Notable CBOR Tags
draft-bormann-cbor-notable-tags-02

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Network Working Group                                         C. Bormann
Internet-Draft                                    Universität Bremen TZI
Intended status: Informational                              25 June 2020
Expires: 27 December 2020

                           Notable CBOR Tags
                   draft-bormann-cbor-notable-tags-02

Abstract

   The Concise Binary Object Representation (CBOR, RFC 7049) is a data
   format whose design goals include the possibility of extremely small
   code size, fairly small message size, and extensibility without the
   need for version negotiation.

   In CBOR, one point of extensibility is the definition of CBOR tags.
   RFC 7049 and its revision 7049bis define a basic set of tags as well
   as a registry that can be used to contribute additional tag
   definitions [IANA.cbor-tags].  Since RFC 7049 was published, some 80
   tag definitions have been added to that registry.

   The present document provides a roadmap to a large subset of these
   tag definitions.  Where applicable, it points to a IETF standards or
   standard development document that specifies the tag.  Where no such
   document exists, the intention is to collect specification
   information from the sources of the registrations.  After some more
   development, the present document is intended to be useful as a
   reference document for the IANA registrations of the CBOR tags the
   definitions of which have been collected.

Note to Readers

   This is an individual submission to the CBOR working group of the
   IETF, https://datatracker.ietf.org/wg/cbor/about/
   (https://datatracker.ietf.org/wg/cbor/about/).  Discussion currently
   takes places on the github repository https://github.com/cabo/
   notable-tags (https://github.com/cabo/notable-tags).  If the CBOR WG
   believes this is a useful document, discussion is likely to move to
   the CBOR WG mailing list and a github repository at the CBOR WG
   github organization, https://github.com/cbor-wg (https://github.com/
   cbor-wg).

   The current version is true work in progress; some of the sections
   haven't been filled in yet, and in particular, permission has not
   been obtained from tag definition authors to copy over their text.

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Internet-Draft              Notable CBOR Tags                  June 2020

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 27 December 2020.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
   as described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  RFC 7049 (CBOR) . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Tags Related to Those Defined in RFC 7049 . . . . . . . .   5
   3.  Security  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  RFC 8152 (COSE) . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  RFC 8392 (CWT)  . . . . . . . . . . . . . . . . . . . . .   6
   4.  CBOR-based Representation Formats . . . . . . . . . . . . . .   6
     4.1.  YANG-CBOR . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Protocols . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  DOTS  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.2.  RAINS . . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Datatypes . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  Advanced arithmetic . . . . . . . . . . . . . . . . . . .   8
     6.2.  Variants of undefined . . . . . . . . . . . . . . . . . .   8

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