Kaiyi Zhang (张凯羿)

I am currently a postdoc at Tsinghua University.

• Email: kaiyizhang [аt] tsinghua [dοt] edu [dоt] cn
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Research Interests

• Computational Number Theory
• Post-Quantum Cryptography
• Cryptanalysis
• Quantum Information

Experience

• Jul. 2025 - Present: Postdoctoral Researcher (Shuimu Tsinghua Scholar Program), Tsinghua University, Hosted by Professor Xiaoyun Wang
• Aug. 2019 - Dec. 2019: Intern Student, Northwestern University, Advised by Professor Xiao Wang

Education

• 2020 - 2025: Ph.D., Department of Computer Science and Engineering, Shanghai Jiao Tong University
• 2016 - 2020: Bachelor, Computer Science at Zhiyuan College (ACM class), Shanghai Jiao Tong University

Selected Publications

PNAS is a top-tier science journal.
CRYPTO and ASIACRYPT are top-tier conferences related to cryptography.
Equal contribution is indicated by an asterisk(*).

• Li C L*, Zhang K Y*, Zhang X, et al. Device-independent quantum randomness-enhanced zero-knowledge proof[J]. Proceedings of the National Academy of Sciences (PNAS), 2023, 120(45): e2205463120.
• Kaiyi Zhang, Qingju Wang, Yu Yu, Chun Guo, Hongrui Cui. "Algebraic Attacks on Round-Reduced RAIN and Full AIM-III", Advances in Cryptology - ASIACRYPT 2023, ePrint/2023/1397
• Kaiyi Zhang, Hongrui Cui, Yu Yu. "Revisiting the Constant-sum Winternitz One-time Signature with Applications to SPHINCS+ and XMSS", Advances in Cryptology - CRYPTO 2023, ePrint/2023/850
• Hongrui Cui, Kaiyi Zhang, Yu Chen, Zhen Liu, Yu Yu. "MPC-in-Multi-Heads: a Multi-Prover Zero-Knowledge Proof System", in 26th European Symposium on Research in Computer Security - ESORICS 2021.
• Wang L J*, Zhang K Y*, Wang J Y, et al. Experimental authentication of quantum key distribution with post-quantum cryptography[J]. npj quantum information, 2021, 7(1): 67.

Last Update : July 2025