Publication Type
Conference Proceeding Article
Version
acceptedVersion
Publication Date
2-2025
Abstract
Zero-knowledge Succinct Non-interactive Argument of Knowledge (zkSNARK) is a powerful cryptographic primitive, in which a prover convinces a verifier that a given statement is true without leaking any additional information. However, existing zkSNARKs suffer from high computation overhead in the proof generation. This limits the applications of zkSNARKs, such as private payments, private smart contracts, and anonymous credentials. Private delegation has become a prominent way to accelerate proof generation. In this work, we propose Siniel, an efficient private delegation framework for zkSNARKs constructed from polynomial interactive oracle proof (PIOP) and polynomial commitment scheme (PCS). Our protocol allows a computationally limited prover (a.k.a. delegator) to delegate its expensive prover computation to several workers without leaking any information about the private witness. Most importantly, compared with the recent work EOS (USENIX'23), the state-of-the-art zkSNARK prover delegation framework, a prover in Siniel needs not to engage in the MPC protocol after sending its shares of private witness. This means that a Siniel prover can outsource the entire computation to the workers. We compare Siniel with EOS and show significant performance advantages of the former. The experimental results show that, under low bandwidth conditions (10MBps), Siniel saves about 16% time for delegators than that of EOS, whereas under high bandwidth conditions (1000MBps), Siniel saves about 80% than EOS.
Keywords
Zero-knowledge Proofs, Secure Multiparty Computation, Private, Delegation
Discipline
Information Security
Areas of Excellence
Digital transformation
Publication
Proceedings of the Network and Distributed System Security Symposium (NDSS 2025), San Diego, CA, USA, February 24-28
First Page
1
Last Page
30
City or Country
San Diego, USA
Citation
YANG, Yunbo; CHENG, Yuejia; WANG, Kailun; LI, Xiaoguo; SUN, Jianfei; SHEN, Jiachen; DONG, Xiaolei; CAO, Zhenfu; YANG, Guomin; and DENG, Robert H..
Siniel: Distributed privacy-preserving zkSNARK. (2025). Proceedings of the Network and Distributed System Security Symposium (NDSS 2025), San Diego, CA, USA, February 24-28. 1-30.
Available at: https://ink.library.smu.edu.sg/sis_research/10794
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://eprint.iacr.org/2024/1803