Awards

• Tsujii Shigeo Security Award, 2023, for the paper: How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum (with Keitaro Hashimoto and Thomas Prest.)

• MIT Technology Review, Innovators Under 35 Japan, 2022. Japanese Website. English Website.

•  Tsujii Shigeo Security Award, 2022, for the paper: A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs (with Keitaro Hashimoto, Eamonn W. Postlethwaite, Thomas Prest, Bas Westerbaan.)

• Symposium on Cryptography and Information Security 2021 (SCIS 2021), Best Paper Award (received by Keitaro Hashimoto)

& Tsujii Shigeo Security Award, 2021.
- for the paper: An Efficient and Generic Construction for Signal’s Handshake (X3DH): Post-Quantum, State Leakage Secure, and Deniable. (with Keitaro Hashimoto, Kris Kwiatkowski,  Thomas Prest.)

• Tsujii Shigeo Security Award, 2021, for the paper: Scalable Ciphertext Compression Techniques for Post-Quantum KEMs and their Applications. (with Kris Kwiatkowski,  Federico Pintore, Thomas Prest.)

• Dean's Award for Outstanding Achievement from Graduate School of Frontier Science (Ph.D) (top honor in the department), The University of Tokyo. May, 2019. 

• Invited to Journal of Cryptography from ASIACRYPT 2018.

• Computer Security Symposium 2017 (CSS2017), Best Student Paper Award.

& Tsujii Shigeo Security Award, 2018.
- for the paper: On the Untapped Potential of Encoding Predicates by Arithmetic Circuits and Their Applications. 

• Research Fellowships for Doctoral Scientists, Japan Society for the Promotion of Science (JSPS). 2017.

• Symposium on Cryptography and Information Security 2016 (SCIS 2016), Best Paper Award. 

& Tsujii Shigeo Security Award, 2017.
- for the paper: Partitioning via Non-linear Polynomial Functions: More Compact IBEs from Ideal Lattices and Bilinear Maps. (with Shota Yamada.)