IANA Registration of Trustword Lists: Guide, Template and IANA Considerations
draft-birk-pep-trustwords-04

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Network Working Group                                       B. Hoeneisen
Internet-Draft                                                   Ucom.ch
Intended status: Standards Track                              H. Marques
Expires: January 9, 2020                                  pEp Foundation
                                                           July 08, 2019

     IANA Registration of Trustword Lists: Guide, Template and IANA
                             Considerations
                      draft-birk-pep-trustwords-04

Abstract

   This document specifies the IANA Registration Guidelines for
   Trustwords, describes corresponding registration procedures, and
   provides a guideline for creating Trustword list specifications.

   Trustwords are common words in a natural language (e.g., English),
   which hexadecimal strings are mapped to.  Such a mapping makes
   verification processes like fingerprint comparisons more practical,
   and less prone to misunderstandings.

Status of This Memo

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   This Internet-Draft will expire on January 9, 2020.

Copyright Notice

   Copyright (c) 2019 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
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   publication of this document.  Please review these documents

Hoeneisen & Marques      Expires January 9, 2020                [Page 1]
Internet-Draft    IANA Registration of Trustword Lists         July 2019

   carefully, as they describe your rights and restrictions with respect
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terms . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  The Concept of Trustword Mapping  . . . . . . . . . . . . . .   4
     2.1.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Previous work . . . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Number of Trustwords for a language . . . . . . . . . . .   5
     2.4.  Language  . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.5.  The nature of the words . . . . . . . . . . . . . . . . .   6
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   4.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   6
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Registration Template (XML chunk) . . . . . . . . . . . .   6
     5.2.  IANA Registration . . . . . . . . . . . . . . . . . . . .   8
       5.2.1.  Language Code (<languagecode>)  . . . . . . . . . . .   8
       5.2.2.  Bit Size (<bitsize>)  . . . . . . . . . . . . . . . .   8
       5.2.3.  Number Of Unique Words (<numberofuniquewords>)  . . .   8
       5.2.4.  Bijectivity (<bijective>) . . . . . . . . . . . . . .   8
       5.2.5.  Version (<version>) . . . . . . . . . . . . . . . . .   8
       5.2.6.  Registration Document(s) (<registrationdocs>) . . . .   9
       5.2.7.  Requesters (<requesters>) . . . . . . . . . . . . . .   9
       5.2.8.  Further Information (<additionalinfo>)  . . . . . . .   9
       5.2.9.  Wordlist (<wordlist>) . . . . . . . . . . . . . . . .  10
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  IANA XML Template Example  . . . . . . . . . . . . .  12
   Appendix B.  Document Changelog . . . . . . . . . . . . . . . . .  13
   Appendix C.  Open Issues  . . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   In public-key cryptography, comparing the respective public key
   fingerprints for each of the communication partners involved is vital
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