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: 2019-07-09
CHENGDU LINGGUANG QUANTUM TECH
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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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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 further described in detail below in conjunction with 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, which are characterized in that: except that the quantum key distribution process between adjacent nodes needs to occupy quantum channels, other communication processes use traditional network communication channels, Includes wired and wireless channels.

[0043] figure 1 It has been explained in the "Content 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 id...

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Abstract

The invention discloses a quantum key relay service method which mainly solves the problems of safety and efficiency of a quantum key trusted relay process in a quantum communication network. The method provided by the invention comprises the following steps of: the quantum network management server selects a relay node according to the relay routing table and the current state index of the relaynode; the relay node sends an XOR value of the shared quantum key between the relay node and the two adjacent nodes to the quantum key relay server; the quantum key relay server performs XOR operationon the received corresponding XOR value to obtain the XOR value of the quantum key of the source node and the target node, and the source node and the target node can realize the sharing of the quantum key by disclosing the XOR value. According to the invention, the safety is higher, the efficiency is higher, and the relay delay is smaller; the method can be widely applied to quantum communication networks of 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 unrealized quantum communication relay technology, the establishment of quantum channels between any nodes in the network and direct quantum key distribution (QKD) cannot be realized. In order to realize the quantum key sharing between any nodes in the network, it is necessary to use the key relay method to realize the key distribution between two nodes that cannot directly distribute the quantum key. [0003] In the public quantum key relay scheme, because the relayed key exists in the form of plain text in the relay quantum node, any node participating in the quantum key relay knows the relay key, so it is safe The premise of security is that all quantum nodes participating in the relay must be trustworthy. T...

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Application Information

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