Lucas Kowalczyk

I completed my PhD in November 2018. My advisors at Columbia were Allison Bishop and Tal Malkin, and I served as the illustrious "Head of Cyber" for the Crypto Lab of the Columbia Computer Science Department. Check out some of my crypto research here: [Research]

I now work as a Quantiative Researcher at IEX, one of the newest US stock exchanges. Check out our blog here: Boxes + Lines

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


public key

"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
"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
More (hopefully) coming soon!