| 2023 | COCOA | The Two Sheriffs Problem: Cryptographic Formalization and Generalization. | Kota Sugimoto, Takeshi Nakai, Yohei Watanabe, Mitsugu Iwamoto |
| 2023 | ICICS | Secure Multi-party Computation with Legally-Enforceable Fairness. | Takeshi Nakai, Kazumasa Shinagawa |
| 2023 | ICISC | Single-Shuffle Card-Based Protocols with Six Cards per Gate. | Tomoki Ono, Kazumasa Shinagawa, Takeshi Nakai, Yohei Watanabe, Mitsugu Iwamoto |
| 2023 | ICISC | Constant-Deposit Multiparty Lotteries on Bitcoin for Arbitrary Number of Players and Winners. | Shun Uchizono, Takeshi Nakai, Yohei Watanabe, Mitsugu Iwamoto |
| 2022 | ISITA | Card-based Cryptographic Protocols for Private Set Intersection. | Anastasiia Doi, Tomoki Ono, Takeshi Nakai, Kazumasa Shinagawa, Yohei Watanabe, Koji Nuida, Mitsugu Iwamoto |
| 2022 | ISITA | An Improvement of Multi-Party Private Set Intersection Based on Oblivious Programmable PRFs. | Seiya Shimizu, Takeshi Nakai, Yohei Watanabe, Mitsugu Iwamoto |
| 2016 | CANS | Efficient Card-Based Cryptographic Protocols for Millionaires' Problem Utilizing Private Permutations. | Takeshi Nakai, Yuuki Tokushige, Yuto Misawa, Mitsugu Iwamoto, Kazuo Ohta |