ETSI TC ITS WG5 STANDARDIZATION ACTIVITIES ETSI ITS Workshop 2011.
-
Upload
anabel-hutchinson -
Category
Documents
-
view
220 -
download
4
Transcript of ETSI TC ITS WG5 STANDARDIZATION ACTIVITIES ETSI ITS Workshop 2011.
ETSI TC ITS WG5 STANDARDIZATION ACTIVITIES
ETSI ITS Workshop 2011
Purpose and scope of WG5
WG5 exists to provide security standards within the ITS Standards platform• To protect the ITS platform (ITS-S?)
• To protect the ITS infrastructure (RSU and beyond)
• To protect the ITS user
WG5 also exists to provide guidance on the use of security standards to protect the ITS applications
2
Is security necessary?
Yes• Society depends on effective transport and society
needs assurance that it will be free from attack• The scope for manipulation of transport networks
is too extensive to hope it will be able to serve us without security control to prevent ITS serving only the criminal community
• The data gathered from use of ITS is personal data and needs to be protected using Privacy Enhancing Technologies
3
Stakeholders in ITS Security
Society• ITS provides benefit to all of society
Industry• 100s of millions of vehicles, billions of phones, billions
of internet connected devices, billions of people able to move and interact with transport networks
Government• Need to manage ITS as a societal benefit and ensure it
fits to the other government managed societal benefits• Need to ensure global cooperation for ITS
4
Security standardisation aims to protect all the stakeholders
WG5 WORKING METHODSRisk analysis and countermeasure specification
5
Technical domain of ITS Security
ComSec• Giving assurance to the user that data is transferred without being vulnerable
to interception and misrouting
AppSec• Giving assurance to the user that the ITS application works without harming
the user
SysSec• Giving assurance that the ITS system is not harming its environment (or
spreading harm from the environment to its users)
DataSec• Giving assurance that data in the ITS system is accurate, timely, and free from
manipulation
Regulatory compliance• Data protection, privacy protection, export control of algorithms, etc.
6
Working methods in ITS WG5
7
TR 102 893 TS 102 731 ES 202 867
Security analysis (TVRA)
Understanding the user’s communication scenarios: • Correspondents know and trust one another and
the network• Correspondents know and trust one another but
don’t trust the network• Correspondents know but don’t trust one another
but trust the network• Correspondents don’t know one another (V2V)• Communications network is public (V2I)• Communications network is private• Etc.
Overview
Current work• Standard for deploying signed CAM and DENM using
IEEE 1609.2• PKI design to support IEEE 1690.2 and privacy
• Whilst maintaining regulatory compliance
• Minimum standards to support EU Mandates for ITS
Future work• Extension for full communications technology suite• Extension for full applications technology suite• Extension for non-vehicle centric ITS
9
THE REGULATORY AND SOCIETAL DIMENSION
10
Basic concepts in ETSI ITS #1
Access to transport infrastructure is highly regulated and policed• Driver and vehicle licensing• Different roads have different restrictions (vehicle and driver)• Infrastructure is operated both commercially and non-commercially
Transport infrastructure supports many different transport uses• Movement of individuals• Movement of livestock• Movement of dangerous goods• Summarised in many licensing schemes:
• Private, Light goods, Heavy Goods, For hire, Multi-user.
11
Basic concepts in ETSI ITS #2
ITS stations send environmental (event) and (vehicle) status data to other ITS stationsITS stations may exist in vehiclesITS stations may exist in roadside furnitureITS stations may be applets on internet connected devices • Android or Apple Apps for example
ITS stations may be networked togetherInterpretation of received data may assist in driver safety• E.g. Collision avoidance
Interpretation of received data may assist in regulatory compliance• E.g. Speed limit notification and adherence
Different data has different authority• E.g. Speed limit notification from an authority versus speed assertion from an ITS
station
12
Regulatory issues
Deployment regulation• Specific to some of the involved ITS industries
R&TTE directive• Placement of radio equipment on the market
Privacy • Article 12 UDHR: • Article 8 EU Convention for the Protection of Human Rights and
Fundamental Freedoms: Right to respect for private and family life
Data protectionCrypto exportSupport to law enforcement• Data retention and lawful interception
13
Privacy, data protection and security
Assigns rights to citizens on how data related to them is protected• Enshrined in law in Directive 95/46/EC of the European
Parliament and of the Council of 24 October 1995 on the protection of individuals with regard to the processing of personal data and on the free movement of such data
• Supplemented by Directive 2002/58/EC of the European Parliament and of the Council of 12 July 2002 concerning the processing of personal data and the protection of privacy in the electronic communications sector (Directive on privacy and electronic communications)
14
Privacy, data protection and security
Personal data• shall mean any information relating to an identified or identifiable natural person
('data subject'); an identifiable person is one who can be identified, directly or indirectly, in particular by reference to an identification number or to one or more factors specific to his physical, physiological, mental, economic, cultural or social identity
Processing of personal data• shall mean any operation or set of operations which is performed upon personal
data, whether or not by automatic means, such as collection, recording, organization, storage, adaptation or alteration, retrieval, consultation, use, disclosure by transmission, dissemination or otherwise making available, alignment or combination, blocking, erasure or destruction
“data subject’s” consent• shall mean any freely given specific and informed indication of his wishes by
which the data subject signifies his agreement to personal data relating to him being processed
15
Privacy, data protection and security
The means to give assurance of the confidentiality, integrity and availability of data and services• Offers technical and procedural means to support
regulation
Security supports … • Privacy (Privacy Enhancing Technologies)
• COM(2007) 228 final: “COMMUNICATION FROM THE COMMISSION TO THE EUROPEAN PARLIAMENT AND THE COUNCIL on Promoting Data Protection by Privacy Enhancing Technologies (PETs)”
• Data protection16
CURRENT WORK PROGRAMMEAims of WG5 in the year or so to come
17
Main work focus
Keying strategies for ITS• Assuming correspondents don’t know one another• Assuming limited infrastructure access• Assuming minimising of cryptographic load
(number of algorithms, number of mechanisms, number of keys)
• Assuming need to reinforce regulation frameworks• For telecommunications and all other regulations• Minimal development of “novel” security solutions• Maximum re-use of existing best practices
18
Identity and role
All vehicles have identities• Make and model• Colour and specification• VIN• Registration mark
Many identifiers have an authority• VIN = Manufacturer• Registration mark = National vehicle licensing centre
Some vehicles take on special roles• Emergency services
Some vehicles and their roles imply behaviour• Farm Tractor – slow vehicle• Motorbike
19
PKI and Certificates
20
Certificate Authority (CA)• Trustworthy entity: OEM,
government, etc.
Alice
Bob
certificate
What is a certificate: • A signed (by the CA) public key (of Alice or Bob)• A certificate binds an identity (Alice) and/or a role (e.g. emergency
vehicle) to a public key • Certificate(Alice) = [Alice, , SigCA(Alice, )
[ ]
1. Verify certificate
2. Verify message
PKI Design Approach
21
TVRA Countermeasures
Security ServicesStakeholder
Limitations and Interests
PKI Requirements
PKI Design
Design input being gathered
Enrolment Authority: Example
Euro A National Enrolment Authority
European Enrolment
Authority CA
OEM Production Line
Sub-CA
1. Request
2. Enrolment Credential
Euro B National Enrolment Authority
22
CLOSING AND THANKSAnd some acknowledgments
23
Acknowledgements
Members of ETSI TC ITS WG5 and ISO TC204 WG16.7• Including the members of ETSI STF397 and STF408
FP7 project i-TOUR• The chair is supported in part by the i-TOUR
project funded from European Community’s Seventh Framework Programme (FP7/2007-2013) under the Grant Agreement number 234239.
24
BACK UP SLIDES (PKI OPTIONS)If really really needed and if time is available
25
Enrolment Authority: Example
Euro A National Enrolment Authority
European Enrolment
Authority CA
OEM Production Line
Sub-CA
1. Request
2. Enrolment Credential
Euro B National Enrolment Authority
OEM 1 Enrolment Authority
OEM 2 Enrolment Authority
Sub-CA
Can this level be omitted?
26
Safety Ticket Authority: Examples
European Safety Ticket Authority CA
European Safety Ticket Authority CA
Euro A National Safety Ticket
Authority
Sub-CA
Euro B National Safety Ticket
Authority
1
2
27
Commercial and Information Ticket Authority: Example
Root authority certifies provider authorities (need to satisfy minimum requirements).
Then basically any structure is allowed• OEMs offering
services• 3rd party service
providers• Government agencies• etc.
European Commercial and Information Ticket Authority
OEM 1 Ticket Authority
Tier 1 Ticket Authority
Euro A Ticket Authority
Sub-CA
Sub-CA
Could include another country-level CA
28