Hiroki Okada

38 papers C 7Misc 2Journal 19Unranked 10
YearRankTypeTitle / Venue / Authors
2025 J jnl
Fheanor: a new, modular FHE library for designing and optimising schemes.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Rachel Player, Simon Pohmann
2025 — conf
Gram Root Decomposition over the Polynomial Ring: Application to Sphericalization of Discrete Gaussian.
ICISSP (2)
Hiroki Okada, Tsuyoshi Takagi
2025 — conf
Low Communication Threshold FHE from Standard (Module-)LWE.
ASIACRYPT (7)
Hiroki Okada, Tsuyoshi Takagi
2025 J jnl
Low Communication Threshold FHE from Standard (Module-)LWE.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Tsuyoshi Takagi
2025 — conf
On Algebraic Homomorphic Encryption and Its Applications to Doubly-Efficient PIR.
EUROCRYPT (6)
Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert
2025 Misc conf
Refined Analysis of the Concrete Hardness of the Quasi-Cyclic Syndrome Decoding.
IWSEC
Shintaro Narisada, Hiroki Okada, Yusuke Aikawa, Kazuhide Fukushima
2024 J jnl
On Algebraic Homomorphic Encryption and its Applications to Doubly-Efficient PIR.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert
2024 J jnl
Private Verification in Multi-stakeholder Environment and its Application to Stable Matching.
SN Comput. Sci.
Toru Nakamura, Hiroki Okada, Kazuhide Fukushima, Takamasa Isohara
2024 J jnl
Revisiting the May-Meurer-Thomae Algorithm - Solving McEliece-1409 in One Day.
IACR Cryptol. ePrint Arch.
Shintaro Narisada, Shusaku Uemura, Hiroki Okada, Hiroki Furue, Yusuke Aikawa, Kazuhide Fukushima
2024 J jnl
Simulation-Secure Threshold PKE from Standard (Ring-)LWE.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Tsuyoshi Takagi
2024 — conf
Solving McEliece-1409 in One Day - Cryptanalysis with the Improved BJMM Algorithm.
ISC (2)
Shintaro Narisada, Shusaku Uemura, Hiroki Okada, Hiroki Furue, Yusuke Aikawa, Kazuhide Fukushima
2024 — conf
Time-Memory Trade-off Algorithms for Homomorphically Evaluating Look-up Table in TFHE.
WAHC@CCS
Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Takashi Nishide
2024 J jnl
Time-Memory Trade-off Algorithms for Homomorphically Evaluating Look-up Table in TFHE.
IACR Cryptol. ePrint Arch.
Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Takashi Nishide
2024 — conf
Towards Practical Doubly-Efficient Private Information Retrieval.
FC (2)
Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert
2023 — conf
Achieving Private Verification in Multi-stakeholder Environment and Application to Stable Matching.
ICEIS (1)
Toru Nakamura, Hiroki Okada, Kazuhide Fukushima, Takamasa Isohara
2023 — conf
GPU Acceleration of High-Precision Homomorphic Computation Utilizing Redundant Representation.
WAHC@CCS
Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Takashi Nishide
2023 J jnl
GPU Acceleration of High-Precision Homomorphic Computation Utilizing Redundant Representation.
IACR Cryptol. ePrint Arch.
Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Takashi Nishide
2023 — conf
Homomorphic Polynomial Evaluation Using Galois Structure and Applications to BFV Bootstrapping.
ASIACRYPT (6)
Hiroki Okada, Rachel Player, Simon Pohmann
2023 J jnl
Homomorphic polynomial evaluation using Galois structure and applications to BFV bootstrapping.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Rachel Player, Simon Pohmann
2023 C conf
Revisiting the DFT Test in the NIST SP 800-22 Randomness Test Suite.
ICISSP
Hiroki Okada, Kazuhide Fukushima
2023 C conf
SoK: Towards CCA Secure Fully Homomorphic Encryption.
SECRYPT
Hiroki Okada, Kazuhide Fukushima
2023 — conf
Spherical Gaussian Leftover Hash Lemma via the Rényi Divergence.
ACNS (1)
Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2023 J jnl
Spherical Gaussian Leftover Hash Lemma via the Rényi Divergence.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2023 J jnl
Towards Practical Doubly-Efficient Private Information Retrieval.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Rachel Player, Simon Pohmann, Christian Weinert
2022 J jnl
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].
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2022 C conf
Side-channel Analysis and Countermeasure for Implementation of Lattice-based Signature.
SECRYPT
Kazuhide Fukushima, Hiroki Okada, Sofiane Takarabt, Amina Korchi, Meziane Hamoud, Khaled Karray, Youssef Souissy, Sylvain Guilley
2021 J jnl
A Compact Digital Signature Scheme Based on the Module-LWR Problem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2021 J jnl
A Compact Digital Signature Scheme Based on the Module-LWR problem.
IACR Cryptol. ePrint Arch.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2021 C conf
A Comparison of GKE Protocols based on SIDH.
SECRYPT
Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid
2021 J jnl
Faster Rotation-Based Gauss Sieve for Solving the SVP on General Ideal Lattices.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shintaro Narisada, Hiroki Okada, Kazuhide Fukushima, Shinsaku Kiyomoto
2021 J jnl
Integer-Wise Functional Bootstrapping on TFHE: Applications in Secure Integer Arithmetics.
Inf.
Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid
2020 C conf
A Compact Digital Signature Scheme Based on the Module-LWR Problem.
ICICS
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2020 C conf
Integerwise Functional Bootstrapping on TFHE.
ISC
Hiroki Okada, Shinsaku Kiyomoto, Carlos Cid
2020 J jnl
On the Complexity of the LWR-Solving BKW Algorithm.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2018 C conf
Linear Depth Integer-Wise Homomorphic Division.
WISTP
Hiroki Okada, Carlos Cid, Seira Hidano, Shinsaku Kiyomoto
2018 Misc conf
On the Complexity of the LWR-Solving BKW Algorithm.
ICISC
Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi
2017 J jnl
Randomness Evaluation With the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution.
IEEE Trans. Inf. Forensics Secur.
Hiroki Okada, Ken Umeno
2017 J jnl
Randomness Evaluation with the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution.
CoRR
Hiroki Okada, Ken Umeno