Robust Cost Sensitive Support Vector Machine. - Shuichi Katsumata; Akiko Takeda (AISTATS, 2015)

Partitioning via Non-Linear Polynomial Functions: More Compact IBEs from Ideal Lattices and Bilinear Maps. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2016)

Model Inversion Attacks for Prediction Systems: Without Knowledge of Non-Sensitive Attributes. - Seira Hidano; Takao Murakami; Shuichi Katsumata; Shinsaku Kiyomoto; Goichiro Hanaoka (PST, 2017)

On the Untapped Potential of Encoding Predicates by Arithmetic Circuits and Their Applications. - Shuichi Katsumata (IACR Cryptol. ePrint Arch., 2017)

Constructing Subspace Membership Encryption through Inner Product Encryption. - Shuichi Katsumata; Noboru Kunihiro (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Anonymous Reputation Systems Achieving Full Dynamicity from Lattices. - Ali El Kaafarani; Shuichi Katsumata; Ravital Solomon (Financial Cryptography, 2018)

Constrained PRFs for Bit-fixing from OWFs with Constant Collusion Resistance. - Alex Davidson; Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001 (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)

Note on Constructing Constrained PRFs from OWFs with Constant Collusion Resistance. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2018)

Attribute-Based Signatures for Unbounded Languages from Standard Assumptions. - Yusuke Sakai 001; Shuichi Katsumata; Nuttapong Attrapadung; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 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)

Identity-Based Encryption with Security Against the KGC: A Formal Model and Its Instantiation from Lattices. - Keita Emura; Shuichi Katsumata; Yohei Watanabe 001 (ESORICS (2), 2019)

Non-Zero Inner Product Encryption Schemes from Various Assumptions: LWE, DDH and DCR. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Exploring Constructions of Compact NIZKs from Various Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2019)

Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2019)

Group Signatures without NIZK: From Lattices in the Standard Model. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Calamari and Falafl: Logarithmic (Linkable) Ring Signatures from Isogenies and Lattices. - Ward Beullens; Shuichi Katsumata; Federico Pintore (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)

Adaptively Secure Constrained Pseudorandom Functions in the Standard Model. - Alex Davidson; Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (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)

Scalable Ciphertext Compression Techniques for Post-Quantum KEMs and their Applications. - Shuichi Katsumata; Kris Kwiatkowski; Federico Pintore; Thomas Prest (IACR Cryptol. ePrint Arch., 2020)

Adaptively Secure Inner Product Encryption from LWE. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 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)

Lattice-based revocable (hierarchical) IBE with decryption key exposure resistance. - Shuichi Katsumata; Takahiro Matsuda 002; Atsushi Takayasu (Theor. Comput. Sci., 2020)

Revisiting Fuzzy Signatures: Towards a More Risk-Free Cryptographic Authentication System based on Biometrics. - Shuichi Katsumata; Takahiro Matsuda 002; Wataru Nakamura; Kazuma Ohara; Kenta Takahashi (CCS, 2021)

Statistical ZAPs from Group-Based Assumptions. - Geoffroy Couteau; Shuichi Katsumata; Elahe Sadeghi; Bogdan Ursu (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)

A New Simple Technique to Bootstrap Various Lattice Zero-Knowledge Proofs to QROM Secure NIZKs. - Shuichi Katsumata (IACR Cryptol. ePrint Arch., 2021)

Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 2021)

Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model. - Shuichi Katsumata; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 2021)

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)

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)

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)

Identity-based encryption with security against the KGC: A formal model and its instantiations. - Keita Emura; Shuichi Katsumata; Yohei Watanabe 001 (Theor. Comput. Sci., 2022)

Signature for Objects: Formalizing How to Authenticate Physical Data and More. - Ryuya Hayashi; Taiki Asano; Junichiro Hayata; Takahiro Matsuda 002; Shota Yamada 001; Shuichi Katsumata; Yusuke Sakai 001; Tadanori Teruya; Jacob C. N. Schuldt; Nuttapong Attrapadung; Goichiro Hanaoka; Kanta Matsuura; et al. (FC (1), 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)

Breaking Parallel ROS: Implication for Isogeny and Lattice-based Blind Signatures. - Shuichi Katsumata; Yi-Fu Lai; Michael Reichle (IACR Cryptol. ePrint Arch., 2023)

Practical Round-Optimal Blind Signatures in the ROM from Standard Assumptions. - Shuichi Katsumata; Michael Reichle; Yusuke Sakai 001 (IACR Cryptol. ePrint Arch., 2023)

Direct computation of branching programs and its applications to more efficient lattice-based cryptography. - Shuichi Katsumata; Toi Tomita; Shota Yamada 001 (Des. Codes Cryptogr., 2023)

Anonymous Reputation Systems with Revocation, Revisited. - Ryuya Hayashi; Shuichi Katsumata; Yusuke Sakai 001 (FC (2), 2024)

Tighter Adaptive IBEs and VRFs: Revisiting Waters' Artificial Abort. - Goichiro Hanaoka; Shuichi Katsumata; Kei Kimura; Kaoru Takemure; Shota Yamada 001 (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)

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)

Raccoon: A Masking-Friendly Signature Proven in the Probing Model. - Rafaël del Pino; Shuichi Katsumata; Thomas Prest; Mélissa Rossi (IACR Cryptol. ePrint Arch., 2024)

Compact NIZKs from Standard Assumptions on Bilinear Maps. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 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., 2024)

Triple Ratchet: A Bandwidth Efficient Hybrid-Secure Signal Protocol. - Yevgeniy Dodis; Daniel Jost 001; Shuichi Katsumata; Thomas Prest; Rolfe Schmidt (IACR Cryptol. ePrint Arch., 2025)

Exploring How to Authenticate Application Messages in MLS: More Efficient, Post-Quantum, and Anonymous Blocklistable. - Keitaro Hashimoto; Shuichi Katsumata; Guillermo Pascual-Perez (IACR Cryptol. ePrint Arch., 2025)

Bundled Authenticated Key Exchange: A Concrete Treatment of (Post-Quantum) Signal's Handshake Protocol. - Keitaro Hashimoto; Shuichi Katsumata; Thom Wiggers (IACR Cryptol. ePrint Arch., 2025)

Concrete Treatment of Signal Handshake's Deniability: Efficient Post-Quantum Deniable Ring Signature. - Shuichi Katsumata; Guilhem Niot; Ida Tucker; Thom Wiggers (IACR Cryptol. ePrint Arch., 2025)

Unmasking TRaccoon: A Lattice-Based Threshold Signature with An Efficient Identifiable Abort Protocol. - Rafaël Del Pino; Shuichi Katsumata; Guilhem Niot; Michael Reichle; Kaoru Takemure (IACR Cryptol. ePrint Arch., 2025)

Two-Round Threshold Signature from Algebraic One-More Learning with Errors. - Thomas Espitau; Shuichi Katsumata; Kaoru Takemure (J. Cryptol., 2025)