Decentralized quantum Byzantine consensus method

A decentralized, Byzantine technology, applied in the field of decentralized quantum Byzantine consensus, it can solve problems such as the method cannot be expanded, the method can only achieve binary consensus, and the quantum consensus method does not really strictly solve the Byzantine general problem, etc., to achieve the guarantee The effect of unconditional security

Active Publication Date: 2022-05-27
NANJING UNIV
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Problems solved by technology

[0005] Purpose of the invention: The purpose of the invention is to provide a decentralized quantum Byzantine consensus method, which solves the problem that the existing quantum consensus method does not really strictly solve the Byzantine general problem, and the method cannot be extended to multiple parties; at the same time, it solves the problem that the method only The problem of being able to achieve binary consensus and only delivering binary messages

Method used

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  • Decentralized quantum Byzantine consensus method
  • Decentralized quantum Byzantine consensus method
  • Decentralized quantum Byzantine consensus method

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Embodiment 1

[0054] like Figure 4 As shown, in order to better describe the method, this embodiment specifically exemplifies the process of the five-party consensus method, wherein the malicious nodes are 2 persons. Assume that the initial master node of the initial message distribution round is S and is a good node; the remaining four nodes are ,in For good nodes, is a malicious node, in Figure 4 circled in the middle.

[0055] Specific steps are as follows:

[0056] (1) Message broadcast stage:

[0057] S1. Initial message distribution round: such as Figure 4 As shown in (a), the initial master node S is in the initial message distribution round Lieutenant General distributes messages to be agreed upon ;when When selected as the forwarder, the sender S and the forwarder use three-party quantum digital signature technology. The two parties will, in turn, serve as validators Complete three rounds of three-party quantum digital signatures, and act as the forwarder's ...

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Abstract

The invention discloses a decentralized quantum Byzantine consensus method which comprises a message broadcasting stage and a message integration stage, the message broadcasting stage is composed of a plurality of message distribution wheels, and in each message distribution wheel, a main node distributes messages to other auxiliary nodes in the wheel; other auxiliary nodes verify and record the received messages, and message distribution is realized by using a three-party quantum signature technology, so that anti-counterfeiting performance and anti-repudiation performance are ensured; in the message integration stage, each node independently utilizes a major function to carry out multi-round statistical integration on a message statistical list in the node, and a finally output message is determined. According to the method, all good nodes, namely non-malicious nodes, are ensured to output consistent consensus conclusions finally; and under the condition that one good node serves as the initial main node, it can be ensured that finally, messages output by all the good nodes consistently are just the values distributed by the good initial main node in the initial message distribution round.

Description

technical field [0001] The invention relates to the technical field of quantum consensus, in particular to a decentralized quantum Byzantine consensus method. Background technique [0002] A decentralized distributed system is a decentralized network architecture jointly maintained by multiple independent and equal servers. Based on its decentralized consensus mechanism, the distributed system provides a storage and computing platform with high security and high information processing capabilities for finance, public services and other fields. Among them, the blockchain distributed ledger represented by Bitcoin has become a global Hot spots and created huge economic benefits; and the decentralized consensus method as the core architecture of the distributed system directly determines a series of key performances of the system, including fault tolerance, scalability, etc. Therefore, about the decentralized consensus method research has attracted widespread attention. [000...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L9/32G06N10/00
CPCH04L9/3247G06N10/00H04L9/083Y02D30/50
Inventor 尹华磊高睿琪翁晨洵陈增兵
Owner NANJING UNIV
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