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[Cbor] Private tag numbers

Tony Putman <Anthony.Putman@dyson.com> Fri, 21 April 2023 16:53 UTC

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From: Tony Putman <Anthony.Putman@dyson.com>
To: "cbor@ietf.org" <cbor@ietf.org>
Thread-Topic: Private tag numbers
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Date: Fri, 21 Apr 2023 16:53:33 +0000
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Subject: [Cbor] Private tag numbers
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Hi all,

I'm defining a data schema for purely internal use (no interoperability needed) and encoding it in CBOR. There are points where we may want to vary/extend the contents with new data, and I thought the natural way to do this would be to define different tags to hold the data. I expected to find a set of tag numbers defined in IANA for private use, but there don't appear to be any.

- Is this a misuse of tags?  And if so, what would be the more natural way to specify this?
- Is this a general problem that people face and would it be worth defining a set of private tags which are known to be context-sensitive and not interoperable?

Thoughts/comments on this will be gratefully received.

Tony

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