Re: [PATCH] (0/4) Entropy accounting fixes
Oliver Neukum (email@example.com)
Mon, 19 Aug 2002 12:25:22 +0200
Am Montag, 19. August 2002 12:15 schrieb Marco Colombo:
> On Mon, 19 Aug 2002, Theodore Ts'o wrote:
> > P.S. /dev/urandom should probably also be changed to use an entirely
> > separate pool, which then periodically pulls a small amount of entropy
> > from the priamry pool as necessary. That would make /dev/urandom
> > slightly more dependent on the strength of SHA, while causing it to
> > not draw down as heavily on the entropy stored in /dev/random, which
> > would be a good thing.
> Shouldn't it be moved to userpace, instead? Pulling a small amount
> of entropy from /dev/random can be done in userspace, too. And the
1. You create a problem for in kernel users of random numbers.
2. You forgo the benefit of randomness by concurrent access to /dev/urandom
3. You will not benefit from hardware random number generators as easily.
> application could choose *how often* and *how many* bits to pull.
If you really care, you can implement this for /dev/urandom, too.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to firstname.lastname@example.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/