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Data security sharing block chain system based on quantum key distribution

A quantum key distribution, data security technology, applied in key distribution, can solve problems such as inefficiency, achieve the effect of improving efficiency, improving integrity, and resisting quantum computing attacks

Active Publication Date: 2022-07-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although public key cryptography can save the link of distributing symmetric keys, its efficiency is far less than that of symmetric encryption algorithms

Method used

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  • Data security sharing block chain system based on quantum key distribution
  • Data security sharing block chain system based on quantum key distribution
  • Data security sharing block chain system based on quantum key distribution

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Embodiment Construction

[0043] The present invention is further described below with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0044] As an enterprise-level blockchain solution for alliances formed by large institutions or companies, consortium chain requires extremely high security to ensure the stable and efficient operation of the system. A sound cryptographic system can ensure the reliability and confidentiality of consortium chain data sharing, but with the development of quantum computing, the traditional blockchain cryptography mechanism will be impacted. The present invention intends to use the quantum key distribution technology to design a data security sharing quantum block chain system that is resistant to quantum computing attacks.

[0045] A data security sharing blockchain system based on quantum key distribution. After the nodes of the blockchain system are authenticated, a secure and reliable transmission channel i...

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Abstract

The invention discloses a data security sharing block chain system based on quantum key distribution, and the data security sharing process comprises the steps: building a secure and credible transmission channel through quantum key distribution after identity authentication between nodes; identity authentication, key negotiation and data encryption in alliance chain data sharing are realized by adopting a quantum key distribution technology. According to the invention, the security of data sharing and the efficiency of data encryption in the alliance chain are improved. The plaintext data is stored in the local of a data owner without relying on a third-party node or mechanism, so that the data can be effectively prevented from being stolen. The data sharing among the nodes is recorded on the block chain through the transaction, so that the integrity, confidentiality and traceability of the data sharing in the alliance chain can be improved.

Description

technical field [0001] The invention relates to the technical field of blockchain, in particular to a data security sharing blockchain system based on quantum key distribution. Background technique [0002] Blockchain is a decentralized distributed ledger technology that has the characteristics of traceability, immutability, anonymity, openness and transparency. Based on these characteristics, blockchain technology has been widely used in finance, supply chain, transportation, medical care, public welfare and other fields. Many properties of blockchain technology are based on cryptographic principles, however, with the rise of quantum computing, signature keys generated using the RSA digital signature algorithm, as well as algorithms such as Elliptic Curve Digital Signatures (ECDSA) and hash functions, will be affected by quantum algorithms. (Grover, Shor) threat. [0003] As a branch of blockchain technology, alliance chain technology serves large companies, institutions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/08H04L9/40
CPCH04L9/3263H04L9/3247H04L9/0852H04L9/0838H04L9/0819H04L63/0823Y04S40/20
Inventor 崔巍吴嘉豪
Owner SOUTH CHINA UNIV OF TECH