Communication method and related equipment based on quantum key

By adopting one-crypto encryption method at a time in quantum key distribution and communication, and including the identification information of the key block and the information of the target encryption method in the communication message, the problem of insufficient security in the encryption processing in the prior art is solved, and communication with high security level is achieved.

CN119341746BActive Publication Date: 2025-03-28CHINA TELECOM CORP LTD +1
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Patent Information

Application Number
CN202411908011.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

The prior art is difficult to realize high security level encryption processing in quantum key distribution and communication, especially when the key quantity is insufficient or the communication scenario is complex.

Method used

By determining whether a one-secret method is supported between the first device and the second device, if supported, the encryption process is performed using a one-secret method, and the identification information of the key block and the information of the target encryption method are included in the communication message, so that both parties can perform accurate encryption and decryption processing.

Benefits of technology

It realizes high-security encryption processing in a way that supports one-secret at a time, which is suitable for voice communication, video communication and other scenarios, improving the security of communication.

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Abstract

The present disclosure provides a communication method and related equipment based on quantum key, which relates to the field of network technology and security. The method includes: a first device determines whether its key quantity supports the one-time one-pad method. If it supports, the one-time one-pad method is used as the target encryption method, and then based on the target encryption method, the communication information is encrypted using the quantum key of the first device to obtain a communication message, which includes the identification information of the key block and the information of the target encryption method. The identification information of the key block is used to locate the starting position of the quantum key used for encryption processing; the first device sends a communication message to the second device, and receives the message decryption result returned by the second device after decrypting the communication message according to the identification information. The method performs encryption processing based on the one-time one-pad method when the key quantity of the first device is sufficient, which is suitable for communication scenarios with high security levels and effectively improves the security of communication.
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