Keitaro Hashimoto

Publication Activity (10 Years)

Years Active: 2019-2024
Publications (10 Years): 12

Top Topics

Multilevel Secure

Signature Scheme

Top Venues

IACR Cryptol. ePrint Arch.

Des. Codes Cryptogr.

Publications

Kota Takahashi, Keitaro Hashimoto, Wakaha Ogata
Chosen-ciphertext secure code-based threshold public key encryptions with short ciphertext. Des. Codes Cryptogr. 92 (2) (2024)
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 (2024)
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 (2023)
Keitaro Hashimoto, Shuichi Katsumata, Thomas Prest
How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum. CCS (2022)
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 (2022)
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) (2022)
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 (2021)
Keitaro Hashimoto, Shuichi Katsumata, Eamonn Postlethwaite, Thomas Prest, Bas Westerbaan
A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs. IACR Cryptol. ePrint Arch. 2021 (2021)
Keitaro Hashimoto, Shuichi Katsumata, Eamonn Postlethwaite, Thomas Prest, Bas Westerbaan
A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs. CCS (2021)
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)
Keitaro Hashimoto, Wakaha Ogata
Unrestricted and compact certificateless aggregate signature scheme. Inf. Sci. 487 (2019)
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 (2019)