Random routing method in quantum secret communication network

Abstract

The invention discloses a random routing method in a quantum secret communication network and mainly aims to solve the problem of low safety of a secret key caused by a unique negotiation path and high predictability of the path of a communication secret key in the prior art. The technical scheme of the random routing method are that by improving a distance vector-based routing algorithm expansion routing list, multiple next-hops are added to a quantum router arriving at a certain target address, and thus, multiple shortest paths from a source quantum router to a target quantum router are obtained; and by considering the secret key quantity on a link, on the condition that multiple next-hop routing nodes with enough secret key quantity exists, a next-hop is randomly selected from the next-hop routing nodes and the communication secret key is transmitted hop by hop until the communication secret key is transmitted to the target quantum router, thereby achieving random performing of secret key negotiation on multiple paths. According to the invention, secret key consumption is reduced, safety of the secret key during the secret key negotiation process is improved; and the random routing method can be used for the quantum secret communication network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a random routing method, which can be used in a quantum secret communication network. Background technique [0002] At present, the basic principles of quantum mechanics, such as the Heisenberg uncertainty principle, quantum state superposition principle, single photon uncertainty principle and quantum state non-cloning theorem, which are applied in quantum secure communication networks, guarantee the physical principle of quantum communication. Unconditional security. Therefore, quantum communication has received extensive attention and has achieved rapid development. It has moved from theory to experiment and is gradually commercialized. There are many branches of quantum communication, and the first to be commercialized is the quantum key distribution technology. The two parties in the communication can negotiate an absolutely secure key through quantum key d...

AI Technical Summary

Problems solved by technology

However, the final path obtained by this method is unique. Since the intermediate nodes on the path are predictable when the topology of the network and the amount of link keys are known, in the case of eavesdropping in the network, the eavesdropper is very likely to It is easy to predict the eavesdropping of intermediate nodes, which affects the security of the key

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