Quantum key distribution method, device and system

Abstract

The invention discloses a quantum key distribution method, device and system. The method comprises the following steps: sending an instruction to each first quantum key management service terminal incommunication connection, controlling each first quantum key management service terminal to send the quantum key to a corresponding second quantum key management service terminal in communication connection; adopting the same ID storage for the same quantum key in each first quantum key management service terminal and each second quantum key management service terminal; enabling each first quantum secret key management service terminal or each second quantum secret key management service terminal to obtain quantum secret keys with the same ID to encrypt and decrypt the service data in the communication process; and sending a destroying instruction to each first quantum key management service terminal in communication connection, so that each first quantum key management service terminal in communication connection destroys the distributed quantum key. According to the invention, the quantum key is provided for different safe large-area services based on one quantum key distribution network, and the network construction and operation and maintenance costs are greatly reduced.

Description

technical field [0001] The invention belongs to the field of quantum information technology and the field of power system information security, and in particular relates to a quantum key distribution method, device and system. Background technique [0002] In order to ensure the safe and stable operation of the power system, the State Grid Corporation of China has built a security protection system based on "safe partition, dedicated network, horizontal isolation, and vertical authentication". Among them, the production control business is located in Zone I / II (high security level area), and the management information business is located in III / IV Zone (low security level zone). Different security zones are separated horizontally to ensure high security The business in the high-level area is not affected by the business in the low-security level area, and the attacks from the low-security level area are isolated. [0003] At present, different security regions independently...

AI Technical Summary

Problems solved by technology

Due to the large geographical overlap of businesses in different security regions, the cost of independently building quantum key distribution networks in different regions is high, and the workload of operation and maintenance is heavy

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