PKIX over Secure HTTP (POSH)
RFC 7711

Document Type RFC - Proposed Standard (November 2015; No errata)
Last updated 2015-11-19
Replaces draft-miller-posh
Stream IETF
Formats plain text pdf html bibtex
Stream WG state Submitted to IESG for Publication
Document shepherd Dave Cridland
Shepherd write-up Show (last changed 2015-06-01)
IESG IESG state RFC 7711 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Ben Campbell
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                         M. Miller
Request for Comments: 7711                           Cisco Systems, Inc.
Category: Standards Track                                 P. Saint-Andre
ISSN: 2070-1721                                                     &yet
                                                           November 2015

                      PKIX over Secure HTTP (POSH)

Abstract

   Experience has shown that it is difficult to deploy proper PKIX
   certificates for Transport Layer Security (TLS) in multi-tenanted
   environments.  As a result, domains hosted in such environments often
   deploy applications using certificates that identify the hosting
   service, not the hosted domain.  Such deployments force end users and
   peer services to accept a certificate with an improper identifier,
   resulting in degraded security.  This document defines methods that
   make it easier to deploy certificates for proper server identity
   checking in non-HTTP application protocols.  Although these methods
   were developed for use in the Extensible Messaging and Presence
   Protocol (XMPP) as a Domain Name Association (DNA) prooftype, they
   might also be usable in other non-HTTP application protocols.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7711.

Miller & Saint-Andre         Standards Track                    [Page 1]
RFC 7711                          POSH                     November 2015

Copyright Notice

   Copyright (c) 2015 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
   (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
   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.

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................4
   3. Obtaining Verification Material .................................5
      3.1. Source Domain Possesses PKIX Certificate Information .......6
      3.2. Source Domain References PKIX Certificate ..................8
      3.3. Performing Verification ....................................9
   4. Secure Delegation ...............................................9
   5. Order of Operations ............................................10
   6. Caching Results ................................................11
   7. Guidance for Server Operators ..................................12
   8. Guidance for Protocol Authors ..................................12
   9. IANA Considerations ............................................13
      9.1. Well-Known URI ............................................13
      9.2. POSH Service Names ........................................13
   10. Security Considerations .......................................14
   11. References ....................................................15
      11.1. Normative References .....................................15
      11.2. Informative References ...................................16
   Acknowledgements ..................................................18
   Authors' Addresses ................................................18

Miller & Saint-Andre         Standards Track                    [Page 2]
RFC 7711                          POSH                     November 2015

1.  Introduction

   We begin with a thought experiment.

   Imagine that you work on the operations team of a hosting company
   that provides instances of the hypothetical "Secure Protocol for
   Internet Content Exchange" (SPICE) service for ten thousand different
   customer organizations.  Each customer wants their instance to be
   identified by the customer's domain name (e.g., bar.example.com), not
   the hosting company's domain name (e.g., hosting.example.net).
Show full document text