Compact Zero-Knowledge Proofs for Threshold ECDSA with Trustless Setup

Published in 24th International Conference on Practice and Theory of Public-Key Cryptography (PKC 2021), Virtual, 2021

Recommended citation: Tsz Hon Yuen, Handong Cui, and Xiang Xie. “Compact Zero-Knowledge Proofs for Threshold ECDSA with Trustless Setup.” In Public-Key Cryptography – PKC 2021, Lecture Notes in Computer Science, vol. 12710, pp. 481–511, 2021. https://doi.org/10.1007/978-3-030-75245-3_18

This paper presents compact zero-knowledge proofs for threshold ECDSA based on Castagnos–Laguillaumie encryption. The constructions reduce bandwidth and computation costs in key generation and signing while retaining a trustless setup.