The Decentralized Identifier (DID) in the DNS
draft-mayrhofer-did-dns-00

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Network Working Group                                       A. Mayrhofer
Internet-Draft                                                 D. Klesev
Updates: 7553 (if approved)                                  nic.at GmbH
Intended status: Standards Track                            M. Sabadello
Expires: February 7, 2019                               Danube Tech GmbH
                                                          August 6, 2018

             The Decentralized Identifier (DID) in the DNS
                       draft-mayrhofer-did-dns-00

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
   Task Force (IETF).  Note that other groups may also distribute
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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 February 7, 2019.

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
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  The '_did' Service Parameter for the URI RRType . . . . . . .   3
     3.1.  Owner Name  . . . . . . . . . . . . . . . . . . . . . . .   3
     3.2.  Weight, Priority  . . . . . . . . . . . . . . . . . . . .   4
   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  . . . . . . . . . . . . . . . . . . . . . .   5
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   10. Changes . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     10.1.  draft-mayrhofer-did-dns-00 . . . . . . . . . . . . . . .   5
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   5
     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 most methods, the method specific identifier content 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 such a protocol, and
   describes how DIDs can be discovered on the basis of host names and
   email addresses.

   Since DIDs use a URI scheme ('did'), this specification leverages the
   existing URI DNS Resource Record Type [RFC7553] for that purpose.
   However, the original specification of the URI RRType limits the
   possible values for the service parameters of the Owner name,
   effectively disallowing the DID use case described above.

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