Jiaheng Zhang

I am an assistant professor in School of Computing at National University of Singapore (NUS). I obtained Ph.D. degree in Computer Science at UC Berkeley, where I was advised by Prof. Dawn Song. I also worked closely with Prof. Yupeng Zhang. And I was a member of RISE Lab, Initiative for Cryptocurrencies & Contracts Lab (IC3), The Berkeley Center for Responsible, Decentralized Intelligence (RDI) and Berkeley AI Research (BAIR).

My research interests lie in security, privacy and applied cryptography, especially zero-knowledge proofs and applications on blockchain and machine learning models. My research on zkBridge and cross-chain bridges in blockchain has been successfully commercialized by Polyhedra Network.

Before coming to Berkeley, I received my Bachelor's degree in ACM Honors Class of Shanghai Jiao Tong University, where I worked under the supervision of Prof. Xiaotie Deng. During my undergraduate, I was also a research intern at Cornell, advised by Prof. Elaine Shi.

I have interned at Meta, NTT Research, Qizhi Institute and Alibaba. I was supported by the Facebook Fellowship during my Ph.D..

I am looking for motivated students to join my group. Please send an email to jiahengzhang.recruit AT gmail.com with your CV and transcript.

Email / Google Scholar /

Pianist: Scalable zkRollups via Fully Distributed Zero-Knowledge Proofs [pdf]
Tianyi Liu, Tiancheng Xie, Jiaheng Zhang, Dawn Song, Yupeng Zhang
IEEE Symposium on Security and Privacy (S&P), 2024

Correlation Intractability and SNARGs from Sub-exponential DDH [pdf]
(Alphabetical order) Arka Rai Choudhuri, Sanjam Garg, Abhishek Jain, Zhengzhong Jin, Jiaheng Zhang
Annual International Cryptology Conference (CRYPTO), 2023

zkBridge: Trustless Cross-chain Bridges Made Practical [pdf]
Tiancheng Xie, Jiaheng Zhang, Zerui Cheng, Fan Zhang, Yupeng Zhang, Yongzheng Jia, Dan Boneh, Dawn Song
The ACM Conference on Computer and Communications Security (CCS), 2022

Polynomial Commitment with a One-to-Many Prover and Applications [pdf]
Jiaheng Zhang, Tiancheng Xie, Thang Hoang, Elaine Shi, Yupeng Zhang
USENIX Security Symposium (Security), 2022

Doubly Efficient Interactive Proofs for General Arithmetic Circuits with Linear Prover Time [pdf]
Jiaheng Zhang, Tianyi Liu, Weijie Wang, Yinuo Zhang, Dawn Song, Xiang Xie, Yupeng Zhang
The ACM Conference on Computer and Communications Security (CCS), 2021

Zero Knowledge Proofs for Decision Tree Predictions and Accuracy [pdf] [code]
Jiaheng Zhang, Zhiyong Fang, Yupeng Zhang, Dawn Song
The ACM Conference on Computer and Communications Security (CCS), 2020

Transparent Polynomial Delegation and Its Applications to Zero Knowledge Proof [pdf] [video] [code]
Jiaheng Zhang*, Tiancheng Xie*, Yupeng Zhang, Dawn Song
IEEE Symposium on Security and Privacy (S&P), 2020

Libra: Succinct Zero-Knowledge Proofs with Optimal Prover Computation [pdf] [video] [code]
Tiancheng Xie*, Jiaheng Zhang*, Yupeng Zhang, Charalampos Papamanthou, Dawn Song
Annual International Cryptology Conference (CRYPTO), 2019

Searching for Cryptogenography Upper Bounds via Sum of Square Programming [pdf]
(Alphabetical order) Dominik Scheder, Shuyang Tang, Jiaheng Zhang
The 30th International Symposium on Algorithms and Computation (ISAAC), 2019

Libra: Succinct Zero-Knowledge Proofs with Optimal Prover Computation [Hacking, Distributed] [Medium]