[Cbor] Why 0x42_4F_52 (was Re: 🔔 WG adoption call on draft-richardson-cbor-file-magic)

Laurence Lundblade <lgl@island-resort.com> Tue, 16 February 2021 20:13 UTC

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From: Laurence Lundblade <lgl@island-resort.com>
In-Reply-To: <YCwajOdK//yoqe20@hephaistos.amsuess.com>
Date: Tue, 16 Feb 2021 13:13:22 -0700
Cc: cbor@ietf.org, draft-richardson-cbor-file-magic@ietf.org, cbor-chairs@ietf.org
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Can you say why part 3, 0x42_4F_52, is added? The only reason I can think of is that 55799 is not unique enough. 

If we need it, can it be at the start so that the part 2 tag can be part 3 so you can just hand the end part to protocol decoders for COSE, CWT, CoSWID and so on? With the 0x42_4F_52 in there, you can’t do that.


> On Feb 16, 2021, at 12:18 PM, Christian Amsüss <christian@amsuess.com> wrote:
> Hello CBOR group,
> This starts a WG adoption call on
> <https://tools.ietf.org/html/draft-richardson-cbor-file-magic-01>,
> ending on 2021-03-02 (Tuesday before the IETF). Please reply to this
> thread by stating support or opposition of the adoption.
> Even if you have voiced your opinion in the interim meeting where this
> was presented[1], please send something (be it only a "+1") anyway, for
> this helps us document the WG's support.
> CBOR Chairs
> Francesca & Christian
> [1]: https://datatracker.ietf.org/meeting/interim-2021-cbor-03/session/cbor
> -- 
> A beginning is the time for taking the most delicate care that the
> balances are correct.
>  -- Princess Irulan, Manual of Muad'Dib
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