Internationalization Updates to RFC 5280
draft-ietf-lamps-rfc5280-i18n-update-04

Document Type Active Internet-Draft (lamps WG)
Last updated 2017-11-12 (latest revision 2017-10-12)
Replaces draft-housley-rfc5280-i18n-update
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Document shepherd Phillip Hallam-Baker
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Responsible AD Eric Rescorla
Send notices to Phillip Hallam-Baker <phill@hallambaker.com>, Russ Housley <housley@vigilsec.com>
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INTERNET-DRAFT
Internet Engineering Task Force                               R. Housley
Intended Status: Proposed Standard                        Vigil Security
Updates: 5280 (once approved)
Expires: 12 April 2018                                   12 October 2017

                Internationalization Updates to RFC 5280
                draft-ietf-lamps-rfc5280-i18n-update-04

Abstract

   These updates to RFC 5280 provide alignment with the 2008
   specification for Internationalized Domain Names (IDNs) and add
   support for Internationalized Email Addresses in X.509 Certificates.

Status of this Memo

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   provisions of BCP 78 and BCP 79.

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Copyright and License Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors. All rights reserved.

Housley                   Expires 12 April 2018                 [Page 1]
INTERNET-DRAFT          I18n Updates to RFC 5280            October 2017

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://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
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
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   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
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   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

1.  Introduction

   This document updates RFC 5280 [RFC5280].  The Introduction in
   Section 1, the Name Constraints certificate extension discussion in
   Section 4.2.1.10, and the Processing Rules for Internationalized
   Names in Section 7 are updated to provide alignment with the 2008
   specification for Internationalized Domain Names (IDNs) and add
   support for Internationalized Email Addresses in X.509 Certificates.

   An IDN in Unicode (native character) form contains at least one
   U-label [RFC5890].  With one exception, IDNs are carried in
   certificates in ACE-encoded form.  That is, all U-labels within an
   IDN are converted to A-labels.  Conversion of an U-label to an
   A-label is described in [RFC5891].

   The GeneralName structure supports many different names forms,
   including otherName for extensibility.  [ID.lamps-eai-addresses]
   specifies the SmtpUTF8Mailbox for Internationalized Email addresses,
   which include IDNs with U-labels.

   Note that Internationalized Domain Names in Applications
   specifications published in 2003 (IDNA2003) [RFC3490] and 2008
   (IDNA2008) [RFC5890] both refer to the Punycode Algorithm for
   conversion [RFC3492].

Housley                   Expires 12 April 2018                 [Page 2]
INTERNET-DRAFT          I18n Updates to RFC 5280            October 2017

1.1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.
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