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[TD-TF] minutes - 2 June 2021

From: Kazuyuki Ashimura <ashimura@w3.org>
Date: Mon, 12 Jul 2021 17:08:30 +0900
Message-ID: <87h7h02bup.wl-ashimura@w3.org>
To: public-wot-wg@w3.org
available at:

also as text below.

Thanks a lot for taking the minutes, Ege and Michael Koster!



      [1] https://www.w3.org/

                             íV DRAFT íV
                             WoT-WG - TD-TF

02 June 2021

   [2]Agenda. [3]IRC log.

      [2] https://www.w3.org/WoT/IG/wiki/WG_WoT_Thing_Description_WebConf#June_2.2C_2021

      [3] https://www.w3.org/2021/06/02-wot-td-irc


          Ege_Korkan, Kaz_Ashimura, Michael_Koster,
          Michael_McCool, Philipp_Blum, Tomoaki_Mizushima



          Ege, mjk


    1. [4]minutes review
    2. [5]PRs
         1. [6]PR #1156
         2. [7]PR #1151

Meeting minutes

  minutes review

   <kaz> [8]May-26

      [8] https://www.w3.org/2021/05/26-wot-td-minutes.html

   <kaz> approved

   <Ege> [9]https://github.com/w3c/wot-thing-description/pull/1156

      [9] https://github.com/w3c/wot-thing-description/pull/1156


    PR #1156

   <kaz> [10]PR 1156 - fix links, combo, date in the schema

     [10] https://github.com/w3c/wot-thing-description/pull/1156

   PR #1156

   Ege: subprotocol is an enum of the possible subprotocols

   (reviewing problems in PR)

   McCool: questions about use of "rel"

   Ege: link validation is complicated due to the icon link type

   Ege: it is correct

   McCool: try to reduce lines where the brackets can be on one

   Koster: processors seem to always expand the brackets

   McCool: (line by line review of the diff)

   Mizushima: there is a problem on line 2

   McCool: (fixed)

   McCool: any objections to merging?

   McCool: OK

   McCool: review other PRs

    PR #1151

   <kaz> [11]PR 1151 - WIP: TD Signatures

     [11] https://github.com/w3c/wot-thing-description/pull/1151

   McCool: signatures, PR #1151

   McCool: still some things yet to do

   McCool: added support for XML signatures that have signatures
   for sub-sections of the document

   McCool: it creates a digest and signs individual items in the

   McCool: there needs to be a way to support keys in the TD
   íK or it could be a URL that points to the keys

   McCool: there is a question of which curves to support beyond
   íK testing could impose a practical limit on the number of
   curves we can support

   McCool: there is an issue with including the digest as a
   mandatory element in TD

   McCool: there could be 2-step validation, before and after

   McCool: another question about expanding references
   íK we can't validate a TD with expanded references

   McCool: we could build reference expansion into the processing
   íK the expanded form wouldn't be stored or validated

   McCool: with PKI, the signatures aren't compared directly but
   decrypted and the hash compared

   McCool: it introduces a dependency on signature type

   Philipp: the curve selection is important; it's good to support
   a lot of curves, but maybe we don't need to test optional

   McCool: we can't use a curve that we can't test, so we will
   need a small set

   Philipp: we have the same situation in other areas, for example
   CBOR + JSON issue in the profiles

   McCool: the testing doesn't need to include the mathematics of
   the curves
   íK we just use a library

   kaz: the main consideration is 2 implementations

   McCool: the TD feature we are testing is the signature wrapper

   McCool: we should test the 3 reference types json pointer, json
   path, and xpath

   Philipp: we should test the DID method

   McCool: we have a general need to test URI methods

   McCool: we get to a question of coverage vs. requirement

   McCool: would like to merge this PR but it could be TD 2.0

   McCool: any other PRs?

   McCool: canonicalization wrt prefixes is still a question

   McCool: any other topics?
   íK AOB?
   íK adjourn

    Minutes manually created (not a transcript), formatted by
    [12]scribe.perl version 136 (Thu May 27 13:50:24 2021 UTC).

     [12] https://w3c.github.io/scribe2/scribedoc.html

Received on Monday, 12 July 2021 08:08:35 UTC

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