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An efficient signcryption scheme with key privacy

Conference Paper


Abstract


  • In Information Processing Letters 2006, Tan pointed out that

    the anonymous signcryption scheme proposed by Yang, Wong and Deng

    (YWD) in ISC 2005 provides neither confidentality nor anonymity. However,

    no discussion has been made on whether YWD scheme can be

    made secure. In this paper, we propose a modification of YWD scheme

    which resolves the security issues of the original scheme without sacrificing

    its high efficiency and simple design. Indeed, we show that our

    scheme achieves confidentiality, existential unforgeability and anonymity

    with more precise reduction bounds. In addition, our scheme further improves

    the efficiency when compared with YWD, with reduced number

    of operations for both signcryption and de-signcryption.

UOW Authors


  •   Li, Chung Ki (external author)
  •   Yang, Guomin
  •   Wong, Duncan S. (external author)
  •   Deng, Xiaotie (external author)
  •   Chow, Sherman S. M.. (external author)

Publication Date


  • 2007

Citation


  • Li, C. Ki., Yang, G., Wong, D. S., Deng, X. & Chow, S. S M. (2007). An efficient signcryption scheme with key privacy. In J. Lopez, P. Samarati & J. L.. Ferrer (Eds.), 4th European PKI Workshop: Theory and Practice, EuroPKI 2007 (pp. 78-93). Berlin, Heidelberg: Springer-Verlag.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3581

Start Page


  • 78

End Page


  • 93

Place Of Publication


  • Berlin, Heidelberg

Abstract


  • In Information Processing Letters 2006, Tan pointed out that

    the anonymous signcryption scheme proposed by Yang, Wong and Deng

    (YWD) in ISC 2005 provides neither confidentality nor anonymity. However,

    no discussion has been made on whether YWD scheme can be

    made secure. In this paper, we propose a modification of YWD scheme

    which resolves the security issues of the original scheme without sacrificing

    its high efficiency and simple design. Indeed, we show that our

    scheme achieves confidentiality, existential unforgeability and anonymity

    with more precise reduction bounds. In addition, our scheme further improves

    the efficiency when compared with YWD, with reduced number

    of operations for both signcryption and de-signcryption.

UOW Authors


  •   Li, Chung Ki (external author)
  •   Yang, Guomin
  •   Wong, Duncan S. (external author)
  •   Deng, Xiaotie (external author)
  •   Chow, Sherman S. M.. (external author)

Publication Date


  • 2007

Citation


  • Li, C. Ki., Yang, G., Wong, D. S., Deng, X. & Chow, S. S M. (2007). An efficient signcryption scheme with key privacy. In J. Lopez, P. Samarati & J. L.. Ferrer (Eds.), 4th European PKI Workshop: Theory and Practice, EuroPKI 2007 (pp. 78-93). Berlin, Heidelberg: Springer-Verlag.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3581

Start Page


  • 78

End Page


  • 93

Place Of Publication


  • Berlin, Heidelberg