End-to-end key generation method based on queue polling in quantum metropolitan area network

Abstract

The invention belongs to the technical field of quantum communication, and discloses an end-to-end key generation method based on queue polling in a quantum metropolitan area network, and the source end of the end-to-end key generation method based on queue polling in the quantum metropolitan area network randomly generates an initial key and encrypts the initial key by using a unique private key. The encrypted initial key is subjected to cache queue polling processing in the relay node and is subjected to hop-by-hop encryption and decryption by using a quantum key, after the destination end receives the encrypted call key, the initial key is obtained by decryption by using a private key, and an end-to-end key is generated through double confirmation of the source end and the destination end. The invention relates to an end-to-end key generation method based on queue polling in a quantum metropolitan area network. The method can be used for generating the end-to-end key in the quantum metropolitan area network and carrying out encrypted transmission on the service, so that the secure communication from the source end to the destination end is realized. The method and the device are used for solving the problem of communication delay jitter increase caused by unstable key generation during communication in a quantum metropolitan area network and the problem of unsafe communication caused by the risk of a trusted relay.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, and in particular relates to an end-to-end key generation method based on queue polling in a quantum metropolitan area network. Background technique [0002] Quantum key distribution QKD (Quantum Key Distribution) uses quantum states to encode and transmit information quantumly, which can provide theoretically unconditionally secure shared keys for both communication parties. Its security depends on the basic principles of quantum mechanics, and anyone who steals the key will be found. In recent years, the point-to-point quantum key distribution technology has become increasingly mature, and the quantum key distribution network has become the focus of research. [0003] Among the existing quantum metropolitan area network networking methods, the QKD network based on trusted relays is considered to be a practical network networking method under current technical conditions. This me...

AI Technical Summary

Problems solved by technology

At the same time, there is no data packet processing method for trusted relay in the QKD network to ensure the orderly transmission of quantum services and classical services

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