A secret sharing scheme based on (t, n) threshold and adversary structure

Regular Contribution

Abstract

The existing secret sharing schemes cannot be applied directly if the threshold and the adversary structures are both needed to meet. A secret sharing scheme which can meet the requirements of both the (t, n) threshold and the adversary structure is proposed basing on the existing (t, n) threshold schemes and the knowledge of set theory, and the validity of the proposed scheme is proved perfectly. The scheme does not need to traverse the whole set of participants to get the qualified or unqualified subsets, and can distribute the shadows according to the requirements of threshold and adversary structure directly. The scheme can prevent the participants from cheating, and does not need the participants to provide their real shadows when the shared secret is reconstructed. The shadows do not need to be renewed when the shared secret is changed. The comparisons to the existing schemes show that, the proposed scheme is more efficient when the threshold and the adversary structure are both required.

Keywords

Secret sharing Information security Threshold Adversary structure Cryptography 

References

  1. 1.
    Shamir A.: How to share a secret. Commun. ACM 11, 612–613 (1979)CrossRefMathSciNetGoogle Scholar
  2. 2.
    Blakley, G.R.: Safeguarding cryptographic keys. In: Proceedings of AFIPS National Computer Conference, pp. 313–317. New York (1979)Google Scholar
  3. 3.
    Ito, M., Saito, A., Nishizeki, T.: Secret sharing schemes realizing general access structure. In: Proceedings of IEEE Global Telecommunication Conference, pp. 99–102. IEEE Press, New Jersey (1987)Google Scholar
  4. 4.
    Benaloh, J., Leichter, J.: Generalized secret sharing and monotone functions. In: Proceedings of Crypto’88, Lecture Notes in Computer Science, pp. 213–222. Springer-Verlag, Berlin (1989)Google Scholar
  5. 5.
    Chang, C.C., Lee H.C.: A new generalized group-oriented cryptoscheme without trusted centers. IEEE J. Select. Areas Commun. 5, 725–729 (1993)CrossRefGoogle Scholar
  6. 6.
    Hwang R.J., Chang C.C.: An on-line secret sharing scheme for multi-secrets. Comput. Commun. 13, 1170–1176 (1998)CrossRefGoogle Scholar
  7. 7.
    Tan K.J., Zhu H.W.: General secret sharing scheme. Comput. Commun. 8, 755–757 (1999)CrossRefGoogle Scholar
  8. 8.
    Wang S.J.: Direct construction of a secret in generalized group-oriented cryptography. Comput. Stand. Interf. 5, 455–460 (2004)CrossRefGoogle Scholar
  9. 9.
    Pang L.J., Jiang Z.T., Wang Y.M.: A multi-secret sharing scheme based on the general access structure. J. Comput. Res. Dev. 1, 33–38 (2006)CrossRefGoogle Scholar
  10. 10.
    Guo Y.B., Ma J.F.: Practical secret sharing scheme realizing generalized adversary structure. J. Comput. Sci. Technol. 4, 564–569 (2004)CrossRefMathSciNetGoogle Scholar
  11. 11.
    Sun, H.M., Shieh, S.P.: Secret sharing in graph-based prohibited structures. In: Proceedings of IEEE INFOCOM’97, pp. 718–724. IEEE Press, Japan (1997)Google Scholar
  12. 12.
    Sun H.M., Shieh S.P.: An efficient construction of perfect secret sharing for graph-based structures. J. Comput. Math. Appl. 7, 129–135 (1996)CrossRefMathSciNetGoogle Scholar

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.School of Automatization, NJUSTNanjingChina

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