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Quantum key distribution method and system based on annular QKD network

A quantum key distribution and network technology, applied in the field of quantum key distribution methods and systems, can solve the problems that trusted relay technology cannot be guaranteed, and the security of quantum networks cannot be effectively guaranteed, so as to break the distance limit and improve security. sexual effect

Active Publication Date: 2020-02-28
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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  • Application Information

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Problems solved by technology

[0007] Trusted relay technology cannot guarantee the security of each trusted relay node, so the security of the entire quantum network cannot be effectively guaranteed
In the r

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  • Quantum key distribution method and system based on annular QKD network
  • Quantum key distribution method and system based on annular QKD network
  • Quantum key distribution method and system based on annular QKD network

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0026] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a quantum key distribution method and system based on a ring QKD network, and the method comprises the steps: enabling an untrusted node to serve as an MDI-QKD detector to generate a key in the ring network when there is the untrusted relay node which appears discontinuously in a transmission path, and carrying out the transmission of a shared key through an XOR relay method. According to the invention, quantum key distribution of the ring network between any two points in a trusted relay and non-trusted relay coexistence scene can be realized, compared with a trustedrelay technology, the security is improved, and compared with MDI-QKD, the distance limitation is broken.

Description

technical field [0001] The invention relates to the technical field of quantum communication, in particular to a quantum key distribution method and system based on a ring QKD network. Background technique [0002] As an important branch of quantum information science, quantum communication is a communication technology that uses qubits as information carriers for information interaction. Quantum communication has two most typical applications, one is Quantum Key Distribution (QKD), and the other is One is quantum teleportation. [0003] Different from classical cryptosystems, the security of quantum key distribution is based on the basic principles of quantum mechanics. Even if an eavesdropper controls the channel line, as long as the eavesdropper does not break into the side channel inside the legitimate user's device, quantum key distribution technology allows spatially separated users to share secure keys. The academic circles call this kind of security "unconditional ...

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0855H04L9/085
Inventor 陈熹杨力帆侯功华林昕怡林巍王远征邹保平黄莘程陈微钱思源李恺黄长贵叶跃骈冯笑黎金城林睫菲陈如尹
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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