OWE
draft-harkins-owe-00
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Dan Harkins
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Warren Kumari
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2016-07-18
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capport D. Harkins, Ed.
Internet-Draft HP Enterprise
Intended status: Informational W. Kumari, Ed.
Expires: January 19, 2017 Google
July 18, 2016
OWE
draft-harkins-owe-00
Abstract
This memo specifies an extension to IEEE Std 802.11 to provide for
opportunistic (unauthenticated) encryption to the wireless media.
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 January 19, 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
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.
Harkins & Kumari Expires January 19, 2017 [Page 1]
Internet-Draft Abbreviated Title July 2016
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2
1.2. Notation . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Background . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. 802.11 Network Access . . . . . . . . . . . . . . . . . . . . 3
4. Opportunistic Wireless Encryption . . . . . . . . . . . . . . 4
4.1. Cryptography . . . . . . . . . . . . . . . . . . . . . . 4
4.2. OWE Discovery . . . . . . . . . . . . . . . . . . . . . . 5
4.3. OWE Association . . . . . . . . . . . . . . . . . . . . . 5
4.4. OWE Post-Association . . . . . . . . . . . . . . . . . . 7
4.5. OWE PMK Caching . . . . . . . . . . . . . . . . . . . . . 7
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
6. Implementation Considerations . . . . . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . 8
8. Normative References . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
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.
Z = DH(x,Y)
for an elliptic curve DH(x,Y) is the multiplication of point Y by
the scalar value x creating a point on the curve Z; for finite
field cryptography DH(x,Y) is expontiation of element Y to the
power of x (implied modulo a field defining prime, p) resulting
in an element Z.
Harkins & Kumari Expires January 19, 2017 [Page 2]
Internet-Draft Abbreviated Title July 2016
a = len(b)
indicates the length in bits of the string b.
2. Background
Many businesses-- bars, coffee shops, etc.-- offer free Wi-Fi as an
inducement to customers to enter and remain in the premises. Many
customers will use the availability of free Wi-Fi as a deciding
factor in which business to patronize. Since these businesses are
not Internet service providers, they are not willing and/or not
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