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Quantum Information Processing

A (t, n) threshold quantum secret sharing with authentication based on single photons

Jie Zhang, Jie Zhang, Su‐Juan Qin, Zhengping Jin

Published Feb 18, 2025• 13 citations
Publisher
DOI
10.1007/s11128-025-04672-2

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Quantum secret sharing (QSS) is an important branch of quantum cryptography. Identity authentication is a significant means to achieve information protection, which can effectively confirm the identity information of both communication parties. Due to the importance of information security, more and more communications require identity authentication. We propose a d-level (t,n) threshold QSS scheme in which both sides of the communication use mutually unbiased bases for mutual identity authentication. In the secret recovery phase, the sharing of secrets that only the participant holds will not be disclosed or transmitted. Therefore, external eavesdroppers will not get any information about secrets at this phase. This protocol is more secure, effective, and practical. Security analysis shows that this scheme can effectively resist intercept–resend attacks, entangle–measure attacks, collusion attacks, and forgery attacks.