Quantum key distribution method and device

A quantum key distribution and key technology, which is applied in the field of secure communication, can solve problems such as dependence on security, achieve the effects of ensuring accuracy, realizing portable management and configuration, and improving applicability and scalability
CN111404672AActive Publication Date: 2020-07-10CHINA MOBILE COMM LTD RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA MOBILE COMM LTD RES INST
Publication Date
2020-07-10

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Abstract

The invention provides a quantum key distribution method and device, and belongs to the technical field of safety communication. The quantum key distribution method is applied to sending end equipment, and comprises the following steps: preprocessing original session key information, and splitting the original session key information into n pieces of sub-session key information; sending the n pieces of sub-session key information through m paths which are not intersected; wherein n and m are integers greater than 1. The quantum key distribution method is applied to receiving end equipment, andcomprises the following steps: respectively receiving n pieces of sub-session key information through m paths which are not intersected; and obtaining original session key information according to the n pieces of sub-session key information. By means of the technical scheme, the problem that traditional quantum secret communication excessively depends on credible relay safety can be solved, and the fault tolerance and usability of a quantum network are effectively improved.
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Description

technical field

[0001] The invention relates to the technical field of secure communication, in particular to a quantum key distribution method and device. Background technique

[0002] Quantum secure communication has technical advantages such as quantum indivisibility, quantum inaccuracy, quantum non-replication, and ideal randomness. Its security is based on the basic principles of quantum mechanics. It is currently the only secure communication technology whose theoretical security can be strictly proved.

[0003] Such as figure 1 As shown, the existing practical quantum secure communication system mainly includes two main working steps, namely quantum key distribution based on quantum network and encrypted data transmission based on traditional network.

[0004] The quantum network and the corresponding quantum transceiver equipment are used between the communication parties to negotiate and distribute the quantum key, and the trusted quantum relay can be used to exten...

Claims

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