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Re: Photuris Primality verification needed

Phil Karn writes:
> >I don't know.  Maybe the right thing to do is require conforming
> >implementations to support a large modulus but include recommended
> >smaller moduli.  Then Alice can always force Bob to use the large
> >modulus but, if both agree, they can use something smaller from the
> >standard or even their own home-grown modulus.
> Thanks. That's pretty much what we are doing -- requiring a particular
> 1024-bit modulus but recommending several others as options.

I think Brian is also suggesting that it would be good if people could
negotiate new and previously unheard of modulii if they wanted to.