Ryo Nishimaki

ORCID

Publication Activity (10 Years)

Years Active: 2006-2024
Publications (10 Years): 98

Top Venues

IACR Cryptol. ePrint Arch.

CoRR

J. Cryptol.

Public Key Cryptography (2)

Publications

Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions. CRYPTO (7) (2024)
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More. EUROCRYPT (3) (2024)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Compact NIZKs from Standard Assumptions on Bilinear Maps. J. Cryptol. 37 (3) (2024)
Fuyuki Kitagawa, Ryo Nishimaki
Watermarking PRFs and PKE Against Quantum Adversaries. J. Cryptol. 37 (3) (2024)
Shweta Agrawal, Simran Kumari, Ryo Nishimaki
Pre-Constrained Cryptography: Broad Definitions, New Constructions, Unbounded Security. IACR Cryptol. ePrint Arch. 2024 (2024)
Fuyuki Kitagawa, Ryo Nishimaki
One-out-of-Many Unclonable Cryptography: Definitions, Constructions, and More. CoRR (2023)
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Obfuscation of Pseudo-Deterministic Quantum Circuits. STOC (2023)
Fuyuki Kitagawa, Ryo Nishimaki
One-Out-of-Many Unclonable Cryptography: Definitions, Constructions, and More. TCC (4) (2023)
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More. CoRR (2023)
Taiga Hiroka, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Robust Combiners and Universal Constructions for Quantum Cryptography. IACR Cryptol. ePrint Arch. 2023 (2023)
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Public Key Encryption with Secure Key Leasing. CoRR (2023)
Masayuki Abe, Dennis Hofheinz, Ryo Nishimaki, Miyako Ohkubo, Jiaxin Pan
Compact Structure-Preserving Signatures with Almost Tight Security. J. Cryptol. 36 (4) (2023)
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More. IACR Cryptol. ePrint Arch. 2023 (2023)
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Obfuscation of Pseudo-Deterministic Quantum Circuits. IACR Cryptol. ePrint Arch. 2023 (2023)
Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions. CoRR (2023)
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Public Key Encryption with Secure Key Leasing. EUROCRYPT (1) (2023)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Publicly Verifiable Deletion from Minimal Assumptions. IACR Cryptol. ePrint Arch. 2023 (2023)
Fuyuki Kitagawa, Ryo Nishimaki
One-out-of-Many Unclonable Cryptography: Definitions, Constructions, and More. IACR Cryptol. ePrint Arch. 2023 (2023)
Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions. IACR Cryptol. ePrint Arch. 2023 (2023)
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Public Key Encryption with Secure Key Leasing. IACR Cryptol. ePrint Arch. 2023 (2023)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Publicly Verifiable Deletion from Minimal Assumptions. TCC (4) (2023)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Publicly Verifiable Deletion from Minimal Assumptions. CoRR (2023)
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Obfuscation of Pseudo-Deterministic Quantum Circuits. CoRR (2023)
Fuyuki Kitagawa, Ryo Nishimaki
Functional Encryption with Secure Key Leasing. IACR Cryptol. ePrint Arch. 2022 (2022)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Certified Everlasting Functional Encryption. IACR Cryptol. ePrint Arch. 2022 (2022)
Shweta Agrawal, Fuyuki Kitagawa, Anuja Modi, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions. TCC (1) (2022)
Ryo Nishimaki
The Direction of Updatable Encryption Does Matter. Public Key Cryptography (2) (2022)
Fuyuki Kitagawa, Ryo Nishimaki
Watermarking PRFs against Quantum Adversaries. CoRR (2022)
Fuyuki Kitagawa, Ryo Nishimaki
Functional Encryption with Secure Key Leasing. CoRR (2022)
Shweta Agrawal, Rajarshi Biswas, Ryo Nishimaki, Keita Xagawa, Xiang Xie, Shota Yamada
Cryptanalysis of Boyen's attribute-based encryption scheme in TCC 2013. Des. Codes Cryptogr. 90 (10) (2022)
Fuyuki Kitagawa, Ryo Nishimaki
Watermarking PRFs Against Quantum Adversaries. EUROCRYPT (3) (2022)
Fuyuki Kitagawa, Ryo Nishimaki
KDM Security for the Fujisaki-Okamoto Transformations in the QROM. Public Key Cryptography (2) (2022)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Obfustopia Built on Secret-Key Functional Encryption. J. Cryptol. 35 (3) (2022)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Certified Everlasting Zero-Knowledge Proof for QMA. CRYPTO (1) (2022)
Fuyuki Kitagawa, Ryo Nishimaki
Watermarking PRFs against Quantum Adversaries. IACR Cryptol. ePrint Arch. 2022 (2022)
Fuyuki Kitagawa, Ryo Nishimaki
Functional Encryption with Secure Key Leasing. ASIACRYPT (4) (2022)
Shweta Agrawal, Fuyuki Kitagawa, Anuja Modi, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions. IACR Cryptol. ePrint Arch. 2022 (2022)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Certified Everlasting Functional Encryption. CoRR (2022)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Secure Software Leasing from Standard Assumptions. TCC (1) (2021)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Obfustopia Built on Secret-Key Functional Encryption. IACR Cryptol. ePrint Arch. 2021 (2021)
Fuyuki Kitagawa, Ryo Nishimaki
KDM Security for the Fujisaki-Okamoto Transformations in the QROM. IACR Cryptol. ePrint Arch. 2021 (2021)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Simple and Generic Constructions of Succinct Functional Encryption. J. Cryptol. 34 (3) (2021)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions. EUROCRYPT (1) (2021)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication. CoRR (2021)
Ryo Nishimaki
The Direction of Updatable Encryption Does Matter. IACR Cryptol. ePrint Arch. 2021 (2021)
Junichi Tomida, Yuto Kawahara, Ryo Nishimaki
Fast, compact, and expressive attribute-based encryption. Des. Codes Cryptogr. 89 (11) (2021)
Nico Döttling, Ryo Nishimaki
Universal Proxy Re-Encryption. Public Key Cryptography (1) (2021)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication. IACR Cryptol. ePrint Arch. 2021 (2021)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings. J. Cryptol. 34 (4) (2021)
Ryo Nishimaki, Takashi Yamakawa
Quantum Encryption with Certified Deletion: Public Key and Attribute-Based. IACR Cryptol. ePrint Arch. 2021 (2021)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Certified Everlasting Zero-Knowledge Proof for QMA. CoRR (2021)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication. ASIACRYPT (1) (2021)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
Certified Everlasting Zero-Knowledge Proof for QMA. IACR Cryptol. ePrint Arch. 2021 (2021)
Shweta Agrawal, Rajarshi Biswas, Ryo Nishimaki, Keita Xagawa, Xiang Xie, Shota Yamada
Cryptanalysis of Boyen's Attribute-Based Encryption Scheme in TCC 2013. IACR Cryptol. ePrint Arch. 2021 (2021)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions. IACR Cryptol. ePrint Arch. 2021 (2021)
Junichi Tomida, Yuto Kawahara, Ryo Nishimaki
Fast, Compact, and Expressive Attribute-Based Encryption. Public Key Cryptography (1) (2020)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Secure Software Leasing from Standard Assumptions. IACR Cryptol. ePrint Arch. 2020 (2020)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Compact NIZKs from Standard Assumptions on Bilinear Maps. IACR Cryptol. ePrint Arch. 2020 (2020)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Compact NIZKs from Standard Assumptions on Bilinear Maps. EUROCRYPT (3) (2020)
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model. IACR Cryptol. ePrint Arch. 2020 (2020)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Secure Inner Product Encryption from LWE. IACR Cryptol. ePrint Arch. 2020 (2020)
Ryo Nishimaki
Equipping Public-Key Cryptographic Primitives with Watermarking (or: A Hole Is to Watermark). TCC (1) (2020)
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model. CRYPTO (1) (2020)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
Secure Software Leasing from Standard Assumptions. CoRR (2020)
Nir Bitansky, Ryo Nishimaki, Alain Passelègue, Daniel Wichs
From Cryptomania to Obfustopia Through Secret-Key Functional Encryption. J. Cryptol. 33 (2) (2020)
Ryo Nishimaki
Equipping Public-Key Cryptographic Primitives with Watermarking (or: A Hole Is to Watermark). IACR Cryptol. ePrint Arch. 2020 (2020)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Secure Inner Product Encryption from LWE. ASIACRYPT (3) (2020)
Ryo Nishimaki, Takashi Yamakawa
Leakage-Resilient Identity-Based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio. Public Key Cryptography (1) (2019)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka, Takashi Yamakawa
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously. CRYPTO (3) (2019)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions. IACR Cryptol. ePrint Arch. 2019 (2019)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions. EUROCRYPT (2) (2019)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Exploring Constructions of Compact NIZKs from Various Assumptions. CRYPTO (3) (2019)
Junichi Tomida, Yuto Kawahara, Ryo Nishimaki
Fast, Compact, and Expressive Attribute-Based Encryption. IACR Cryptol. ePrint Arch. 2019 (2019)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Single-Key Secure Constrained PRFs for \mathrm NC^1. Public Key Cryptography (2) (2019)
Ryo Nishimaki, Takashi Yamakawa
Leakage-resilient Identity-based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio. IACR Cryptol. ePrint Arch. 2019 (2019)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Exploring Constructions of Compact NIZKs from Various Assumptions. IACR Cryptol. ePrint Arch. 2019 (2019)
Ryo Nishimaki
How to Watermark Cryptographic Functions by Bilinear Maps. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2019)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Simple and Generic Constructions of Succinct Functional Encryption. Public Key Cryptography (2) (2018)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Obfustopia Built on Secret-Key Functional Encryption. EUROCRYPT (2) (2018)
Aloni Cohen, Justin Holmgren, Ryo Nishimaki, Vinod Vaikuntanathan, Daniel Wichs
Watermarking Cryptographic Capabilities. SIAM J. Comput. 47 (6) (2018)
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada
Constrained PRFs for Bit-fixing from OWFs with Constant Collusion Resistance. IACR Cryptol. ePrint Arch. 2018 (2018)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Constrained PRFs for NC1 in Traditional Groups. IACR Cryptol. ePrint Arch. 2018 (2018)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Adaptively Single-Key Secure Constrained PRFs for NC1. IACR Cryptol. ePrint Arch. 2018 (2018)
Nico Döttling, Ryo Nishimaki
Universal Proxy Re-Encryption. IACR Cryptol. ePrint Arch. 2018 (2018)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
Constrained PRFs for \mathrmNC^1 in Traditional Groups. CRYPTO (2) (2018)
Alex Davidson, Ryo Nishimaki
A Bit-fixing PRF with O(1) Collusion-Resistance from LWE. IACR Cryptol. ePrint Arch. 2018 (2018)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka, Takashi Yamakawa
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously. IACR Cryptol. ePrint Arch. 2018 (2018)
Masayuki Abe, Dennis Hofheinz, Ryo Nishimaki, Miyako Ohkubo, Jiaxin Pan
Compact Structure-preserving Signatures with Almost Tight Security. IACR Cryptol. ePrint Arch. 2017 (2017)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
From Single-Key to Collusion-Resistant Secret-Key Functional Encryption by Leveraging Succinctness. IACR Cryptol. ePrint Arch. 2017 (2017)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Indistinguishability Obfuscation for All Circuits from Secret-Key Functional Encryption. IACR Cryptol. ePrint Arch. 2017 (2017)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka
Indistinguishability Obfuscation: Simpler Constructions using Secret-Key Functional Encryption. IACR Cryptol. ePrint Arch. 2017 (2017)
Masayuki Abe, Dennis Hofheinz, Ryo Nishimaki, Miyako Ohkubo, Jiaxin Pan
Compact Structure-Preserving Signatures with Almost Tight Security. CRYPTO (2) (2017)
Masayuki Abe, Melissa Chase, Bernardo David, Markulf Kohlweiss, Ryo Nishimaki, Miyako Ohkubo
Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions. J. Cryptol. 29 (4) (2016)
Nir Bitansky, Ryo Nishimaki, Alain Passelègue, Daniel Wichs
From Cryptomania to Obfustopia through Secret-Key Functional Encryption. IACR Cryptol. ePrint Arch. 2016 (2016)
Nir Bitansky, Ryo Nishimaki, Alain Passelègue, Daniel Wichs
From Cryptomania to Obfustopia Through Secret-Key Functional Encryption. TCC (B2) (2016)
Aloni Cohen, Justin Holmgren, Ryo Nishimaki, Vinod Vaikuntanathan, Daniel Wichs
Watermarking cryptographic capabilities. STOC (2016)
Ryo Nishimaki, Daniel Wichs, Mark Zhandry
Anonymous Traitor Tracing: How to Embed Arbitrary Information in a Key. EUROCRYPT (2) (2016)
Ryo Nishimaki
Watermarking Cryptographic Programs. Mycrypt (2016)
Ryo Nishimaki, Daniel Wichs
Watermarking Cryptographic Programs Against Arbitrary Removal Strategies. IACR Cryptol. ePrint Arch. 2015 (2015)
Bernardo David, Ryo Nishimaki, Samuel Ranellucci, Alain Tapp
Generalizing Efficient Multiparty Computation. IACR Cryptol. ePrint Arch. 2015 (2015)

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Publication Activity (10 Years)

Top Topics

Top Venues

Ryo Nishimaki