Jiaxin Guan | 管佳鑫

(Theory × Practice) @ Cryptography

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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.
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.