Luke Kowalczyk

I'm currently the Head of Quantitative Research at IEX, where we work on improving execution quality in US equities and options markets through better exchange design.

Before IEX, I did cryptography research at Columbia University. My PhD advisors were Allison Bishop and Tal Malkin, and I was a member of the Crypto Lab at the Columbia Computer Science Department. Check out my crypto publications here:

I am a captain emeritus of the Columbia Ski Team. I love skiing.

"Compact Adaptively Secure ABE for NC1 from k-Lin" (EUROCRYPT 2019)
Runner-up: Best Paper Award! (full version in Journal of Cryptology)
with Hoeteck Wee

"Mitigating the One-Use Restriction in Attribute-Based Encryption" (ICISC 2018)
with Jiahui Liu, Tal Malkin, and Kailash Meiyappan

"Tight Adaptively Secure Broadcast Encryption with Short Ciphertexts and Keys" (SCN 2018)
with Romain Gay and Hoeteck Wee

"A Simple Obfuscation Scheme for Pattern-Matching with Wildcards" (CRYPTO 2018)
with Allison Bishop, Tal Malkin, Valerio Pastro, Mariana Raykova, and Kevin Shi

"Hardness of Non-Interactive Differential Privacy from One-Way Functions" (CRYPTO 2018)
with Tal Malkin, Jonathan Ullman, and Daniel Wichs

"Unbounded ABE via Bilinear Entropy Expansion, Revisited" (EUROCRYPT 2018)
with Jie Chen, Junqing Gong, and Hoeteck Wee

"Access Control Encryption for Equality, Comparison, and More" (PKC 2017)
with Georg Fuchsbauer, Romain Gay, and Claudio Orlandi

"Strong Hardness of Privacy from Weak Traitor Tracing" (TCC 2016-B)
with Tal Malkin, Jonathan Ullman, and Mark Zhandry

"Function-Hiding Inner Product Encryption" (ASIACRYPT 2015)
with Allison Bishop and Abhishek Jain

"Bilinear Entropy Expansion from the Decisional Linear Assumption" (CRYPTO 2015)
with Allison Bishop

IEX Email:
[email protected]