Method, node and storage medium for realizing privacy protection in blockchain

Abstract

One or more embodiments of this specification provide a method, node, and storage medium for implementing privacy protection in a blockchain. The method may include: the first blockchain node receives a transaction initiated by a client, and the transaction has one or A plurality of corresponding smart contracts; the first block chain node executes the transaction to obtain receipt data, and the receipt data includes receipt sub-data respectively corresponding to each smart contract; the first block chain node determines the transaction When the corresponding first smart contract has an authority protection flag, set corresponding access conditions for the receipt sub-data corresponding to the first smart contract when storing the receipt data; the first block chain node responds to the first smart contract When the access request of the corresponding receipt sub-data is made, it is determined that the access condition is satisfied.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of blockchain, and in particular to a method, node and storage medium for realizing privacy protection in blockchain. Background technique [0002] Blockchain technology is built on top of transmission networks such as peer-to-peer networks. Network nodes in the transmission network use chained data structures to verify and store data, and use distributed node consensus algorithms to generate and update data. Nodes in these blockchain networks sometimes need to be increased. [0003] At present, the two biggest challenges in the technology of enterprise-level blockchain platforms are privacy and performance, and it is often difficult to solve these two challenges at the same time. Most solutions trade for privacy by losing performance, or pursue performance with little regard for privacy. Common encryption technologies to solve privacy problems, such as Homomorphic encryptio...

AI Technical Summary

Problems solved by technology

[0003] At present, the two biggest challenges in the technology of enterprise-level blockchain platforms are privacy and performance, and it is often difficult to solve these two challenges at the same time

Most solutions trade for privacy by losing performance, or pursue performance without much consideration for privacy

Common encryption technologies to solve privacy problems, such as Homomorphic encryption and zero-knowledge proof, have high complexity, poor versatility, and may cause serious performance loss

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