Justin Brickell - PowerPoint PPT Presentation

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Justin Brickell

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Justin Brickell Donald E. Porter Vitaly Shmatikov Emmett Witchel The University of Texas at Austin – PowerPoint PPT presentation

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Title: Justin Brickell


1
Secure Remote Diagnostics
  • Justin Brickell
  • Donald E. Porter
  • Vitaly Shmatikov
  • Emmett Witchel
  • The University of Texas at Austin

2
Error messages are cryptic
What is this and how do I fix it?
3
Troubleshooting is no longer local
I can diagnose this fault online
4
Software diagnostic scenario
? Program faults
? Evaluation
v
T(v)
T
Diagnostic program
? Local state v
? Diagnosis T(v)
Detailed problem description and solution guide
5
Our goal Protect user privacy
  • Program memory
  • File snippets
  • Other running programs
  • Confidential information

If you are concerned that a report might contain
personal or confidential information, you should
not send the report.
Local state v
Problem Users with privacy concerns cannot
participate
6
Talk outline
  • Two unsatisfactory approaches
  • Overview of our approach
  • Building blocks
  • Protocol walkthrough
  • Applications
  • Performance
  • Conclusion

7
User-side evaluation
? Program faults
  • Proprietary ()
  • Reveals vulnerabilities
  • Helps reverse engineer

? Evaluation
T
? Diagnostic
v
T(v)
T
Problem Vendor also has privacy concerns
8
Secure multiparty computation
? Program faults
Circuit to apply T to v
? Evaluation
Description of T
v
T
?
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