{
  "abstract": "The security of a secret sharing protocol is compromised if one or more dishonest participants can reconstruct the secret by deviating from the prescribed protocol, particularly when such malicious behavior remains undetected. Semi-Quantum Secret Sharing (SQSS) is a variant of secret sharing in which the participants possess only classical capabilities, such as preparing and measuring qubits in the computational ($Z$) basis, while a quantum-capable third party assists the dealer in generating and distributing quantum shares of a classical secret. The limited quantum capabilities of the participants in SQSS protocols may introduce vulnerabilities to collusion attacks, enabling an assisting quantum third party, in collaboration with a dishonest classical participant, to jointly recover the secret even without detection. In this work, we propose a novel SQSS protocol that eliminates this vulnerability and achieves information-theoretic security against collusion attacks. We further prove that the proposed protocol is secure against a broad class of external and internal attacks. Finally, a comparative analysis demonstrates that our construction advances existing SQSS protocols by simultaneously optimizing qubit efficiency, involves a classical dealer, and resilience against DCNA attacks using basic Bell states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10176",
  "author_total": 2,
  "authors": [
    {
      "name": "Santanu Majhi"
    },
    {
      "name": "Nirupam Basak"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/93knbxvz0t1cb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10176",
  "fulltext_url": null,
  "id": "93knbxvz0t1cb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10176",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.CR"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7221006439",
  "pdf_url": "https://arxiv.org/pdf/2610.10176",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/93knbxvz0t1cb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.10176",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10176"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Collusion-Secure Semi-Quantum Secret Sharing Scheme using a Quantum Third Party",
  "title_text": "Collusion-Secure Semi-Quantum Secret Sharing Scheme using a Quantum Third Party",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/93knbxvz0t1cb",
  "venue": "arXiv",
  "versions": []
}