Geolocation Policy: A Document Format for Expressing Privacy Preferences for Location Information
RFC 6772
Internet Engineering Task Force (IETF) H. Schulzrinne, Ed.
Request for Comments: 6772 Columbia University
Category: Standards Track H. Tschofenig, Ed.
ISSN: 2070-1721 Nokia Siemens Networks
J. Cuellar
Siemens
J. Polk
Cisco
J. Morris
M. Thomson
Microsoft
January 2013
Geolocation Policy: A Document Format for
Expressing Privacy Preferences for Location Information
Abstract
This document defines an authorization policy language for
controlling access to location information. It extends the Common
Policy authorization framework to provide location-specific access
control. More specifically, this document defines condition elements
specific to location information in order to restrict access to data
based on the current location of the Target.
Furthermore, this document defines two algorithms for reducing the
granularity of returned location information. The first algorithm is
defined for usage with civic location information, whereas the other
one applies to geodetic location information. Both algorithms come
with limitations. There are circumstances where the amount of
location obfuscation provided is less than what is desired. These
algorithms might not be appropriate for all application domains.
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/rfc6772.
Schulzrinne, et al. Standards Track [Page 1]
RFC 6772 Geolocation Policy January 2013
Copyright Notice
Copyright (c) 2013 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
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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.
Schulzrinne, et al. Standards Track [Page 2]
RFC 6772 Geolocation Policy January 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Generic Processing . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Structure of Geolocation Authorization Documents . . . . . 7
3.2. Rule Transport . . . . . . . . . . . . . . . . . . . . . . 7
4. Location-Specific Conditions . . . . . . . . . . . . . . . . . 7
4.1. Geodetic Location Condition Profile . . . . . . . . . . . 8
4.2. Civic Location Condition Profile . . . . . . . . . . . . . 9
5. Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6. Transformations . . . . . . . . . . . . . . . . . . . . . . . 9
6.1. Set Retransmission-Allowed . . . . . . . . . . . . . . . . 9
6.2. Set Retention-Expiry . . . . . . . . . . . . . . . . . . . 10
6.3. Set Note-Well . . . . . . . . . . . . . . . . . . . . . . 10
6.4. Keep Ruleset Reference . . . . . . . . . . . . . . . . . . 10
6.5. Provide Location . . . . . . . . . . . . . . . . . . . . . 11
6.5.1. Civic Location Profile . . . . . . . . . . . . . . . . 12
6.5.2. Geodetic Location Profile . . . . . . . . . . . . . . 13
7. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.1. Rule Example with Civic Location Condition . . . . . . . . 15
7.2. Rule Example with Geodetic Location Condition . . . . . . 16
7.3. Rule Example with Civic and Geodetic Location Condition . 17
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