A Coin-Free Oracle-Based Augmented Black Box Framework. - Kyosuke Yamashita; Mehdi Tibouchi; Masayuki Abe (IACR Cryptol. ePrint Arch., 2019)

On Black-Box Extension of a Non-Interactive Zero-Knowledge Proof System for Secret Equality. - Kyosuke Yamashita; Mehdi Tibouchi; Masayuki Abe (INDOCRYPT, 2020)

A Coin-Free Oracle-Based Augmented Black Box Framework (Full Paper). - Kyosuke Yamashita; Mehdi Tibouchi; Masayuki Abe (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

Aggregate Signature with Traceability of Devices Dynamically Generating Invalid Signatures. - Ryu Ishii; Kyosuke Yamashita; Yusuke Sakai 001; Takahiro Matsuda 002; Tadanori Teruya; Goichiro Hanaoka; Kanta Matsuura; Tsutomu Matsumoto (ACNS Workshops, 2021)

On the Impossibility of NIZKs for Disjunctive Languages From Commit-and-Prove NIZKs. - Kyosuke Yamashita; Mehdi Tibouchi; Masayuki Abe (IEEE Access, 2021)

Constraints and Evaluations on Signature Transmission Interval for Aggregate Signatures with Interactive Tracing Functionality. - Ryu Ishii; Kyosuke Yamashita; Zihao Song; Yusuke Sakai 001; Tadanori Teruya; Goichiro Hanaoka; Kanta Matsuura; Tsutomu Matsumoto (ADIoT, 2022)

Aggregate Signature Schemes with Traceability of Devices Dynamically Generating Invalid Signatures. - Ryu Ishii; Kyosuke Yamashita; Yusuke Sakai 001; Tadanori Teruya; Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Tsutomu Matsumoto (IEICE Trans. Inf. Syst., 2022)

JABBERWOCK: A Tool for WebAssembly Dataset Generation towards Malicious Website Detection. - Chika Komiya; Naoto Yanai; Kyosuke Yamashita; Shingo Okamura (DSN-W, 2023)

Generic Construction of Key-Aggregate Searchable Encryption. - Masahiro Kamimura; Kyosuke Yamashita; Naoto Yanai (GeoPrivacy@SIGSPATIAL, 2023)

An Empirical Study of Impact of Solidity Compiler Updates on Vulnerabilities in Ethereum Smart Contracts. - Chihiro Kado; Naoto Yanai; Jason Paul Cruz; Kyosuke Yamashita; Shingo Okamura (CoRR, 2023)

On the Black-Box Separation Between Ring Signatures and Public Key Encryptions. - Kyosuke Yamashita; Keisuke Hara (IACR Cryptol. ePrint Arch., 2023)

Fault-Tolerant Aggregate Signature Schemes against Bandwidth Consumption Attack. - Kyosuke Yamashita; Ryu Ishii; Yusuke Sakai 001; Tadanori Teruya; Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Tsutomu Matsumoto (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Designated Verifier Signature with Repudiability. - Takumi Matsuura; Keisuke Hara; Kyosuke Yamashita (APKC@AsiaCCS, 2024)

REN-A.I.: A Video Game for AI Security Education Leveraging Episodic Memory. - Mine Arai; Koki Tejima; Yuya Yamada; Takayuki Miura; Kyosuke Yamashita; Chihiro Kado; Rei Shimizu; Masataka Tatsumi; Naoto Yanai; Goichiro Hanaoka (IEEE Access, 2024)

On Key Substitution Attacks against Aggregate Signatures and Multi-Signatures. - Yuuki Fujita; Yusuke Sakai 001; Kyosuke Yamashita; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2024)

Constraints and Evaluations on Signature Transmission Interval for Aggregate Signatures with Interactive Tracing Functionality. - Ryu Ishii; Kyosuke Yamashita; Zihao Song; Yusuke Sakai 001; Tadanori Teruya; Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Tsutomu Matsumoto (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

Designated Verifier Signature with Claimability. - Kyosuke Yamashita; Keisuke Hara; Yohei Watanabe 001; Naoto Yanai; Junji Shikata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

JABBERWOCK: A Tool for WebAssembly Dataset Generation and Its Application to Malicious Website Detection. - Chika Komiya; Naoto Yanai; Kyosuke Yamashita; Shingo Okamura (J. Inf. Process., 2024)

On the Black-Box impossibility of multi-designated verifiers signature schemes from ring signature schemes. - Kyosuke Yamashita; Keisuke Hara (J. Math. Cryptol., 2024)

Homomorphic Signature With Designated Evaluator. - Kazuma Shiraishi; Keisuke Hara; Toi Tomita; Kyosuke Yamashita; Junji Shikata (IEEE Access, 2025)

Foundations of Multi-Designated Verifier Signature: Comprehensive Formalization and New Constructions in Subset Simulation. - Keitaro Hashimoto; Kyosuke Yamashita; Keisuke Hara (IACR Cryptol. ePrint Arch., 2025)

On Multi-Key FuncCPA Secure Encryption Schemes. - Eri Nakajima; Keisuke Hara; Kyosuke Yamashita (IACR Cryptol. ePrint Arch., 2025)

Empirical Study of Impact of Solidity Compiler Updates on Vulnerabilities in Ethereum Smart Contracts. - Chihiro Kado; Naoto Yanai; Jason Paul Cruz; Kyosuke Yamashita; Shingo Okamura (Distributed Ledger Technol. Res. Pract., 2025)