CS Talk - Chenkai Weng

Event time: 
Tuesday, August 30, 2022 - 1:00pm
Hybrid: In person: AKW 200 & Zoom Presentation See map
51 Prospect Street
New Haven, CT 06511
Event description: 
CS Talk
Chenkai Weng
Host: Ruzica Piskac
If you would like to meet with the speaker, please let Ruzica know.
In person: AKW 200 
Title: Efficient Interactive Zero Knowledge Proof  Based on VOLE
Recent works on interactive zero-knowledge (ZK) protocols provide a new paradigm with high efficiency and scalability. However, these protocols suffer from high communication overhead, often linear to the circuit size. In this talk, I will first revisit prior state-of-the-art VOLE-based ZK protocol Quicksilver. Then I will cover our new protocol Antman, which is the first VOLE-based ZK protocol that achieves communication overhead sublinear to the circuit size, while maintaining a similar level of computational efficiency.
Short Bio:
Chenkai Weng is a PhD student at the Department of Computer Science in Northwestern University. He is advised by Professor Xiao Wang. His research focuses on secure multi-party computation and zero-knowledge proofs. His prior works include concrete security analysis of the garbled circuits protocol, efficient correlated oblivious transfer and VOLE-based zero-knowledge proofs. He was a research intern at Microsoft Research in 2021 and is currently a summer associate at the cryptographic team in JPMorgan Chase.