I'm an Associate Professor in the Cryptography Engineering Laboratory at the University of Osaka, Japan, and also a visiting researcher at the National Institute of Advanced Industrial Science and Technology (AIST), Japan.
Prior to this, I was a researcher at AIST and a visiting researcher at Yokohama National University, Japan.
My current research area is (theoretical and practical) cryptography, particularly the design of advanced cryptographic primitives. I work on proposing new cryptographic techniques with various functionalities, as well as on the theoretical security analysis of various cryptographic schemes.
I am always open to inquiries regarding collaborative research, including consultation, security evaluation, and development on (advanced) cryptographic primitives.
We are also recruiting Ph.D. students, postdoctoral researchers, and research staff in the field of cryptographic theory.
Contact: hara-keisuke [at] ist.osaka-u.ac.jp
Our paper "(Re-)Formalization and Construction of Reusable and Robust Threshold Fuzzy Extractors" is accepted at ACNS2026.
Our paper "Hierarchical Identity-Based Matchmaking Encryption" is accepted at IEICE Trans. on Fundamentals of Electronics, Comm. and Computer Sciences.