The Decentralized Identifier (DID) in the DNS
draft-mayrhofer-did-dns-02

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Network Working Group                                       A. Mayrhofer
Internet-Draft                                               nic.at GmbH
Intended status: Standards Track                               D. Klesev
Expires: February 26, 2020
                                                            M. Sabadello
                                                        Danube Tech GmbH
                                                         August 25, 2019

             The Decentralized Identifier (DID) in the DNS
                       draft-mayrhofer-did-dns-02

Abstract

   This document specifies the use of the URI Resource Record Type to
   publish Decentralized Identifiers (DIDs) in the DNS.

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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   This Internet-Draft will expire on February 26, 2020.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Use of the 'URI' RRType . . . . . . . . . . . . . . . . . . .   3
     3.1.  Owner Name Scoping, Target  . . . . . . . . . . . . . . .   3
     3.2.  Weight, Priority  . . . . . . . . . . . . . . . . . . . .   3
   4.  Location of the Records . . . . . . . . . . . . . . . . . . .   4
     4.1.  Host Names  . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Email Addresses (Experimental)  . . . . . . . . . . . . .   4
   5.  Example . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   6.  Considered Alternatives . . . . . . . . . . . . . . . . . . .   4
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   10. Changes . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     10.1.  draft-mayrhofer-did-dns-02 . . . . . . . . . . . . . . .   5
     10.2.  draft-mayrhofer-did-dns-01 . . . . . . . . . . . . . . .   6
     10.3.  draft-mayrhofer-did-dns-00 . . . . . . . . . . . . . . .   6
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     11.2.  Informative References . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   Decentralized Identifiers (DIDs) [W3C-DID] use a Uniform Resource
   Identifier (URI) scheme [RFC3986] to identify persons, organizations,
   or things in decentralized infrastructure, such as blockchains and
   distributed ledgers.

   DIDs are structured around "methods", each method defining the syntax
   of the method specific identifier and the operations on the
   respective DIDs (See Section 3.2 of [W3C-DID] and [DID-METHODS]).
   For many methods, the method specific identifier is not human-
   friendly (for example, hash values referring to transactions on a
   blockchain).  Most DIDs are therefore inherently hard to memorize for
   humans.

   By referring to DIDs from the DNS, those hard to memorize identifiers
   can be discovered via well known, human friendly and widely
   established names.  This document specifies how DIDs can be published
   in the DNS for discovery on the base of host names and email
   addresses.

   Since DIDs use a URI scheme ('did'), this specification leverages the
   existing URI DNS Resource Record Type (RRType) [RFC7553].  Records

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