[Cryptography] Real-world crypto/PRNG problem: Bridge

[Thierry Moreau]

On 22/08/16 02:20 PM, Salz, Rich wrote:

> 2. They are using the same seed to generate enormous numbers of sets of hands (76,000) at a time

One random hand is a selection among 52! which is about 225 bits of entropy.

Repeat this 76,000 times and you get roughly 17 million bits.

Any single PRNG instance solution is going to trigger endless 
discussions among experts. The client organization/community 
(presumably) has little ability to select a good expert.

Thus, this would be a good sell for the so-called "quantum" random 
number generators (actually based on an arrangement of single photon 
detector(s)).

I.e. without millions of truly random bits, a typical client community 
participant would have hard time to acknowledge that while e.g. 75,995 
hands are deterministically dependent on the first 5, it does not 
matter. Computational independence is appealing to a significant portion 
of exerts, but not necessarily to a player/gamer.

- Thierry Moreau