| 2024 | ISITA | Leakable Mnemonic Phrase: A New Orientation of Wallets Backup Based on Biometric-Key. | Ken Naganuma, Takayuki Suzuki, Takatoshi Ohara |
| 2024 | ISITA | Proof of Origin: Creating Data Authenticity by Biometric Information. | Takayuki Suzuki, Ken Naganuma, Kaiho Fukuchi, Takatoshi Ohara |
| 2019 | ICISSP | Definition and Efficient Construction of Encrypted k-anonymization Scheme. | Masayuki Yoshino, Takayuki Suzuki, Ken Naganuma, Hisayoshi Sato |
| 2018 | ISITA | Decentralized Netting Protocol over Consortium Blockchain. | Ken Naganuma, Masayuki Yoshino, Hisayoshi Sato, Nishio Yamada, Takayuki Suzuki, Noboru Kunihiro |
| 2018 | IWSEC | Inference Attacks on Encrypted Databases Based on Order Preserving Assignment Problem. | Sota Onozawa, Noboru Kunihiro, Masayuki Yoshino, Ken Naganuma |
| 2017 | ISPEC | A Secure and Practical Signature Scheme for Blockchain Based on Biometrics. | Yosuke Kaga, Masakazu Fujio, Ken Naganuma, Kenta Takahashi, Takao Murakami, Tetsushi Ohki, Masakatsu Nishigaki |
| 2012 | ISITA | Upper bound of the shortest vector coefficients and its applications. | Ken Naganuma, Masayuki Yoshino, Hisayoshi Sato |
| 2012 | ProvSec | Symmetric Inner-Product Predicate Encryption Based on Three Groups. | Masayuki Yoshino, Noboru Kunihiro, Ken Naganuma, Hisayoshi Sato |