Takuya Hayashi

According to our database, Takuya Hayashi authored at least 37 papers between 2010 and 2024.

Collaborative distances:

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

2024

Faster Homomorphic Evaluation of Arbitrary Bivariate Integer Functions via Homomorphic Linear Transformation.

Akira Nakashima, Takuya Hayashi, Hikaru Tsuchida, Yukimasa Sugizaki, Kengo Mori, Takashi Nishide

Proceedings of the 12th Workshop on Encrypted Computing & Applied Homomorphic Cryptography, 2024

2023

Threshold Fully Homomorphic Encryption Over the Torus.

Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori

Proceedings of the Computer Security - ESORICS 2023, 2023

2021

Virtual Vault: A Practical Leakage Resilient Scheme Using Space-Hard Ciphers.

Yuji Koike, Takuya Hayashi, Jun Kurihara, Takanori Isobe

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

Privacy-Preserving Data Analysis: Providing Traceability without Big Brother.

Hiromi Arai, Keita Emura, Takuya Hayashi

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

2020

Group Signatures with Time-Bound Keys Revisited: A New Model, an Efficient Construction, and its Implementation.

Keita Emura, Takuya Hayashi, Ai Ishida

IEEE Trans. Dependable Secur. Comput., 2020

A Revocable Group Signature Scheme with Scalability from Simple Assumptions.

Keita Emura, Takuya Hayashi

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

Galaxy: A Family of Stream-Cipher-Based Space-Hard Ciphers.

Yuji Koike, Kosei Sakamoto, Takuya Hayashi, Takanori Isobe

Proceedings of the Information Security and Privacy - 25th Australasian Conference, 2020

2019

A Revocable Group Signature Scheme with Scalability from Simple Assumptions and Its Application to Identity Management.

Keita Emura, Takuya Hayashi

IACR Cryptol. ePrint Arch., 2019

A Fast Privacy-Preserving Multi-Layer Perceptron Using Ring-LWE-Based Homomorphic Encryption.

Takehiro Tezuka, Lihua Wang, Takuya Hayashi, Seiichi Ozawa

Proceedings of the 2019 International Conference on Data Mining Workshops, 2019

2018

Road-to-Vehicle Communications With Time-Dependent Anonymity: A Lightweight Construction and Its Experimental Results.

Keita Emura, Takuya Hayashi

IEEE Trans. Veh. Technol., 2018

Privacy-Preserving Deep Learning via Additively Homomorphic Encryption.

Le Trieu Phong, Yoshinori Aono, Takuya Hayashi, Lihua Wang, Shiho Moriai

IEEE Trans. Inf. Forensics Secur., 2018

Efficient Homomorphic Encryption with Key Rotation and Security Update.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018

A Revocable Group Signature Scheme with Scalability from Simple Assumptions and Its Implementation.

Keita Emura, Takuya Hayashi

Proceedings of the Information Security - 21st International Conference, 2018

Privacy-Preserving Naive Bayes Classification Using Fully Homomorphic Encryption.

Sangwook Kim, Masahiro Omori, Takuya Hayashi, Toshiaki Omori, Lihua Wang, Seiichi Ozawa

Proceedings of the Neural Information Processing - 25th International Conference, 2018

2017

Input and Output Privacy-Preserving Linear Regression.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

IEICE Trans. Inf. Syst., 2017

A Framework of Privacy Preserving Anomaly Detection: Providing Traceability without Big Brother.

Hiromi Arai, Keita Emura, Takuya Hayashi

Proceedings of the 2017 on Workshop on Privacy in the Electronic Society, Dallas, TX, USA, October 30, 2017

Privacy preserving extreme learning machine using additively homomorphic encryption.

Shohei Kuri, Takuya Hayashi, Toshiaki Omori, Seiichi Ozawa, Yoshinori Aono, Le Trieu Phong, Lihua Wang, Shiho Moriai

Proceedings of the 2017 IEEE Symposium Series on Computational Intelligence, 2017

A Generic yet Efficient Method for Secure Inner Product.

Lihua Wang, Takuya Hayashi, Yoshinori Aono, Le Trieu Phong

Proceedings of the Network and System Security - 11th International Conference, 2017

Mis-operation Resistant Searchable Homomorphic Encryption.

Keita Emura, Takuya Hayashi, Noboru Kunihiro, Jun Sakuma

Proceedings of the 2017 ACM on Asia Conference on Computer and Communications Security, 2017

Group Signatures with Time-bound Keys Revisited: A New Model and an Efficient Construction.

Keita Emura, Takuya Hayashi, Ai Ishida

Proceedings of the 2017 ACM on Asia Conference on Computer and Communications Security, 2017

Efficient Key-Rotatable and Security-Updatable Homomorphic Encryption.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

Proceedings of the Fifth ACM International Workshop on Security in Cloud Computing, 2017

Privacy-Preserving Deep Learning: Revisited and Enhanced.

Le Trieu Phong, Yoshinori Aono, Takuya Hayashi, Lihua Wang, Shiho Moriai

Proceedings of the Applications and Techniques in Information Security, 2017

2016

Privacy-Preserving Logistic Regression with Distributed Data Sources via Homomorphic Encryption.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

IEICE Trans. Inf. Syst., 2016

Improved Progressive BKZ Algorithms and their Precise Cost Estimation by Sharp Simulator.

Yoshinori Aono, Yuntao Wang, Takuya Hayashi, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2016

Scalable and Secure Logistic Regression via Homomorphic Encryption.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

IACR Cryptol. ePrint Arch., 2016

Toward securing tire pressure monitoring systems: A case of PRESENT-based implementation.

Keita Emura, Takuya Hayashi, Shiho Moriai

Proceedings of the 2016 International Symposium on Information Theory and Its Applications, 2016

2015

Fast and Secure Linear Regression and Biometric Authentication with Security Update.

Yoshinori Aono, Takuya Hayashi, Le Trieu Phong, Lihua Wang

IACR Cryptol. ePrint Arch., 2015

A Light-Weight Group Signature Scheme with Time-Token Dependent Linking.

Keita Emura, Takuya Hayashi

Proceedings of the Lightweight Cryptography for Security and Privacy, 2015

POSTER: PRINCESS: A Secure Cloud File Storage System for Managing Data with Hierarchical Levels of Sensitivity.

Lihua Wang, Takuya Hayashi, Sachiko Kanamori, Atsushi Waseda, Ryo Nojima, Shiho Moriai

Proceedings of the 22nd ACM SIGSAC Conference on Computer and Communications Security, 2015

2014

Key Length Estimation of Pairing-Based Cryptosystems Using <i>η_T</i> Pairing over <i>GF</i>(3<i>ⁿ</i>).

Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014

Road-to-Vehicle Communications with Time-Dependent Anonymity: A Light Weight Construction and its Experimental Results.

Keita Emura, Takuya Hayashi

IACR Cryptol. ePrint Arch., 2014

2012

Solving a 676-Bit Discrete Logarithm Problem in GF(3^6<i>n</i>).

Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012

Key Length Estimation of Pairing-based Cryptosystems using η_T Pairing.

Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2012

Breaking pairing-based cryptosystems using η_T pairing over GF(3⁹⁷).

Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2012

Key Length Estimation of Pairing-Based Cryptosystems Using η T Pairing.

Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi

Proceedings of the Information Security Practice and Experience, 2012

Breaking Pairing-Based Cryptosystems Using η T Pairing over GF(397).

Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi

Proceedings of the Advances in Cryptology - ASIACRYPT 2012, 2012

2010

Solving a 676-bit Discrete Logarithm Problem in GF(3⁶ⁿ).

Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2010