Jiaxin Guan | 管佳鑫
(Theory × Practice) @ Cryptography

jiaxin [at] guan [dot] io
I am an Applied Cryptographer at Zellic, where I audit and conduct research across a wide range of advanced cryptographic systems.
My academic research focuses on the space aspects of cryptography, exploring scenarios where space is a limited resource for either adversaries or honest users. This includes work on the Bounded Storage Model, incompressible cryptography, streaming functional encryption, and space lower bounds. I am also broadly interested in other topics in theoretical and applied cryptography in general.
Previously, I was an Assistant Professor / Faculty Fellow at New York University, hosted by Marshall Ball and Yevgeniy Dodis. I earned my PhD from Princeton University, where I was fortunate to be advised by Mark Zhandry. I graduated with a B.S. with Honors and a M.S. from Stanford University, with Dan Boneh as my advisor.
When I’m not working, I mostly enjoy photography, theater, and cooking.
News
Jun 16, 2025 | I am starting my new position as an Applied Cryptographer at Zellic. |
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Dec 06, 2024 | My paper “HELP: Everlasting Privacy through Server-Aided Randomness” will be published in the new IACR journal Communications in Cryptology Volume 1, Issue 4. Joint work with Yevgeniy Dodis, Peter Hall, and Alison Lin. |
Nov 05, 2024 | I will serve on the Editorial Board of IACR Communications in Cryptology 2025. |
Oct 18, 2024 | I will serve as a PC member of CRYPTO 2025. |
May 03, 2024 | My paper “On Sequential Functions and Fine-Grained Cryptography” is to appear at CRYPTO 2024. Joint work with Hart Montgomery. |