will your car betray you
DESCRIPTION
Slides from Baythreat talkTRANSCRIPT
![Page 1: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/1.jpg)
Will Your Car Betray You?Implications of proposed connected vehicle
technology on privacy
![Page 2: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/2.jpg)
whoami
• BSEE, digital communications
• Too many years as a network engineer
• Santa Clara University Law student
• Research assistant providing technical expertise on privacy audits and reviews
• Contracted by auto consortium to review privacy of proposed vehicle to vehicle safety network
![Page 3: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/3.jpg)
Standard Disclaimer
IANAL (Yet!)
Not that it matters anyway.
![Page 4: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/4.jpg)
Non-Standard Disclaimer
A current NDA covers some of my work here.
Focus on published information and standards.
![Page 5: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/5.jpg)
Dedicated Short Range Communicationsa safety network transmitting vehicle trajectory and function
Alerting inattentive drivers will save lives!
![Page 6: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/6.jpg)
Challenges of DSRC
• Density
• Integrity
The National Highway Transportation Safety Board is considering a mandate to achieve these.
Auto manufacturers are on board with this
![Page 7: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/7.jpg)
What DSRC Is
• IEEE 802.11p radio communications
• IEEE 1609
• Basic Safety Message API-like interface
• Data glob is a series of values for defined fields
• Only BSM interface to be presented to vehicle
![Page 8: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/8.jpg)
What DSRC Is Not
• Connected to CAN bus OnStar or any other existing network
• Routed* (a “proper” network)
• Commercial
![Page 9: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/9.jpg)
Basic Safety Message Fields
• Position and positional accuracy
• Transmission, speed, detailed acceleration data
• Braking status, including stability control
• Path history and prediction
• Event flags
![Page 10: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/10.jpg)
BSM Format
What’s missing?
Addressing.
Open sourcing apps that access this interface does not matter.
![Page 11: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/11.jpg)
Trust the radio?
• “Why shouldn’t you?”
![Page 12: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/12.jpg)
about these certificates...
• Still haven’t nailed this down.
• Vehicle maintains a store of certificates
• Periodically changed
• Proposals for update period/method still being debated
• This includes updates for revoked
![Page 13: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/13.jpg)
Where do Certificates come from?
• Double-key system to isolate device ID from request location.
• Can device IDs be correlated to people?
• Who issues these certificates?
• How does DSRC device request/receive certificates.
![Page 14: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/14.jpg)
“Back-end interface”
• This also has not been decided
• Without infrastructure, models such as cellular, wifi how do you connect?
![Page 15: Will Your Car Betray you](https://reader036.vdocuments.us/reader036/viewer/2022081413/548d7401b47959ac488b4713/html5/thumbnails/15.jpg)
Worrisome Development efforts
• Commercial apps that ride on top of DSRC network
• Integration with public transit systems
• Fixed infrastructure