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A Quantum Key Relay Service Method

A technology of quantum key and service method, applied in the field of quantum key relay service, can solve the problems of inconvenient key encryption information security management, relay mode delay, security bottleneck, etc., and achieves small relay delay and computational complexity. Small, safe effect

Active Publication Date: 2022-07-15
CHENGDU LINGGUANG QUANTUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are obvious security bottlenecks in the current public schemes, that is, all nodes participating in the trusted relay can directly obtain the relayed key, which is not convenient for the security management of the key and its encrypted information; in addition, using The "single-hop forwarding" relay method has a large delay and is inefficient

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  • A Quantum Key Relay Service Method
  • A Quantum Key Relay Service Method
  • A Quantum Key Relay Service Method

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Embodiment Construction

[0041] In order to make the technical solutions and advantages of the present invention clearer, as a part of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0042] The communication channels involved in the solution of the present invention include quantum channels and traditional communication network channels, and are characterized in that: except that the quantum key distribution process between adjacent nodes needs to occupy the quantum channel, other communication processes use traditional network communication channels, Includes wired and wireless channels.

[0043] figure 1 It has been explained in the "Summary of the Invention" section and will not be introduced here.

[0044] figure 2 It is an embodiment of the method for confirming the key identification of the quantum key used between adjacent nodes of the present invention and using the quantum key of ...

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Abstract

The invention discloses a quantum key relay service method, which mainly solves the security and efficiency problems of a quantum key trusted relay process in a quantum communication network; the steps of the method include: a quantum network management server according to the relay route The current state indicator of the table and the relay node selects the relay node, and the relay node sends the XOR value of the shared quantum key between it and the two adjacent nodes to the quantum key relay server concurrently, and the quantum key relay The server performs the XOR operation on the corresponding XOR value received, and obtains the XOR value of the quantum key of the source node and the target node. By disclosing the XOR value, the source node and the target node can realize the quantum key. The invention has higher security, higher efficiency and smaller relay delay; the method of the invention can be widely used in quantum communication networks with various topological structures, and has very important practical application value.

Description

technical field [0001] The invention relates to the technical field of communication relay in a quantum communication network, in particular to a quantum key relay service method. Background technique [0002] In the quantum communication network, due to the lack of groundless quantum communication relay technology, the construction of quantum channels and direct quantum key distribution (QKD) between any nodes in the network cannot be realized. In order to realize quantum key sharing between any nodes in the network, between two nodes that cannot directly distribute quantum keys, it is necessary to use key relay to realize key distribution. [0003] In the public quantum key relay scheme, because the key to be relayed exists in the form of plaintext in the relay quantum node, any node participating in the quantum key relay knows the relay key, so it is safe The premise of this is that all quantum nodes participating in the relay must be trusted. Therefore, this relay quan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
CPCH04L9/0855
Inventor 不公告发明人
Owner CHENGDU LINGGUANG QUANTUM TECH