A Practical Provider Authentication System for Bidirectional Broadcast Service. - Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Hideki Imai (KES (3), 2007)

A CDH-Based Strongly Unforgeable Signature Without Collision Resistant Hash Function. - Takahiro Matsuda 002; Nuttapong Attrapadung; Goichiro Hanaoka; Kanta Matsuura; Hideki Imai (ProvSec, 2007)

Simple CCA-Secure Public Key Encryption from Any Non-Malleable Identity-Based Encryption. - Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Hideki Imai (ICISC, 2008)

A Strongly Unforgeable Signature under the CDH Assumption without Collision Resistant Hash Functions. - Takahiro Matsuda 002; Nuttapong Attrapadung; Goichiro Hanaoka; Kanta Matsuura; Hideki Imai (IEICE Trans. Inf. Syst., 2008)

An Efficient Encapsulation Scheme from Near Collision Resistant Pseudorandom Generators and Its Application to IBE-to-PKE Transformations. - Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura; Hideki Imai (CT-RSA, 2009)

Efficient Constructions of Signcryption Schemes and Signcryption Composability. - Takahiro Matsuda 002; Kanta Matsuura; Jacob C. N. Schuldt (INDOCRYPT, 2009)

A Generic Construction of Timed-Release Encryption with Pre-open Capability. - Yasumasa Nakai; Takahiro Matsuda 002; Wataru Kitada; Kanta Matsuura (IWSEC, 2009)

Efficient Generic Constructions of Timed-Release Encryption with Pre-open Capability. - Takahiro Matsuda 002; Yasumasa Nakai; Kanta Matsuura (Pairing, 2010)

Efficient Generic Constructions of Signcryption with Insider Security in the Multi-user Setting. - Daiki Chiba 002; Takahiro Matsuda 002; Jacob C. N. Schuldt; Kanta Matsuura (ACNS, 2011)

Parallel Decryption Queries in Bounded Chosen Ciphertext Attacks. - Takahiro Matsuda 002; Kanta Matsuura (Public Key Cryptography, 2011)

On Black-Box Separations among Injective One-Way Functions. - Takahiro Matsuda 002; Kanta Matsuura (TCC, 2011)

Generic Construction of Chosen Ciphertext Secure Proxy Re-Encryption. - Goichiro Hanaoka; Yutaka Kawai; Noboru Kunihiro; Takahiro Matsuda 002; Jian Weng 001; Rui Zhang 002; Yunlei Zhao (CT-RSA, 2012)

Ciphertext Policy Multi-dimensional Range Encryption. - Kohei Kasamatsu; Takahiro Matsuda 002; Goichiro Hanaoka; Hideki Imai (ICISC, 2012)

Group Signatures with Message-Dependent Opening. - Yusuke Sakai 001; Keita Emura; Goichiro Hanaoka; Yutaka Kawai; Takahiro Matsuda 002; Kazumasa Omote (Pairing, 2012)

Relations between Constrained and Bounded Chosen Ciphertext Security for Key Encapsulation Mechanisms. - Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura (Public Key Cryptography, 2012)

Time-Specific Encryption from Forward-Secure Encryption. - Kohei Kasamatsu; Takahiro Matsuda 002; Keita Emura; Nuttapong Attrapadung; Goichiro Hanaoka; Hideki Imai (SCN, 2012)

On the Impossibility of Constructing Efficient Key Encapsulation and Programmable Hash Functions in Prime Order Groups. - Goichiro Hanaoka; Takahiro Matsuda 002; Jacob C. N. Schuldt (IACR Cryptol. ePrint Arch., 2012)

Efficient variants of the Naor-Yung and Dolev-Dwork-Naor transforms for CCA secure key encapsulation mechanism. - Takashi Yamakawa; Shota Yamada 001; Takahiro Matsuda 002; Goichiro Hanaoka; Noboru Kunihiro (AsiaPKC@AsiaCCS, 2013)

Reducing Public Key Sizes in Bounded CCA-Secure KEMs with Optimal Ciphertext Length. - Takashi Yamakawa; Shota Yamada 001; Takahiro Matsuda 002; Goichiro Hanaoka; Noboru Kunihiro (ISC, 2013)

Achieving Chosen Ciphertext Security from Detectable Public Key Encryption Efficiently via Hybrid Encryption. - Takahiro Matsuda 002; Goichiro Hanaoka (IWSEC, 2013)

Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption. - Keita Emura; Goichiro Hanaoka; Go Ohtake; Takahiro Matsuda 002; Shota Yamada 001 (Public Key Cryptography, 2013)

Key Encapsulation Mechanisms from Extractable Hash Proof Systems, Revisited. - Takahiro Matsuda 002; Goichiro Hanaoka (Public Key Cryptography, 2013)

Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption. - Keita Emura; Goichiro Hanaoka; Koji Nuida; Go Ohtake; Takahiro Matsuda 002; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2013)

Anonymous Data Collection System with Mediators. - Hiromi Arai; Keita Emura; Takahiro Matsuda 002 (BalkanCryptSec, 2014)

Efficient Key Dependent Message Security Amplification Against Chosen Ciphertext Attacks. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (ICISC, 2014)

Chosen Ciphertext Security via UCE. - Takahiro Matsuda 002; Goichiro Hanaoka (Public Key Cryptography, 2014)

On the Impossibility of Basing Public-Coin One-Way Permutations on Trapdoor Permutations. - Takahiro Matsuda 002 (TCC, 2014)

Chosen Ciphertext Security via Point Obfuscation. - Takahiro Matsuda 002; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2014)

Tree-Structured Composition of Homomorphic Encryption: How to Weaken Underlying Assumptions. - Koji Nuida; Goichiro Hanaoka; Takahiro Matsuda 002 (IACR Cryptol. ePrint Arch., 2014)

A Signature Scheme with a Fuzzy Private Key. - Kenta Takahashi; Takahiro Matsuda 002; Takao Murakami; Goichiro Hanaoka; Masakatsu Nishigaki (ACNS, 2015)

Completeness of Single-Bit Projection-KDM Security for Public Key Encryption. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (CT-RSA, 2015)

Constructing and Understanding Chosen Ciphertext Security via Puncturable Key Encapsulation Mechanisms. - Takahiro Matsuda 002; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2015)

An Asymptotically Optimal Method for Converting Bit Encryption to Multi-Bit Encryption. - Takahiro Matsuda 002; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2015)

On the Security of the Schnorr Signature Scheme and DSA against Related-Key Attacks. - Hiraku Morita; Jacob C. N. Schuldt; Takahiro Matsuda 002; Goichiro Hanaoka; Tetsu Iwata (IACR Cryptol. ePrint Arch., 2015)

Re-encryption Verifiability: How to Detect Malicious Activities of a Proxy in Proxy Re-encryption. - Satsuya Ohata; Yutaka Kawai; Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura (IACR Cryptol. ePrint Arch., 2015)

Fuzzy Signatures: Relaxing Requirements and a New Construction. - Takahiro Matsuda 002; Kenta Takahashi; Takao Murakami; Goichiro Hanaoka (ACNS, 2016)

Signatures Resilient to Uninvertible Leakage. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (SCN, 2016)

Trading Plaintext-Awareness for Simulatability to Achieve Chosen Ciphertext Security. - Takahiro Matsuda 002; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2016)

On the Key Dependent Message Security of the Fujisaki-Okamoto Constructions. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2016)

Provably Secure Password Reset Protocol: Model, Definition, and Generic Construction. - Satsuya Ohata; Takahiro Matsuda 002; Kanta Matsuura (IACR Cryptol. ePrint Arch., 2016)

How to Obtain Fully Structure-Preserving (Automorphic) Signatures from Structure-Preserving Ones. - Yuyu Wang 001; Zongyang Zhang; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2016)

Time-specific encryption from forward-secure encryption: generic and direct constructions. - Kohei Kasamatsu; Takahiro Matsuda 002; Keita Emura; Nuttapong Attrapadung; Goichiro Hanaoka; Hideki Imai (Int. J. Inf. Sec., 2016)

Efficient key encapsulation mechanisms with tight security reductions to standard assumptions in the two security models. - Yoshikazu Hanatani; Goichiro Hanaoka; Takahiro Matsuda 002; Takashi Yamakawa (Secur. Commun. Networks, 2016)

Signature Schemes with a Fuzzy Private Key. - Kenta Takahashi; Takahiro Matsuda 002; Takao Murakami; Goichiro Hanaoka; Masakatsu Nishigaki (IACR Cryptol. ePrint Arch., 2017)

On the Security of Non-Interactive Key Exchange against Related-Key Attacks. - Hiraku Morita; Jacob C. N. Schuldt; Takahiro Matsuda 002; Goichiro Hanaoka; Tetsu Iwata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

On the Security of Schnorr Signatures, DSA, and ElGamal Signatures against Related-Key Attacks. - Hiraku Morita; Jacob C. N. Schuldt; Takahiro Matsuda 002; Goichiro Hanaoka; Tetsu Iwata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Private Similarity Searchable Encryption for Euclidean Distance. - Yuji Unagami; Natsume Matsuzaki; Shota Yamada 001; Nuttapong Attrapadung; Takahiro Matsuda 002; Goichiro Hanaoka (IEICE Trans. Inf. Syst., 2017)

Constrained PRFs for mathrmNC^1 in Traditional Groups. - Nuttapong Attrapadung; Takahiro Matsuda 002; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (CRYPTO (2), 2018)

On the Security of Linear Sketch Schemes against Recovering Attacks. - Takahiro Matsuda 002; Kenta Takahashi; Goichiro Hanaoka (ICETE (2), 2018)

A New Key Encapsulation Combiner. - Takahiro Matsuda 002; Jacob C. N. Schuldt (ISITA, 2018)

Embedding Lemmas for Functional Encryption. - Ryo Kato; Naohisa Nishida; Ryo Hirano; Tatsumi Oba; Yuji Unagami; Shota Yamada 001; Tadanori Teruya; Nuttapong Attrapadung; Takahiro Matsuda 002; Goichiro Hanaoka (ISITA, 2018)

Provably Secure Password Reset Protocol: Model, Definition, and Construction. - Satsuya Ohata; Takahiro Matsuda 002; Kanta Matsuura (TrustCom/BigDataSE, 2018)

Chosen ciphertext secure keyed-homomorphic public-key cryptosystems. - Keita Emura; Goichiro Hanaoka; Koji Nuida; Go Ohtake; Takahiro Matsuda 002; Shota Yamada 001 (Des. Codes Cryptogr., 2018)

Related Randomness Security for Public Key Encryption, Revisited. - Takahiro Matsuda 002; Jacob C. N. Schuldt (IACR Cryptol. ePrint Arch., 2018)

Constrained PRFs for NC1 in Traditional Groups. - Nuttapong Attrapadung; Takahiro Matsuda 002; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2018)

Adaptively Single-Key Secure Constrained PRFs for NC1. - Nuttapong Attrapadung; Takahiro Matsuda 002; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2018)

Efficient Bit-Decomposition and Modulus-Conversion Protocols with an Honest Majority. - Ryo Kikuchi; Dai Ikarashi; Takahiro Matsuda 002; Koki Hamada; Koji Chida (IACR Cryptol. ePrint Arch., 2018)

Memory Lower Bounds of Reductions Revisited. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

Impossibility on Tamper-Resilient Cryptography with Uniqueness Properties. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

More Constructions of Re-Splittable Threshold Public Key Encryption. - Satsuya Ohata; Takahiro Matsuda 002; Goichiro Hanaoka; Kanta Matsuura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

Tag-KEM/DEM Framework for Public-Key Encryption with Non-Interactive Opening. - Yusuke Sakai 001; Takahiro Matsuda 002; Goichiro Hanaoka (IEICE Trans. Inf. Syst., 2018)

Adaptively Single-Key Secure Constrained PRFs for mathrm NC^1. - Nuttapong Attrapadung; Takahiro Matsuda 002; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (Public Key Cryptography (2), 2019)

MOBIUS: Model-Oblivious Binarized Neural Networks. - Hiromasa Kitai; Jason Paul Cruz; Naoto Yanai; Naohisa Nishida; Tatsumi Oba; Yuji Unagami; Tadanori Teruya; Nuttapong Attrapadung; Takahiro Matsuda 002; Goichiro Hanaoka (IEEE Access, 2019)

Improved Security Evaluation Techniques for Imperfect Randomness from Arbitrary Distributions. - Takahiro Matsuda 002; Kenta Takahashi; Takao Murakami; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 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 002; Yusuke Sakai 001; Jacob C. N. Schuldt (IACR Cryptol. ePrint Arch., 2019)

CPA-to-CCA Transformation for KDM Security. - Fuyuki Kitagawa; Takahiro Matsuda 002 (IACR Cryptol. ePrint Arch., 2019)

Simple and Efficient KDM-CCA Secure Public Key Encryption. - Fuyuki Kitagawa; Takahiro Matsuda 002; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2019)

A New Combiner for Key Encapsulation Mechanisms. - Goichiro Hanaoka; Takahiro Matsuda 002; Jacob C. N. Schuldt (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

Proxy Re-Encryption That Supports Homomorphic Operations for Re-Encrypted Ciphertexts. - Yutaka Kawai; Takahiro Matsuda 002; Takato Hirano; Yoshihiro Koseki; Goichiro Hanaoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

Group Signatures with Message-Dependent Opening: Formal Definitions and Constructions. - Keita Emura; Goichiro Hanaoka; Yutaka Kawai; Takahiro Matsuda 002; Kazuma Ohara; Kazumasa Omote; Yusuke Sakai 001 (Secur. Commun. Networks, 2019)

Simulation-based receiver selective opening CCA secure PKE from standard computational assumptions. - Keisuke Hara; Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (Theor. Comput. Sci., 2019)

Circular Security Is Complete for KDM Security. - Fuyuki Kitagawa; Takahiro Matsuda 002 (IACR Cryptol. ePrint Arch., 2020)

NIZK from SNARG. - Fuyuki Kitagawa; Takahiro Matsuda 002; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2020)

Efficient Secure Neural Network Prediction Protocol Reducing Accuracy Degradation. - Naohisa Nishida; Tatsumi Oba; Yuji Unagami; Jason Paul Cruz; Naoto Yanai; Tadanori Teruya; Nuttapong Attrapadung; Takahiro Matsuda 002; Goichiro Hanaoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

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

Oblivious Linear Group Actions and Applications. - Nuttapong Attrapadung; Goichiro Hanaoka; Takahiro Matsuda 002; Hiraku Morita; Kazuma Ohara; Jacob C. N. Schuldt; Tadanori Teruya; Kazunari Tozawa (CCS, 2021)

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)

Generic transformation from broadcast encryption to round-optimal deniable ring authentication. - Keisuke Hara; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (Des. Codes Cryptogr., 2022)

Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. - Keisuke Hara; Takahiro Matsuda 002; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

CCA Security and Trapdoor Functions via Key-Dependent-Message Security. - Fuyuki Kitagawa; Takahiro Matsuda 002; Keisuke Tanaka (J. Cryptol., 2022)

Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation. - Nuttapong Attrapadung; Koki Hamada; Dai Ikarashi; Ryo Kikuchi; Takahiro Matsuda 002; Ibuki Mishina; Hiraku Morita; Jacob C. N. Schuldt (Proc. Priv. Enhancing Technol., 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)

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)

Two-Dimensional Dynamic Fusion for Continuous Authentication. - Nuttapong Attrapadung; Goichiro Hanaoka; Haochen M. Kotoi-Xie; Takahiro Matsuda 002; Takumi Moriyama; Takao Murakami; Hidenori Nakamura; Jacob C. N. Schuldt; Masaaki Tokuyama; Jing Zhang (IJCB, 2023)

Chosen Ciphertext Security via BARGs. - Takahiro Matsuda 002 (IACR Cryptol. ePrint Arch., 2023)

NIZK from SNARGs. - Fuyuki Kitagawa; Takahiro Matsuda 002; Takashi Yamakawa (J. Cryptol., 2023)

Maliciously circuit-private multi-key FHE and MPC based on LWE. - Nuttapong Attrapadung; Goichiro Hanaoka; Ryo Hiromasa; Takahiro Matsuda 002; Jacob C. N. Schuldt (Des. Codes Cryptogr., 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)

On the Implications from Updatable Encryption to Public-Key Cryptographic Primitives. - Yuichi Tanishita; Ryuya Hayashi; Ryu Ishii; Takahiro Matsuda 002; Kanta Matsuura (ACISP (1), 2024)

Privacy-Preserving Verifiable CNNs. - Nuttapong Attrapadung; Goichiro Hanaoka; Ryo Hiromasa; Yoshihiro Koseki; Takahiro Matsuda 002; Yutaro Nishida; Yusuke Sakai 001; Jacob C. N. Schuldt; Satoshi Yasuda (ACNS (2), 2024)

Updatable Encryption Secure Against Randomness Compromise. - Yuichi Tanishita; Ryuya Hayashi; Ryu Ishii; Takahiro Matsuda 002; Kanta Matsuura (CANS (2), 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)

Adaptive TDF from PKE with Randomness Recoverability and Pseudorandom Ciphertext Property. - Fuyuki Kitagawa; Takahiro Matsuda 002 (IACR Cryptol. ePrint Arch., 2025)

Fast and Private 1-to-$N$ Face Identification Protocols. - Nuttapong Attrapadung; Reo Eriguchi; Goichiro Hanaoka; Takahiro Matsuda 002; Naohisa Nishida; Tatsumi Oba; Jacob C. N. Schuldt; Koki Tejima; Tadanori Teruya; Yuji Unagami; Naoto Yanai (IEEE Open J. Comput. Soc., 2025)