fTPM - A Software-Only Implementation of a TPM Chip

fTPM - A Software-Only Implementation of a TPM Chip

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Intro

1 of 24

1 of 24

Intro

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fTPM - A Software-Only Implementation of a TPM Chip

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  1. 1 Intro
  2. 2 Motivation
  3. 3 Big Problem
  4. 4 Research Question
  5. 5 Outline
  6. 6 TPM: 1.0
  7. 7 New in TPM 2.0
  8. 8 ARM TrustZone Properties
  9. 9 ARM TrustZone Limitations
  10. 10 High-Level architecture
  11. 11 Threat Model: What Threats are In-Scope?
  12. 12 ARM Eco-system Offers eMMC
  13. 13 Three Approaches
  14. 14 Problem: Long-Running Commands
  15. 15 Solution: Cooperative Checkpointing
  16. 16 Background: TPM Unseal
  17. 17 Problem: Dark Periods
  18. 18 Possible Attack during Dark Period
  19. 19 Solution: Dirty Bit
  20. 20 Dirty Bit Stops Attack
  21. 21 Methodology
  22. 22 Conclusions
  23. 23 Discussion of SGX Limitations
  24. 24 Questions?

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