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Date: Thu, 9 Feb 2017 02:04:32 -0700
From: Alden Tondettar <alden.tondettar@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>, Arnd Bergmann <arnd@arndb.de>,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] random: Don't overwrite CRNG state in crng_initialize()
Message-ID: <20170209090432.GA18039@rincewind>
References: <1486611086-2290-1-git-send-email-alden.tondettar@gmail.com>
 <20170209064725.GA4363@kroah.com>
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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.

Alden