorithms according to application scenario requirements, and then writing the calculated encrypted data II to a blockchain; and receiving a user query request, performing identity authentication according to the query key, and providing blockchain query and download permissions for the users who pass the authentication to achieve data traceability. According to the scheme of the invention, the users can benefit from added values brought by shared data, and can also enjoy complete data privacy and data security.

Description

technical field [0001] The present invention relates to the application field of block chain technology, in particular to a block chain-based data traceability and strong encryption method, device, medium and system. Background technique [0002] Blockchain technology is a disruptive technology. At present, both the underlying technology and the upper-level application are the most cutting-edge scientific research directions. Taking financial data as an example, the current pain point is that many financial companies have their own data, but no one is willing to share it, although everyone knows that based on a shared big data pool, value that cannot be generated by a single data island can be obtained. Now there is no method or system that can guarantee data traceability and absolute data security, so that only authorized computers can open the data. Even if the hard disk is taken away, the data will be encrypted and garbled when opened in any other unauthorized environment...

AI Technical Summary

Problems solved by technology

Taking financial data as an example, the current pain point is that many financial companies have their own data, but no one is willing to share it, although everyone knows that based on a shared big data pool, value that cannot be generated by a single data island can be obtained

Now there is no method or system that can guarantee data traceability and absolute data security, so that only authorized computers can open the data. Even if the hard disk is taken away, the data will be encrypted and garbled when opened in any other unauthorized environment. At the same time, any party that shares data can only see and trace back when and where its own data was authorized to be opened by whom, but cannot see any other people's shared data information, and can only see a chain shared by all participants. Guaranteed tamper-proof and traceable records

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