| 2022 | ASIACRYPT | Compact FE for Unbounded Attribute-Weighted Sums for Logspace from SXDH. | Pratish Datta, Tapas Pal, Katsuyuki Takashima |
| 2020 | CCS | Hybrid Meet-in-the-Middle Attacks for the Isogeny Path-Finding Problem. | Yasuhiko Ikematsu, Ryoya Fukasaku, Momonari Kudo, Masaya Yasuda, Katsuyuki Takashima, Kazuhiro Yokoyama |
| 2020 | ICISC | An Efficient Authenticated Key Exchange from Random Self-reducibility on CSIDH. | Tomoki Kawashima, Katsuyuki Takashima, Yusuke Aikawa, Tsuyoshi Takagi |
| 2019 | PKC | Efficient Attribute-Based Signatures for Unbounded Arithmetic Branching Programs. | Pratish Datta, Tatsuaki Okamoto, Katsuyuki Takashima |
| 2019 | ProvSec | One-Round Authenticated Group Key Exchange from Isogenies. | Atsushi Fujioka, Katsuyuki Takashima, Kazuki Yoneyama |
| 2018 | ASIACRYPT | Adaptively Simulation-Secure Attribute-Hiding Predicate Encryption. | Pratish Datta, Tatsuaki Okamoto, Katsuyuki Takashima |
| 2018 | ASIACRYPT | Unbounded Inner Product Functional Encryption from Bilinear Maps. | Junichi Tomida, Katsuyuki Takashima |
| 2018 | ICISC | Supersingular Isogeny Diffie-Hellman Authenticated Key Exchange. | Atsushi Fujioka, Katsuyuki Takashima, Shintaro Terada, Kazuki Yoneyama |
| 2018 | ICISC | New Assumptions on Isogenous Pairing Groups with Applications to Attribute-Based Encryption. | Takeshi Koshiba, Katsuyuki Takashima |
| 2018 | ISITA | Multi-party Key Exchange Protocols from Supersingular Isogenies. | Satoshi Furukawa, Noboru Kunihiro, Katsuyuki Takashima |
| 2017 | ACISP | New Proof Techniques for DLIN-Based Adaptively Secure Attribute-Based Encryption. | Katsuyuki Takashima |
| 2015 | ProvSec | Tighter Security for Efficient Lattice Cryptography via the Rnyi Divergence of Optimized Orders. | Katsuyuki Takashima, Atsushi Takayasu |
| 2014 | SCN | Expressive Attribute-Based Encryption with Constant-Size Ciphertexts from the Decisional Linear Assumption. | Katsuyuki Takashima |
| 2013 | Pairing | Predicate- and Attribute-Hiding Inner Product Encryption in a Public Key Setting. | Yutaka Kawai, Katsuyuki Takashima |
| 2013 | PKC | Decentralized Attribute-Based Signatures. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2012 | ASIACRYPT | Fully Secure Unbounded Inner-Product and Attribute-Based Encryption. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2012 | EuroCrypt | Adaptively Attribute-Hiding (Hierarchical) Inner Product Encryption. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2011 | CANS | Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2011 | PKC | Efficient Attribute-Based Signatures for Non-monotone Predicates in the Standard Model. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2010 | CRYPTO | Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2010 | EuroCrypt | Fully Secure Functional Encryption: Attribute-Based Encryption and (Hierarchical) Inner Product Encryption. | Allison B. Lewko, Tatsuaki Okamoto, Amit Sahai, Katsuyuki Takashima, Brent Waters |
| 2009 | ASIACRYPT | Hierarchical Predicate Encryption for Inner-Products. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2008 | ICISC | Simple Algorithms for Computing a Sequence of 2-Isogenies. | Reo Yoshida, Katsuyuki Takashima |
| 2008 | Pairing | Homomorphic Encryption and Signatures from Vector Decomposition. | Tatsuaki Okamoto, Katsuyuki Takashima |
| 2005 | WISA | Practical Modifications of Leadbitter et al.'s Repeated-Bits Side-Channel Analysis on (EC)DSA. | Katsuyuki Takashima |
| 2004 | ICISC | New Families of Hyperelliptic Curves with Efficient Gallant-Lambert-Vanstone Method. | Katsuyuki Takashima |