A data storage method, node and blockchain system of a blockchain system

Abstract

The present invention provides a data storage method of a block chain system, a node and a block chain system. The data storage method includes: for any first node in the block chain system, respectively obtain the first node and the block chain system Shared keys between other second nodes in the network; obtain the transaction information of the transaction initiated by the first node; process the transaction information through each shared key and a preset hash algorithm with a key to obtain the hash label; broadcast transaction information and hash tags to each second node; determine the honest node from the nodes included in the blockchain system according to the verification message broadcast by each second node, if the honest node determines that the transaction is a real transaction, the honest node The transaction information is stored in a block newly generated for the main chain, wherein the verification message includes the result of verifying the authenticity of the transaction by the second node. This scheme can make the blockchain system resistant to quantum attacks while avoiding the decrease in the throughput of the blockchain system.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to a data storage method of a block chain system, a node and a block chain system. Background technique [0002] As a new type of Internet database technology, blockchain has the characteristics of decentralization, openness and transparency, and has a wide range of application values ​​in financial services, supply chain management, cultural entertainment, intelligent manufacturing, social welfare, education and employment. Based on the consensus mechanism and cryptographic technology, transactions on the blockchain network cannot be tampered with or denied. Among them, the consensus mechanism is used to ensure that the transaction information / block information is agreed in the entire blockchain network, and the cryptographic technology is used to To ensure the security, reliability and privacy protection of transaction information / block information. [0003] Howev...

AI Technical Summary

Problems solved by technology

[0005] For the current method of realizing the anti-quantum attack of the blockchain system, the length of the public key and signature of the post-quantum signature algorithm is much larger than that of the traditional digital signature algorithm. Implementing these signatures in the blockchain system will make the transaction The data volume of the data increases significantly, which in turn leads to a decrease in the throughput of the blockchain system

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