Lightweight Mediated Semi-Quantum Secret Sharing Protocol

TL;DR

This paper introduces a lightweight semi-quantum secret sharing protocol that allows classical dealers to securely share secrets with classical agents via a dishonest third-party, avoiding Trojan Horse attacks and enhancing practicality.

Contribution

The proposed MSQSS protocol enables classical dealers to share secrets securely with classical agents using one-way quantum communication, eliminating Trojan Horse vulnerabilities.

Findings

Protocol resists collective attacks

It is more lightweight than existing SQSS protocols

The security analysis confirms robustness against attacks

Abstract

Due to the exiting semi-quantum secret sharing protocol have two challenges including (1) the dealer must be the quantum user, and (2) the classical users must equip with the Trojan Horse detectors, this study wants to propose a novel mediate semi-quantum secret sharing (MSQSS) protocol to let a classical dealer can share his/her secrets to the classical agents with the help of a dishonest third-party (TP). The proposed MSQSS protocol adopts the one-way quantum communication and thus it is free from the Trojan Horse attacks. Furthermore, the security analysis is given for proving that the proposed protocol can be against the collective attack. Comparing to the exiting SQSS protocols, the proposed MSQSS protocol is more lightweight and more practical.