Threshold ECDSA from ECDSA Assumptions - The Multiparty Case

Explore a groundbreaking conference talk on extending threshold ECDSA protocols to support arbitrary thresholds. Delve into the innovative approach that improves upon previous works by requiring only the Computational Diffie-Hellman assumption in the Random Oracle model. Discover how this new scheme achieves a logarithmic round count, outperforming constant-round protocols in practical scenarios. Learn about the novel consistency check mechanism and optimized two-party multiplication protocol that contribute to the scheme's efficiency. Examine the implementation results across various settings, including groups of co-located and geographically-distributed parties, as well as embedded devices. Gain insights into the protocol's superior performance in LAN environments and its practical applicability on smartphones and hardware tokens.

Threshold ECDSA from ECDSA Assumptions: The Multiparty Case