IDNA2008 and Unicode 11.0.0
draft-faltstrom-unicode11-06

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Last updated 2018-12-09
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Network Working Group                                       P. Faltstrom
Internet-Draft                                                    Netnod
Intended status: Standards Track                       December 09, 2018
Expires: June 12, 2019

                      IDNA2008 and Unicode 11.0.0
                      draft-faltstrom-unicode11-06

Abstract

   This document describes the changes between Unicode 6.3.0 and Unicode
   11.0.0 in the context of IDNA2008.  It further suggests a path
   forward for the IETF to ensure IDNA2008 follows the evolution of the
   Unicode Standard.

   Some changes have been made in the Unicode Standard related to the
   algorithm IDNA2008 specifies.  IDNA2008 allows adding exceptions to
   the algorithm for backward compatibility; however, this document
   makes no such changes.  Thus this document requests that IANA update
   the tables to Unicode 11.

   The document also recomments that all DNS registries continue the
   practice of calculating a repertoire using conservatism and inclusion
   principles.

   TO BE REMOVED AT TIME OF PUBLICATION AS AN RFC:

   This document is discussed on the i18nrp@ietf.org mailing list of the
   IETF.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 12, 2019.

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Copyright Notice

   Copyright (c) 2018 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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Keywords for Requirement Levels . . . . . . . . . . . . . . .   4
   3.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  IDNA2008 Documents  . . . . . . . . . . . . . . . . . . .   4
     3.2.  Deployment  . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Notable Changes Between Unicode 6.3.0 and 11.0.0  . . . . . .   6
     4.1.  Changes in Unicode 7.0.0  . . . . . . . . . . . . . . . .   6
     4.2.  Changes between Unicode 7.0.0 and 10.0.0  . . . . . . . .   6
     4.3.  Changes in Unicode 11.0.0 . . . . . . . . . . . . . . . .   6
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Non-normative references  . . . . . . . . . . . . . . . .   9
   Appendix A.  Changes from Unicode 6.3.0 to Unicode 7.0.0  . . . .  12
   Appendix B.  Changes from Unicode 7.0.0 to Unicode 8.0.0  . . . .  15
   Appendix C.  Changes from Unicode 8.0.0 to Unicode 9.0.0  . . . .  16
   Appendix D.  Changes from Unicode 9.0.0 to Unicode 10.0.0 . . . .  17
   Appendix E.  Changes from Unicode 10.0.0 to Unicode 11.0.0  . . .  18
   Appendix F.  Code points in Unicode Character Database (UCD)
                format for Unicode 11.0.0  . . . . . . . . . . . . .  20
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  79

1.  Introduction

   The current version of Internationalized Domain Names for
   Applications (IDNA) was largely completed in 2008, and is thus known
   within as "IDNA2008".  It is specified in a series of documents
   listed in Section 3.1.  The IDNA2008 standard includes an algorithm

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   by which a derived property value is calculated based on the
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