Secure Multiparty Computation of Threshold Signatures Made More Efficient
Harry W. H. Wong
Network and Distributed System Security (NDSS) Symposium 2024 · Day 2 · Blockchain Security
This article delves into Harry W. H. Wong's presentation on enhancing the efficiency of secure multiparty computation (SMC) for **threshold signatures**, a critical cryptographic primitive for securing decentralized applications. The talk introduces novel protocols designed to address long-standing challenges in existing threshold signature schemes, particularly for **ECDSA** and **BBS+ signatures**. These challenges include the necessity for fixed "roll call" groups, a lack of robustness against participant failures, inadequate public verifiability and fault recovery mechanisms, and overall inefficiency due to high communication overhead.