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From: Stefan Claas <pollux@tilde.club>
Newsgroups: sci.crypt
Subject: Re: fun with nonces
Date: Fri, 5 Jul 2024 17:33:30 -0000
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Rich wrote:
> Stefan Claas <pollux@tilde.club> wrote:
> > Rich wrote:
> > > Stefan Claas <pollux@tilde.club> wrote:
> > > > He does not need to send Alice the nonces, once he
> > > > arrived, because they both have a shared secret.
> > > > Alice and Bob can generate them by themselves, no
> > > > matter what timezone they are in and the nonces will
> > > > be random and can be re-generated with the same values
> > > 
> > > They cannot be simultaneously "random" and be capable of being 
> > > "re-generated with the same values".
> > > 
> > > At best, they are psudeo-random.  And, looking over the code, indeed, 
> > > they are generated from a psudeo-random generator, go's 'rand'.
> > 
> > It uses now xorshift128+ instead of math.rand, to have a  128bit
> > seed instead of 64bit.
> 
> And it is still psudeo-random.

And that is perfectly fine, unless of course someone here would show 
me a better solution, for using nonces without transmitting them.

-- 
Regards
Stefan