A quantum key distribution system and method

Abstract

The invention discloses a quantum key distribution system, which comprises a distribution terminal, a master station service system, a quantum key mobile storage device and a quantum key distributionnetwork. The master station service system applies a quantum key to the quantum key distribution network in response to a quantum key application request of the distribution terminal. The quantum keydistribution network transmits a pair of quantum keys to the first quantum key downloading interface and the second quantum key downloading interface according to the application of the master stationservice system. The master station service system obtains the applied quantum key from the first quantum key downloading interface; The distribution terminal obtains a quantum key corresponding to the quantum key applied by the master station service system from the second quantum key downloading interface through the quantum key mobile storage device. The system can realize the low cost, large-scale and flexible distribution of quantum keys in distribution terminals through mobile storage devices. A quantum key distribution method is also disclosed.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a quantum key distribution system and method. Background technique [0002] Both parties in point-to-point communication use quantum keys to encrypt and protect data, which can effectively improve the security of data transmission. The quantum key is a symmetric key, and there are certain difficulties in its specific application process. On the one hand, the quantum key is distributed at both ends of the communication, and a quantum key generation device needs to be deployed at both sides of the communication. The quantum key generation device It is large in size and high in cost, and it is difficult to cooperate with small-size and low-cost terminals; on the other hand, the quantum key generation devices at both ends of the communication need (and must) be directly connected through optical fibers to transmit the bearer key Light quanta of information. [...

AI Technical Summary

Problems solved by technology

However, power distribution terminals have the characteristics of large number, wide distribution, and complex deployment environment. Although quantum keys can provide a more secure protection method for power distribution business information transmission, each power distribution terminal is equipped with a Quantum key generation equipment and laying optical fibers are unrealistic in terms of cost and volume requirements

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