Out of Band Authentication in Group Messaging - Computational, Statistical, Optimal

Out of Band Authentication in Group Messaging - Computational, Statistical, Optimal

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The Naïve Protocol

9 of 15

9 of 15

The Naïve Protocol

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Out of Band Authentication in Group Messaging - Computational, Statistical, Optimal

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  1. 1 Intro
  2. 2 Major Effort: E2E-Encrypted Messaging
  3. 3 Man-in-the-Middle Attacks
  4. 4 The User-to-User Setting
  5. 5 User-to-User Bounds
  6. 6 This Talk: The Group Setting
  7. 7 Our Contributions
  8. 8 Correctness & Security
  9. 9 The Naïve Protocol
  10. 10 Our Computationally-Secure Protocol
  11. 11 Example: One Possible Attack
  12. 12 Concurrent Non-Malleable Commitments
  13. 13 Our Statistical Lower Bound
  14. 14 Protocol Structure
  15. 15 Understanding H(E)

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