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Cryptanalysis of the Sakazaki-Okamoto-Mambo ID-based Key Distribution System over Elliptic Curves

In: Finite Fields with Applications to Coding Theory, Cryptography and Related Areas

Author

Listed:
  • Minghua Qu

    (CerticomResearch)

  • Doug Stinson

    (University of Waterloo, Department of C&O)

  • Scott Vanstone

    (CerticomResearch
    University of Waterloo, Department of C&O)

Abstract

In 1997, H. Sakazaki, E. Okamato and M. Mambo [6] proposed an ID-based key distribution system on an elliptic curve over ℤ n . We will cryptanalyze the scheme and demonstrate that when the hashed ID length is about 160 bits, the scheme is insecure. To be specific, after requesting a small number of keys from the Center, our attack allows a new valid key to be constructed without any further interaction with the Center.

Suggested Citation

  • Minghua Qu & Doug Stinson & Scott Vanstone, 2002. "Cryptanalysis of the Sakazaki-Okamoto-Mambo ID-based Key Distribution System over Elliptic Curves," Springer Books, in: Gary L. Mullen & Henning Stichtenoth & Horacio Tapia-Recillas (ed.), Finite Fields with Applications to Coding Theory, Cryptography and Related Areas, pages 263-269, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-59435-9_21
    DOI: 10.1007/978-3-642-59435-9_21
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