現在、PQShieldで勝又秀一主任研究員のもとで暗号理論の研究を行っています。また、協力研究員として産業技術総合研究所 (AIST)にも所属しています。2024年3月に電気通信大学で博士(工学)を取得しました。
博士課程では、主に離散対数や格子ベースの集約署名方式、多重署名方式、閾値署名方等の研究を行っていました。 現在は、主に閾値暗号(threshold cryptography)、パスワードベースプロトコル、対話プロトコルなどの研究に従事しています。
連絡先: kaoru.takemure [at] pqshield.com / kaoru.takemure [at] gmail.com
関連リンク: dblp / google scholar
2025:
"Unmasking TRaccoon: A Lattice-Based Threshold Signature with An Efficient Identifiable Abort Protocol"
Rafael del Pino, Shuichi Katsumata, Guilhem Niot, Michael Reichle, Kaoru Takemure
Crypto 2025 (発表資料)
2024:
"Adaptively Secure 5 Round Threshold Signatures from MLWE/MSIS and DL with Rewinding"
Shuichi Katsumata, Michael Reichle, Kaoru Takemure
Crypto 2024
"Two-Round Threshold Signature from Algebraic One-More Learning with Errors"
Thomas Espitau, Shuichi Katsumata, Kaoru Takemure
Crypto 2024 (発表資料)
"Tighter Adaptive IBEs and VRFs: Revisiting Waters’ Artificial Abort"
Goichiro Hanaoka, Shuichi Katsumata, Kei Kimura, Kaoru Takemure, Shota Yamada.
TCC 2024 (発表資料)
2020:
"Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers"
Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta
ProvSec 2020
2025:
"Two-Round Threshold Signature from Algebraic One-More Learning with Errors"
Thomas Espitau, Shuichi Katsumata, Kaoru Takemure
Journal of Cryptology, Volume 38, article number 31, 2025
2024:
"More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters for Standardized Elliptic Curves"
Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
ePrint
2021:
"Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers"
Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
"Cryptanalysis of Aggregate Γ-Signature and Practical Countermeasures in Application to Bitcoin."
Goichiro Hanaoka, Kazuo Ohta, Yusuke Sakai, Bagus Santoso, Kaoru Takemure, Yunlei Zhao
ePrint
"Two-Round Threshold Signature from Algebraic One-More Learning with Errors"
- 暗号と情報セキュリティワークショップ, 9月, 2024
- ENSL/CWI/KCL/IRISA Joint Online Cryptography Seminars, 11月, 2024, (発表資料)
日本学術振興会(JSPS)特別研究員 (DC2), 2022