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Re: [Cbor] draft-ietf-cbor-tags-oid, applicability to Private Enterprise Numbers

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 29 October 2020 22:35 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Brendan Moran <Brendan.Moran@arm.com>
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Date: Thu, 29 Oct 2020 18:34:59 -0400
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Subject: Re: [Cbor] draft-ietf-cbor-tags-oid, applicability to Private Enterprise Numbers
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Brendan Moran <Brendan.Moran@arm.com> wrote:
    > It seems to me that Private Enterprise Numbers (PENs) are a
    > particularly unique use case. It seems reasonable to predict that users
    > of PENs will want the ability to encode these in CBOR. Given that there
    > is a large number of registrations under the PEN prefix, it seems to me
    > that this is a reasonable case in which to allocate a tag.

    > I propose that we add a new tag, 112, with the same semantics as 110
    > except that the OID is always relative to the IANA PEN OID
    > (1.3.6.1.4.1)

I agree.

    > If this proposal is adopted, I intend to write it into SUIT
    > manifests. While it makes no size or semantic difference in SUIT—using
    > tag 110 is fine and unambiguous in this context—I think that a
    > dedicated tag is a better option.

good.

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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