International Association for Cryptologic Research

International Association
for Cryptologic Research


Snarky Ceremonies

Janno Siim , University of Tartu, Estonia
Markulf Kohlweiss , University of Edinburgh, UK and IOHK, UK
Mikhail Volkhov , University of Edinburgh, UK
Mary Maller , Ethereum Foundation
DOI: 10.1007/978-3-030-92078-4_4
Search ePrint
Search Google
Conference: ASIACRYPT 2021
Abstract: Succinct non-interactive arguments of knowledge (SNARKs) have found numerous applications in the blockchain setting and elsewhere. The most efficient SNARKs require a distributed ceremony protocol to generate public parameters, also known as a structured reference string (SRS). Our contributions are two-fold: \begin{compactitem} \item We give a security framework for non-interactive zero-knowledge arguments with a ceremony protocol. \item We revisit the ceremony protocol of Groth's SNARK [Bowe et al., 2017]. We show that the original construction can be simplified and optimized, and then prove its security in our new framework. Importantly, our construction avoids the random beacon model used in the original work. \end{compactitem}
Video from ASIACRYPT 2021
  title={Snarky Ceremonies},
  author={Janno Siim and Markulf Kohlweiss and Mikhail Volkhov and Mary Maller},