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Journal Articles
- 2024
[j3]Kota Takahashi, Keitaro Hashimoto
, Wakaha Ogata:
Chosen-ciphertext secure code-based threshold public key encryptions with short ciphertext. Des. Codes Cryptogr. 92(2): 277-301 (2024)- 2022
- [j2]Keitaro Hashimoto, Shuichi Katsumata, Kris Kwiatkowski, Thomas Prest:
An Efficient and Generic Construction for Signal's Handshake (X3DH): Post-quantum, State Leakage Secure, and Deniable. J. Cryptol. 35(3): 17 (2022) - 2019
- [j1]Keitaro Hashimoto, Wakaha Ogata:
Unrestricted and compact certificateless aggregate signature scheme. Inf. Sci. 487: 97-114 (2019)
Conference and Workshop Papers
- 2024
- [c5]Sohto Chiku, Keisuke Hara, Keitaro Hashimoto, Toi Tomita, Junji Shikata:
How to Apply Fujisaki-Okamoto Transformation to Registration-Based Encryption. CANS (2) 2024: 145-165 - [c4]Xichen Zhang, Keitaro Hashimoto, Wakaha Ogata:
Security Model for Authenticated Key Exchange, Reconsidered. SCN (2) 2024: 251-271 - 2022
- [c3]Keitaro Hashimoto, Shuichi Katsumata, Thomas Prest:
How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum. CCS 2022: 1399-1412 - 2021
- [c2]Keitaro Hashimoto, Shuichi Katsumata, Eamonn W. Postlethwaite, Thomas Prest, Bas Westerbaan:
A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs. CCS 2021: 1441-1462 - [c1]Keitaro Hashimoto, Shuichi Katsumata, Kris Kwiatkowski, Thomas Prest:
An Efficient and Generic Construction for Signal's Handshake (X3DH): Post-Quantum, State Leakage Secure, and Deniable. Public Key Cryptography (2) 2021: 410-440
Informal and Other Publications
- 2024
- [i6]Hirofumi Yoshioka, Wakaha Ogata, Keitaro Hashimoto:
Towards a Tightly Secure Signature in Multi-User Setting with Corruptions Based on Search Assumptions. IACR Cryptol. ePrint Arch. 2024: 1286 (2024) - 2023
- [i5]Sohto Chiku, Keitaro Hashimoto, Keisuke Hara, Junji Shikata:
Identity-Based Matchmaking Encryption, Revisited: Strong Security and Practical Constructions from Standard Classical and Post-Quantum Assumptions. IACR Cryptol. ePrint Arch. 2023: 1435 (2023) - 2022
- [i4]Keitaro Hashimoto, Shuichi Katsumata, Thomas Prest:
How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum. IACR Cryptol. ePrint Arch. 2022: 1533 (2022) - 2021
- [i3]Keitaro Hashimoto, Shuichi Katsumata, Kris Kwiatkowski, Thomas Prest:
An Efficient and Generic Construction for Signal's Handshake (X3DH): Post-Quantum, State Leakage Secure, and Deniable. IACR Cryptol. ePrint Arch. 2021: 616 (2021) - [i2]Keitaro Hashimoto, Shuichi Katsumata, Eamonn W. Postlethwaite, Thomas Prest, Bas Westerbaan:
A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs. IACR Cryptol. ePrint Arch. 2021: 1407 (2021) - 2019
- [i1]Keitaro Hashimoto, Wakaha Ogata, Toi Tomita:
Tight reduction for generic construction of certificateless signature and its instantiation from DDH assumption. IACR Cryptol. ePrint Arch. 2019: 1367 (2019)
Coauthor Index
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