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A quantum key synchronization system and method based on hierarchical tree cluster unit

A technology of quantum key and synchronization system, which is applied in the field of quantum key synchronization system based on hierarchical tree cluster units, can solve the problems such as application scenarios that cannot be applied to large-scale multi-party communication, poor scalability of topology structure, and long synchronization time. Achieve the effect of reducing the time-consuming, deployment cost, and complexity of key synchronization

Active Publication Date: 2022-07-01
ZHEJIANG QUANTUM TECH CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to provide a quantum key synchronization system and method based on hierarchical tree cluster units to solve the problem of poor scalability of the topology of the quantum key synchronization system in the prior art, and the complexity of central nodes decreases with the increase of the number of nodes. The disadvantages of exponential increase, synchronization time-consuming, low efficiency, cannot be applied to the application of multi-party communication with large-scale and complex network topologies, resulting in technical defects that greatly limit the practical application of quantum communication

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  • A quantum key synchronization system and method based on hierarchical tree cluster unit
  • A quantum key synchronization system and method based on hierarchical tree cluster unit

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[0056] The present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0057] like figure 1 As shown, a quantum key synchronization system based on hierarchical tree cluster units includes:

[0058] a top-level node 100, the top-level node 100 includes a top-level quantum key management server 400 and a QKD device 700;

[0059] a relay node 300, the relay node 300 includes a quantum key relay server 600 and a QKD device 700;

[0060] The last stage node 200, the last stage node 200 includes the last stage quantum key management server 500 and the QKD device 700;

[0061] The tree cluster unit 800, the tree cluster unit 800 is a key synchronization tree cluster topology unit composed of a top-level node 100, several relay nodes 300 (may not include relay nodes), and several last-level nodes 200. From the lowest level, they are defined as the top-level tree cluster unit, the second...

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Abstract

A quantum key synchronization system and method based on hierarchical tree cluster units, including a quantum key synchronization system based on hierarchical tree cluster units, consisting of several tree cluster units, and topological units are divided into top-level tree clusters according to network planning and logical levels Unit, two-level tree cluster unit, N-level tree cluster unit. Compared with the prior art, the present invention is based on a global tree cluster relationship table that records the affiliation of nodes, and two nodes can obtain the shared key from the top-level node with the closest affiliation, reducing the complexity, communication and computing pressure of each central node, Avoid the defects of high complexity of a single central node and excessive communication and calculation pressure in a large-scale network structure, which will affect the performance and stability of the system; The scenario of large-scale multi-party encrypted communication has lifted the restrictions on the practical application of quantum communication, and can also flexibly expand the network topology, reducing the deployment cost of quantum channels to a certain extent.

Description

technical field [0001] The invention relates to the technical field of optical transmission security communication, in particular to a quantum key synchronization system and method based on a hierarchical tree cluster unit. Background technique [0002] In recent years, quantum communication technology has achieved rapid development. During the practical process of quantum communication, the Quantum Key Distribution (QKD) technology applied to highly confidential communication has attracted great attention and achieved great success. With the development of quantum key distribution network as a secure communication network, it has become a new research direction. [0003] In the current quantum key distribution network, a quantum key can be generated between two QKD terminals connected to each other through a quantum key distribution link. The QKD terminal is usually deployed at the network node, and the quantum key is required when the network node transmits data. When enc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04B10/70
CPCH04L9/0855H04B10/70H04L9/0861
Inventor 丁胜建黄翔封连重陈斌石建军
Owner ZHEJIANG QUANTUM TECH CO LTD
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