Proceedings of the Advances in Cryptology - EUROCRYPT 2022 - 41st Annual International Conference on the Theory and Applications of Cryptographic Techniques, Trondheim, Norway, May 30, 2022

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

[BibT_eX]

[DOI]

Rafaël del Pino

Shuichi Katsumata

Proceedings of the Advances in Cryptology - CRYPTO 2022, 2022

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

[BibT_eX]

[DOI]

Keitaro Hashimoto

Shuichi Katsumata

Thomas Prest

Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security, 2022

2021

Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings.

[BibT_eX]

[DOI]

J. Cryptol., 2021

Statistical ZAPs from Group-Based Assumptions.

[BibT_eX]

[DOI]

Proceedings of the Theory of Cryptography - 19th International Conference, 2021

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

[BibT_eX]

[DOI]

Proceedings of the Public-Key Cryptography - PKC 2021, 2021

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

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - EUROCRYPT 2021, 2021

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Proceedings of the Advances in Cryptology - CRYPTO 2021, 2021

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

[BibT_eX]

[DOI]

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

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

[BibT_eX]

[DOI]

Keitaro Hashimoto

Shuichi Katsumata

Eamonn W. Postlethwaite

Thomas Prest

Bas Westerbaan

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

2020

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

[BibT_eX]

[DOI]

Proc. Priv. Enhancing Technol., 2020

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

[BibT_eX]

[DOI]

Ali El Kaafarani

Shuichi Katsumata

Federico Pintore

Proceedings of the Public-Key Cryptography - PKC 2020, 2020

Compact NIZKs from Standard Assumptions on Bilinear Maps.

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - EUROCRYPT 2020, 2020

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

[BibT_eX]

[DOI]

Geoffroy Couteau

Shuichi Katsumata

Bogdan Ursu

Proceedings of the Advances in Cryptology - EUROCRYPT 2020, 2020

Adaptively Secure Constrained Pseudorandom Functions in the Standard Model.

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - CRYPTO 2020, 2020

Adaptively Secure Inner Product Encryption from LWE.

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - ASIACRYPT 2020, 2020

Scalable Ciphertext Compression Techniques for Post-quantum KEMs and Their Applications.

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - ASIACRYPT 2020, 2020

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

[BibT_eX]

[DOI]

Ward Beullens

Shuichi Katsumata

Federico Pintore

Proceedings of the Advances in Cryptology - ASIACRYPT 2020, 2020

2019

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Shota Yamada

Proceedings of the Public-Key Cryptography - PKC 2019, 2019

Lattice-Based Revocable (Hierarchical) IBE with Decryption Key Exposure Resistance.

[BibT_eX]

[DOI]

Shuichi Katsumata

Takahiro Matsuda

Atsushi Takayasu

Proceedings of the Public-Key Cryptography - PKC 2019, 2019

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

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - EUROCRYPT 2019, 2019

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Shota Yamada

Proceedings of the Advances in Cryptology - EUROCRYPT 2019, 2019

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

[BibT_eX]

[DOI]

Keita Emura

Shuichi Katsumata

Yohei Watanabe

Proceedings of the Computer Security - ESORICS 2019, 2019

Exploring Constructions of Compact NIZKs from Various Assumptions.

[BibT_eX]

[DOI]

Proceedings of the Advances in Cryptology - CRYPTO 2019, 2019

2018

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

[BibT_eX]

[DOI]

IEICE Trans. Inf. Syst., 2018

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Shota Yamada

IACR Cryptol. ePrint Arch., 2018

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

[BibT_eX]

[DOI]

IACR Cryptol. ePrint Arch., 2018

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

[BibT_eX]

[DOI]

Ali El Kaafarani

Shuichi Katsumata

Proceedings of the Public-Key Cryptography - PKC 2018, 2018

Anonymous Reputation Systems Achieving Full Dynamicity from Lattices.

[BibT_eX]

[DOI]

Ali El Kaafarani

Shuichi Katsumata

Ravital Solomon

Proceedings of the Financial Cryptography and Data Security, 2018

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Shota Yamada

Takashi Yamakawa

Proceedings of the Advances in Cryptology - ASIACRYPT 2018, 2018

Attribute-Based Signatures for Unbounded Languages from Standard Assumptions.

[BibT_eX]

[DOI]

Yusuke Sakai

Shuichi Katsumata

Nuttapong Attrapadung

Goichiro Hanaoka

Proceedings of the Advances in Cryptology - ASIACRYPT 2018, 2018

2017

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

[BibT_eX]

[DOI]

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

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Proceedings of the Advances in Cryptology - ASIACRYPT 2017, 2017

2016

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

[BibT_eX]

[DOI]

Shuichi Katsumata

Shota Yamada

Proceedings of the Advances in Cryptology - ASIACRYPT 2016, 2016

2015

Robust Cost Sensitive Support Vector Machine.

[BibT_eX]

[DOI]

Shuichi Katsumata

Akiko Takeda

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

2014

Constructing Subspace Membership Encryption through Inner Product Encryption.

[BibT_eX]

[DOI]

Shuichi Katsumata

Noboru Kunihiro

Proceedings of the Provable Security - 8th International Conference, 2014

Shuichi Katsumata

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