A (w, t, n)-weighted threshold dynamic quantum secret sharing scheme with cheating identification

Fulin Li, Mei Luo, Huihui Zhu, Shixin Zhu and Binbin Pang

Physica A: Statistical Mechanics and its Applications, 2023, vol. 612, issue C

Abstract: Quantum secret sharing holds a significant place in quantum cryptography. In this paper, a (w, t, n)-weighted threshold dynamic quantum secret sharing scheme with cheating identification is constructed based on the CRT for a polynomial ring. In our scheme, on the premise of not altering the private shares of the old participants, the dynamic update of the participants can be realized without other participants’ help, and the shared secret will not be changed. During the secret reconstruction phase, via executing the quantum state digital signature, the proposed scheme not only can timely detect the existence of the cheating behavior, but also once exists, definitely can identify one cheater and eliminate him from the system, making the scheme more secure. Moreover, our scheme enables secret sharing among participants with different authorities, which enhances the practicability of the scheme. Finally, the security analysis shows our scheme not only is resistant to a range of typical external attacks but can detect forgery, collusion, denial and dishonest revoked participant attacks.

Keywords: Dynamic quantum secret sharing; Weighted threshold structure; Cheating identification; Quantum state digital signature (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:612:y:2023:i:c:s0378437123000493

DOI: 10.1016/j.physa.2023.128494

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