Towards an Open Approach to Secure Cryptographic Implementations

Towards an Open Approach to Secure Cryptographic Implementations

TheIACR via YouTube Direct link

Ciphertext Integrity with Leakage

19 of 32

19 of 32

Ciphertext Integrity with Leakage

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Towards an Open Approach to Secure Cryptographic Implementations

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  1. 1 Intro
  2. 2 Transparency (as a measure of maturity)
  3. 3 Acknowledgments & cautionary note
  4. 4 AES Rijndael: y = AES (x)
  5. 5 Leakage function definition
  6. 6 Basic facts (0)
  7. 7 Consequence (for theoretical analysis)
  8. 8 Basic facts (1)
  9. 9 Summarizing (taxonomy of attacks)
  10. 10 Outline
  11. 11 Noise (hardware) is not enough
  12. 12 Masking (= noise amplification)
  13. 13 Masking (abstract view)
  14. 14 Masking (concrete view)
  15. 15 Masking (reduction)
  16. 16 Statistical intuition (2 shares)
  17. 17 Case study: ARM Cortex M4 [JS17]
  18. 18 Authenticated Encryption (AEAD)
  19. 19 Ciphertext Integrity with Leakage
  20. 20 Chosen Ciphertext Security
  21. 21 CCA Security with Leakage [GPPS18]
  22. 22 The challenge leakage controversy (0)
  23. 23 An motivating example
  24. 24 Seed: a leakage-resilient MAC
  25. 25 First tweak: LR tag verification
  26. 26 Engineering approach to CCAL security
  27. 27 A CCAML2 encryption scheme
  28. 28 Security reductions (simplified)
  29. 29 Example of full-fledged scheme
  30. 30 A theory to guide practice?
  31. 31 Open problems
  32. 32 Evaluation challenge

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