Hiroki Okada

According to our database, Hiroki Okada authored at least 23 papers between 2017 and 2024.

Collaborative distances:

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

2024

Private Verification in Multi-stakeholder Environment and its Application to Stable Matching.

Toru Nakamura, Hiroki Okada, Kazuhide Fukushima, Takamasa Isohara

SN Comput. Sci., March, 2024

Simulation-Secure Threshold PKE from Standard (Ring-)LWE.

Hiroki Okada, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2024

On Algebraic Homomorphic Encryption and its Applications to Doubly-Efficient PIR.

Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert

IACR Cryptol. ePrint Arch., 2024

Revisiting the May-Meurer-Thomae Algorithm - Solving McEliece-1409 in One Day.

Shintaro Narisada, Shusaku Uemura, Hiroki Okada, Hiroki Furue, Yusuke Aikawa, Kazuhide Fukushima

IACR Cryptol. ePrint Arch., 2024

Time-Memory Trade-off Algorithms for Homomorphically Evaluating Look-up Table in TFHE.

Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Takashi Nishide

IACR Cryptol. ePrint Arch., 2024

Solving McEliece-1409 in One Day - Cryptanalysis with the Improved BJMM Algorithm.

Shintaro Narisada, Shusaku Uemura, Hiroki Okada, Hiroki Furue, Yusuke Aikawa, Kazuhide Fukushima

Proceedings of the Information Security - 27th International Conference, 2024

2023

Towards Practical Doubly-Efficient Private Information Retrieval.

Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert

IACR Cryptol. ePrint Arch., 2023

Homomorphic polynomial evaluation using Galois structure and applications to BFV bootstrapping.

Hiroki Okada, Rachel Player, Simon Pohmann

IACR Cryptol. ePrint Arch., 2023

Spherical Gaussian Leftover Hash Lemma via the Rényi Divergence.

Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2023

GPU Acceleration of High-Precision Homomorphic Computation Utilizing Redundant Representation.

Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Takashi Nishide

IACR Cryptol. ePrint Arch., 2023

SoK: Towards CCA Secure Fully Homomorphic Encryption.

Hiroki Okada, Kazuhide Fukushima

Proceedings of the 20th International Conference on Security and Cryptography, 2023

Revisiting the DFT Test in the NIST SP 800-22 Randomness Test Suite.

Hiroki Okada, Kazuhide Fukushima

Proceedings of the 9th International Conference on Information Systems Security and Privacy, 2023

Achieving Private Verification in Multi-stakeholder Environment and Application to Stable Matching.

Toru Nakamura, Hiroki Okada, Kazuhide Fukushima, Takamasa Isohara

Proceedings of the 25th International Conference on Enterprise Information Systems, 2023

2022

Erratum: A Compact Digital Signature Scheme Based on the Module-LWR Problem [IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Vol. E104.A (2021), No. 9 pp.1219-1234].

Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

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

Side-channel Analysis and Countermeasure for Implementation of Lattice-based Signature.

Kazuhide Fukushima, Hiroki Okada, Sofiane Takarabt, Amina Korchi, Meziane Hamoud, Khaled Karray, Youssef Souissy, Sylvain Guilley

Proceedings of the 19th International Conference on Security and Cryptography, 2022

2021

Integer-Wise Functional Bootstrapping on TFHE: Applications in Secure Integer Arithmetics.

Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid

Inf., 2021

A Compact Digital Signature Scheme Based on the Module-LWR Problem.

Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021

Faster Rotation-Based Gauss Sieve for Solving the SVP on General Ideal Lattices.

Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021

A Comparison of GKE Protocols based on SIDH.

Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid

Proceedings of the 18th International Conference on Security and Cryptography, 2021

2020

On the Complexity of the LWR-Solving BKW Algorithm.

Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

Integerwise Functional Bootstrapping on TFHE.

Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid

Proceedings of the Information Security - 23rd International Conference, 2020

2018

Linear Depth Integer-Wise Homomorphic Division.

Hiroki Okada, Carlos Cid, Seira Hidano, Shinsaku Kiyomoto

Proceedings of the Information Security Theory and Practice, 2018

2017

Randomness Evaluation With the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution.

Hiroki Okada, Ken Umeno

IEEE Trans. Inf. Forensics Secur., 2017