A quantum key distribution method integrating qkd network and classical cryptographic algorithm

Abstract

A quantum key distribution method combining a QKD network and a classical cryptographic algorithm, comprising the following steps: establishing a mesh topology between the QKD network and an access terminal; issuing a public-private key pair to each QKD node in the mesh topology; communicating QKD Nodes initiate virtual quantum key distribution link establishment requests; communication QKD nodes implement quantum key encryption and decryption communication processes. Compared with the prior art, the invention solves the fusion problem between the quantum key distribution network and the information system based on the classical cryptographic algorithm. By using a secure encrypted channel based on the key negotiation process of the asymmetric cryptographic algorithm, the dynamic key distribution from the quantum backbone network to the terminal device is realized, and the problem of offline charging inconvenience is solved. By using the signature algorithm of two-way authentication, the identity authentication problem between the domain server and the terminal equipment, and between the terminal equipment and the terminal equipment is solved. Replay attacks can be effectively prevented by introducing time parameters into the algorithm.

Description

technical field [0001] The invention relates to the technical field of quantum communication and cryptography, in particular to a quantum key distribution method integrating a QKD network and a classical cryptographic algorithm. Background technique [0002] Quantum Key Distribution (QKD) is based on the principles of uncertainty, indivisibility, and unclonability in quantum mechanics, and uses key distribution protocols such as BB84, B92, and EPR to ensure the security of key distribution in the network. In recent years, due to the high security features of QKD technology, quantum key distribution platforms based on QKD technology have been widely used in e-government, finance, energy and other fields with high security requirements. [0003] However, in practical applications, quantum key distribution equipment can only be deployed in the backbone communication network due to cost. Before the miniaturization and cost reduction of quantum key distribution equipment, the com...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a quantum key distribution method in which a QKD network and a classical cryptographic algorithm are integrated to solve the disadvantages of inconvenient offline charging of quantum keys from the backbone network to terminal equipment in the prior art, and the current offline charging of quantum keys The technical defects of the combination method with the classical cryptographic algorithm are complex and the integration degree of the existing PKI system is low, as follows:

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