IANA Registration of Trustword Lists: Guide, Template and IANA Considerations
draft-birk-pep-trustwords-05

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Network Working Group                                       B. Hoeneisen
Internet-Draft                                                H. Marques
Intended status: Standards Track                          pEp Foundation
Expires: July 12, 2020                                  January 09, 2020

     IANA Registration of Trustword Lists: Guide, Template and IANA
                             Considerations
                      draft-birk-pep-trustwords-05

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 July 12, 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
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Hoeneisen & Marques       Expires July 12, 2020                 [Page 1]
Internet-Draft    IANA Registration of Trustword Lists      January 2020

   to this document.  Code Components extracted from this document must
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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
   to ensure that there is no Man-in-the-Middle (MITM) attack on the
   communication channel.  These fingerprints normally consist of a
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