Re: [PATCH] random: Don't overwrite CRNG state in crng_initialize()

From: Alden Tondettar
Date: Thu Feb 09 2017 - 04:06:09 EST

On Thu, Feb 09, 2017 at 07:47:25AM +0100, Greg Kroah-Hartman wrote:
> On Wed, Feb 08, 2017 at 08:31:26PM -0700, Alden Tondettar wrote:
> > In short, the situation is:
> >
> > A) No usable hardware RNG or arch_get_random() (or we don't trust it...)
> Wait, why would you not trust arch_get_random()? Is it broken somehow
> on some arches? If so, why not fix that as well?

arch_get_random() makes use of RDRAND and similar CPU features. Some people
do not wish to trust black-box RNG implementations.