full-disclosure - Re: DakaRand

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Date: Mon, 20 Aug 2012 10:16:35 +0100
From: Ben Laurie <ben@...ks.org>
To: Dan Kaminsky <dan@...para.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: DakaRand

On Sun, Aug 19, 2012 at 11:12 PM, Dan Kaminsky <dan@...para.com> wrote:
>
>
> On Sun, Aug 19, 2012 at 3:03 PM, Ben Laurie <ben@...ks.org> wrote:
>>
>> On Sun, Aug 19, 2012 at 9:28 PM, Dan Kaminsky <dan@...para.com> wrote:
>> >
>> > On Sun, Aug 19, 2012 at 10:13 AM, Ben Laurie <ben@...ks.org> wrote:
>> >>
>> >> On Sun, Aug 19, 2012 at 5:42 PM, Dan Kaminsky <dan@...para.com> wrote:
>> >> > entropy gathering has gotten *worse* (via abandonment of interrupts),
>> >> > not
>> >> > better.
>> >>
>> >> Entropy gathering in _one particular OS_. Credit where its due, please.
>> >
>> >
>> > My understanding is that bad keys were detected on more than just Linux,
>> > which implies starvation on everything on everything not out of Redmond.
>> >
>> > What interesting approaches are you aware of that deserve credit?  Not a
>> > rhetorical question, I'm genuinely curious.
>>
>> I was referring to the abandonment of interrupts in Linux. You think
>> that other OSes have got worse at entropy gathering? And when did
>> "more than Linux" start implying "not Windows"?
>
>
> My assumption is that the other Unixes weren't looking at interrupt timing
> to begin with, i.e. they've always been as starved for entropy as Linux
> eventually became.

Well, you know what they say about assumptions.

>  That being said, does VXWorks even *have* an OS provided
> strong random number generator?

Don't know, don't care.

> Windows has CryptGenRandom, which AFAIK doesn't block, and survives
> everything but VM suspend/restore.

FreeBSD also doesn't block.

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