Shuichi Katsumata

According to our database, Shuichi Katsumata authored at least 47 papers between 2015 and 2024.

Collaborative distances:

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

2024

CSI-Otter: isogeny-based (partially) blind signatures from the class group action with a twist.

Shuichi Katsumata, Yi-Fu Lai, Jason T. LeGrow, Ling Qin

Des. Codes Cryptogr., November, 2024

Compact NIZKs from Standard Assumptions on Bilinear Maps.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

J. Cryptol., September, 2024

Raccoon: A Masking-Friendly Signature Proven in the Probing Model.

Rafaël del Pino, Shuichi Katsumata, Thomas Prest, Mélissa Rossi

IACR Cryptol. ePrint Arch., 2024

Threshold Raccoon: Practical Threshold Signatures from Standard Lattice Assumptions.

Rafaël Del Pino, Shuichi Katsumata, Mary Maller, Fabrice Mouhartem, Thomas Prest, Markku-Juhani O. Saarinen

IACR Cryptol. ePrint Arch., 2024

Adaptively Secure 5 Round Threshold Signatures from MLWE/MSIS and DL with Rewinding.

Shuichi Katsumata, Michael Reichle, Kaoru Takemure

IACR Cryptol. ePrint Arch., 2024

Tighter Adaptive IBEs and VRFs: Revisiting Waters' Artificial Abort.

Goichiro Hanaoka, Shuichi Katsumata, Kei Kimura, Kaoru Takemure, Shota Yamada

IACR Cryptol. ePrint Arch., 2024

Two-Round Threshold Signature from Algebraic One-More Learning with Errors.

Thomas Espitau, Shuichi Katsumata, Kaoru Takemure

IACR Cryptol. ePrint Arch., 2024

2023

Direct computation of branching programs and its applications to more efficient lattice-based cryptography.

Shuichi Katsumata, Toi Tomita, Shota Yamada

Des. Codes Cryptogr., February, 2023

Practical Round-Optimal Blind Signatures in the ROM from Standard Assumptions.

Shuichi Katsumata, Michael Reichle, Yusuke Sakai

IACR Cryptol. ePrint Arch., 2023

Breaking Parallel ROS: Implication for Isogeny and Lattice-based Blind Signatures.

Shuichi Katsumata, Yi-Fu Lai, Michael Reichle

IACR Cryptol. ePrint Arch., 2023

Group signatures and more from isogenies and lattices: generic, simple, and efficient.

Ward Beullens, Samuel Dobson, Shuichi Katsumata, Yi-Fu Lai, Federico Pintore

Des. Codes Cryptogr., 2023

Signature for Objects: Formalizing How to Authenticate Physical Data and More.

Ryuya Hayashi, Taiki Asano, Junichiro Hayata, Takahiro Matsuda, Shota Yamada, Shuichi Katsumata, Yusuke Sakai, Tadanori Teruya, Jacob C. N. Schuldt, Nuttapong Attrapadung, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

Proceedings of the Financial Cryptography and Data Security, 2023

2022

Identity-based encryption with security against the KGC: A formal model and its instantiations.

Keita Emura, Shuichi Katsumata, Yohei Watanabe

Theor. Comput. Sci., 2022

An Efficient and Generic Construction for Signal's Handshake (X3DH): Post-quantum, State Leakage Secure, and Deniable.

Keitaro Hashimoto, Shuichi Katsumata, Kris Kwiatkowski, Thomas Prest

J. Cryptol., 2022

A New Framework For More Efficient Round-Optimal Lattice-Based (Partially) Blind Signature via Trapdoor Sampling.

Rafaël del Pino, Shuichi Katsumata

IACR Cryptol. ePrint Arch., 2022

How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum.

Keitaro Hashimoto, Shuichi Katsumata, Thomas Prest

IACR Cryptol. ePrint Arch., 2022

2021

Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model.

Shuichi Katsumata, Shota Yamada, Takashi Yamakawa

J. Cryptol., 2021

Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

J. Cryptol., 2021

Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

IACR Cryptol. ePrint Arch., 2021

A New Simple Technique to Bootstrap Various Lattice Zero-Knowledge Proofs to QROM Secure NIZKs.

Shuichi Katsumata

IACR Cryptol. ePrint Arch., 2021

A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs.

Keitaro Hashimoto, Shuichi Katsumata, Eamonn W. Postlethwaite, Thomas Prest, Bas Westerbaan

IACR Cryptol. ePrint Arch., 2021

Statistical ZAPs from Group-Based Assumptions.

Geoffroy Couteau, Shuichi Katsumata, Elahe Sadeghi, Bogdan Ursu

IACR Cryptol. ePrint Arch., 2021

Revisiting Fuzzy Signatures: Towards a More Risk-Free Cryptographic Authentication System based on Biometrics.

Shuichi Katsumata, Takahiro Matsuda, Wataru Nakamura, Kazuma Ohara, Kenta Takahashi

Proceedings of the CCS '21: 2021 ACM SIGSAC Conference on Computer and Communications Security, Virtual Event, Republic of Korea, November 15, 2021

2020

Lattice-based revocable (hierarchical) IBE with decryption key exposure resistance.

Shuichi Katsumata, Takahiro Matsuda, Atsushi Takayasu

Theor. Comput. Sci., 2020

Exposing Private User Behaviors of Collaborative Filtering via Model Inversion Techniques.

Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka

Proc. Priv. Enhancing Technol., 2020

Adaptively Secure Inner Product Encryption from LWE.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

IACR Cryptol. ePrint Arch., 2020

Scalable Ciphertext Compression Techniques for Post-Quantum KEMs and their Applications.

Shuichi Katsumata, Kris Kwiatkowski, Federico Pintore, Thomas Prest

IACR Cryptol. ePrint Arch., 2020

Lossy CSI-FiSh: Efficient Signature Scheme with Tight Reduction to Decisional CSIDH-512.

Ali El Kaafarani, Shuichi Katsumata, Federico Pintore

IACR Cryptol. ePrint Arch., 2020

Adaptively Secure Constrained Pseudorandom Functions in the Standard Model.

Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

IACR Cryptol. ePrint Arch., 2020

Non-Interactive Zero-Knowledge in Pairing-Free Groups from Weaker Assumptions.

Geoffroy Couteau, Shuichi Katsumata, Bogdan Ursu

IACR Cryptol. ePrint Arch., 2020

Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices.

Ward Beullens, Shuichi Katsumata, Federico Pintore

IACR Cryptol. ePrint Arch., 2020

2019

Group Signatures without NIZK: From Lattices in the Standard Model.

Shuichi Katsumata, Shota Yamada

IACR Cryptol. ePrint Arch., 2019

Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

IACR Cryptol. ePrint Arch., 2019

Exploring Constructions of Compact NIZKs from Various Assumptions.

Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa

IACR Cryptol. ePrint Arch., 2019

Non-Zero Inner Product Encryption Schemes from Various Assumptions: LWE, DDH and DCR.

Shuichi Katsumata, Shota Yamada

IACR Cryptol. ePrint Arch., 2019

Identity-Based Encryption with Security Against the KGC: A Formal Model and Its Instantiation from Lattices.

Keita Emura, Shuichi Katsumata, Yohei Watanabe

Proceedings of the Computer Security - ESORICS 2019, 2019

2018

Model Inversion Attacks for Online Prediction Systems: Without Knowledge of Non-Sensitive Attributes.

Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka

IEICE Trans. Inf. Syst., 2018

Attribute-Based Signatures for Unbounded Languages from Standard Assumptions.

Yusuke Sakai, Shuichi Katsumata, Nuttapong Attrapadung, Goichiro Hanaoka

IACR Cryptol. ePrint Arch., 2018

Note on Constructing Constrained PRFs from OWFs with Constant Collusion Resistance.

Shuichi Katsumata, Shota Yamada

IACR Cryptol. ePrint Arch., 2018

Attribute-based Signatures for Unbounded Circuits in the ROM and Efficient Instantiations from Lattices.

Ali El Kaafarani, Shuichi Katsumata

IACR Cryptol. ePrint Arch., 2018

Constrained PRFs for Bit-fixing from OWFs with Constant Collusion Resistance.

Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada

IACR Cryptol. ePrint Arch., 2018

Anonymous Reputation Systems Achieving Full Dynamicity from Lattices.

Ali El Kaafarani, Shuichi Katsumata, Ravital Solomon

Proceedings of the Financial Cryptography and Data Security, 2018

2017

Constructing Subspace Membership Encryption through Inner Product Encryption.

Shuichi Katsumata, Noboru Kunihiro

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017

On the Untapped Potential of Encoding Predicates by Arithmetic Circuits and Their Applications.

Shuichi Katsumata

IACR Cryptol. ePrint Arch., 2017

Model Inversion Attacks for Prediction Systems: Without Knowledge of Non-Sensitive Attributes.

Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka

Proceedings of the 15th Annual Conference on Privacy, Security and Trust, 2017

2016

Partitioning via Non-Linear Polynomial Functions: More Compact IBEs from Ideal Lattices and Bilinear Maps.

Shuichi Katsumata, Shota Yamada

IACR Cryptol. ePrint Arch., 2016

2015

Robust Cost Sensitive Support Vector Machine.

Shuichi Katsumata, Akiko Takeda

Proceedings of the Eighteenth International Conference on Artificial Intelligence and Statistics, 2015