Re: fun with nonces

On 7/4/2024 10:47 AM, Stefan Claas wrote:

Let's assume Bob travels a lot and he wishes to
communicate encrypted with Alice, while using an
encryption program which uses a nonce as additional
input parameter.
 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
again, per day.
 https://github.com/stefanclaas/nfs
 I Have to do a README which explains this scenario
a bit. Hope you like the idea!
 

Hopefully the nonces were created by a TRNG such that they cannot be repeated expect by pure chance... Fair enough?
Every PRNG has a period and a way to set the starting point.