No One Holds the Key: Threshold ECDSA, Part 1

This story was originally published on HackerNoon at: https://hackernoon.com/no-one-holds-the-key-threshold-ecdsa-part-1. A deep dive to threshold elliptic curve digital signature algorithm (ECDSA) and its building blocks: oblivious transfer, MtA, OT-based protocol. Check more stories related to data-science at: https://hackernoon.com/c/data-science. You can also check exclusive content about #multi-party-computation, #ecdsa, #oblivious-transfer, #cryptography, #distributed-key-generation, #elliptic-curve-cryptography, #crypto, #hackernoon-top-story, and more. This story was written by: @privatekeypirate. Learn more about this writer by checking @privatekeypirate's about page, and for more stories, please visit hackernoon.com. Threshold ECDSA lets t-of-n parties produce a standard ECDSA signature without anyone ever holding the full private key. Part 1 covers ECDSA basics and nonce pitfalls, commitment-based DKG that blocks rogue-key attacks, the history of threshold ECDSA, the HLNR18 protocol’s trade-offs, and OT-based multiplication.