🪑 Session chair: Akira (Duties: Read material above-average carefully 🤓; prepare fallback discussions/questions (worst-case: just prepare some quiz questions about the material) 🙋. Prepare a few slides to guide the session through subtopics (this is not supposed to be a detailed summary of the material)
🎯 Goals
- Good overview of the situation
- what is the issue?
- how much of it can be generically remedied?
- what are other strategies to deal with multi-round loss?
📚 Material
- AFK23: main reference
Extensions
(if we have time)
📝 Notes
Sept 18
- Discussion about sanity check: sequential repetition of small-challenge-space protocols (e.g., some traditional Cut-and-Choose protocols)
- Interactively, sequential repetition works for extraction.
- With Fiat-Shamir, sequential repetition does not amplify security at all (can grind challenges).
- Question: How is that reflected in AFK23’s Theorem 2?
- Answer: The soundness/knowledge error gets very bad very quickly when increasing the number of rounds