A generalized architecture of quantum secure direct communication for N disjointed users with authentication
This addresses secure quantum communication for multiple users, but appears incremental as it generalizes an existing architecture.
The paper tackles secure direct communication among N users with quantum server cooperation, proving that attackers cannot gain information during authentication or communication, ensuring message security with an error probability irrespective of measurement sequence.
In this paper, we generalize a secured direct communication process between N users with partial and full cooperation of quantum server. The security analysis of authentication and communication processes against many types of attacks proved that the attacker cannot gain any information during intercepting either authentication or communication processes. Hence, the security of transmitted message among N users is ensured as the attacker introduces an error probability irrespective of the sequence of measurement.