Keitaro Hiwatashi

According to our database, Keitaro Hiwatashi authored at least 7 papers between 2021 and 2025.

Collaborative distances:

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

2025

Lower Bounds on the Bottleneck Complexity of Secure Multiparty Computation.

Reo Eriguchi, Keitaro Hiwatashi

IACR Cryptol. ePrint Arch., 2025

Negative Results on Information-Theoretic Additive Randomized Encodings.

Keitaro Hiwatashi

Proceedings of the Applied Cryptography and Network Security, 2025

2024

Correlated Randomness Reduction in Domain-Restricted Secure Two-Party Computation.

Keitaro Hiwatashi, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024

2023

Exponential Correlated Randomness Is Necessary in Communication-Optimal Perfectly Secure Two-Party Computation.

Keitaro Hiwatashi, Koji Nuida

Proceedings of the 4th Conference on Information-Theoretic Cryptography, 2023

Explicit and Nearly Tight Lower Bound for 2-Party Perfectly Secure FSS.

Keitaro Hiwatashi, Koji Nuida

Proceedings of the Applied Cryptography and Network Security, 2023

2022

An Efficient Secure Division Protocol Using Approximate Multi-Bit Product and New Constant-Round Building Blocks.

Keitaro Hiwatashi, Satsuya Ohata, Koji Nuida

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022

2021

Accelerating Secure (2+1)-Party Computation by Insecure but Efficient Building Blocks.

Keitaro Hiwatashi, Ken Ogura, Satsuya Ohata, Koji Nuida

Proceedings of the ASIA CCS '21: ACM Asia Conference on Computer and Communications Security, 2021