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Quantum key relay method

A quantum key and quantum technology, applied in the field of quantum key relay, can solve the problems of low efficiency, security bottleneck, inconvenient key encryption information security management, etc.

Active Publication Date: 2019-07-09
CHENGDU LINGGUANG QUANTUM TECH
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  • Description
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Problems solved by technology

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

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Embodiment Construction

[0063] 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.

[0064] 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.

[0065] figure 1 , figure 2 and image 3 It has been explained in the "Content of the Invention" section and will not be introduced here.

[0066] Figure 4 It is an embodiment of the method for confirming the key identification of the quantum key used between adjacent nodes of the present invention a...

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Abstract

The invention discloses a quantum key relay method which mainly solves the safety and efficiency problems of a quantum key trusted relay process in a quantum communication network. The method comprises the steps that quantum keys are cached in advance or negotiated in real time between adjacent quantum nodes, and the quantum nodes respond to a relay service request of a quantum network managementserver in real time; the quantum network management server selects a one-way concurrency relay method or a two-way concurrency relay method according to the relay routing table and the current state index of the related quantum node, and safely relays a key from the source node to the target node. According to the invention, the credibility requirement on the relay node can be reduced, the key relay efficiency is improved through concurrent response and a preferable relay mode, and the relay delay is reduced; the method and the system can be widely applied to quantum communication networks ofvarious topological structures, and have a good application prospect.

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 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. Therefore...

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0819H04L9/0855H04L9/08
Inventor 不公告发明人
Owner CHENGDU LINGGUANG QUANTUM TECH
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