Abstract
Access authentication scheme plays a foundational role in ensuring the security of communica-tion networks.However,an access authentication scheme with high security and efficiency is still lacking in quantum communication networks.In this paper,we propose a lattice-based access authentication scheme for quantum communication networks in the manner of real-time interaction with the network control center,which could achieve properties of mutual authentication,conditional anonymity,data confidentiality,unforge-ability,undeniability,and data integrity.We utilize the digital signature algorithm CRYSTALS-Dilithium and the key-establishment algorithm CRYSTALS-KYBER,both of which have been selected for standard-ization by the National Institute of Standards and Technology,to realize secure access authentication for users of the quantum communication networks.Specifically,in the quantum secure direct communication network,key-establishment is replaced by the verification of signatures encoded in quantum states.Our results demonstrate the feasibility of establishing a quantum-secure communication network.