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[Author] Mamoru SHIBATA(1hit)

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  • Advance Sharing of Quantum Shares for Quantum Secrets Open Access

    Mamoru SHIBATA  Ryutaroh MATSUMOTO  

     
    PAPER-Information Theory

      Pubricized:
    2023/11/24
      Vol:
    E107-A No:8
      Page(s):
    1247-1254

    Secret sharing is a cryptographic scheme to encode a secret to multiple shares being distributed to participants, so that only qualified sets of participants can restore the original secret from their shares. When we encode a secret by a secret sharing scheme and distribute shares, sometimes not all participants are accessible, and it is desirable to distribute shares to those participants before a secret information is determined. Secret sharing schemes for classical secrets have been known to be able to distribute some shares before a given secret. Lie et al. found a ((2, 3))-threshold secret sharing for quantum secrets can distribute some shares before a given secret. However, it is unknown whether distributing some shares before a given secret is possible with other access structures of secret sharing for quantum secrets. We propose a quantum secret sharing scheme for quantum secrets that can distribute some shares before a given secret with other access structures.