Re: [PATCH] (0/4) Entropy accounting fixes

From: Bernd Eckenfels (
Date: Tue Aug 20 2002 - 07:51:27 EST

On Sun, Aug 18, 2002 at 11:48:58AM +0200, Ralf Baechle wrote:
> On Sun, Aug 18, 2002 at 09:31:41AM +0200, Bernd Eckenfels wrote:
> > dean gaudet <> wrote:
> > > many southbridges come with audio these days ... isn't it possible to get
> > > randomness off the adc even without anything connected to it?
> >
> > they also come with RNGs.
> I know of one soundcard RND that is simply implemented as a small
> mask programmed ROM full of random numbers. That's good enough for
> audio purposes but doesn't even qualify for /dev/urandom's use ...

I am taking about southbridges with random sources, not about soundchips :)

They can be used to contribute some bits to the entropy pool. I dont think
they are the only source one should trust. But the specs say that they are
no PNRG, and I havent heared about too disasterous results from statistical
tests. So they are better than ethernet drivers, anyway.


  (OO)      -- --
 ( .. )  ecki@{,,}
  o--o     *plush*  2048/93600EFD  eckes@irc  +497257930613  BE5-RIPE
(O____O)  When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl!
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Fri Aug 23 2002 - 22:00:20 EST