From: "Theodore Ts'o" <tytso@mit.edu>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, hpa@linux.intel.com,
Amos Kong <akong@redhat.com>,
ricardo.neri-calderon@linux.intel.com,
Amit Shah <amit.shah@redhat.com>
Subject: Re: [PATCH] virtio: rng: add derating factor for use by hwrng core
Date: Wed, 13 Aug 2014 18:44:40 -0400 [thread overview]
Message-ID: <20140813224440.GA10808@thunk.org> (raw)
In-Reply-To: <87zjf88awc.fsf@rustcorp.com.au>
On Thu, Aug 14, 2014 at 04:39:07AM +0930, Rusty Russell wrote:
> The khwrngd thread is started when a hwrng device of sufficient
> quality is registered. The virtio-rng device is backed by the
> hypervisor, and we trust the hypervisor to provide real entropy.
>
> A malicious hypervisor is a scenario that's irrelevant -- such a setup
> is bound to cause all sorts of badness, and a compromised hwrng is not
> the biggest threat.
s/malicious/malicious or badly implemented/
s/is not the biggest threat/is the least of the user's worries/
> Given this, we are certain the quality of randomness we receive is
> perfectly trustworthy. Hence, we use 100% for the factor, indicating
> maximum confidence in the source.
s/we are certain/we might as well assume that/
I won't insist on the wording changes, but I think it's a better way
of phrasing things.
Cheers,
- Ted
next prev parent reply other threads:[~2014-08-13 22:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-13 19:09 [PATCH] virtio: rng: add derating factor for use by hwrng core Rusty Russell
2014-08-13 20:49 ` H. Peter Anvin
2014-08-13 22:44 ` Theodore Ts'o [this message]
2014-08-14 18:51 ` Amos Kong
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