Re: [PATCH] HID: add driver for U2F Zero built-in LED and RNG

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Στις Τετ, 14 Νοε 2018 στις 8:33 μ.μ., ο/η Andrej Shadura
<andrew.shadura@xxxxxxxxxxxxxxx> έγραψε:
>
> On 12/11/2018 03:17, Jiri Kosina wrote:
> > On Thu, 1 Nov 2018, Andrej Shadura wrote:
> >
> >> Hi everyone,
> >>
> >> I’ve got a comment from Nick Kossifidis that I probably shouldn’t set
> >> RNG’s quality to 1024. Adding linux-crypto@ to the loop.
> >
> > So, what was this about? Is there any resolution to it? :)
>
> So far, not really. I talked to Keith Packard regarding a similar
> setting in his ChaosKey driver, and I understand his opinion is that it
> is appropriate there since he’s convinced about the quality of the
> hardware he designed. I’m not sure what exactly I should set it to here.
>

The issue is not how good the ChaosKey is but how sure he is that what
gets plugged in is indeed a ChaosKey and not something else that e.g.
outputs only 0s. I suggest that all removable hwrngs are zero-credit
by default, those that will use them will most probably be ok with
changing a setting, verifying in a sense that they are aware of what's
plugged in.


-- 
GPG ID: 0xEE878588
As you read this post global entropy rises. Have Fun ;-)
Nick




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