Ryo Nojima

According to our database, Ryo Nojima authored at least 33 papers between 2005 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

Simple Privacy-Preserving Federated Learning with Different Encryption Keys.

Haruto Yokomitsu, Ryo Nojima, Lihua Wang

Proceedings of the International Symposium on Information Theory and Its Applications, 2024

Security Evaluation of Decision Tree Meets Data Anonymization.

Ryousuke Wakabayashi, Lihua Wang, Ryo Nojima, Atsushi Waseda

Proceedings of the 10th International Conference on Information Systems Security and Privacy, 2024

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., May, 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, Kenshiro Nishiyama, Ryo Nojima, Hidenobu Oguri, Chiemi Watanabe, Akira Yamada, Takayasu Yamaguchi, Yuji Yamaoka

Proc. Priv. Enhancing Technol., January, 2023

Differential Private (Random) Decision Tree Without Adding Noise.

Ryo Nojima, Lihua Wang

Proceedings of the Neural Information Processing - 30th International Conference, 2023

Continuous Group Key Agreement with Flexible Authorization and Its Applications.

Kaisei Kajita, Keita Emura, Kazuto Ogawa, Ryo Nojima, Go Ohtake

Proceedings of the 9th ACM International Workshop on Security and Privacy Analytics, 2023

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

Privacy-Preserving Federated Learning for Detecting Fraudulent Financial Transactions in Japanese Banks.

Sachiko Kanamori, Taeko Abe, Takuma Ito, Keita Emura, Lihua Wang, Shuntaro Yamamoto, Le Trieu Phong, Kaien Abe, Sangwook Kim, Ryo Nojima, Seiichi Ozawa, Shiho Moriai

J. Inf. Process., 2022

Membership Privacy for Asynchronous Group Messaging.

Keita Emura, Kaisei Kajita, Ryo Nojima, Kazuto Ogawa, Go Ohtake

Proceedings of the Information Security Applications - 23rd International Conference, 2022

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

Proceedings of the 8th International Conference on Information Systems Security and Privacy, 2022

State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption.

Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe

Proceedings of the 24th International Conference on Enterprise Information Systems, 2022

2021

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

2020

On Limitation of Plausible Deniability.

Atsushi Waseda, Ryo Nojima

Proceedings of the Advances in Information and Computer Security, 2020

2018

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

2016

On the security of CBC Mode in SSL3.0 and TLS1.0.

Takashi Kurokawa, Ryo Nojima, Shiho Moriai

J. Internet Serv. Inf. Secur., 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

Analyzing Randomized Response Mechanisms Under Differential Privacy.

Atsushi Waseda, Ryo Nojima

Proceedings of the Information Security - 19th International Conference, 2016

How does the willingness to provide private information change?

Sachiko Kanamori, Ryo Nojima, Hirotsune Sato, Naoya Tabata, Kanako Kawaguchi, Hirohiko Suwa, Atsushi Iwai

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

2015

Can We Securely Use CBC Mode in TLS1.0?

Takashi Kurokawa, Ryo Nojima, Shiho Moriai

Proceedings of the Information and Communication Technology, 2015

A Secure Automobile Information Sharing System.

Lihua Wang, Ryo Nojima, Shiho Moriai

Proceedings of the 1st ACM Workshop on IoT Privacy, Trust, and Security, 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

2013

UC-Secure Multi-Session OT Using Tamper-Proof Hardware.

Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong

IACR Cryptol. ePrint Arch., 2013

2012

New Leakage Resilient CCA-Secure Public Key Encryption.

Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong

IACR Cryptol. ePrint Arch., 2012

Relation between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions.

Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong

Proceedings of the Information Security and Privacy - 17th Australasian Conference, 2012

2011

Generic Fully Simulatable Adaptive Oblivious Transfer.

Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong

Proceedings of the Applied Cryptography and Network Security, 2011

2010

Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption.

Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong

Proceedings of the Security and Cryptography for Networks, 7th International Conference, 2010

2009

Cryptographically Secure Bloom-Filters.

Ryo Nojima, Youki Kadobayashi

Trans. Data Priv., 2009

A Storage Efficient Redactable Signature in the Standard Model.

Ryo Nojima, Jin Tamura, Youki Kadobayashi, Hiroaki Kikuchi

Proceedings of the Information Security, 12th International Conference, 2009

Simple Adaptive Oblivious Transfer without Random Oracle.

Kaoru Kurosawa, Ryo Nojima

Proceedings of the Advances in Cryptology, 2009

2008

Semantic security for the McEliece cryptosystem without random oracles.

Ryo Nojima, Hideki Imai, Kazukuni Kobara, Kirill Morozov

Des. Codes Cryptogr., 2008

2006

Efficient Shared-Key Authentication Scheme from Any Weak Pseudorandom Function.

Ryo Nojima, Kazukuni Kobara, Hideki Imai

Proceedings of the Progress in Cryptology, 2006

2005

Using Trapdoor Permutations in a Complete Subtree Method for Broadcast Encryption.

Ryo Nojima, Yuichi Kaji

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005

Secure, Efficient and Practical Key Management Scheme in the Complete-Subtree Method.

Ryo Nojima, Yuichi Kaji

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005