A public-key cryptosystem based on the difficulty of solving a system of nonlinear equations. - Shigeo Tsujii; Toshiya Itoh; Atsushi Fujioka; Kaoru Kurosawa; Tsutomu Matsumoto (Syst. Comput. Jpn., 1988)

ESIGN: An Efficient Digital Signature Implementation for Smard Cards. - Atsushi Fujioka; Tatsuaki Okamoto; Shoji Miyaguchi (EUROCRYPT, 1991)

Interactive Bi-Proof Systems and Undeniable Signature Schemes. - Atsushi Fujioka; Tatsuaki Okamoto; Kazuo Ohta (EUROCRYPT, 1991)

Provably Secure Key-Updating Schemes in Identity-Based Systems. - Shinji Shinozaki; Atsushi Fujioka; Shigeo Tsujii; Toshiya Itoh (J. Circuits Syst. Comput., 1991)

A Practical Secret Voting Scheme for Large Scale Elections. - Atsushi Fujioka; Tatsuaki Okamoto; Kazuo Ohta (AUSCRYPT, 1992)

An Efficient Digital Signature Scheme Based on an Elliptic Curve Over the Ring Zn. - Tatsuaki Okamoto; Atsushi Fujioka; Eiichiro Fujisaki (CRYPTO, 1992)

Secure Bit Commitment Function against Divertibility. - Kazuo Ohta; Tatsuaki Okamoto; Atsushi Fujioka (EUROCRYPT, 1992)

An Improvement on a Practical Secret Voting Scheme. - Miyako Ohkubo; Fumiaki Miura; Masayuki Abe; Atsushi Fujioka; Tatsuaki Okamoto (ISW, 1999)

Forward-Secure Authenticated-Encryption in Multi-Receiver Setting. - Kan Yasuda; Kazumaro Aoki; Eiichiro Fujisaki; Atsushi Fujioka (SECRYPT, 2006)

Strongly Secure Authenticated Key Exchange without NAXOS' Approach. - Minkyu Kim; Atsushi Fujioka; Berkant Ustaoglu (IWSEC, 2009)

Utilizing postponed ephemeral and pseudo-static keys in tripartite and identity-based key agreement protocols. - Atsushi Fujioka; Koutarou Suzuki; Berkant Ustaoglu (IACR Cryptol. ePrint Arch., 2009)

Ephemeral Key Leakage Resilient and Efficient ID-AKEs That Can Share Identities, Private and Master Keys. - Atsushi Fujioka; Koutarou Suzuki; Berkant Ustaoglu (Pairing, 2010)

Predicate-Based Authenticated Key Exchange Resilient to Ephemeral Key Leakage. - Atsushi Fujioka; Koutarou Suzuki; Kazuki Yoneyama (WISA, 2010)

Designing Efficient Authenticated Key Exchange Resilient to Leakage of Ephemeral Secret Keys. - Atsushi Fujioka; Koutarou Suzuki (CT-RSA, 2011)

Sufficient Condition for Identity-Based Authenticated Key Exchange Resilient to Leakage of Secret Keys. - Atsushi Fujioka; Koutarou Suzuki (ICISC, 2011)

Strong Security Notions for Timed-Release Public-Key Encryption Revisited. - Ryo Kikuchi; Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (ICISC, 2011)

Hierarchical ID-Based Authenticated Key Exchange Resilient to Ephemeral Key Leakage. - Atsushi Fujioka; Koutarou Suzuki; Kazuki Yoneyama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Sufficient Condition for Ephemeral Key-Leakage Resilient Tripartite Key Exchange. - Atsushi Fujioka; Mark Manulis; Koutarou Suzuki; Berkant Ustaoglu (ACISP, 2012)

Security Enhancements by OR-Proof in Identity-Based Identification. - Atsushi Fujioka; Taiichi Saito; Keita Xagawa (ACNS, 2012)

Applicability of OR-Proof Techniques to Hierarchical Identity-Based Identification. - Atsushi Fujioka; Taiichi Saito; Keita Xagawa (CANS, 2012)

Security Enhancement of Identity-Based Identification with Reversibility. - Atsushi Fujioka; Taiichi Saito; Keita Xagawa (ICICS, 2012)

Security of Sequential Multiple Encryption. - Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Strongly Secure Predicate-Based Authenticated Key Exchange: Definition and Constructions. - Atsushi Fujioka; Koutarou Suzuki; Kazuki Yoneyama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Strongly Secure Authenticated Key Exchange without NAXOS' Approach under Computational Diffie-Hellman Assumption. - Minkyu Kim; Atsushi Fujioka; Berkant Ustaoglu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Practical and post-quantum authenticated key exchange from one-way secure key encapsulation mechanism. - Atsushi Fujioka; Koutarou Suzuki; Keita Xagawa; Kazuki Yoneyama (AsiaCCS, 2013)

Characterization of Strongly Secure Authenticated Key Exchanges without NAXOS Technique. - Atsushi Fujioka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

id-eCK Secure ID-Based Authenticated Key Exchange on Symmetric and Asymmetric Pairing. - Atsushi Fujioka; Fumitaka Hoshino; Tetsutaro Kobayashi; Koutarou Suzuki; Berkant Ustaoglu; Kazuki Yoneyama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

Generic Construction of Strongly Secure Timed-Release Public-Key Encryption. - Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

Non-malleable Multiple Public-Key Encryption. - Atsushi Fujioka; Eiichiro Fujisaki; Keita Xagawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Secure Hierarchical Identity-Based Identification without Random Oracles. - Atsushi Fujioka; Taiichi Saito; Keita Xagawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Strongly secure authenticated key exchange from factoring, codes, and lattices. - Atsushi Fujioka; Koutarou Suzuki; Keita Xagawa; Kazuki Yoneyama (Des. Codes Cryptogr., 2015)

One-Round Exposure-Resilient Identity-Based Authenticated Key Agreement with Multiple Private Key Generators. - Atsushi Fujioka (Mycrypt, 2016)

Adaptive Security in Identity-Based Authenticated Key Agreement with Multiple Private Key Generators. - Atsushi Fujioka (IWSEC, 2017)

Single Private-Key Generator Security Implies Multiple Private-Key Generators Security. - Atsushi Fujioka; Kazuki Yoneyama (ProvSec, 2018)

Supersingular Isogeny Diffie-Hellman Authenticated Key Exchange. - Atsushi Fujioka; Katsuyuki Takashima; Shintaro Terada; Kazuki Yoneyama (IACR Cryptol. ePrint Arch., 2018)

One-Round Authenticated Group Key Exchange from Isogenies. - Atsushi Fujioka; Katsuyuki Takashima; Kazuki Yoneyama (IACR Cryptol. ePrint Arch., 2018)

Foreword. - Atsushi Fujioka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

Revocable Hierarchical Identity-Based Authenticated Key Exchange. - Yuki Okano; Junichi Tomida; Akira Nagai; Kazuki Yoneyama; Atsushi Fujioka; Koutarou Suzuki (ICISC, 2021)

Strongly Secure Identity-Based Key Exchange with Single Pairing Operation. - Junichi Tomida; Atsushi Fujioka; Akira Nagai; Koutarou Suzuki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Making the Identity-Based Diffie-Hellman Key Exchange Efficiently Revocable. - Kohei Nakagawa; Atsushi Fujioka; Akira Nagai; Junichi Tomida; Keita Xagawa; Kan Yasuda (LATINCRYPT, 2023)

Extended km-Anonymity for Randomization Applied to Binary Data. - Masaya Kobayashi; Atsushi Fujioka; Koji Chida (PST, 2023)

Checkable Key Generation and its Application to Hierarchical Identity-Based Signature. - Atsushi Fujioka; Takahiro Oshima; Taiichi Saito (ISITA, 2024)

Chameleon Hashing Security Enhancement to Hierarchical Identity-Based Identification. - Atsushi Fujioka; Keisuke Saito; Taiichi Saito; Keita Xagawa (ISITA, 2024)

$k^{m}$-Anonymization Meets Differential Privacy Under Sampling. - Masaya Kobayashi; Atsushi Fujioka; Koji Chida; Akira Nagai; Kan Yasuda (ISITA, 2024)

Pk-Anonymization Meets Differential Privacy. - Masaya Kobayashi; Atsushi Fujioka; Koji Chida; Akira Nagai; Kan Yasuda (PST, 2024)

Making Protocol FSU Revocable. - Kazuma Wariki; Atsushi Fujioka; Akira Nagai; Kan Yasuda (IACR Cryptol. ePrint Arch., 2025)