Secure, Efficient and Practical Key Management Scheme in the Complete-Subtree Method. - Ryo Nojima; Yuichi Kaji (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Using Trapdoor Permutations in a Complete Subtree Method for Broadcast Encryption. - Ryo Nojima; Yuichi Kaji (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Efficient Shared-Key Authentication Scheme from Any Weak Pseudorandom Function. - Ryo Nojima; Kazukuni Kobara; Hideki Imai (INDOCRYPT, 2006)

Semantic security for the McEliece cryptosystem without random oracles. - Ryo Nojima; Hideki Imai; Kazukuni Kobara; Kirill Morozov (Des. Codes Cryptogr., 2008)

A Storage Efficient Redactable Signature in the Standard Model. - Ryo Nojima; Jin Tamura; Youki Kadobayashi; Hiroaki Kikuchi (ISC, 2009)

Simple Adaptive Oblivious Transfer Without Random Oracle. - Kaoru Kurosawa; Ryo Nojima (IACR Cryptol. ePrint Arch., 2009)

Cryptographically Secure Bloom-Filters. - Ryo Nojima; Youki Kadobayashi (Trans. Data Priv., 2009)

Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption. - Kaoru Kurosawa; Ryo Nojima; Le Trieu Phong (IACR Cryptol. ePrint Arch., 2010)

UC-Secure Multi-Session OT Using Tamper-Proof Hardware. - Kaoru Kurosawa; Ryo Nojima; Le Trieu Phong (IACR Cryptol. ePrint Arch., 2013)

New leakage-resilient CCA-secure public key encryption. - Kaoru Kurosawa; Ryo Nojima; Le Trieu Phong (J. Math. Cryptol., 2013)

Relation between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions. - Kaoru Kurosawa; Ryo Nojima; Le Trieu Phong (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

POSTER: PRINCESS: A Secure Cloud File Storage System for Managing Data with Hierarchical Levels of Sensitivity. - Lihua Wang 001; Takuya Hayashi 001; Sachiko Kanamori; Atsushi Waseda; Ryo Nojima; Shiho Moriai (CCS, 2015)

A Secure Automobile Information Sharing System. - Lihua Wang 001; Ryo Nojima; Shiho Moriai (IoTPTS@AsiaCCS, 2015)

Can We Securely Use CBC Mode in TLS1.0? - Takashi Kurokawa 001; Ryo Nojima; Shiho Moriai (ICT-EurAsia/CONFENIS, 2015)

Generic Fully Simulatable Adaptive Oblivious Transfer. - Kaoru Kurosawa; Ryo Nojima; Le Trieu Phong (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

How does the willingness to provide private information change? - Sachiko Kanamori; Ryo Nojima; Hirotsune Sato; Naoya Tabata; Kanako Kawaguchi; Hirohiko Suwa; Atsushi Iwai (ISITA, 2016)

Analyzing Randomized Response Mechanisms Under Differential Privacy. - Atsushi Waseda; Ryo Nojima (ISC, 2016)

Unbreakable distributed storage with quantum key distribution network and password-authenticated secret sharing. - Mikio Fujiwara; Atsushi Waseda; Ryo Nojima; Shiho Moriai; Wakaha Ogata; Masahide Sasaki (CoRR, 2016)

On the security of CBC Mode in SSL3.0 and TLS1.0. - Takashi Kurokawa 001; Ryo Nojima; Shiho Moriai (J. Internet Serv. Inf. Secur., 2016)

How to Handle Excessively Anonymized Datasets. - Ryo Nojima; Hidenobu Oguri; Hiroaki Kikuchi; Hiroshi Nakagawa; Koki Hamada; Takao Murakami; Yuji Yamaoka; Chiemi Watanabe (J. Inf. Process., 2018)

On Limitation of Plausible Deniability. - Atsushi Waseda; Ryo Nojima (IWSEC, 2020)

The Present and Future of Discrete Logarithm Problems on Noisy Quantum Computers. - Yoshinori Aono; Sitong Liu; Tomoki Tanaka; Shumpei Uno; Rodney Van Meter; Naoyuki Shinohara; Ryo Nojima (CoRR, 2021)

State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption. - Keita Emura; Ryoma Ito 001; Sachiko Kanamori; Ryo Nojima; Yohei Watanabe 001 (IACR Cryptol. ePrint Arch., 2021)

Construction of a Support Tool for User Reading of Privacy Policies and Assessment of its User Impact. - Sachiko Kanamori; Hirotsune Sato; Naoya Tabata; Ryo Nojima (ICISSP, 2022)

Membership Privacy for Asynchronous Group Messaging. - Keita Emura; Kaisei Kajita; Ryo Nojima; Kazuto Ogawa; Go Ohtake (IACR Cryptol. ePrint Arch., 2022)

Continuous Group Key Agreement with Flexible Authorization and Its Applications. - Kaisei Kajita; Keita Emura; Kazuto Ogawa; Ryo Nojima; Go Ohtake (IACR Cryptol. ePrint Arch., 2022)

Privacy-Preserving Federated Learning for Detecting Fraudulent Financial Transactions in Japanese Banks. - Sachiko Kanamori; Taeko Abe; Takuma Ito; Keita Emura; Lihua Wang 001; Shuntaro Yamamoto; Le Trieu Phong; Kaien Abe; Sangwook Kim; Ryo Nojima; Seiichi Ozawa; Shiho Moriai (J. Inf. Process., 2022)

Providing Membership Privacy to the Asynchronous Ratcheting Trees Protocol without losing Scalability. - Keita Emura; Kaisei Kajita; Ryo Nojima; Kazuto Ogawa; Go Ohtake (J. Wirel. Mob. Networks Ubiquitous Comput. Dependable Appl., 2022)

Differential Private (Random) Decision Tree Without Adding Noise. - Ryo Nojima; Lihua Wang 001 (ICONIP (9), 2023)

Designing a Location Trace Anonymization Contest. - Takao Murakami; Hiromi Arai; Koki Hamada; Takuma Hatano; Makoto Iguchi; Hiroaki Kikuchi; Atsushi Kuromasa; Hiroshi Nakagawa; Yuichi Nakamura 004; Kenshiro Nishiyama; Ryo Nojima; Hidenobu Oguri; et al. (Proc. Priv. Enhancing Technol., 2023)

Construction of a Support Tool for Japanese User Reading of Privacy Policies and Assessment of its User Impact. - Sachiko Kanamori; Hirotsune Sato; Naoya Tabata; Ryo Nojima (IEICE Trans. Inf. Syst., 2023)

Security Evaluation of Decision Tree Meets Data Anonymization. - Ryousuke Wakabayashi; Lihua Wang 001; Ryo Nojima; Atsushi Waseda (ICISSP, 2024)

Simple Privacy-Preserving Federated Learning with Different Encryption Keys. - Haruto Yokomitsu; Ryo Nojima; Lihua Wang 001 (ISITA, 2024)