A generalized architecture of quantum secure direct communication for N disjointed users with authentication

TL;DR

This paper presents a generalized quantum secure direct communication architecture for multiple users, ensuring security against various attacks through authentication and error probability, with partial or full quantum server cooperation.

Contribution

It introduces a novel generalized architecture for quantum secure direct communication among N users, enhancing security and flexibility over existing models.

Findings

Security is maintained against multiple attack types.

Authentication and communication are secure with error probability.

The architecture supports partial and full quantum server cooperation.

Abstract

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.