Yusuke Sakai

According to our database, Yusuke Sakai authored at least 57 papers between 2010 and 2024.

Collaborative distances:

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

2024

More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters for Standardized Elliptic Curves.

Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024

Constraints and Evaluations on Signature Transmission Interval for Aggregate Signatures with Interactive Tracing Functionality.

Ryu Ishii, Kyosuke Yamashita, Zihao Song, Yusuke Sakai, Tadanori Teruya, Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024

Attribute-Based Signatures for Circuits with Optimal Parameter Size from Standard Assumptions.

Ryuya Hayashi, Yusuke Sakai, Shota Yamada

IACR Cryptol. ePrint Arch., 2024

On Key Substitution Attacks against Aggregate Signatures and Multi-Signatures.

Yuuki Fujita, Yusuke Sakai, Kyosuke Yamashita, Goichiro Hanaoka

IACR Cryptol. ePrint Arch., 2024

Privacy-Preserving Verifiable CNNs.

Nuttapong Attrapadung, Goichiro Hanaoka, Ryo Hiromasa, Yoshihiro Koseki, Takahiro Matsuda, Yutaro Nishida, Yusuke Sakai, Jacob C. N. Schuldt, Satoshi Yasuda

Proceedings of the Applied Cryptography and Network Security, 2024

2023

Fault-Tolerant Aggregate Signature Schemes against Bandwidth Consumption Attack.

Kyosuke Yamashita, Ryu Ishii, Yusuke Sakai, Tadanori Teruya, Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., September, 2023

More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters.

Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta

IACR Cryptol. ePrint Arch., 2023

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

Shuichi Katsumata, Michael Reichle, Yusuke Sakai

IACR Cryptol. ePrint Arch., 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

Aggregate Signature Schemes with Traceability of Devices Dynamically Generating Invalid Signatures.

Ryu Ishii, Kyosuke Yamashita, Yusuke Sakai, Tadanori Teruya, Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

IEICE Trans. Inf. Syst., November, 2022

Succinct Attribute-Based Signatures for Bounded-Size Circuits by Combining Algebraic and Arithmetic Proofs.

Yusuke Sakai

Proceedings of the Security and Cryptography for Networks - 13th International Conference, 2022

Constraints and Evaluations on Signature Transmission Interval for Aggregate Signatures with Interactive Tracing Functionality.

Ryu Ishii, Kyosuke Yamashita, Zihao Song, Yusuke Sakai, Tadanori Teruya, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

Proceedings of the Attacks and Defenses for the Internet-of-Things, 2022

2021

Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers.

Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021

Equivalence between Non-Malleability against Replayable CCA and Other RCCA-Security Notions.

Junichiro Hayata, Fuyuki Kitagawa, Yusuke Sakai, Goichiro Hanaoka, Kanta Matsuura

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021

Fully Anonymous Group Signature with Verifier-Local Revocation.

Ai Kitagawa, Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka

IACR Cryptol. ePrint Arch., 2021

Aggregate Signature with Traceability of Devices Dynamically Generating Invalid Signatures.

Ryu Ishii, Kyosuke Yamashita, Yusuke Sakai, Takahiro Matsuda, Tadanori Teruya, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto

Proceedings of the Applied Cryptography and Network Security Workshops, 2021

2020

Verifiable Privacy-Preserving Data Aggregation Protocols.

Satoshi Yasuda, Yoshihiro Koseki, Yusuke Sakai, Fuyuki Kitagawa, Yutaka Kawai, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

Practical Public-Key Encryption Scheme Tightly Secure in the Random Oracle Model.

Yusuke Sakai, Goichiro Hanaoka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

Generic Construction of Adaptively Secure Anonymous Key-Policy Attribute-Based Encryption from Public-Key Searchable Encryption.

Junichiro Hayata, Masahito Ishizaka, Yusuke Sakai, Goichiro Hanaoka, Kanta Matsuura

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

A Setup-Free Threshold Encryption Scheme for the Bitcoin Protocol and Its Applications.

Goichiro Hanaoka, Yusuke Sakai, Toshiya Shimizu, Takeshi Shimoyama, SeongHan Shin

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020

Cryptanalysis of Aggregate Γ-Signature and Practical Countermeasures in Application to Bitcoin.

Goichiro Hanaoka, Kazuo Ohta, Yusuke Sakai, Bagus Santoso, Kaoru Takemure, Yunlei Zhao

IACR Cryptol. ePrint Arch., 2020

Semantic Definition of Anonymity in Identity-Based Encryption and Its Relation to Indistinguishability-Based Definition.

Goichiro Hanaoka, Misaki Komatsu, Kazuma Ohara, Yusuke Sakai, Shota Yamada

Proceedings of the Computer Security - ESORICS 2020, 2020

2019

Group Signatures with Message-Dependent Opening: Formal Definitions and Constructions.

Keita Emura, Goichiro Hanaoka, Yutaka Kawai, Takahiro Matsuda, Kazuma Ohara, Kazumasa Omote, Yusuke Sakai

Secur. Commun. Networks, 2019

Shortening the Libert-Peters-Yung Revocable Group Signature Scheme by Using the Random Oracle Methodology.

Kazuma Ohara, Keita Emura, Goichiro Hanaoka, Ai Ishida, Kazuo Ohta, Yusuke Sakai

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019

Field Extension in Secret-Shared Form and Its Applications to Efficient Secure Computation.

Ryo Kikuchi, Nuttapong Attrapadung, Koki Hamada, Dai Ikarashi, Ai Ishida, Takahiro Matsuda, Yusuke Sakai, Jacob C. N. Schuldt

IACR Cryptol. ePrint Arch., 2019

Proper Usage of the Group Signature Scheme in ISO/IEC 20008-2.

Ai Ishida, Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka

IACR Cryptol. ePrint Arch., 2019

Recent Advances in Attribute-Based Signatures.

Yusuke Sakai

Proceedings of the 6th on ASIA Public-Key Cryptography Workshop, 2019

2018

Practical attribute-based signature schemes for circuits from bilinear map.

Yusuke Sakai, Nuttapong Attrapadung, Goichiro Hanaoka

IET Inf. Secur., 2018

Tag-KEM/DEM Framework for Public-Key Encryption with Non-Interactive Opening.

Yusuke Sakai, Takahiro Matsuda, 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

Fully Anonymous Group Signature with Verifier-Local Revocation.

Ai Ishida, Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka

Proceedings of the Security and Cryptography for Networks - 11th International Conference, 2018

Formal Treatment of Verifiable Privacy-Preserving Data-Aggregation Protocols.

Satoshi Yasuda, Yoshihiro Koseki, Yusuke Sakai, Fuyuki Kitagawa, Yutaka Kawai, Goichiro Hanaoka

Proceedings of the Provable Security, 2018

A Consideration on the Transformation from Deniable Group Signature to Disavowable PKENO.

Ai Ishida, Yusuke Sakai, Goichiro Hanaoka

Proceedings of the International Symposium on Information Theory and Its Applications, 2018

A Remark on an Identity-Based Encryption Scheme with Non-interactive Opening.

Yusuke Sakai, Goichiro Hanaoka

Proceedings of the International Symposium on Information Theory and Its Applications, 2018

Efficient Two-level Homomorphic Encryption in Prime-order Bilinear Groups and A Fast Implementation in WebAssembly.

Nuttapong Attrapadung, Goichiro Hanaoka, Shigeo Mitsunari, Yusuke Sakai, Kana Shimizu, Tadanori Teruya

Proceedings of the 2018 on Asia Conference on Computer and Communications Security, 2018

2017

A privacy-enhanced access log management mechanism in SSO systems from nominative signatures.

Sanami Nakagawa, Takashi Nishide, Eiji Okamoto, Keita Emura, Goichiro Hanaoka, Yusuke Sakai, Akihisa Kodate

Int. J. Appl. Cryptogr., 2017

Group Signature with Deniability: How to Disavow a Signature.

Ai Ishida, Keita Emura, Goichiro Hanaoka, Yusuke Sakai, Keisuke Tanaka

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

2016

Constructions of dynamic and non-dynamic threshold public-key encryption schemes with decryption consistency.

Yusuke Sakai, Keita Emura, Jacob C. N. Schuldt, Goichiro Hanaoka, Kazuo Ohta

Theor. Comput. Sci., 2016

Attribute-Based Signatures for Circuits from Bilinear Map.

Yusuke Sakai, Nuttapong Attrapadung, Goichiro Hanaoka

IACR Cryptol. ePrint Arch., 2016

Simple, Secure, and Efficient Searchable Symmetric Encryption with Multiple Encrypted Indexes.

Takato Hirano, Mitsuhiro Hattori, Yutaka Kawai, Nori Matsuda, Mitsugu Iwamoto, Kazuo Ohta, Yusuke Sakai, Tatsuji Munaka

Proceedings of the Advances in Information and Computer Security, 2016

2015

Disavowable Public Key Encryption with Non-Interactive Opening.

Ai Ishida, Keita Emura, Goichiro Hanaoka, Yusuke Sakai, Keisuke Tanaka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015

Revocable Group Signature with Constant-Size Revocation List.

Nuttapong Attrapadung, Keita Emura, Goichiro Hanaoka, Yusuke Sakai

Comput. J., 2015

Dynamic Threshold Public-Key Encryption with Decryption Consistency from Static Assumptions.

Yusuke Sakai, Keita Emura, Jacob C. N. Schuldt, Goichiro Hanaoka, Kazuo Ohta

Proceedings of the Information Security and Privacy - 20th Australasian Conference, 2015

2014

Group signature implies public-key encryption with non-interactive opening.

Keita Emura, Goichiro Hanaoka, Yusuke Sakai, Jacob C. N. Schuldt

Int. J. Inf. Sec., 2014

Privacy-preserving smart metering with verifiability for both billing and energy management.

Kazuma Ohara, Yusuke Sakai, Fumiaki Yoshida, Mitsugu Iwamoto, Kazuo Ohta

Proceedings of the ASIAPKC'14, 2014

A Revocable Group Signature Scheme from Identity-Based Revocation Techniques: Achieving Constant-Size Revocation List.

Nuttapong Attrapadung, Keita Emura, Goichiro Hanaoka, Yusuke Sakai

Proceedings of the Applied Cryptography and Network Security, 2014

2013

Methods for Restricting Message Space in Public-Key Encryption.

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Yutaka Kawai, Kazumasa Omote

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013

Ciphertext-Policy Delegatable Hidden Vector Encryption and Its Application.

Mitsuhiro Hattori, Takato Hirano, Takashi Ito, Nori Matsuda, Takumi Mori, Yusuke Sakai, Kazuo Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013

A group signature scheme with unbounded message-dependent opening.

Kazuma Ohara, Yusuke Sakai, Keita Emura, Goichiro Hanaoka

Proceedings of the 8th ACM Symposium on Information, Computer and Communications Security, 2013

2012

On the Security of Dynamic Group Signatures: Preventing Signature Hijacking.

Yusuke Sakai, Jacob C. N. Schuldt, Keita Emura, Goichiro Hanaoka, Kazuo Ohta

IACR Cryptol. ePrint Arch., 2012

Group Signatures with Message-Dependent Opening.

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Yutaka Kawai, Takahiro Matsuda, Kazumasa Omote

Proceedings of the Pairing-Based Cryptography - Pairing 2012, 2012

2011

On the (Im)possibility Results for Strong Attack Models for Public Key Cryptsystems.

Yutaka Kawai, Yusuke Sakai, Noboru Kunihiro

J. Internet Serv. Inf. Secur., 2011

How to Shorten a Ciphertext of Reproducible Key Encapsulation Mechanisms in the Random Oracle Model.

Yusuke Sakai, Goichiro Hanaoka, Kaoru Kurosawa, Kazuo Ohta

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011

Towards Restricting Plaintext Space in Public Key Encryption.

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Yutaka Kawai, Kazumasa Omote

Proceedings of the Advances in Information and Computer Security, 2011

Ciphertext-Policy Delegatable Hidden Vector Encryption and Its Application to Searchable Encryption in Multi-user Setting.

Mitsuhiro Hattori, Takato Hirano, Takashi Ito, Nori Matsuda, Takumi Mori, Yusuke Sakai, Kazuo Ohta

Proceedings of the Cryptography and Coding - 13th IMA International Conference, 2011

2010

A Generic Method for Reducing Ciphertext Length of Reproducible KEMs in the RO Model.

Yusuke Sakai, Goichiro Hanaoka, Kaoru Kurosawa, Kazuo Ohta

Proceedings of the Advances in Information and Computer Security, 2010

Group Signature Implies PKE with Non-interactive Opening and Threshold PKE.

Keita Emura, Goichiro Hanaoka, Yusuke Sakai

Proceedings of the Advances in Information and Computer Security, 2010