Bandwidth-Efficient Threshold EC-DSA

YouTube·Conference Talks

Explore a bandwidth-efficient threshold EC-DSA protocol presented at PKC 2020. Delve into the motivation behind distributed ECDSA and the challenges in the signing algorithm. Examine previous works, including the full threshold ECDSA-GG from CCS'18, and learn about removing range proofs. Understand the CL framework and its instantiation in class groups of imaginary quadratic fields. Study the interactive setup, key generation, and multi-phase signing process. Compare this protocol with the Gennaro Goldfeder protocol, focusing on improvements in Phase 1 and the ZKAOK. Analyze computational assumptions for soundness and evaluate the efficiency of the full threshold protocol.