Kaiwen He

Kaiwen He

Ph.D. student in Computer Science

About Me

I am Kevin He (also known by Kaiwen He), a Ph.D. student in Computer Science at MIT, where I am fortunate to be advised by Srini Devadas. Previously, I earned my bachelor’s degree in Computer Engineering from UC San Diego, where I was fortunate to work with Nadia Heninger.

I am broadly interested in applied cryptography. I recently developed the first practical implementation of multi-key homomorphic secret sharing, with a 45× speedup over prior work. As a bonus, it uncovers a structural simplification that could be of independent interest.

Publications

  • Concretely-Efficient Multi-Key Homomorphic Secret Sharing and Applications
    Kaiwen He, Sacha Servan-Schreiber, Geoffroy Couteau, and Srinivas Devadas
    S&P 2026 Paper  •  Code  •  Slides
  • Passive SSH Key Compromise via Lattices
    Keegan Ryan, Kaiwen He, George Arnold Sullivan, and Nadia Heninger
    CCS 2023 Paper  •  IPsec Module Code  •  Slides
  • Critique of: “A Parallel Framework for Constraint-Based Bayesian Network Learning via Markov Blanket Discovery” by SCC Team from UC San Diego
    Arunav Gupta, John Ge, John Li, Zihao Kong, Kaiwen He, Matthew Mikhailov, Bryan Chin, Xiaochen Li, Max Apodaca, Paul Rodriguez, Mahidar Tatineni, Mary Thomas, and Santosh Bhatt
    TPDS 2022 Paper

Talks