[2212.10324] Distributed Key Generation with Smart Contracts using zk-SNARKs
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Computer Science > Cryptography and Security

arXiv:2212.10324 (cs)
[Submitted on 20 Dec 2022]

Title:Distributed Key Generation with Smart Contracts using zk-SNARKs

Authors:Michael Sober, Max Kobelt, Giulia Scaffino, Dominik Kaaser, Stefan Schulte
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Abstract:Distributed Key Generation (DKG) is an extensively researched topic as it is fundamental to threshold cryptosystems. Emerging technologies such as blockchains benefit massively from applying threshold cryptography in consensus protocols, randomness beacons, and threshold signatures. However, blockchains and smart contracts also enable further improvements of DKG protocols by providing a decentralized computation and communication platform.
For that reason, we propose a DKG protocol that uses smart contracts to ensure the correct execution of the protocol, allow dynamic participation, and provide crypto-economic incentives to encourage honest behavior. The DKG protocol uses a dispute and key derivation mechanism based on Zero-Knowledge Succinct Non-interactive Arguments of Knowledge (zk-SNARKs) to reduce the costs of applying smart contracts by moving the computations off-chain, where the smart contract only verifies the correctness of the computation.
Subjects: Cryptography and Security (cs.CR); Distributed, Parallel, and Cluster Computing (cs.DC)
Cite as: arXiv:2212.10324 [cs.CR]
  (or arXiv:2212.10324v1 [cs.CR] for this version)
  https://doi.org/10.48550/arXiv.2212.10324
Journal reference: The 38th ACM/SIGAPP Symposium on Applied Computing (SAC '23), March 27-31, 2023, Tallinn, Estonia
Related DOI: https://doi.org/10.1145/3555776.3577677

Submission history

From: Michael Sober [view email]
[v1] Tue, 20 Dec 2022 15:15:55 UTC (290 KB)
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