Department of Mathematical Informatics,
Graduate School of Information Science and Technology
Room 354,Engineering Building 6, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656
Tel: 03-5841-6959 (ext. 26959)
|March 2012||Bachelor of Engineering, Department of Mathematical Engineering and Information Physics, Faculty of Engineering, The University of Tokyo|
|March 2014||Master of Science, Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo|
|March 2017||Ph.D., Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo|
|April 2017||Research Associate, Department of Mathematical Informatics, Graduate School of Information Science and Technology, The University of Tokyo|
|April 2020||Senior Researcher, Security Fundamental Laboratory, Cybersecurity Research Institute, National Institute of Information and Communications Technology|
|October 2021||Lecturer, Department of Mathematical Informatics, Graduate School of Information Science and Technology, The University of Tokyo|
We are conducting research on cryptography, which is a fundamental technology for the secure operation of the information society. ● Research on public-key cryptography, in particular, the construction and security proofs of post-quantum cryptosystems. ● Research on attack and solution algorithms for mathematical problems related to public key cryptosystems and their security.
Main paper and books
- Atsushi Takayasu, Yao Lu, and Liqiang Peng. Small CRT-exponent RSA Revisited. Journal of Cryptology, Vol. 32, Issue 4, pp. 1337-1382, 2019.
- Shuichi Katsumata, Takahiro Matsuda, and Atsushi Takayasu. Lattice-based Revocable (Hierarchical) IBE with Decryption Key Exposure Resistance. Proc. PKC 2019, LNCS 11443, pp. 441-471, Springer, 2019.
- Atsushi Takayasu and Noboru Kunihiro. Partial Key Exposure Attacks on RSA: Achieving the Boneh-Durfee Bound. Theoretical Computer Science, Vol. 761, pp. 51-77, 2019.