Toward an Easy-to-Understand Structure for Achieving Chosen Ciphertext Security from the Decisional Diffie-Hellman Assumption. - Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (ProvSec, 2010)

Public Key Encryption Schemes from the (B)CDH Assumption with Better Efficiency. - Shota Yamada 001; Yutaka Kawai; Goichiro Hanaoka; Noboru Kunihiro (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Generic Constructions for Chosen-Ciphertext Secure Attribute Based Encryption. - Shota Yamada 001; Nuttapong Attrapadung; Goichiro Hanaoka; Noboru Kunihiro (Public Key Cryptography, 2011)

Two-Dimensional Representation of Cover Free Families and Its Applications: Short Signatures and More. - Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (CT-RSA, 2012)

Verifiable Predicate Encryption and Applications to CCA Security and Anonymous Predicate Authentication. - Shota Yamada 001; Nuttapong Attrapadung; Bagus Santoso; Jacob C. N. Schuldt; Goichiro Hanaoka; Noboru Kunihiro (Public Key Cryptography, 2012)

Space Efficient Signature Schemes from the RSA Assumption. - Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (Public Key Cryptography, 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)

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

Partially Wildcarded Attribute-based Encryption and Its Efficient Construction. - Go Ohtake; Yuki Hironaka; Kenjiro Kai; Yosuke Endo; Goichiro Hanaoka; Hajime Watanabe; Shota Yamada 001; Kohei Kasamatsu; Takashi Yamakawa; Hideki Imai (SECRYPT, 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)

Chosen Ciphertext Security on Hard Membership Decision Groups: The Case of Semi-smooth Subgroups of Quadratic Residues. - Takashi Yamakawa; Shota Yamada 001; Koji Nuida; Goichiro Hanaoka; Noboru Kunihiro (SCN, 2014)

A Framework and Compact Constructions for Non-monotonic Attribute-Based Encryption. - Shota Yamada 001; Nuttapong Attrapadung; Goichiro Hanaoka; Noboru Kunihiro (IACR Cryptol. ePrint Arch., 2014)

Conversions Among Several Classes of Predicate Encryption and Applications to ABE with Various Compactness Tradeoffs. - Nuttapong Attrapadung; Goichiro Hanaoka; Shota Yamada 001 (ASIACRYPT (1), 2015)

Conversions among Several Classes of Predicate Encryption and Their Applications. - Shota Yamada 001; Nuttapong Attrapadung; Goichiro Hanaoka (IACR Cryptol. ePrint Arch., 2015)

Duality in ABE: Converting Attribute Based Encryption for Dual Predicate and Dual Policy via Computational Encodings. - Nuttapong Attrapadung; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2015)

A Framework for Identity-Based Encryption with Almost Tight Security. - Nuttapong Attrapadung; Goichiro Hanaoka; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2015)

Attribute Based Encryption with Direct Efficiency Tradeoff. - Nuttapong Attrapadung; Goichiro Hanaoka; Tsutomu Matsumoto; Tadanori Teruya; Shota Yamada 001 (ACNS, 2016)

Partitioning via Non-Linear Polynomial Functions: More Compact IBEs from Ideal Lattices and Bilinear Maps. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2016)

Adaptively Secure Identity-Based Encryption from Lattices with Asymptotically Shorter Public Parameters. - Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2016)

Adversary-dependent Lossy Trapdoor Function from Hardness of Factoring Semi-smooth RSA Subgroup Moduli. - Takashi Yamakawa; Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (IACR Cryptol. ePrint Arch., 2016)

A Survey on Identity-Based Encryption from Lattices. - Goichiro Hanaoka; Shota Yamada 001 (CREST Crypto-Math Project, 2017)

Efficient Public Trace and Revoke from Standard Assumptions: Extended Abstract. - Shweta Agrawal 001; Sanjay Bhattacherjee; Duong Hieu Phan; Damien Stehlé; Shota Yamada 001 (CCS, 2017)

Self-Bilinear Map on Unknown Order Groups from Indistinguishability Obfuscation and Its Applications. - Takashi Yamakawa; Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (Algorithmica, 2017)

Efficient Public Trace and Revoke from Standard Assumptions. - Shweta Agrawal 001; Sanjay Bhattacherjee; Duong Hieu Phan; Damien Stehlé; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2017)

Asymptotically Compact Adaptively Secure Lattice IBEs and Verifiable Random Functions via Generalized Partitioning Techniques. - Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2017)

New Security Proof for the Boneh-Boyen IBE: Tight Reduction in Unbounded Multi-Challenge Security. - Nuttapong Attrapadung; Goichiro Hanaoka; Shota Yamada 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Partially Wildcarded Ciphertext-Policy Attribute-Based Encryption and Its Performance Evaluation. - Go Ohtake; Kazuto Ogawa; Goichiro Hanaoka; Shota Yamada 001; Kohei Kasamatsu; Takashi Yamakawa; Hideki Imai (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)

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)

Tree-based Secure Comparison of Secret Shared Data. - Hiraku Morita; Nuttapong Attrapadung; Satsuya Ohata; Shota Yamada 001; Koji Nuida; Goichiro Hanaoka (ISITA, 2018)

Secure Division Protocol and Applications to Privacy-preserving Chi-squared Tests. - Hiraku Morita; Nuttapong Attrapadung; Satsuya Ohata; Koji Nuida; Shota Yamada 001; Kana Shimizu; Goichiro Hanaoka; Kiyoshi Asai (ISITA, 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)

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)

Constrained PRFs for Bit-fixing from OWFs with Constant Collusion Resistance. - Alex Davidson; Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2018)

Note on Constructing Constrained PRFs from OWFs with Constant Collusion Resistance. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2018)

Attribute-Based Encryption for Range Attributes. - Nuttapong Attrapadung; Goichiro Hanaoka; Kazuto Ogawa; Go Ohtake; Hajime Watanabe; Shota Yamada 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 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)

Attribute Based Encryption for Deterministic Finite Automata from mathsfDLIN. - Shweta Agrawal 001; Monosij Maitra; Shota Yamada 001 (TCC (2), 2019)

An Extended CTRT for AES-256. - SeongHan Shin; Shota Yamada 001; Goichiro Hanaoka; Yusuke Ishida; Atsushi Kunii; Junichi Oketani; Shimpei Kunii; Kiyoshi Tomomura (WISA, 2019)

Attribute Based Encryption (and more) for Nondeterministic Finite Automata from LWE. - Shweta Agrawal 001; Monosij Maitra; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Attribute Based Encryption for Deterministic Finite Automata from DLIN. - Shweta Agrawal 001; Monosij Maitra; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Non-Zero Inner Product Encryption Schemes from Various Assumptions: LWE, DDH and DCR. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Exploring Constructions of Compact NIZKs from Various Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2019)

Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2019)

Group Signatures without NIZK: From Lattices in the Standard Model. - Shuichi Katsumata; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2019)

Semantic Definition of Anonymity in Identity-Based Encryption and Its Relation to Indistinguishability-Based Definition. - Goichiro Hanaoka; Misaki Komatsu; Kazuma Ohara; Yusuke Sakai 001; Shota Yamada 001 (ESORICS (2), 2020)

Optimal Broadcast Encryption from LWE and Pairings in the Standard Model. - Shweta Agrawal 001; Daniel Wichs; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2020)

Optimal Broadcast Encryption from Pairings and LWE. - Shweta Agrawal 001; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2020)

CP-ABE for Circuits (and more) in the Symmetric Key Setting. - Shweta Agrawal 001; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2020)

Adaptively Secure Constrained Pseudorandom Functions in the Standard Model. - Alex Davidson; Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2020)

Adaptively Secure Inner Product Encryption from LWE. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2020)

Generic hardness of inversion on ring and its relation to self-bilinear map. - Takashi Yamakawa; Shota Yamada 001; Goichiro Hanaoka; Noboru Kunihiro (Theor. Comput. Sci., 2020)

Non-interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions. - Reo Eriguchi; Kazuma Ohara; Shota Yamada 001; Koji Nuida (CRYPTO (2), 2021)

Functional Encryption for Turing Machines with Dynamic Bounded Collusion from LWE. - Shweta Agrawal 001; Monosij Maitra; Narasimha Sai Vempati; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2021)

Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 2021)

Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model. - Shuichi Katsumata; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 2021)

Cryptanalysis of Boyen's attribute-based encryption scheme in TCC 2013. - Shweta Agrawal 001; Rajarshi Biswas; Ryo Nishimaki; Keita Xagawa; Xiang Xie; Shota Yamada 001 (Des. Codes Cryptogr., 2022)

Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions. - Shweta Agrawal 001; Fuyuki Kitagawa; Anuja Modi; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

Trace and Revoke with Optimal Parameters from Polynomial Hardness. - Shweta Agrawal 001; Simran Kumari; Anshu Yadav; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2022)

Multi-Input Attribute Based Encryption and Predicate Encryption. - Shweta Agrawal 001; Anshu Yadav; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2022)

How to Extend CTRT for AES-256 and AES-192. - SeongHan Shin; Shota Yamada 001; Goichiro Hanaoka; Yusuke Ishida; Atsushi Kunii; Junichi Oketani; Shimpei Kunii; Kiyoshi Tomomura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Broadcast, Trace and Revoke with Optimal Parameters from Polynomial Hardness. - Shweta Agrawal 001; Simran Kumari; Anshu Yadav; Shota Yamada 001 (EUROCRYPT (3), 2023)

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)

Public Key Encryption with Secure Key Leasing. - Shweta Agrawal 001; Fuyuki Kitagawa; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Constant Input Attribute Based (and Predicate) Encryption from Evasive and Tensor LWE. - Shweta Agrawal 001; Melissa Rossi; Anshu Yadav; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2023)

Direct computation of branching programs and its applications to more efficient lattice-based cryptography. - Shuichi Katsumata; Toi Tomita; Shota Yamada 001 (Des. Codes Cryptogr., 2023)

Registered FE Beyond Predicates: (Attribute-Based) Linear Functions and More. - Pratish Datta; Tapas Pal; Shota Yamada 001 (ASIACRYPT (1), 2024)

Characterizing the integer points in 2-decomposable polyhedra by closedness under operations. - Kei Kimura; Kazuhisa Makino; Shota Yamada 001; Ryo Yoshizumi (CoRR, 2024)

Compact Pseudorandom Functional Encryption from Evasive LWE. - Shweta Agrawal 001; Simran Kumari; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2024)

Pseudorandom Multi-Input Functional Encryption and Applications. - Shweta Agrawal 001; Simran Kumari; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2024)

Tighter Adaptive IBEs and VRFs: Revisiting Waters' Artificial Abort. - Goichiro Hanaoka; Shuichi Katsumata; Kei Kimura; Kaoru Takemure; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2024)

Attribute-Based Signatures for Circuits with Optimal Parameter Size from Standard Assumptions. - Ryuya Hayashi; Yusuke Sakai 001; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2024)

Compact NIZKs from Standard Assumptions on Bilinear Maps. - Shuichi Katsumata; Ryo Nishimaki; Shota Yamada 001; Takashi Yamakawa (J. Cryptol., 2024)

Attribute Based Encryption for Turing Machines from Lattices. - Shweta Agrawal 001; Simran Kumari; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2025)

Evasive LWE: Attacks, Variants & Obfustopia. - Shweta Agrawal 001; Anuja Modi; Anshu Yadav; Shota Yamada 001 (IACR Cryptol. ePrint Arch., 2025)