Weakened Random Oracle Models with Target Prefix. - Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (SecITC, 2018)

A t-out-of-n Redactable Signature Scheme. - Masayuki Tezuka; Xiangyu Su; Keisuke Tanaka (CANS, 2019)

Improved Security Proof for the Camenisch-Lysyanskaya Signature-Based Synchronized Aggregate Signature Scheme. - Masayuki Tezuka; Keisuke Tanaka (ACISP, 2020)

Security Definitions on Time-Lock Puzzles. - Daiki Hiraga; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2020)

Forward Secure Message Franking. - Hiroki Yamamuro; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2021)

Watermarkable Signature with Computational Function Preserving. - Kyohei Sudo; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Redactable Signature with Compactness from Set-Commitment. - Masayuki Tezuka; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Pointcheval-Sanders Signature-Based Synchronized Aggregate Signature. - Masayuki Tezuka; Keisuke Tanaka (ICISC, 2022)

1-out-of-n Oblivious Signatures: Security Revisited and a Generic Construction with an Efficient Communication Cost. - Masayuki Tezuka; Keisuke Tanaka (ICISC (1), 2023)

Forward Secure Message Franking with Updatable Reporting Tags. - Hiroki Yamamuro; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

On the Relationship between FuncCPA and FuncCPA+. - Takumi Shinozaki; Keisuke Tanaka; Masayuki Tezuka; Yusuke Yoshida (IACR Cryptol. ePrint Arch., 2024)

Practical Quantum Public Key Encryption from One-way Functions. - Kyohei Sudo; Keisuke Fujii 004; Keisuke Hara; Kosuke Ito; Masayuki Tezuka; Yusuke Yoshida (APKC@AsiaCCS, 2025)

Universally Composable Relaxed Asymmetric Password-Authenticated Key Exchange. - Shuya Hanai; Keisuke Tanaka; Masayuki Tezuka; Yusuke Yoshida (IACR Cryptol. ePrint Arch., 2025)

Quantum Search-to-Decision Reduction for the LWE Problem. - Kyohei Sudo; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2025)