Re: [secdir] [Anima] Secdir last call review of draft-ietf-anima-bootstrapping-keyinfra-16

Eliot Lear <lear@cisco.com> Wed, 03 October 2018 06:20 UTC

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To: Michael Richardson <mcr+ietf@sandelman.ca>, Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: anima@ietf.org, Security Directorate <secdir@ietf.org>
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From: Eliot Lear <lear@cisco.com>
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Date: Wed, 3 Oct 2018 08:20:30 +0200
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Subject: Re: [secdir] [Anima] Secdir last call review of draft-ietf-anima-bootstrapping-keyinfra-16
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Hi Michael:


On 03.10.18 04:35, Michael Richardson wrote:
> 1) you run a half-mind Registrar that is on the secure side of your air-gap, and it has
>    a USB interface (or 9-track tape drive... statscan.gc.ca used to run
>    unidirectional UUCP over 9-track tapes walked across the machine room air-gap)
>    on which it can place voucher requests, and receive vouchers from
>    other-half-mind Registrar.
>
>    This lets you use nonced vouchers, potentially with expiry dates.
>    Maybe very long expiry dates.  Or maybe your personnel-safety-critical
>    equipment has a best-before date, and so it's acceptable for you to have
>    vouchers only until that date.

One approach I would like would be to get the voucher size down to the
point where it could reasonably fit into a QR code.  Then it's a scan. 
I see that as future work.

Eliot