Re: [Rats] OIDs for profile (was Re: IANA pre-RFC code points)

Thomas Fossati <tho.ietf@gmail.com> Mon, 01 March 2021 07:04 UTC

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From: Thomas Fossati <tho.ietf@gmail.com>
Date: Mon, 1 Mar 2021 07:03:46 +0000
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To: Laurence Lundblade <lgl@island-resort.com>
Cc: "Smith, Ned" <ned.smith@intel.com>, Henk Birkholz <henk.birkholz@sit.fraunhofer.de>, Thomas Fossati <Thomas.Fossati@arm.com>, "rats@ietf.org" <rats@ietf.org>, Simon Frost <Simon.Frost@arm.com>, Adrian Shaw <Adrian.Shaw@arm.com>, Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: Re: [Rats] OIDs for profile (was Re: IANA pre-RFC code points)
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Hi Laurence, thanks for the PR!

On Mon, Mar 1, 2021 at 3:11 AM Laurence Lundblade <lgl@island-resort.com> wrote:
>
> FYI, one of the implications of using an OID here is that to translate a token to/from CBOR to JSON will require code to turn CBOR OIDs into text string dotted-decimal OIDs and vice versa. That’s going to require a full encoder/decoder of the ASN.1 OID format.
>
> This is probably OK because:
> - this is nothing near a full ASN.1 encoder/decoder
> - this will happen mostly on servers where code size is not an issue
>
> Note that the plan to format an OID in JSON is to use a text string like “1.2.20.1”.
>
> (I’m working on code that will translate CBOR tokens to JSON; it’s a good validation of the EAT draft).

We have an implementation that can do this [1].  Once you have yours
up & running it'd be great to get together and define a bunch of test
cases to exercise the full round trip between codebases.

We are at the RATS hackathon table all week if you are interested.

cheers!

[1] https://github.com/veraison/eat/blob/c058d63f0079e62819434681d0cbf9a5283b8fef/eat_test.go#L164)