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Python Random Number Generator for OTP

On Mon, Jul 22, 2013 at 11:46 PM, Andy Isaacson <[email protected]> wrote:

> On Mon, Jul 22, 2013 at 04:50:55PM -0400, Tom wrote:
> > Does anyone on the list have some Python source code for an
> > OTP-focused random number generator they'd be willing to share? I'm
> > interested in seeing how different people would approach it?
> Why not simply use /dev/urandom (after ensuring you have enough entropy,
> etc, etc).  If you don't have systemic entropy collection, Python is not
> going to be able to help.
> Of course any entropy pool measurement is merely computationally
> feasible randomness; you'll need to measure a physically
> nondeterministic process directly if you want true information theoretic
> entropy.  Something like an entropykey should do the trick, if you trust
> their design and that they haven't included backdoors.

Andy, maybe you or someone else has some insight into something I've
wondered about:

Is there a secure way to timeshare a single entropy source such as an
entropy key? High-quality entropy sources are often fragile, expensive, or
difficult to manufacture and maintain. If Alice has a friggin' amazing
entropy source, and Bob wants to use it from afar, what would be the best
way for Alice to let Bob retrieve data from the entropy source when she
wasn't using it?


> -andy

Yan Zhu
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