Ryo Kikuchi

44 papers A* 2B 2C 2Misc 7Journal 22Unranked 9
YearRankTypeTitle / Venue / Authors
2026 J jnl
Validating Behavioral Proxies for Disease Risk Monitoring via Large-Scale E-commerce Data.
CoRR
Naomi Sasaya, Shigefumi Kishida, Ryo Kikuchi, Akira Tajima
2024 J jnl
Secure Statistical Analysis on Multiple Datasets: Join and Group-By.
IACR Cryptol. ePrint Arch.
Gilad Asharov, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Ariel Nof, Benny Pinkas, Junichi Tomida
2023 — conf
3-Party Secure Computation for RAMs: Optimal and Concretely Efficient.
TCC (1)
Atsunori Ichikawa, Ilan Komargodski, Koki Hamada, Ryo Kikuchi, Dai Ikarashi
2023 J jnl
3-Party Secure Computation for RAMs: Optimal and Concretely Efficient.
IACR Cryptol. ePrint Arch.
Atsunori Ichikawa, Ilan Komargodski, Koki Hamada, Ryo Kikuchi, Dai Ikarashi
2023 J jnl
Efficient decision tree training with new data structure for secure multi-party computation.
Proc. Priv. Enhancing Technol.
Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Koji Chida
2023 J jnl
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
J. Cryptol.
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Daniel Genkin, Yehuda Lindell, Ariel Nof
2023 B conf
Polyp Size and Shape Estimation by Using an Endoscopic Hood Information.
KES
Ryo Kikuchi, Yuji Iwahori, Kenji Funahashi, Manas Kamal Bhuyan, Aili Wang, Naotaka Ogasawara, Kunio Kasugai
2023 A* conf
Secure Statistical Analysis on Multiple Datasets: Join and Group-By.
CCS
Gilad Asharov, Koki Hamada, Ryo Kikuchi, Ariel Nof, Benny Pinkas, Junichi Tomida
2022 J jnl
Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation.
Proc. Priv. Enhancing Technol.
Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Takahiro Matsuda, Ibuki Mishina, Hiraku Morita, Jacob C. N. Schuldt
2022 A* conf
Efficient Secure Three-Party Sorting with Applications to Data Analysis and Heavy Hitters.
CCS
Gilad Asharov, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Ariel Nof, Benny Pinkas, Katsumi Takahashi, Junichi Tomida
2022 J jnl
Efficient Secure Three-Party Sorting with Applications to Data Analysis and Heavy Hitters.
IACR Cryptol. ePrint Arch.
Gilad Asharov, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Ariel Nof, Benny Pinkas, Katsumi Takahashi, Junichi Tomida
2021 J jnl
Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation.
CoRR
Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Takahiro Matsuda, Ibuki Mishina, Hiraku Morita, Jacob C. N. Schuldt
2021 J jnl
Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation.
IACR Cryptol. ePrint Arch.
Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Takahiro Matsuda, Ibuki Mishina, Hiraku Morita, Jacob C. N. Schuldt
2021 J jnl
Efficient decision tree training with new data structure for secure multi-party computation.
CoRR
Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Koji Chida
2019 J jnl
An Efficient Secure Three-Party Sorting Protocol with an Honest Majority.
IACR Cryptol. ePrint Arch.
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Naoto Kiribuchi, Benny Pinkas
2019 Misc conf
Efficient Secure Multi-Party Protocols for Decision Tree Classification.
ACISP
Atsunori Ichikawa, Wakaha Ogata, Koki Hamada, Ryo Kikuchi
2019 Misc conf
Field Extension in Secret-Shared Form and Its Applications to Efficient Secure Computation.
ACISP
Ryo Kikuchi, Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ai Ishida, Takahiro Matsuda, Yusuke Sakai, Jacob C. N. Schuldt
2019 J jnl
Field Extension in Secret-Shared Form and Its Applications to Efficient Secure Computation.
IACR Cryptol. ePrint Arch.
Ryo Kikuchi, Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ai Ishida, Takahiro Matsuda, Yusuke Sakai, Jacob C. N. Schuldt
2019 — conf
Optimization Method for Controller Parameters Using Support Vector Machine.
ICIT
Toshiki Saito, Ryo Kikuchi, Takenori Atsumi
2018 C conf
Comparative Study of the Effectiveness of Perturbative Methods for Creating Official Microdata in Japan.
PSD
Shinsuke Ito, Toru Yoshitake, Ryo Kikuchi, Fumika Akutsu
2018 Misc conf
Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority.
ACISP
Ryo Kikuchi, Dai Ikarashi, Takahiro Matsuda, Koki Hamada, Koji Chida
2018 J jnl
Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority.
IACR Cryptol. ePrint Arch.
Ryo Kikuchi, Dai Ikarashi, Takahiro Matsuda, Koki Hamada, Koji Chida
2018 — conf
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
CRYPTO (3)
Koji Chida, Daniel Genkin, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Yehuda Lindell, Ariel Nof
2018 J jnl
Fast Large-Scale Honest-Majority MPC for Malicious Adversaries.
IACR Cryptol. ePrint Arch.
Koji Chida, Daniel Genkin, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Yehuda Lindell, Ariel Nof
2018 — conf
High-Throughput Secure AES Computation.
WAHC@CCS
Koji Chida, Koki Hamada, Dai Ikarashi, Ryo Kikuchi, Benny Pinkas
2018 J jnl
Password-Based Authentication Protocol for Secret-Sharing-Based Multiparty Computation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada
2017 J jnl
Computational SS and conversion protocols in both active and passive settings.
IET Inf. Secur.
Ryo Kikuchi, Dai Ikarashi, Koji Chida, Koki Hamada, Wakaha Ogata
2017 — conf
Cryptanalysis of Comparable Encryption in SIGMOD'16.
SIGMOD Conference
Caleb Horst, Ryo Kikuchi, Keita Xagawa
2017 J jnl
How to Circumvent the Two-Ciphertext Lower Bound for Linear Garbling Schemes.
IACR Cryptol. ePrint Arch.
Carmen Kempka, Ryo Kikuchi, Koutarou Suzuki
2016 — conf
Evaluation of Secure Computation in a Distributed Healthcare Setting.
MIE
Eizen Kimura, Koki Hamada, Ryo Kikuchi, Koji Chida, Kazuya Okamoto, Shirou Manabe, Tomohiro Kuroda, Yasushi Matsumura, Toshihiro Takeda, Naoki Mihara
2016 J jnl
Garbling Scheme for Formulas with Constant Size of Garbled Gates.
IACR Cryptol. ePrint Arch.
Carmen Kempka, Ryo Kikuchi, Susumu Kiyoshima, Koutarou Suzuki
2016 — conf
How to Circumvent the Two-Ciphertext Lower Bound for Linear Garbling Schemes.
ASIACRYPT (2)
Carmen Kempka, Ryo Kikuchi, Koutarou Suzuki
2015 J jnl
Adaptively and Unconditionally Secure Conversion Protocols between Ramp and Linear Secret Sharing.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Dai Ikarashi, Koki Hamada, Koji Chida
2015 — conf
Garbling Scheme for Formulas with Constant Size of Garbled Gates.
ASIACRYPT (1)
Carmen Kempka, Ryo Kikuchi, Susumu Kiyoshima, Koutarou Suzuki
2015 — conf
Implementation and evaluation of a combined optimization scheme for routing and channel assignment in wireless mesh networks.
CCNC
Ryo Kikuchi, Kohei Hosaki, Mikio Hasegawa
2015 B conf
Practical Password-Based Authentication Protocol for Secret Sharing Based Multiparty Computation.
CANS
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada
2015 J jnl
Secret Sharing with Share-Conversion: Achieving Small Share-Size and Extendibility to Multiparty Computation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Wakaha Ogata, Koki Hamada, Katsumi Takahashi
2015 Misc conf
k-Anonymous Microdata Release via Post Randomisation Method.
IWSEC
Dai Ikarashi, Ryo Kikuchi, Koji Chida, Katsumi Takahashi
2015 J jnl
k-anonymous Microdata Release via Post Randomisation Method.
CoRR
Dai Ikarashi, Ryo Kikuchi, Koji Chida, Katsumi Takahashi
2014 J jnl
Actively Private and Correct MPC Scheme in t<n/2 from Passively Secure Schemes with Small Overhead.
IACR Cryptol. ePrint Arch.
Dai Ikarashi, Ryo Kikuchi, Koki Hamada, Koji Chida
2013 Misc conf
Secret Sharing Schemes with Conversion Protocol to Achieve Short Share-Size and Extendibility to Multiparty Computation.
ACISP
Ryo Kikuchi, Koji Chida, Dai Ikarashi, Koki Hamada, Katsumi Takahashi
2012 Misc conf
Practically Efficient Multi-party Sorting Protocols from Comparison Sort Algorithms.
ICISC
Koki Hamada, Ryo Kikuchi, Dai Ikarashi, Koji Chida, Katsumi Takahashi
2011 Misc conf
Strong Security Notions for Timed-Release Public-Key Encryption Revisited.
ICISC
Ryo Kikuchi, Atsushi Fujioka, Yoshiaki Okamoto, Taiichi Saito
2010 C conf
A Framework for Constructing Convertible Undeniable Signatures.
ProvSec
Ryo Kikuchi, Le Trieu Phong, Wakaha Ogata