A Framework for Constructing Convertible Undeniable Signatures. - Ryo Kikuchi; Le Trieu Phong; Wakaha Ogata (ProvSec, 2010)

Strong Security Notions for Timed-Release Public-Key Encryption Revisited. - Ryo Kikuchi; Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (ICISC, 2011)

Practically Efficient Multi-party Sorting Protocols from Comparison Sort Algorithms. - Koki Hamada; Ryo Kikuchi; Dai Ikarashi; Koji Chida; Katsumi Takahashi (ICISC, 2012)

Secret Sharing Schemes with Conversion Protocol to Achieve Short Share-Size and Extendibility to Multiparty Computation. - Ryo Kikuchi; Koji Chida; Dai Ikarashi; Koki Hamada; Katsumi Takahashi (ACISP, 2013)

Actively Private and Correct MPC Scheme in t<n/2 from Passively Secure Schemes with Small Overhead. - Dai Ikarashi; Ryo Kikuchi; Koki Hamada; Koji Chida (IACR Cryptol. ePrint Arch., 2014)

Practical Password-Based Authentication Protocol for Secret Sharing Based Multiparty Computation. - Ryo Kikuchi; Koji Chida; Dai Ikarashi; Koki Hamada (CANS, 2015)

Implementation and evaluation of a combined optimization scheme for routing and channel assignment in wireless mesh networks. - Ryo Kikuchi; Kohei Hosaki; Mikio Hasegawa (CCNC, 2015)

k-Anonymous Microdata Release via Post Randomisation Method. - Dai Ikarashi; Ryo Kikuchi; Koji Chida; Katsumi Takahashi (IWSEC, 2015)

Secret Sharing with Share-Conversion: Achieving Small Share-Size and Extendibility to Multiparty Computation. - Ryo Kikuchi; Koji Chida; Dai Ikarashi; Wakaha Ogata; Koki Hamada; Katsumi Takahashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Adaptively and Unconditionally Secure Conversion Protocols between Ramp and Linear Secret Sharing. - Ryo Kikuchi; Dai Ikarashi; Koki Hamada; Koji Chida (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Evaluation of Secure Computation in a Distributed Healthcare Setting. - Eizen Kimura; Koki Hamada; Ryo Kikuchi; Koji Chida; Kazuya Okamoto; Shirou Manabe; Tomohiro Kuroda; Yasushi Matsumura; Toshihiro Takeda; Naoki Mihara (MIE, 2016)

Garbling Scheme for Formulas with Constant Size of Garbled Gates. - Carmen Kempka; Ryo Kikuchi; Susumu Kiyoshima; Koutarou Suzuki (IACR Cryptol. ePrint Arch., 2016)

Cryptanalysis of Comparable Encryption in SIGMOD'16. - Caleb Horst; Ryo Kikuchi; Keita Xagawa (SIGMOD Conference, 2017)

How to Circumvent the Two-Ciphertext Lower Bound for Linear Garbling Schemes. - Carmen Kempka; Ryo Kikuchi; Koutarou Suzuki (IACR Cryptol. ePrint Arch., 2017)

Computational SS and conversion protocols in both active and passive settings. - Ryo Kikuchi; Dai Ikarashi; Koji Chida; Koki Hamada; Wakaha Ogata (IET Inf. Secur., 2017)

High-Throughput Secure AES Computation. - Koji Chida; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Benny Pinkas (WAHC@CCS, 2018)

Comparative Study of the Effectiveness of Perturbative Methods for Creating Official Microdata in Japan. - Shinsuke Ito; Toru Yoshitake; Ryo Kikuchi; Fumika Akutsu (PSD, 2018)

Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority. - Ryo Kikuchi; Dai Ikarashi; Takahiro Matsuda 002; Koki Hamada; Koji Chida (IACR Cryptol. ePrint Arch., 2018)

Password-Based Authentication Protocol for Secret-Sharing-Based Multiparty Computation. - Ryo Kikuchi; Koji Chida; Dai Ikarashi; Koki Hamada (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

Efficient Secure Multi-Party Protocols for Decision Tree Classification. - Atsunori Ichikawa; Wakaha Ogata; Koki Hamada; Ryo Kikuchi (ACISP, 2019)

Optimization Method for Controller Parameters Using Support Vector Machine. - Toshiki Saito; Ryo Kikuchi; Takenori Atsumi (ICIT, 2019)

An Efficient Secure Three-Party Sorting Protocol with an Honest Majority. - Koji Chida; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Naoto Kiribuchi; Benny Pinkas (IACR Cryptol. ePrint Arch., 2019)

Field Extension in Secret-Shared Form and Its Applications to Efficient Secure Computation. - Ryo Kikuchi; Nuttapong Attrapadung; Koki Hamada; Dai Ikarashi; Ai Ishida; Takahiro Matsuda 002; Yusuke Sakai 001; Jacob C. N. Schuldt (IACR Cryptol. ePrint Arch., 2019)

Efficient Secure Three-Party Sorting with Applications to Data Analysis and Heavy Hitters. - Gilad Asharov; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Ariel Nof; Benny Pinkas; Katsumi Takahashi; Junichi Tomida (IACR Cryptol. ePrint Arch., 2022)

Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation. - Nuttapong Attrapadung; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Takahiro Matsuda 002; Ibuki Mishina; Hiraku Morita; Jacob C. N. Schuldt (Proc. Priv. Enhancing Technol., 2022)

Secure Statistical Analysis on Multiple Datasets: Join and Group-By. - Gilad Asharov; Koki Hamada; Ryo Kikuchi; Ariel Nof; Benny Pinkas; Junichi Tomida (CCS, 2023)

Polyp Size and Shape Estimation by Using an Endoscopic Hood Information. - Ryo Kikuchi; Yuji Iwahori; Kenji Funahashi; Manas Kamal Bhuyan; Aili Wang 001; Naotaka Ogasawara; Kunio Kasugai (KES, 2023)

3-Party Secure Computation for RAMs: Optimal and Concretely Efficient. - Atsunori Ichikawa; Ilan Komargodski; Koki Hamada; Ryo Kikuchi; Dai Ikarashi (IACR Cryptol. ePrint Arch., 2023)

Efficient decision tree training with new data structure for secure multi-party computation. - Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Koji Chida (Proc. Priv. Enhancing Technol., 2023)

Fast Large-Scale Honest-Majority MPC for Malicious Adversaries. - Koji Chida; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Daniel Genkin; Yehuda Lindell; Ariel Nof (J. Cryptol., 2023)

Secure Statistical Analysis on Multiple Datasets: Join and Group-By. - Gilad Asharov; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Ariel Nof; Benny Pinkas; Junichi Tomida (IACR Cryptol. ePrint Arch., 2024)