Paul Gerhart

Paul Gerhart

PhD student
Privacy Enhancing Technologies
TU Wien, Vienna, Austria
Office: FB 0307
Email: mail [at] paul-gerhart.de

I am a doctoral student at the Privacy Enhancing Technologies research unit at TU Wien in Austria, under the supervision of Dominique Schröder.

Research

My research focuses on the design and analysis of advanced cryptographic protocols. In particular threshold and adaptor signatures, partially-oblivious pseudorandom functions (PoPRFs), and password-based cryptography. I am especially interested in achieving strong security guarantees in challenging settings, and in developing constructions that are both theoretically sound and practically efficient.

Education

I received an M.Sc. in Computer Science from FAU Erlangen-Nürnberg (2020–2022), where I specialized in security and cryptography. I also hold a B.Sc. in Mathematics from the University of Bonn (2017–2020), focusing on lower-dimensional algebraic topology, in particular Riemann surfaces and 3-manifold topology.

Recent Publications

Ruben Baecker, Paul Gerhart, and Dominique Schröder
ASIACRYPT 2025
Behzad Abdolmaleki, Ruben Baecker, Paul Gerhart, Mike Graf, Mojtaba Khalili, Daniel Rausch, and Dominique Schröder
ASIACRYPT 2025
Ruben Baecker, Paul Gerhart, Daniel Rausch, and Dominique Schröder
CRYPTO 2025
René Raab, Pascal Berrang, Paul Gerhart, and Dominique Schröder
PoPETS 2025

Preprints

Paul Gerhart, Davide Li Calsi, Luigi Russo, and Dominique Schröder
Paul Gerhart, Daniel Rausch, and Dominique Schröder
Ruben Baecker, Paul Gerhart, Jonathan Katz, and Dominique Schröder

Recent Prototypes

HildeGUARD LogoHildeGUARD

A semi-adaptively secure password-hardened encryption scheme (ASIACRYPT 2025)

Attack-SimplePHE LogoAttack-SimplePHE

A semi-adaptive corruption attack on Virgil Security's SimplePHE implementation

SimplePHE LogoSimplePHE

A Rust reimplementation of SimplePHE (USENIX 2018)