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.
📰 News
- I am selected as a finalist for the Qualcomm Innovation Fellowship, along with Tianyao Gu!
- I will be visiting Aarhus University during summer 2026 for MPC in the Wild!
Publications
- Concretely-Efficient Multi-Key Homomorphic Secret Sharing and Applications
Kaiwen He, Sacha Servan-Schreiber, Geoffroy Couteau, and Srinivas Devadas - Passive SSH Key Compromise via Lattices
Keegan Ryan, Kaiwen He, George Arnold Sullivan, and Nadia Heninger - Critique of: “A Parallel Framework for Constraint-Based Bayesian Network Learning via Markov Blanket Discovery” by SCC Team from UC San Diego
A. Gupta, J. Ge, J. Li, Z. Kong, Kaiwen He, M. Mikhailov, B. Chin, X. Li, M. Apodaca, P. Rodriguez, M. Tatineni, M. Thomas, and S. BhattTPDS 2022 Paper
Talks
- Concretely-Efficient Multi-Key Homomorphic Secret Sharing and Applications
- Northeastern University, Boston, MA, March 2026
- Boston University, Boston, MA, February 2026
- Google, New York, NY, January 2026
- Berkeley Security Seminar, Berkeley, CA, January 2026
- UCSD Security Lunch, La Jolla, CA, January 2026
- MIT CIS Seminar (with Lali Devadas), Cambridge, MA, December 2025 Slides
- Passive SSH Key Compromise via Lattices