On Tuesday 19 May 2009 08:14:36 pm David-Sarah Hopwood wrote: > Correction: for ECDSA there are two options -- q is prime, or > q = 2^m.
Right. If q=2^m (which was specified in the LAFS paper, IIRC) then the
distribution of x*y mod q is not uniform. If q is prime, then this problem
disappears.
Shawn.
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