Re: Impact of [SHG2000] on the ECDL Charity

From: Robert Harley (Robert.Harley@inria.fr)
Date: Thu Feb 10 2000 - 12:17:21 MET

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    kctang (kctang8@ie.cuhk.edu.hk) wrote:
    >Obviously someone would relate [...Gaudry-Hess-Smart paper...]
    >with Certicom's ECC challenge

    The Gaudry-Hess-Smart result applies to curves over fields of the form
    GF(2^n) with n composite whereas Certicom challenges use curves over
    GF(p) or GF(2^n) with n prime.

    In some rare cases the GHS method can be used with n prime, but none
    of the Certicom curves appear to be subject to it.

    Bye,
      Rob.



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