Kohei Nakagawa

According to our database, Kohei Nakagawa authored at least 9 papers between 2020 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2025

Attacks on PRISM-id via Torsion over Small Extension Fields.

Kohei Nakagawa, Hiroshi Onuki

IACR Cryptol. ePrint Arch., 2025

SQIsign2DPush: Faster Signature Scheme Using 2-Dimensional Isogenies.

Kohei Nakagawa, Hiroshi Onuki

IACR Cryptol. ePrint Arch., 2025

2024

SQIsign2D-East: A New Signature Scheme Using 2-dimensional Isogenies.

Kohei Nakagawa, Hiroshi Onuki

IACR Cryptol. ePrint Arch., 2024

QFESTA: Efficient Algorithms and Parameters for FESTA Using Quaternion Algebras.

Kohei Nakagawa, Hiroshi Onuki

Proceedings of the Advances in Cryptology - CRYPTO 2024, 2024

Ideal-to-Isogeny Algorithm Using 2-Dimensional Isogenies and Its Application to SQIsign.

Hiroshi Onuki, Kohei Nakagawa

Proceedings of the Advances in Cryptology - ASIACRYPT 2024, 2024

SQIsign2D-East: A New Signature Scheme Using 2-Dimensional Isogenies.

Kohei Nakagawa, Hiroshi Onuki, Wouter Castryck, Mingjie Chen, Riccardo Invernizzi, Gioella Lorenzon, Frederik Vercauteren

Proceedings of the Advances in Cryptology - ASIACRYPT 2024, 2024

2023

L1-norm ball for CSIDH: Optimal strategy for choosing the secret key space.

Kohei Nakagawa, Hiroshi Onuki, Atsushi Takayasu, Tsuyoshi Takagi

Discret. Appl. Math., March, 2023

Making the Identity-Based Diffie-Hellman Key Exchange Efficiently Revocable.

Kohei Nakagawa, Atsushi Fujioka, Akira Nagai, Junichi Tomida, Keita Xagawa, Kan Yasuda

Proceedings of the Progress in Cryptology - LATINCRYPT 2023, 2023

2020

L₁-Norm Ball for CSIDH: Optimal Strategy for Choosing the Secret Key Space.

Kohei Nakagawa, Hiroshi Onuki, Atsushi Takayasu, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2020