Re: Re: Still wondering about random numbers...

Allan Engelhardt <allane@cybaea.com>

From: Allan Engelhardt <allane@cybaea.com>
To: Doug McNaught <doug@wireboard.com>
Cc: Bruno Wolff III <bruno@wolff.to>, pgsql-general@postgresql.org
Date: 2001-08-08T19:13:24Z
Lists: pgsql-general
Doug McNaught wrote:

> Allan Engelhardt <allane@cybaea.com> writes:
>
> > "/dev/urandom is not really better than rand(3) or random(3) *in
> > this situation* [i.e. when reads from /dev/random stalls and there
> > is no system entropy]"
>
> I would still disagree.  The difference for crypto purposes between a
> CRNG seeded with real entropy (/dev/urandom) and an LCG (libc
> functions) is huge.  The former is useful (with caveats); the latter
> is trivially breakable.

Fair comment.  I agree.  Thanks for the clarification.


Allan.