Internationalized Email Addresses in X.509 certificates
draft-ietf-lamps-eai-addresses-15

Document Type Active Internet-Draft (lamps WG)
Last updated 2017-11-12 (latest revision 2017-09-12)
Replaces draft-melnikov-spasm-eai-addresses
Stream IETF
Intended RFC status Proposed Standard
Formats plain text xml pdf html bibtex
Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2016 - WG adoption of a dra... )
On Agenda lamps at IETF-100
Document shepherd Russ Housley
Shepherd write-up Show (last changed 2016-12-27)
IESG IESG state IESG Evaluation
Consensus Boilerplate Yes
Telechat date On agenda of 2018-01-11 IESG telechat
Needs 9 more YES or NO OBJECTION positions to pass.
Responsible AD Eric Rescorla
Send notices to "Russ Housley" <housley@vigilsec.com>
IANA IANA review state IANA OK - Actions Needed
IANA action state None
LAMPS                                                   A. Melnikov, Ed.
Internet-Draft                                                 Isode Ltd
Intended status: Standards Track                          W. Chuang, Ed.
Expires: March 16, 2018                                     Google, Inc.
                                                      September 12, 2017

        Internationalized Email Addresses in X.509 certificates
                   draft-ietf-lamps-eai-addresses-15

Abstract

   This document defines a new name form for inclusion in the otherName
   field of an X.509 Subject Alternative Name and Issuer Alternative
   Name extension that allows a certificate subject to be associated
   with an Internationalized Email Address.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 16, 2018.

Copyright Notice

   Copyright (c) 2017 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.

Melnikov & Chuang        Expires March 16, 2018                 [Page 1]
Internet-Draft  I18N Mail Addresses in X.509 certificates September 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   2
   3.  Name Definitions  . . . . . . . . . . . . . . . . . . . . . .   2
   4.  IDNA2008  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Matching of Internationalized Email Addresses in X.509
       certificates  . . . . . . . . . . . . . . . . . . . . . . . .   4
   6.  Name constraints in path validation . . . . . . . . . . . . .   5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Appendix A.  ASN.1 Module . . . . . . . . . . . . . . . . . . . .   9
   Appendix B.  Example of SmtpUTF8Mailbox . . . . . . . . . . . . .  10
   Appendix C.  Acknowledgements . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   [RFC5280] defines the rfc822Name subjectAltName name type for
   representing [RFC5321] email addresses.  The syntax of rfc822Name is
   restricted to a subset of US-ASCII characters and thus can't be used
   to represent Internationalized Email addresses [RFC6531].  This
   document defines a new otherName variant to represent
   Internationalized Email addresses.  In addition this document
   requires all email address domains in X.509 certificates to conform
   to IDNA2008 [RFC5890].

2.  Conventions Used in This Document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   The formal syntax uses the Augmented Backus-Naur Form (ABNF)
   [RFC5234] notation.

3.  Name Definitions

   The GeneralName structure is defined in [RFC5280], and supports many
   different name forms including otherName for extensibility.  This
   section specifies the SmtpUTF8Mailbox name form of otherName, so that
   Internationalized Email addresses can appear in the subjectAltName of
   a certificate, the issuerAltName of a certificate, or anywhere else
Show full document text