STM Publications in Japan - a market analysis. - Takashi Yamakawa (Learn. Publ., 1998)

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)

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)

A Short Fail-Stop Signature Scheme from Factoring. - Takashi Yamakawa; Nobuaki Kitajima; Takashi Nishide; Goichiro Hanaoka; Eiji Okamoto (ProvSec, 2014)

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)

Generalized Hardness Assumption for Self-bilinear Map with Auxiliary Information. - Takashi Yamakawa; Goichiro Hanaoka; Noboru Kunihiro (ACISP (2), 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)

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)

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

Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. - Tsunekazu Saito; Keita Xagawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 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)

Towards Ideal Self-bilinear Map. - Takashi Yamakawa (AsiaPKC@AsiaCCS, 2018)

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

Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2018)

(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model. - Keita Xagawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 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)

Quantum Random Oracle Model with Auxiliary Input. - Minki Hhan; Keita Xagawa; Takashi Yamakawa (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)

Leakage-resilient Identity-based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio. - Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2019)

A Black-Box Approach to Post-Quantum Zero-Knowledge in Constant Round. - Nai-Hui Chia; Kai-Min Chung; Takashi Yamakawa (CoRR, 2020)

Classical Verification of Quantum Computations with Efficient Verifier. - Nai-Hui Chia; Kai-Min Chung; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2020)

A Black-Box Approach to Post-Quantum Zero-Knowledge in Constant Rounds. - Nai-Hui Chia; Kai-Min Chung; Takashi Yamakawa (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)

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

Secure Software Leasing from Standard Assumptions. - Fuyuki Kitagawa; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2020)

A Note on Separating Classical and Quantum Random Oracles. - Takashi Yamakawa; Mark Zhandry (IACR Cryptol. ePrint Arch., 2020)

Classical vs Quantum Random Oracles. - Takashi Yamakawa; Mark Zhandry (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)

On the Impossibility of Post-Quantum Black-Box Zero-Knowledge in Constant Round. - Nai-Hui Chia; Kai-Min Chung; Qipeng Liu 001; Takashi Yamakawa (FOCS, 2021)

Classically Verifiable (Dual-Mode) NIZK for QMA with Preprocessing. - Tomoyuki Morimae; Takashi Yamakawa (CoRR, 2021)

On the Impossibility of Post-Quantum Black-Box Zero-Knowledge in Constant Rounds. - Nai-Hui Chia; Kai-Min Chung; Qipeng Liu 001; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Post-Quantum Simulatable Extraction with Minimal Assumptions: Black-Box and Constant-Round. - Nai-Hui Chia; Kai-Min Chung; Xiao Liang 014; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication. - Taiga Hiroka; Tomoyuki Morimae; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Certified Everlasting Zero-Knowledge Proof for QMA. - Taiga Hiroka; Tomoyuki Morimae; Ryo Nishimaki; Takashi Yamakawa (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)

Quantum commitments and signatures without one-way functions. - Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2021)

Quantum Encryption with Certified Deletion: Public Key and Attribute-Based. - Ryo Nishimaki; 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)

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)

From the Hardness of Detecting Superpositions to Cryptography: Quantum Public Key Encryption and Commitments. - Minki Hhan; Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

Certified Everlasting Functional Encryption. - Taiga Hiroka; Tomoyuki Morimae; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

A New Approach to Post-Quantum Non-Malleability. - Xiao Liang 014; Omkant Pandey; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

Proofs of Quantumness from Trapdoor Permutations. - Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

Classically Verifiable NIZK for QMA with Preprocessing. - Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

One-Wayness in Quantum Cryptography. - Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2022)

Classical vs Quantum Advice under Classically-Accessible Oracle. - Xingjian Li 006; Qipeng Liu 001; Angelos Pelecanos; Takashi Yamakawa (CoRR, 2023)

A Note on Output Length of One-Way State Generators. - Minki Hhan; Tomoyuki Morimae; Takashi Yamakawa (CoRR, 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)

Obfuscation of Pseudo-Deterministic Quantum Circuits. - James Bartusek; Fuyuki Kitagawa; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Quantum Complexity for Discrete Logarithms and Related Problems. - Minki Hhan; Takashi Yamakawa; Aaram Yun (IACR Cryptol. ePrint Arch., 2023)

Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More. - Taiga Hiroka; Fuyuki Kitagawa; Tomoyuki Morimae; Ryo Nishimaki; Tapas Pal; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Robust Combiners and Universal Constructions for Quantum Cryptography. - Taiga Hiroka; Fuyuki Kitagawa; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions. - Fuyuki Kitagawa; Tomoyuki Morimae; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Publicly Verifiable Deletion from Minimal Assumptions. - Fuyuki Kitagawa; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Unconditionally Secure Commitments with Quantum Auxiliary Inputs. - Tomoyuki Morimae; Barak Nehoran; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Revocable Quantum Digital Signatures. - Tomoyuki Morimae; Alexander Poremba; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

Quantum Advantage from One-Way Functions. - Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2023)

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

Classical vs Quantum Advice and Proofs Under Classically-Accessible Oracle. - Xingjian Li 006; Qipeng Liu 001; Angelos Pelecanos; Takashi Yamakawa (ITCS, 2024)

Exponential Quantum One-Wayness and EFI Pairs. - Giulio Malavolta; Tomoyuki Morimae; Michael Walter 005; Takashi Yamakawa (SCN (1), 2024)

Untelegraphable Encryption and its Applications. - Jeffrey Champion; Fuyuki Kitagawa; Ryo Nishimaki; Takashi Yamakawa (CoRR, 2024)

A New World in the Depths of Microcrypt: Separating OWSGs and Quantum Money from QEFID. - Amit Behera; Giulio Malavolta; Tomoyuki Morimae; Tamer Mour; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

Anonymous Public-Key Quantum Money and Quantum Voting. - Alper Çakan; Vipul Goyal; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

CountCrypt: Quantum Cryptography between QCMA and PP. - Eli Goldin; Tomoyuki Morimae; Saachi Mutreja; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

A Simple Framework for Secure Key Leasing. - Fuyuki Kitagawa; Tomoyuki Morimae; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

Cryptographic Characterization of Quantum Advantage. - Tomoyuki Morimae; Yuki Shirakawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

Quantum Unpredictability. - Tomoyuki Morimae; Shogo Yamada; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2024)

Verifiable Quantum Advantage without Structure. - Takashi Yamakawa; Mark Zhandry (J. ACM, 2024)

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

Finding Collisions in a Quantum World: Quantum Black-Box Separation of Collision-Resistance and One-Wayness. - Akinori Hosoyamada; Takashi Yamakawa (J. Cryptol., 2024)

Non-committing Identity Based Encryption: Constructions and Applications. - Rishab Goyal; Fuyuki Kitagawa; Venkata Koppula; Ryo Nishimaki; Mahesh Sreekumar Rajasree; Takashi Yamakawa (PKC (1), 2025)

MicroCrypt Assumptions with Quantum Input Sampling and Pseudodeterminism: Constructions and Separations. - Mohammed Barhoush; Ryo Nishimaki; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)

The Round Complexity of Black-Box Post-Quantum Secure Computation. - Rohit Chatterjee; Xiao Liang 014; Omkant Pandey; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)

Quantum Lifting for Invertible Permutations and Ideal Ciphers. - Alexandru Cojocaru; Minki Hhan; Qipeng Liu 001; Takashi Yamakawa; Aaram Yun (IACR Cryptol. ePrint Arch., 2025)

Foundations of Single-Decryptor Encryption. - Fuyuki Kitagawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)

Copy Protecting Cryptographic Functionalities over Entropic Inputs. - Fuyuki Kitagawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)

Almost-Total Puzzles and Their Applications. - Xiao Liang 014; Omkant Pandey; Yuhao Tang; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)

From Worst-Case Hardness of NP to Quantum Cryptography via Quantum Indistinguishability Obfuscation. - Tomoyuki Morimae; Yuki Shirakawa; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2025)