Ryo Nojima

Publication Activity (10 Years)

Years Active: 2005-2024
Publications (10 Years): 21

Top Topics

Asynchronous Communication

Decision Tree Algorithms

Privacy Preservation

Top Venues

IACR Cryptol. ePrint Arch.

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

Publications

Ryousuke Wakabayashi, Lihua Wang, Ryo Nojima, Atsushi Waseda
Security Evaluation of Decision Tree Meets Data Anonymization. ICISSP (2024)
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
Designing a Location Trace Anonymization Contest. Proc. Priv. Enhancing Technol. 2023 (1) (2023)
Sachiko Kanamori, Hirotsune Sato, Naoya Tabata, Ryo Nojima
Construction of a Support Tool for Japanese User Reading of Privacy Policies and Assessment of its User Impact. IEICE Trans. Inf. Syst. 106 (5) (2023)
Ryo Nojima, Lihua Wang
Differential Private (Random) Decision Tree Without Adding Noise. ICONIP (9) (2023)
Kaisei Kajita, Keita Emura, Kazuto Ogawa, Ryo Nojima, Go Ohtake
Continuous Group Key Agreement with Flexible Authorization and Its Applications. IWSPA@CODASPY (2023)
Keita Emura, Kaisei Kajita, Ryo Nojima, Kazuto Ogawa, Go Ohtake
Membership Privacy for Asynchronous Group Messaging. IACR Cryptol. ePrint Arch. 2022 (2022)
Keita Emura, Kaisei Kajita, Ryo Nojima, Kazuto Ogawa, Go Ohtake
Membership Privacy for Asynchronous Group Messaging. WISA (2022)
Sachiko Kanamori, Hirotsune Sato, Naoya Tabata, Ryo Nojima
Construction of a Support Tool for User Reading of Privacy Policies and Assessment of its User Impact. ICISSP (2022)
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
Privacy-Preserving Federated Learning for Detecting Fraudulent Financial Transactions in Japanese Banks. J. Inf. Process. 30 (2022)
Keita Emura, Kaisei Kajita, Ryo Nojima, Kazuto Ogawa, Go Ohtake
Providing Membership Privacy to the Asynchronous Ratcheting Trees Protocol without losing Scalability. J. Wirel. Mob. Networks Ubiquitous Comput. Dependable Appl. 13 (4) (2022)
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption. ICEIS (2) (2022)
Kaisei Kajita, Keita Emura, Kazuto Ogawa, Ryo Nojima, Go Ohtake
Continuous Group Key Agreement with Flexible Authorization and Its Applications. IACR Cryptol. ePrint Arch. 2022 (2022)
Yoshinori Aono, Sitong Liu, Tomoki Tanaka, Shumpei Uno, Rodney Van Meter, Naoyuki Shinohara, Ryo Nojima
The Present and Future of Discrete Logarithm Problems on Noisy Quantum Computers. CoRR (2021)
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption. IACR Cryptol. ePrint Arch. 2021 (2021)
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
Designing a Location Trace Anonymization Contest. CoRR (2021)
Atsushi Waseda, Ryo Nojima
On Limitation of Plausible Deniability. IWSEC (2020)
Ryo Nojima, Hidenobu Oguri, Hiroaki Kikuchi, Hiroshi Nakagawa, Koki Hamada, Takao Murakami, Yuji Yamaoka, Chiemi Watanabe
How to Handle Excessively Anonymized Datasets. J. Inf. Process. 26 (2018)
Mikio Fujiwara, Atsushi Waseda, Ryo Nojima, Shiho Moriai, Wakaha Ogata, Masahide Sasaki
Unbreakable distributed storage with quantum key distribution network and password-authenticated secret sharing. CoRR (2016)
Sachiko Kanamori, Ryo Nojima, Hirotsune Sato, Naoya Tabata, Kanako Kawaguchi, Hirohiko Suwa, Atsushi Iwai
How does the willingness to provide private information change? ISITA (2016)
Atsushi Waseda, Ryo Nojima
Analyzing Randomized Response Mechanisms Under Differential Privacy. ISC (2016)
Takashi Kurokawa, Ryo Nojima, Shiho Moriai
On the security of CBC Mode in SSL3.0 and TLS1.0. J. Internet Serv. Inf. Secur. 6 (1) (2016)
Lihua Wang, Takuya Hayashi, Sachiko Kanamori, Atsushi Waseda, Ryo Nojima, Shiho Moriai
POSTER: PRINCESS: A Secure Cloud File Storage System for Managing Data with Hierarchical Levels of Sensitivity. CCS (2015)
Takashi Kurokawa, Ryo Nojima, Shiho Moriai
Can We Securely Use CBC Mode in TLS1.0? ICT-EurAsia/CONFENIS (2015)
Lihua Wang, Ryo Nojima, Shiho Moriai
A Secure Automobile Information Sharing System. IoTPTS@AsiaCCS (2015)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Generic Fully Simulatable Adaptive Oblivious Transfer. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2015)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Relation between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2014)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
UC-Secure Multi-Session OT Using Tamper-Proof Hardware. IACR Cryptol. ePrint Arch. 2013 (2013)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
New leakage-resilient CCA-secure public key encryption. J. Math. Cryptol. 7 (4) (2013)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
New Leakage Resilient CCA-Secure Public Key Encryption. IACR Cryptol. ePrint Arch. 2012 (2012)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Relation between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions. ACISP (2012)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Relation between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions. IACR Cryptol. ePrint Arch. 2012 (2012)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Generic Fully Simulatable Adaptive Oblivious Transfer. ACNS (2011)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Generic Fully Simulatable Adaptive Oblivious Transfer. IACR Cryptol. ePrint Arch. 2011 (2011)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption. IACR Cryptol. ePrint Arch. 2010 (2010)
Kaoru Kurosawa, Ryo Nojima, Le Trieu Phong
Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption. SCN (2010)
Kaoru Kurosawa, Ryo Nojima
Simple Adaptive Oblivious Transfer Without Random Oracle. IACR Cryptol. ePrint Arch. 2009 (2009)
Kaoru Kurosawa, Ryo Nojima
Simple Adaptive Oblivious Transfer without Random Oracle. ASIACRYPT (2009)
Ryo Nojima, Youki Kadobayashi
Cryptographically Secure Bloom-Filters. Trans. Data Priv. 2 (2) (2009)
Ryo Nojima, Jin Tamura, Youki Kadobayashi, Hiroaki Kikuchi
A Storage Efficient Redactable Signature in the Standard Model. ISC (2009)
Ryo Nojima, Hideki Imai, Kazukuni Kobara, Kirill Morozov
Semantic security for the McEliece cryptosystem without random oracles. Des. Codes Cryptogr. 49 (1-3) (2008)
Ryo Nojima, Kazukuni Kobara, Hideki Imai
Efficient Shared-Key Authentication Scheme from Any Weak Pseudorandom Function. INDOCRYPT (2006)
Ryo Nojima, Yuichi Kaji
Secure, Efficient and Practical Key Management Scheme in the Complete-Subtree Method. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2005)
Ryo Nojima, Yuichi Kaji
Using Trapdoor Permutations in a Complete Subtree Method for Broadcast Encryption. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2) (2005)