Improving the Public Key Infrastructure (PKI) for the World Wide Web
draft-iab-web-pki-problems-05

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Last updated 2016-10-31
Replaces draft-housley-web-pki-problems
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Internet Architecture Board                                   R. Housley
Internet-Draft                                            Vigil Security
Intended status: Informational                             K. O'Donoghue
Expires: May 4, 2017                                    Internet Society
                                                        October 31, 2016

  Improving the Public Key Infrastructure (PKI) for the World Wide Web
                     draft-iab-web-pki-problems-05

Abstract

   The Public Key Infrastructure (PKI) used for the World Wide Web (Web
   PKI) is a vital component of trust in the Internet.  In recent years,
   there have been a number of improvements made to this infrastructure,
   including improved certificate status checking, automation, and
   transparency of governance.  However, additional improvements are
   necessary.  This document identifies continuing areas of concern and
   provides recommendations to the Internet community for additional
   improvements, moving toward a more robust and secure Web PKI.

Status of This Memo

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   This Internet-Draft will expire on May 4, 2017.

Copyright Notice

   Copyright (c) 2016 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
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   carefully, as they describe your rights and restrictions with respect

Housley & O'Donoghue       Expires May 4, 2017                  [Page 1]
Internet-Draft              Web PKI Problems                October 2016

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  A Brief Description of the Web PKI  . . . . . . . . . . . . .   3
   3.  Improvements to the Web PKI . . . . . . . . . . . . . . . . .   4
     3.1.  Strong Cryptography . . . . . . . . . . . . . . . . . . .   4
       3.1.1.  Preparing for Quantum Computers . . . . . . . . . . .   4
       3.1.2.  Avoiding Weak Cryptography  . . . . . . . . . . . . .   5
     3.2.  Support for Enterprise PKIs . . . . . . . . . . . . . . .   6
     3.3.  Web PKI in the Home . . . . . . . . . . . . . . . . . . .   8
     3.4.  Governance Improvements to the Web PKI  . . . . . . . . .  10
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   5.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  12
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   7.  Informative References  . . . . . . . . . . . . . . . . . . .  13
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  15
   Appendix B.  IAB Members at the Time of Approval  . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   The Public Key Infrastructure (PKI) for the World Wide Web (Web PKI)
   has evolved into a key component of the global Internet; it enables
   trusted business and individual transactions.  This global
   infrastructure has been growing and evolving for many years.  The
   success of Web PKI has contributed to significant Internet growth.
   The Web PKI impacts all aspects of our lives, and no one can imagine
   the web without the protections that the Web PKI enables.

   As with any maturing technology, there are several problems with the
   current Web PKI.  The Web PKI makes use of certificates as described
   in RFC 5280 [RFC5280].  These certificates are primarily used with
   Transport Layer Security (TLS) as described in RFC 5246 [RFC5246].

   The economics of the Web PKI value chain are discussed in [VFBH],
   [AV], and [AVAV].  This document does not investigate the economic
   issues further, but these economic issues provide motivation for
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