Takuya Hayashi

43 papers A* 1A 3B 1C 3Misc 1Journal 21Unranked 13
YearRankTypeTitle / Venue / Authors
2026 J jnl
Multi-Key Homomorphic Encryption with Threshold Re-Encryption via (Replicated) Additive Secret Sharing.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Akira Nakashima, Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Kengo Mori, Toshiyuki Isshiki
2024 — conf
Faster Homomorphic Evaluation of Arbitrary Bivariate Integer Functions via Homomorphic Linear Transformation.
WAHC@CCS
Akira Nakashima, Takuya Hayashi, Hikaru Tsuchida, Yukimasa Sugizaki, Kengo Mori, Takashi Nishide
2024 — conf
Multi-key Homomorphic Encryption with Threshold Re-encryption.
SAC (1)
Akira Nakashima, Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Kengo Mori, Toshiyuki Isshiki
2023 — conf
Threshold Fully Homomorphic Encryption Over the Torus.
ESORICS (1)
Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori
2021 J jnl
Privacy-Preserving Data Analysis: Providing Traceability without Big Brother.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Hiromi Arai, Keita Emura, Takuya Hayashi
2021 J jnl
Virtual Vault: A Practical Leakage Resilient Scheme Using Space-Hard Ciphers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuji Koike, Takuya Hayashi, Jun Kurihara, Takanori Isobe
2020 J jnl
A Revocable Group Signature Scheme with Scalability from Simple Assumptions.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Keita Emura, Takuya Hayashi
2020 Misc conf
Galaxy: A Family of Stream-Cipher-Based Space-Hard Ciphers.
ACISP
Yuji Koike, Kosei Sakamoto, Takuya Hayashi, Takanori Isobe
2020 J jnl
Group Signatures with Time-Bound Keys Revisited: A New Model, an Efficient Construction, and its Implementation.
IEEE Trans. Dependable Secur. Comput.
Keita Emura, Takuya Hayashi, Ai Ishida
2019 — conf
A Fast Privacy-Preserving Multi-Layer Perceptron Using Ring-LWE-Based Homomorphic Encryption.
ICDM Workshops
Takehiro Tezuka, Lihua Wang, Takuya Hayashi, Seiichi Ozawa
2019 J jnl
A Revocable Group Signature Scheme with Scalability from Simple Assumptions and Its Application to Identity Management.
IACR Cryptol. ePrint Arch.
Keita Emura, Takuya Hayashi
2018 C conf
A Revocable Group Signature Scheme with Scalability from Simple Assumptions and Its Implementation.
ISC
Keita Emura, Takuya Hayashi
2018 J jnl
Efficient Homomorphic Encryption with Key Rotation and Security Update.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2018 J jnl
Privacy-Preserving Deep Learning via Additively Homomorphic Encryption.
IEEE Trans. Inf. Forensics Secur.
Le Trieu Phong, Yoshinori Aono, Takuya Hayashi, Lihua Wang, Shiho Moriai
2018 — conf
Privacy-Preserving Naive Bayes Classification Using Fully Homomorphic Encryption.
ICONIP (4)
Sangwook Kim, Masahiro Omori, Takuya Hayashi, Toshiaki Omori, Lihua Wang, Seiichi Ozawa
2018 J jnl
Road-to-Vehicle Communications With Time-Dependent Anonymity: A Lightweight Construction and Its Experimental Results.
IEEE Trans. Veh. Technol.
Keita Emura, Takuya Hayashi
2017 — conf
A Framework of Privacy Preserving Anomaly Detection: Providing Traceability without Big Brother.
WPES@CCS
Hiromi Arai, Keita Emura, Takuya Hayashi
2017 B conf
A Generic yet Efficient Method for Secure Inner Product.
NSS
Lihua Wang, Takuya Hayashi, Yoshinori Aono, Le Trieu Phong
2017 — conf
Efficient Key-Rotatable and Security-Updatable Homomorphic Encryption.
SCC@AsiaCCS
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2017 A conf
Group Signatures with Time-bound Keys Revisited: A New Model and an Efficient Construction.
AsiaCCS
Keita Emura, Takuya Hayashi, Ai Ishida
2017 J jnl
Input and Output Privacy-Preserving Linear Regression.
IEICE Trans. Inf. Syst.
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2017 A conf
Mis-operation Resistant Searchable Homomorphic Encryption.
AsiaCCS
Keita Emura, Takuya Hayashi, Noboru Kunihiro, Jun Sakuma
2017 — conf
Privacy preserving extreme learning machine using additively homomorphic encryption.
SSCI
Shohei Kuri, Takuya Hayashi, Toshiaki Omori, Seiichi Ozawa, Yoshinori Aono, Le Trieu Phong, Lihua Wang, Shiho Moriai
2017 J jnl
Privacy-Preserving Deep Learning via Additively Homomorphic Encryption.
IACR Cryptol. ePrint Arch.
Le Trieu Phong, Yoshinori Aono, Takuya Hayashi, Lihua Wang, Shiho Moriai
2017 — conf
Privacy-Preserving Deep Learning: Revisited and Enhanced.
ATIS
Le Trieu Phong, Yoshinori Aono, Takuya Hayashi, Lihua Wang, Shiho Moriai
2016 — conf
Improved Progressive BKZ Algorithms and Their Precise Cost Estimation by Sharp Simulator.
EUROCRYPT (1)
Yoshinori Aono, Yuntao Wang, Takuya Hayashi, Tsuyoshi Takagi
2016 J jnl
Improved Progressive BKZ Algorithms and their Precise Cost Estimation by Sharp Simulator.
IACR Cryptol. ePrint Arch.
Yoshinori Aono, Yuntao Wang, Takuya Hayashi, Tsuyoshi Takagi
2016 J jnl
Privacy-Preserving Logistic Regression with Distributed Data Sources via Homomorphic Encryption.
IEICE Trans. Inf. Syst.
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2016 — conf
Scalable and Secure Logistic Regression via Homomorphic Encryption.
CODASPY
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2016 J jnl
Scalable and Secure Logistic Regression via Homomorphic Encryption.
IACR Cryptol. ePrint Arch.
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2016 C conf
Toward securing tire pressure monitoring systems: A case of PRESENT-based implementation.
ISITA
Keita Emura, Takuya Hayashi, Shiho Moriai
2015 — conf
A Light-Weight Group Signature Scheme with Time-Token Dependent Linking.
LightSec
Keita Emura, Takuya Hayashi
2015 J jnl
Fast and Secure Linear Regression and Biometric Authentication with Security Update.
IACR Cryptol. ePrint Arch.
Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang
2015 A* conf
POSTER: PRINCESS: A Secure Cloud File Storage System for Managing Data with Hierarchical Levels of Sensitivity.
CCS
Lihua Wang, Takuya Hayashi, Sachiko Kanamori, Atsushi Waseda, Ryo Nojima, Shiho Moriai
2014 J jnl
Key Length Estimation of Pairing-Based Cryptosystems Using
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2014 J jnl
Road-to-Vehicle Communications with Time-Dependent Anonymity: A Light Weight Construction and its Experimental Results.
IACR Cryptol. ePrint Arch.
Keita Emura, Takuya Hayashi
2012 A conf
Breaking Pairing-Based Cryptosystems Using η T Pairing over GF(397).
ASIACRYPT
Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012 J jnl
Breaking pairing-based cryptosystems using η
IACR Cryptol. ePrint Arch.
Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012 C conf
Key Length Estimation of Pairing-Based Cryptosystems Using η T Pairing.
ISPEC
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012 J jnl
Key Length Estimation of Pairing-based Cryptosystems using η
IACR Cryptol. ePrint Arch.
Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012 J jnl
Solving a 676-Bit Discrete Logarithm Problem in GF(3
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi
2010 — conf
Solving a 676-Bit Discrete Logarithm Problem in GF(3
Public Key Cryptography
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi
2010 J jnl
Solving a 676-bit Discrete Logarithm Problem in GF(3
IACR Cryptol. ePrint Arch.
Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi