| 2025 | FCT | Cyclic Equalizability of Words and Its Application to Card-Based Cryptography. | Kazumasa Shinagawa, Koji Nuida |
| 2025 | IWSEC | Efficient Card-Based Protocols for Symmetric and Partially Doubly Symmetric Functions. | Shota Ikeda, Yoshihiro Takahashi, Kazumasa Shinagawa, Koji Nuida |
| 2025 | IWSEC | Improved Private Simultaneous Messages Protocols for Symmetric Functions with Universal Reconstruction. | Koji Nuida |
| 2025 | PQCrypto | Efficient Theta-Based Algorithms for Computing (ℓ , ℓ )-Isogenies on Kummer Surfaces for Arbitrary Odd ℓ. | Ryo Yoshizumi, Hiroshi Onuki, Ryo Ohashi, Momonari Kudo, Koji Nuida |
| 2025 | STACS | Card-Based Protocols Imply PSM Protocols. | Kazumasa Shinagawa, Koji Nuida |
| 2024 | EuroCrypt | Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search. | Reo Eriguchi, Kaoru Kurosawa, Koji Nuida |
| 2024 | FUN | How to Covertly and Uniformly Scramble the 15 Puzzle and Rubik's Cube. | Kazumasa Shinagawa, Kazuki Kanai, Kengo Miyamoto, Koji Nuida |
| 2023 | ACNS | Explicit and Nearly Tight Lower Bound for 2-Party Perfectly Secure FSS. | Keitaro Hiwatashi, Koji Nuida |
| 2023 | ESORICS | Threshold Fully Homomorphic Encryption Over the Torus. | Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori |
| 2023 | INDOCRYPT | Explicit Lower Bounds for Communication Complexity of PSM for Concrete Functions. | Kazumasa Shinagawa, Koji Nuida |
| 2023 | IWSEC | Efficient Card-Based Millionaires' Protocols via Non-binary Input Encoding. | Koji Nuida |
| 2022 | ACISP | Chosen Ciphertext Secure Keyed Two-Level Homomorphic Encryption. | Yusaku Maeda, Koji Nuida |
| 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 | IWSEC | Computational Irrelevancy: Bridging the Gap Between Pseudo- and Real Randomness in MPC Protocols. | Nariyasu Heseri, Koji Nuida |
| 2022 | IWSEC | On Extension of Evaluation Algorithms in Keyed-Homomorphic Encryption. | Hirotomo Shinoki, Koji Nuida |
| 2022 | TCC | On the Optimal Communication Complexity of Error-Correcting Multi-server PIR. | Reo Eriguchi, Kaoru Kurosawa, Koji Nuida |
| 2021 | AsiaCCS | Accelerating Secure (2+1)-Party Computation by Insecure but Efficient Building Blocks. | Keitaro Hiwatashi, Ken Ogura, Satsuya Ohata, Koji Nuida |
| 2021 | ASIACRYPT | Homomorphic Secret Sharing for Multipartite and General Adversary Structures Supporting Parallel Evaluation of Low-Degree Polynomials. | Reo Eriguchi, Koji Nuida |
| 2021 | CASC | Improved Supersingularity Testing of Elliptic Curves Using Legendre Form. | Yuji Hashimoto, Koji Nuida |
| 2021 | CRYPTO | Non-interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions. | Reo Eriguchi, Kazuma Ohara, Shota Yamada, Koji Nuida |
| 2021 | FC | Efficient Noise Generation to Achieve Differential Privacy with Applications to Secure Multiparty Computation. | Reo Eriguchi, Atsunori Ichikawa, Noboru Kunihiro, Koji Nuida |
| 2021 | ISPEC | Efficient Fully Anonymous Public-Key Trace and Revoke with Adaptive IND-CCA Security. | Mriganka Mandal, Ramprasad Sarkar, Junbeom Hur, Koji Nuida |
| 2021 | PKC | Cryptographic Pseudorandom Generators Can Make Cryptosystems Problematic. | Koji Nuida |
| 2020 | ACNS | An Efficient Secure Division Protocol Using Approximate Multi-bit Product and New Constant-Round Building Blocks. | Keitaro Hiwatashi, Satsuya Ohata, Koji Nuida |
| 2020 | FC | Communication-Efficient (Client-Aided) Secure Two-Party Protocols and Its Application. | Satsuya Ohata, Koji Nuida |
| 2020 | ISITA | A Linear Algebraic Approach to Strongly Secure Ramp Secret Sharing for General Access Structures. | Reo Eriguchi, Noboru Kunihiro, Koji Nuida |
| 2020 | IWSEC | Efficiency and Accuracy Improvements of Secure Floating-Point Addition over Secret Sharing. | Kota Sasaki, Koji Nuida |
| 2020 | NSS | Identity-Based Outsider Anonymous Broadcast Encryption with Simultaneous Individual Messaging. | Mriganka Mandal, Koji Nuida |
| 2020 | ProvSec | Short Lattice Signatures in the Standard Model with Efficient Tag Generation. | Kaisei Kajita, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi |
| 2019 | HCI | Privacy Preservation for Versatile Pay-TV Services. | Kazuto Ogawa, Koji Nuida |
| 2018 | ESORICS | Constant-Round Client-Aided Secure Comparison Protocol. | Hiraku Morita, Nuttapong Attrapadung, Tadanori Teruya, Satsuya Ohata, Koji Nuida, Goichiro Hanaoka |
| 2018 | ICISC | An Efficient Private Evaluation of a Decision Graph. | Hiroki Sudo, Koji Nuida, Kana Shimizu |
| 2018 | ISITA | Tree-based Secure Comparison of Secret Shared Data. | Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Shota Yamada, Koji Nuida, Goichiro Hanaoka |
| 2018 | ISITA | Secure Division Protocol and Applications to Privacy-preserving Chi-squared Tests. | Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Koji Nuida, Shota Yamada, Kana Shimizu, Goichiro Hanaoka, Kiyoshi Asai |
| 2017 | IWSEC | Correction of a Secure Comparison Protocol for Encrypted Integers in IEEE WIFS 2012 (Short Paper). | Baptiste Vinh Mau, Koji Nuida |
| 2016 | ASIACRYPT | Size-Hiding Computation for Multiple Parties. | Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto |
| 2016 | ISITA | Committed AND protocol using three cards with more handy shuffle. | Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto |
| 2015 | EuroCrypt | (Batch) Fully Homomorphic Encryption over Integers for Non-Binary Message Spaces. | Koji Nuida, Kaoru Kurosawa |
| 2015 | IWSEC | Secure Multi-Party Computation Using Polarizing Cards. | Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto |
| 2015 | IWSEC | On Limitations and Alternatives of Privacy-Preserving Cryptographic Protocols for Genomic Data. | Tadanori Teruya, Koji Nuida, Kana Shimizu, Goichiro Hanaoka |
| 2015 | ProvSec | Multi-party Computation with Small Shuffle Complexity Using Regular Polygon Cards. | Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto |
| 2014 | ProvSec | How to Use Pseudorandom Generators in Unconditional Security Settings. | Koji Nuida |
| 2014 | SCN | Chosen Ciphertext Security on Hard Membership Decision Groups: The Case of Semi-smooth Subgroups of Quadratic Residues. | Takashi Yamakawa, Shota Yamada, Koji Nuida, Goichiro Hanaoka, Noboru Kunihiro |
| 2011 | IWSEC | A Mathematical Problem for Security Analysis of Hash Functions and Pseudorandom Generators. | Koji Nuida, Takuro Abe, Shizuo Kaji, Toshiaki Maeno, Yasuhide Numata |
| 2009 | IWSEC | An Error-Tolerant Variant of a Short 2-Secure Fingerprint Code and Its Security Evaluation. | Koji Nuida |