How to use FROST (incl. Demo)
summary
FROST is a two‑round threshold Schnorr scheme adapted for Zcash with re-randomized FROST to hide signing keys on‑chain; code is released as crates on crates.io and passed an audit. It supports trusted‑dealer or distributed key generation, share recovery, share refresh, and common thresholds like 2‑of‑3 or 3‑of‑5. Wallet integration requires encrypted authenticated messaging and a small API change for deriving ASK from a FROST group key. A live demo builds a signing flow but the onstage demo fails to broadcast due to connectivity, not crypto.
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chapters (18)
- 0:00FROST introduction
- 1:24Threshold signatures and FROST
- 3:58FROST standardization updates
- 6:06Re-randomized FROST for Zcash
- 7:08FROST use cases
- 9:39FROST high-level overview
- 12:10FROST with Zcash transactions
- 13:55Key trees and FROST integration
- 16:04FROST share backup
- 17:53FROST communication challenges
- 19:38FROST with wallet software
- 21:49Wallet support user stories
- 24:22FROST status and next steps
- 25:26Live FROST demo
- 28:30Q&A: Favorite FROST use cases
- 29:12Q&A: FROST beyond crypto
- 29:54Q&A: FROST limitations
- 30:56Q&A: Running FROST demo
