[Rats] Re: [Technical Errata Reported] RFC9999 (9088)

[Steven Bellock <[e-mail]>]

Due to the latency of the IETF spam filter there will be a duplicate issue filed by myself, followed by a duplicate issue filed by @Thomas Fossati<mailto:[e-mail]>.

________________________________
From: Deb Cooley <[e-mail]>
Sent: Thursday, August 13, 2026 3:35 AM
To: Thomas Fossati <[e-mail]>
Cc: [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; [e-mail] <[e-mail]>; Steven Bellock <[e-mail]>
Subject: Re: [Technical Errata Reported] RFC9999 (9088)

External email: Use caution opening links or attachments

Thanks, I've added it to my 'to do' list.

Deb

On Wed, Aug 12, 2026 at 3:10 AM Thomas Fossati <[e-mail]<mailto:[e-mail]>> wrote:
On Mon, Aug 10, 2026 at 6:05 PM <[e-mail]<mailto:[e-mail]>> wrote:
>
> The following errata report has been submitted for RFC9999,
> "Remote ATtestation procedureS (RATS) Conceptual Message Wrapper (CMW)"
>
> --------------------------------------
> You may review the report below and at:
> https://errata.rfc-editor.org/eid9088/
>
> --------------------------------------
> Type: Technical
> Reported by: Steven Bellock <[e-mail]<mailto:[e-mail]>>
>
> Section 6 and 9.6.2 says:
>
> Original Text
> -------------
> Section 6
> ----------
>    $cbor-tag /= tag-cm-cbor<1668547091, cbor-collection>
>    $cbor-tag /= tag-cm-cbor<1668547092, signed-cbor-cmw>
>
>    $cbor-tag /= tag-cm-data<1668547093> ; bytes(cmw+json collection)
>    $cbor-tag /= tag-cm-data<1668547094> ; bytes(cmw+jws)
>
> Table 4
> --------
>    +============+===============================+
>    | Tag Number | Tag Content                   |
>    +============+===============================+
>    | 1668547091 | bytes .cbor cbor-collection   |
>    +------------+-------------------------------+
>    | 1668547092 | bytes .cbor signed-cbor-cmw   |
>    +------------+-------------------------------+
>    | 1668547093 | bytes-wrapped json-collection |
>    +------------+-------------------------------+
>    | 1668547094 | bytes-wrapped signed-json-cmw |
>    +------------+-------------------------------+
>
> Figure 7
> ---------
>    $cbor-tag /= tag-cm-cbor<1668547091, cbor-collection>
>    $cbor-tag /= tag-cm-cbor<1668547092, signed-cbor-cmw>
>    $cbor-tag /= tag-cm-data<1668547093> ; bytes(cmw+json collection)
>    $cbor-tag /= tag-cm-data<1668547094> ; bytes(cmw+jws)
>
> Corrected Text
> --------------
> Section 6
> ----------
>    $cbor-tag /= tag-cm-cbor<1668547091, cbor-collection>
>    $cbor-tag /= tag-cm-data<1668547092> ; bytes(cmw+json collection)
>
>    $cbor-tag /= tag-cm-cbor<1668547093, signed-cbor-cmw>
>    $cbor-tag /= tag-cm-data<1668547094> ; bytes(cmw+jws)
>
> Table 4
> --------
> Tag Number      Tag Content
> 1668547091      bytes .cbor cbor-collection
> 1668547092      bytes-wrapped json-collection
> 1668547093      bytes .cbor signed-cbor-cmw
> 1668547094      bytes-wrapped signed-json-cmw
>
> Figure 7
> ---------
>    $cbor-tag /= tag-cm-cbor<1668547091, cbor-collection>
>    $cbor-tag /= tag-cm-data<1668547092> ; bytes(cmw+json collection)
>    $cbor-tag /= tag-cm-cbor<1668547093, signed-cbor-cmw>
>    $cbor-tag /= tag-cm-data<1668547094> ; bytes(cmw+jws)
>
> Notes
> -----
> Under the assumption that Table 3 and https://www.iana.org/assignments/core-parameters
> are the authoritative IDs, then the RFC9277-calculated tags for cmw+json and cmw+cose
> are swapped in the given section, table, and figure.
>
> Instructions:
> -------------
> This erratum is currently posted as "Reported". Please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party
> will log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC9999 (draft-ietf-rats-msg-wrap)
> --------------------------------------
> Title               : Remote ATtestation procedureS (RATS) Conceptual Message Wrapper (CMW)
> Publication Date    : July 2026
> Author(s)           : H. Birkholz, N. Smith, T. Fossati, H. Tschofenig
> Category            : Proposed Standard
> Source              : rats (sec)
> Stream              : IETF
> Verifying Party     : IESG

The erratum is correct.  We need to swap(1668547092, 1668547093) in
the three places noted by Steven.

cheers!
--
Thomas