Re: [core] date-and-time and "created-on" field in constrained-voucher

Carsten Bormann <cabo@tzi.org> Tue, 28 June 2022 20:51 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Tue, 28 Jun 2022 22:50:57 +0200
Cc: Michael Richardson <mcr+ietf@sandelman.ca>, Core <core@ietf.org>, anima@ietf.org
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To: Andy Bierman <andy@yumaworks.com>
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Subject: Re: [core] date-and-time and "created-on" field in constrained-voucher
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On 2022-06-28, at 22:22, Andy Bierman <andy@yumaworks.com> wrote:
> 
> During operation, the optimized encoding is used for any objects with the
> data type.  E.g., tag X for date-and-time, tag Y for ipv4-address, tag Z for ipv6-address.
> The receiver is responsible for converting the special encoding to the correct format
> for the YANG data type.  Storage and exposure of the optimized format are possible,
> but (perhaps) not required.

Do I actually know that a yang item “has” that data type (*)?
It actually could “have” multiple of them (and usually has both a base type and at least one typedef).
Just wondering.

The alternative would be to trigger on the data, so any string that looks like 2022-06-28T20:48:15Z would turn into 1(1656449295).  That has some interesting security considerations, though.

Grüße, Carsten

(*) I.e., name equivalence as opposed to structural equivalence.
Many YANG types are defined via a regexp (pattern)…