Thread (9 messages) flat view 9 messages, 4 authors, 2017-02-09

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

From: Stephan Müller <hidden>
Date: 2017-02-09 09:27:29
Also in: lkml

Am Donnerstag, 9. Februar 2017, 02:04:32 CET schrieb Alden Tondettar:

Hi Alden,
On Thu, Feb 09, 2017 at 07:47:25AM +0100, Greg Kroah-Hartman wrote:
quoted
On Wed, Feb 08, 2017 at 08:31:26PM -0700, Alden Tondettar wrote:
quoted
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.
Furthermore, this function is only implemented on x86. On other arches, it is 
a noop.

Ciao
Stephan
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