Keitaro Hashimoto

Orcid: 0000-0002-2232-9443

According to our database1, Keitaro Hashimoto authored at least 12 papers between 2019 and 2025.

Collaborative distances:

Timeline

2019
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2025
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Bibliography

2025
Signatures with Tight Adaptive Corruptions from Search Assumptions.
IACR Cryptol. ePrint Arch., 2025

Bundled Authenticated Key Exchange: A Concrete Treatment of (Post-Quantum) Signal's Handshake Protocol.
IACR Cryptol. ePrint Arch., 2025

2024
Chosen-ciphertext secure code-based threshold public key encryptions with short ciphertext.
Des. Codes Cryptogr., February, 2024

Towards a Tightly Secure Signature in Multi-User Setting with Corruptions Based on Search Assumptions.
IACR Cryptol. ePrint Arch., 2024

Security Model for Authenticated Key Exchange, Reconsidered.
Proceedings of the Security and Cryptography for Networks - 14th International Conference, 2024

How to Apply Fujisaki-Okamoto Transformation to Registration-Based Encryption.
Proceedings of the Cryptology and Network Security - 23rd International Conference, 2024

2023
Identity-Based Matchmaking Encryption, Revisited: Strong Security and Practical Constructions from Standard Classical and Post-Quantum Assumptions.
IACR Cryptol. ePrint Arch., 2023

2022
An Efficient and Generic Construction for Signal's Handshake (X3DH): Post-quantum, State Leakage Secure, and Deniable.
J. Cryptol., 2022

How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum.
IACR Cryptol. ePrint Arch., 2022

2021
A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs.
IACR Cryptol. ePrint Arch., 2021

2019
Unrestricted and compact certificateless aggregate signature scheme.
Inf. Sci., 2019

Tight reduction for generic construction of certificateless signature and its instantiation from DDH assumption.
IACR Cryptol. ePrint Arch., 2019


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