Ryo Nishimaki

Google Scholar
52 publications in security and cryptology related venues
Year
Venue
Title
2025
conf/pkc
Non-committing Identity Based Encryption: Constructions and Applications.
Rishab Goyal Fuyuki Kitagawa Venkata Koppula Ryo Nishimaki Mahesh Sreekumar Rajasree Takashi Yamakawa
2025
conf/crypto
PKE and ABE with Collusion-Resistant Secure Key Leasing.
Fuyuki Kitagawa Ryo Nishimaki Nikhil Pappu
2024
journals/joc
Compact NIZKs from Standard Assumptions on Bilinear Maps.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2024
journals/joc
Watermarking PRFs and PKE Against Quantum Adversaries.
Fuyuki Kitagawa Ryo Nishimaki
2024
conf/crypto
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions.
Fuyuki Kitagawa Tomoyuki Morimae Ryo Nishimaki Takashi Yamakawa
2024
conf/eurocrypt
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More.
Taiga Hiroka Fuyuki Kitagawa Tomoyuki Morimae Ryo Nishimaki Tapas Pal Takashi Yamakawa
2024
conf/tcc
Robust Combiners and Universal Constructions for Quantum Cryptography.
Taiga Hiroka Fuyuki Kitagawa Ryo Nishimaki Takashi Yamakawa
2023
journals/joc
Compact Structure-Preserving Signatures with Almost Tight Security.
Masayuki Abe Dennis Hofheinz Ryo Nishimaki Miyako Ohkubo Jiaxin Pan
2023
conf/eurocrypt
Public Key Encryption with Secure Key Leasing.
Shweta Agrawal Fuyuki Kitagawa Ryo Nishimaki Shota Yamada Takashi Yamakawa
2023
conf/tcc
Publicly Verifiable Deletion from Minimal Assumptions.
Fuyuki Kitagawa Ryo Nishimaki Takashi Yamakawa
2023
conf/tcc
One-Out-of-Many Unclonable Cryptography: Definitions, Constructions, and More.
Fuyuki Kitagawa Ryo Nishimaki
2022
journals/joc
Obfustopia Built on Secret-Key Functional Encryption.
Fuyuki Kitagawa Ryo Nishimaki Keisuke Tanaka
2022
conf/crypto
Certified Everlasting Zero-Knowledge Proof for QMA.
Taiga Hiroka Tomoyuki Morimae Ryo Nishimaki Takashi Yamakawa
2022
conf/pkc
KDM Security for the Fujisaki-Okamoto Transformations in the QROM.
Fuyuki Kitagawa Ryo Nishimaki
2022
conf/pkc
The Direction of Updatable Encryption Does Matter.
Ryo Nishimaki
2022
conf/eurocrypt
Watermarking PRFs Against Quantum Adversaries.
Fuyuki Kitagawa Ryo Nishimaki
2022
conf/asiacrypt
Functional Encryption with Secure Key Leasing.
Fuyuki Kitagawa Ryo Nishimaki
2022
conf/tcc
Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions.
Shweta Agrawal Fuyuki Kitagawa Anuja Modi Ryo Nishimaki Shota Yamada Takashi Yamakawa
2021
journals/joc
Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2021
journals/joc
Simple and Generic Constructions of Succinct Functional Encryption.
Fuyuki Kitagawa Ryo Nishimaki Keisuke Tanaka
2021
conf/pkc
Universal Proxy Re-Encryption.
Nico Döttling Ryo Nishimaki
2021
conf/eurocrypt
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2021
conf/asiacrypt
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication.
Taiga Hiroka Tomoyuki Morimae Ryo Nishimaki Takashi Yamakawa
2021
conf/tcc
Secure Software Leasing from Standard Assumptions.
Fuyuki Kitagawa Ryo Nishimaki Takashi Yamakawa
2020
journals/joc
From Cryptomania to Obfustopia Through Secret-Key Functional Encryption.
Nir Bitansky Ryo Nishimaki Alain Passelègue Daniel Wichs
2020
conf/crypto
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model.
Alex Davidson Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2020
conf/pkc
Fast, Compact, and Expressive Attribute-Based Encryption.
Junichi Tomida Yuto Kawahara Ryo Nishimaki
2020
conf/eurocrypt
Compact NIZKs from Standard Assumptions on Bilinear Maps.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2020
conf/asiacrypt
Adaptively Secure Inner Product Encryption from LWE.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2020
conf/tcc
Equipping Public-Key Cryptographic Primitives with Watermarking (or: A Hole Is to Watermark).
Ryo Nishimaki
2019
conf/crypto
Exploring Constructions of Compact NIZKs from Various Assumptions.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2019
conf/crypto
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously.
Fuyuki Kitagawa Ryo Nishimaki Keisuke Tanaka Takashi Yamakawa
2019
conf/pkc
Adaptively Single-Key Secure Constrained PRFs for \mathrm NC^1.
Nuttapong Attrapadung Takahiro Matsuda Ryo Nishimaki Shota Yamada Takashi Yamakawa
2019
conf/pkc
Leakage-Resilient Identity-Based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio.
Ryo Nishimaki Takashi Yamakawa
2019
conf/eurocrypt
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions.
Shuichi Katsumata Ryo Nishimaki Shota Yamada Takashi Yamakawa
2018
conf/crypto
Constrained PRFs for \mathrmNC^1 in Traditional Groups.
Nuttapong Attrapadung Takahiro Matsuda Ryo Nishimaki Shota Yamada Takashi Yamakawa
2018
conf/pkc
Simple and Generic Constructions of Succinct Functional Encryption.
Fuyuki Kitagawa Ryo Nishimaki Keisuke Tanaka
2018
conf/eurocrypt
Obfustopia Built on Secret-Key Functional Encryption.
Fuyuki Kitagawa Ryo Nishimaki Keisuke Tanaka
2017
conf/crypto
Compact Structure-Preserving Signatures with Almost Tight Security.
Masayuki Abe Dennis Hofheinz Ryo Nishimaki Miyako Ohkubo Jiaxin Pan
2016
journals/joc
Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions.
Masayuki Abe Melissa Chase Bernardo David Markulf Kohlweiss Ryo Nishimaki Miyako Ohkubo
2016
conf/eurocrypt
Anonymous Traitor Tracing: How to Embed Arbitrary Information in a Key.
Ryo Nishimaki Daniel Wichs Mark Zhandry
2016
conf/tcc
From Cryptomania to Obfustopia Through Secret-Key Functional Encryption.
Nir Bitansky Ryo Nishimaki Alain Passelègue Daniel Wichs
2014
conf/pkc
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 Keita Xagawa
2013
conf/pkc
Verifiably Encrypted Signatures with Short Keys Based on the Decisional Linear Problem and Obfuscation for Encrypted VES.
Ryo Nishimaki Keita Xagawa
2013
conf/pkc
Tagged One-Time Signatures: Tight Security and Optimal Tag Size.
Masayuki Abe Bernardo David Markulf Kohlweiss Ryo Nishimaki Miyako Ohkubo
2013
conf/eurocrypt
How to Watermark Cryptographic Functions.
Ryo Nishimaki
2012
conf/asiacrypt
Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions.
Masayuki Abe Melissa Chase Bernardo David Markulf Kohlweiss Ryo Nishimaki Miyako Ohkubo
2010
conf/acisp
A Multi-trapdoor Commitment Scheme from the RSA Assumption.
Ryo Nishimaki Eiichiro Fujisaki Keisuke Tanaka
2010
conf/pkc
CCA Proxy Re-Encryption without Bilinear Maps in the Standard Model.
Toshihide Matsuda Ryo Nishimaki Keisuke Tanaka
2009
conf/acisp
Security on Hybrid Encryption with the Tag-KEM/DEM Framework.
Toshihide Matsuda Ryo Nishimaki Akira Numayama Keisuke Tanaka
2009
conf/provsec
Efficient Non-interactive Universally Composable String-Commitment Schemes.
Ryo Nishimaki Eiichiro Fujisaki Keisuke Tanaka
2009
conf/provsec
On the Insecurity of the Fiat-Shamir Signatures with Iterative Hash Functions.
Eiichiro Fujisaki Ryo Nishimaki Keisuke Tanaka

Coauthors

Akira Numayama (1)
Alain Passelègue (2)
Alex Davidson (1)
Anuja Modi (1)
Bernardo David (3)
Daniel Wichs (3)
Dennis Hofheinz (2)
Eiichiro Fujisaki (3)
Feng-Hao Liu (1)
Fuyuki Kitagawa (19)
Jiaxin Pan (2)
Junichi Tomida (1)
Keisuke Tanaka (10)
Keita Xagawa (2)
Mahesh Sreekumar Rajasree (1)
Mark Zhandry (1)
Markulf Kohlweiss (3)
Masayuki Abe (5)
Melissa Chase (3)
Miyako Ohkubo (5)
Nico Döttling (1)
Nikhil Pappu (1)
Nir Bitansky (2)
Nishanth Chandran (1)
Nuttapong Attrapadung (2)
Rishab Goyal (1)
Ryo Nishimaki (52)
Shota Yamada (12)
Shuichi Katsumata (8)
Shweta Agrawal (2)
Taiga Hiroka (4)
Takahiro Matsuda (2)
Takashi Yamakawa (22)
Tapas Pal (1)
Tomoyuki Morimae (4)
Toshihide Matsuda (2)
Venkata Koppula (1)
Yuto Kawahara (1)
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