Re: fun with nonces

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