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Enhanced (x, r)-threshold quantum secret sharing (QSS) with mutual authentication and cheat detection
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DOI：10.1007/s40509-025-00382-7.png)
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Abstract
En 中文
Quantum secret sharing (QSS) holds pivotal importance in quantum cryptography, with mutual identity authentication serving as a critical mechanism to fortify security by ensuring legitimate participant identification. In this paper, we propose a (x, r)-threshold (QSS) scheme that leverages d-dimensional Bell states and single-qudit unitary operations for secure information distribution. The protocol begins with Alice, the dealer, preparing a Bell state and splitting it into two particles. She retains one particle while transmitting the other to the participants. Subsequently, x-out-of-r participants engage in a sequential identity authentication process, applying unitary operations to validate their identities. The Bell states serve a dual purpose: they facilitate secret reconstruction while also enabling the detection of dishonest participants. Once eavesdropping and malicious activity are verified, the dealer applies a unitary transformation to the second Bell state particle and transmits it to the participants, enabling them to regenerate the secret. This approach enhances security by effectively detecting malicious participants, preventing unauthorized access, and offering improved flexibility, efficiency, and practicality compared to existing QSS methods.
Keywords:
Quantum secret sharing
Mutual authentication
Cheat detection
Journal
Q
IF:
1
Papers:
26
Citations:
222
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Cited Papers