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From: Andy Smith <andy@strugglers.net>
To: Sarah Newman <srn@prgmr.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: PV random device
Date: Tue, 6 Oct 2015 04:29:07 +0000	[thread overview]
Message-ID: <20151006042904.GJ4243@bitfolk.com> (raw)
In-Reply-To: <56134A3F.3090809@prgmr.com>

Hi Sarah,

On Mon, Oct 05, 2015 at 09:12:47PM -0700, Sarah Newman wrote:
> On 10/05/2015 08:35 PM, Andy Smith wrote:
> > So, I've been keeping (PV) domUs topped up with entropy by giving
> > them access to hardware RNGs (initially Entropy Keys, but since the
> > company making them failed I've switched to OneRNGs).
> 
> This is not a satisfactory solution for us because even if we were
> willing to do USB passthrough, the number of hardware devices
> needed would be expensive and difficult to manage.

I don't find it a problem as:

- Your typical EntropyKey or OneRNG can generate quite a bit of
  entropy. Maybe 32 kilobytes per second for ~$50 each.

- You can access them over the network so no USB passthrough needed.

- Making it opt-in means only people who actually know and care what
  entropy is will use it. :)

So for me it's a somewhat hacky but still scalable solution. My main
concern is that it's going to some length to provide a service that
isn't actually required.

Cheers,
Andy

-- 
> I'd be interested to hear any (even two word) reviews of their sofas…
Provides seating.
 — Andy Davidson

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  reply	other threads:[~2015-10-06  4:29 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-06  1:33 PV random device Sarah Newman
2015-10-06  3:35 ` Andy Smith
2015-10-06  4:12   ` Sarah Newman
2015-10-06  4:29     ` Andy Smith [this message]
2015-10-06  4:34       ` Sarah Newman
2015-10-06  4:50       ` Steven Haigh
2015-10-06  5:18         ` Andy Smith
2015-10-06  7:40           ` Sarah Newman
2015-10-06  9:15 ` Ian Campbell

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