Ryo Nishimaki

Most-cited papers

Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions
Masayuki Abe, Melissa Chase, B. David, M. Kohlweiss +2 more
2012Journal of Cryptology118 citations Open access
Semantic Scholar
Watermarking cryptographic capabilities
A. Cohen, J. Holmgren, Ryo Nishimaki, V. Vaikuntanathan +1 more
2016Symposium on the Theory of Computing108 citations Open access
Semantic Scholar
Tagged One-Time Signatures: Tight Security and Optimal Tag Size
Masayuki Abe, B. David, M. Kohlweiss, Ryo Nishimaki +1 more
2013International Conference on Theory and Practice of Public Key Cryptography80 citations
Semantic Scholar
Re-encryption, Functional Re-encryption, and Multi-hop Re-encryption: A Framework for Achieving Obfuscation-Based Security and Instantiations from Lattices
Nishanth Chandran, Melissa Chase, Feng-Hao Liu, Ryo Nishimaki +1 more
2014International Conference on Theory and Practice of Public Key Cryptography63 citations Open access
Semantic Scholar
Anonymous Traitor Tracing: How to Embed Arbitrary Information in a Key
Ryo Nishimaki, Daniel Wichs, Mark Zhandry
2016International Conference on the Theory and Application of Cryptographic Techniques59 citations
Semantic Scholar
CCA Proxy Re-Encryption without Bilinear Maps in the Standard Model
Toshihide Matsuda, Ryo Nishimaki, Keisuke Tanaka
2010International Conference on Theory and Practice of Public Key Cryptography55 citations Open access
Semantic Scholar
From Cryptomania to Obfustopia Through Secret-Key Functional Encryption
Nir Bitansky, Ryo Nishimaki, Alain Passelègue, Daniel Wichs
2016Journal of Cryptology50 citations
Semantic Scholar
Fast, compact, and expressive attribute-based encryption
Junichi Tomida, Yuto Kawahara, Ryo Nishimaki
2020Designs, Codes and Cryptography44 citations
Semantic Scholar
Secure Software Leasing from Standard Assumptions
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2020IACR Cryptology ePrint Archive39 citations Open access
Semantic Scholar
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication
Taiga Hiroka, T. Morimae, Ryo Nishimaki, Takashi Yamakawa
2021IACR Cryptology ePrint Archive36 citations Open access
Semantic Scholar
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019IACR Cryptology ePrint Archive30 citations
Semantic Scholar
The Direction of Updatable Encryption Does Matter
Ryo Nishimaki
2021IACR Cryptology ePrint Archive29 citations
Semantic Scholar
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka, Takashi Yamakawa
2019IACR Cryptology ePrint Archive26 citations
Semantic Scholar
Key-Private Proxy Re-Encryption from Lattices, Revisited
Ryo Nishimaki, Keita Xagawa
2015IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences25 citations
Semantic Scholar
Obfuscation of Pseudo-Deterministic Quantum Circuits
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023IACR Cryptology ePrint Archive24 citations Open access
Semantic Scholar
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada +1 more
2020Journal of Cryptology24 citations
Semantic Scholar
Total synthesis of (-)-mniopetal E, a novel biologically intriguing drimane sesquiterpenoid.
Yoshikazu Suzuki, Ryo Nishimaki, M. Ishikawa, T. Murata +2 more
1999Journal of Organic Chemistry24 citations Open access
Semantic Scholar
Verifiably encrypted signatures with short keys based on the decisional linear problem and obfuscation for encrypted VES
Ryo Nishimaki, Keita Xagawa
2013Designs, Codes and Cryptography23 citations Open access
Semantic Scholar
How to Watermark Cryptographic Functions
Ryo Nishimaki
2013IACR Cryptology ePrint Archive23 citations
Semantic Scholar
Universal Proxy Re-Encryption
Nico Döttling, Ryo Nishimaki
2018IACR Cryptology ePrint Archive20 citations Open access
Semantic Scholar
Public Key Encryption with Secure Key Leasing
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada +1 more
2023IACR Cryptology ePrint Archive19 citations Open access
Semantic Scholar
Certified Everlasting Zero-Knowledge Proof for QMA
Taiga Hiroka, T. Morimae, Ryo Nishimaki, Takashi Yamakawa
2021IACR Cryptology ePrint Archive19 citations Open access
Semantic Scholar
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions
Fuyuki Kitagawa, T. Morimae, Ryo Nishimaki, Takashi Yamakawa
2023IACR Cryptology ePrint Archive18 citations Open access
Semantic Scholar
Adaptively Secure Inner Product Encryption from LWE
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020IACR Cryptology ePrint Archive18 citations
Semantic Scholar
Exploring Constructions of Compact NIZKs from Various Assumptions
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019IACR Cryptology ePrint Archive18 citations Open access
Semantic Scholar
Constrained PRFs for NC1 in Traditional Groups
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada +1 more
2018IACR Cryptology ePrint Archive18 citations
Semantic Scholar
Watermarking Cryptographic Programs Against Arbitrary Removal Strategies
Ryo Nishimaki, Daniel Wichs
2015IACR Cryptology ePrint Archive17 citations
Semantic Scholar
Obfustopia Built on Secret-Key Functional Encryption
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
2018Journal of Cryptology16 citations
Semantic Scholar
Universally composable adaptive oblivious transfer (with access control) from standard assumptions
Masayuki Abe, J. Camenisch, M. Dubovitskaya, Ryo Nishimaki
2013Digital Identity Management16 citations
Semantic Scholar
Publicly Verifiable Deletion from Minimal Assumptions
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023IACR Cryptology ePrint Archive15 citations Open access
Semantic Scholar
Robust Combiners and Universal Constructions for Quantum Cryptography
Taiga Hiroka, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023IACR Cryptology ePrint Archive14 citations
Semantic Scholar
Compact NIZKs from Standard Assumptions on Bilinear Maps
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020Journal of Cryptology14 citations
Semantic Scholar
Efficient Non-interactive Universally Composable String-Commitment Schemes
Ryo Nishimaki, E. Fujisaki, Keisuke Tanaka
2009Provable Security14 citations
Semantic Scholar
Compact Structure-Preserving Signatures with Almost Tight Security
Masayuki Abe, D. Hofheinz, Ryo Nishimaki, Miyako Ohkubo +1 more
2017Journal of Cryptology13 citations Open access
Semantic Scholar
Functional Encryption with Secure Key Leasing
Fuyuki Kitagawa, Ryo Nishimaki
2022IACR Cryptology ePrint Archive12 citations Open access
Semantic Scholar
Constrained PRFs for \mathrmNC^1 in Traditional Groups
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada +1 more
2018Annual International Cryptology Conference11 citations
Semantic Scholar
Indistinguishability Obfuscation for All Circuits from Secret-Key Functional Encryption
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
2017IACR Cryptology ePrint Archive11 citations
Semantic Scholar
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More
Taiga Hiroka, Fuyuki Kitagawa, T. Morimae, Ryo Nishimaki +2 more
2026Journal of Cryptology10 citations Open access
Semantic Scholar
Leakage-resilient Identity-based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio
Ryo Nishimaki, Takashi Yamakawa
2019IACR Cryptology ePrint Archive9 citations
Semantic Scholar
Cryptanalysis of Boyen’s attribute-based encryption scheme in TCC 2013
Shweta Agrawal, Rajarshi Biswas, Ryo Nishimaki, Keita Xagawa +2 more
2022Designs, Codes and Cryptography8 citations
Semantic Scholar
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2021IACR Cryptology ePrint Archive8 citations
Semantic Scholar
Adaptively Single-Key Secure Constrained PRFs for NC1
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada +1 more
2019IACR Cryptology ePrint Archive8 citations
Semantic Scholar
Constrained PRFs for Bit-fixing from OWFs with Constant Collusion Resistance
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada
2018IACR Cryptology ePrint Archive8 citations
Semantic Scholar
Universally Composable Identity-Based Encryption
Ryo Nishimaki, Yoshifumi Manabe, T. Okamoto
2006IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences8 citations
Semantic Scholar
Synthetic Studies of Mniopetals. Intramolecular Diels-Alder Cycloaddition Approach for Access to a Key Tricyclic Driman-type Intermediate
T. Murata, M. Ishikawa, Ryo Nishimaki, K. Tadano
19978 citations
Semantic Scholar
Watermarking PRFs against Quantum Adversaries
Fuyuki Kitagawa, Ryo Nishimaki
2022International Conference on the Theory and Application of Cryptographic Techniques7 citations Open access
Semantic Scholar
Equipping Public-Key Cryptographic Primitives with Watermarking (or: A Hole Is to Watermark)
Ryo Nishimaki
2020IACR Cryptology ePrint Archive7 citations
Semantic Scholar
A Multi-trapdoor Commitment Scheme from the RSA Assumption
Ryo Nishimaki, E. Fujisaki, Keisuke Tanaka
2010Australasian Conference on Information Security and Privacy7 citations
Semantic Scholar
Simple and Generic Constructions of Succinct Functional Encryption
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
2018Journal of Cryptology6 citations
Semantic Scholar
Generalizing Efficient Multiparty Computation
B. David, Ryo Nishimaki, Samuel Ranellucci, Alain Tapp
2015International Conference on Information Technology & Systems6 citations
Semantic Scholar