Geneva, November 11, 2020
This research article reviews the state-of-the-art methods for multi-party quorum-based signature, or threshold signature in cryptographic terms. We describe their core mathematical component using a unified framework called the "arithmetic black-box", and review eight of the most recent and efficient protocols proposed to compute ECDSA signatures (as used in Bitcoin and Ethereum). It is the first article to describe in depth modern threshold signatures methods and to review the known protocols from a practical perspective in terms of security and performance. This is a joint work with the company ZenGo.
Have a read here.