Trustworthy Location
RFC 7378
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Type |
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RFC - Informational
(December 2014; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-tschofenig-ecrit-trustworthy-location
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Stream |
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IETF
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plain text
pdf
html
bibtex
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Roger Marshall
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Shepherd write-up |
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Show
(last changed 2014-02-03)
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| IESG |
IESG state |
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RFC 7378 (Informational)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Alissa Cooper
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IC
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Internet Engineering Task Force (IETF) H. Tschofenig
Request for Comments: 7378 Independent
Category: Informational H. Schulzrinne
ISSN: 2070-1721 Columbia University
B. Aboba, Ed.
Microsoft Corporation
December 2014
Trustworthy Location
Abstract
The trustworthiness of location information is critically important
for some location-based applications, such as emergency calling or
roadside assistance.
This document describes threats to conveying location, particularly
for emergency calls, and describes techniques that improve the
reliability and security of location information. It also provides
guidelines for assessing the trustworthiness of location information.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see 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/rfc7378.
Tschofenig, et al. Informational [Page 1]
RFC 7378 Trustworthy Location December 2014
Copyright Notice
Copyright (c) 2014 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
1.1. Terminology ................................................3
1.2. Emergency Services Architecture ............................5
2. Threat Models ...................................................8
2.1. Existing Work ..............................................8
2.2. Adversary Model ............................................9
2.3. Location Spoofing .........................................10
2.4. Identity Spoofing .........................................11
3. Mitigation Techniques ..........................................11
3.1. Signed Location-by-Value ..................................12
3.2. Location-by-Reference .....................................15
3.3. Proxy-Added Location ......................................18
4. Location Trust Assessment ......................................20
5. Security Considerations ........................................23
6. Privacy Considerations .........................................24
7. Informative References .........................................26
Acknowledgments ...................................................30
Authors' Addresses ................................................30
Tschofenig, et al. Informational [Page 2]
RFC 7378 Trustworthy Location December 2014
1. Introduction
Several public and commercial services need location information to
operate. This includes emergency services (such as fire, ambulance,
and police) as well as commercial services such as food delivery and
roadside assistance.
For circuit-switched calls from landlines, as well as for Voice over
IP (VoIP) services that only support emergency service calls from
stationary Devices, location provided to the Public Safety Answering
Point (PSAP) is determined from a lookup using the calling telephone
number. As a result, for landlines or stationary VoIP, spoofing of
caller identification can result in the PSAP incorrectly determining
the caller's location. Problems relating to calling party number and
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