Opportunistic Wireless Encryption
draft-harkins-owe-03

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Network Working Group                                    D. Harkins, Ed.
Internet-Draft                                             HP Enterprise
Intended status: Informational                            W. Kumari, Ed.
Expires: February 24, 2017                                        Google
                                                         August 23, 2016

                   Opportunistic Wireless Encryption
                          draft-harkins-owe-03

Abstract

   This memo specifies an extension to IEEE Std 802.11 to provide for
   opportunistic (unauthenticated) encryption to the wireless media.

   [ Ed note: Text inside square brackets ([]) is additional background
   information, answers to frequently asked questions, general musings,
   etc.  They will be removed before publication.  This document is
   being collaborated on in Github at: https://github.com/wkumari/draft-
   harkins-owe.  The authors (gratefully) accept pull requests. ]

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 http://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 February 24, 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

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   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
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
     1.2.  Notation  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.3.  Why IETF? . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  802.11 Network Access . . . . . . . . . . . . . . . . . . . .   4
   4.  Opportunistic Wireless Encryption . . . . . . . . . . . . . .   5
     4.1.  Cryptography  . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  OWE Discovery . . . . . . . . . . . . . . . . . . . . . .   6
     4.3.  OWE Association . . . . . . . . . . . . . . . . . . . . .   6
     4.4.  OWE Post-Association  . . . . . . . . . . . . . . . . . .   8
     4.5.  OWE PMK Caching . . . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   6.  Implementation Considerations . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Appendix A.  Changes / Author Notes.  . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This memo describes a mode of opportunistic encryption [RFC7435] for
   802.11 -- OWE -- that provides encryption of the wireless medium but
   no authentication.

1.1.  Requirements Language

   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 RFC 2119 [RFC2119].

1.2.  Notation

   This memo uses the following notation:

   y = F(X)  an element-to-scalar mapping function.  For an elliptic
       curve group, it takes a point on the curve and returns the
       x-coordinate; for a finite field element it is the identity
       function, just returning the element itself.

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   Z = DH(x,Y)
       for an elliptic curve DH(x,Y) is the multiplication of point Y by