Takashi Yamakawa

188 papers A* 5A 2C 4Misc 1Journal 123Unranked 53
YearRankTypeTitle / Venue / Authors
2026 J jnl
Separating Non-Interactive Classical Verification of Quantum Computation from Falsifiable Assumptions.
CoRR
Mohammed Barhoush, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2026 J jnl
Separating Non-Interactive Classical Verification of Quantum Computation from Falsifiable Assumptions.
IACR Cryptol. ePrint Arch.
Mohammed Barhoush, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2025 — conf
A New World in the Depths of Microcrypt: Separating OWSGs and Quantum Money from QEFID.
EUROCRYPT (7)
Amit Behera, Giulio Malavolta, Tomoyuki Morimae, Tamer Mour, Takashi Yamakawa
2025 J jnl
A Note on Output Length of One-Way State Generators and EFIs.
IACR Commun. Cryptol.
Minki Hhan, Tomoyuki Morimae, Takashi Yamakawa
2025 — conf
A Simple Framework for Secure Key Leasing.
EUROCRYPT (3)
Fuyuki Kitagawa, Tomoyuki Morimae, Takashi Yamakawa
2025 J jnl
A Unified Approach to Quantum Key Leasing with a Classical Lessor.
CoRR
Fuyuki Kitagawa, Jiahui Liu, Shota Yamada, Takashi Yamakawa
2025 J jnl
A Unified Approach to Quantum Key Leasing with a Classical Lessor.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Jiahui Liu, Shota Yamada, Takashi Yamakawa
2025 — conf
Almost-Total Puzzles and Their Applications.
ASIACRYPT (8)
Xiao Liang, Omkant Pandey, Yuhao Tang, Takashi Yamakawa
2025 J jnl
Almost-Total Puzzles and Their Applications.
IACR Cryptol. ePrint Arch.
Xiao Liang, Omkant Pandey, Yuhao Tang, Takashi Yamakawa
2025 J jnl
Copy Protecting Cryptographic Functionalities over Entropic Inputs.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Takashi Yamakawa
2025 J jnl
Copy-Protection from Unclonable Puncturable Obfuscation, Revisited.
IACR Cryptol. ePrint Arch.
Prabhanjan Ananth, Amit Behera, Zikuan Huang, Fuyuki Kitagawa, Takashi Yamakawa
2025 A* conf
Cryptographic Characterization of Quantum Advantage.
STOC
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2025 — conf
Foundations of Single-Decryptor Encryption.
TCC (3)
Fuyuki Kitagawa, Takashi Yamakawa
2025 J jnl
Foundations of Single-Decryptor Encryption.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Takashi Yamakawa
2025 J jnl
From Worst-Case Hardness of NP to Quantum Cryptography via Quantum Indistinguishability Obfuscation.
CoRR
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2025 J jnl
From Worst-Case Hardness of NP to Quantum Cryptography via Quantum Indistinguishability Obfuscation.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2025 — conf
MicroCrypt Assumptions with Quantum Input Sampling and Pseudodeterminism: Constructions and Separations.
ASIACRYPT (8)
Mohammed Barhoush, Ryo Nishimaki, Takashi Yamakawa
2025 J jnl
MicroCrypt Assumptions with Quantum Input Sampling and Pseudodeterminism: Constructions and Separations.
CoRR
Mohammed Barhoush, Ryo Nishimaki, Takashi Yamakawa
2025 J jnl
MicroCrypt Assumptions with Quantum Input Sampling and Pseudodeterminism: Constructions and Separations.
IACR Cryptol. ePrint Arch.
Mohammed Barhoush, Ryo Nishimaki, Takashi Yamakawa
2025 J jnl
Multi-Copy Security in Unclonable Cryptography.
CoRR
Alper Çakan, Vipul Goyal, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2025 J jnl
Multi-Copy Security in Unclonable Cryptography.
IACR Cryptol. ePrint Arch.
Alper Çakan, Vipul Goyal, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2025 — conf
Non-committing Identity Based Encryption: Constructions and Applications.
PKC (1)
Rishab Goyal, Fuyuki Kitagawa, Venkata Koppula, Ryo Nishimaki, Mahesh Sreekumar Rajasree, Takashi Yamakawa
2025 J jnl
Proofs of quantum memory.
CoRR
Minki Hhan, Tomoyuki Morimae, Yasuaki Okinaka, Takashi Yamakawa
2025 J jnl
Proofs of quantum memory.
IACR Cryptol. ePrint Arch.
Minki Hhan, Tomoyuki Morimae, Yasuaki Okinaka, Takashi Yamakawa
2025 J jnl
Quantum Cryptography and Hardness of Non-Collapsing Measurements.
CoRR
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2025 J jnl
Quantum Cryptography and Hardness of Non-Collapsing Measurements.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2025 — conf
Quantum Lifting for Invertible Permutations and Ideal Ciphers.
CRYPTO (2)
Alexandru Cojocaru, Minki Hhan, Qipeng Liu, Takashi Yamakawa, Aaram Yun
2025 J jnl
Quantum Lifting for Invertible Permutations and Ideal Ciphers.
CoRR
Alexandru Cojocaru, Minki Hhan, Qipeng Liu, Takashi Yamakawa, Aaram Yun
2025 J jnl
Quantum Lifting for Invertible Permutations and Ideal Ciphers.
IACR Cryptol. ePrint Arch.
Alexandru Cojocaru, Minki Hhan, Qipeng Liu, Takashi Yamakawa, Aaram Yun
2025 — conf
Round-Efficient Composable Two-Party Quantum Computation.
ASIACRYPT (8)
Vipul Goyal, Xiao Liang, Omkant Pandey, Yuhao Tang, Takashi Yamakawa
2025 J jnl
Round-Efficient Composable Two-Party Quantum Computation.
IACR Cryptol. ePrint Arch.
Vipul Goyal, Xiao Liang, Omkant Pandey, Yuhao Tang, Takashi Yamakawa
2025 J jnl
The Round Complexity of Black-Box Post-Quantum Secure Computation.
CoRR
Rohit Chatterjee, Xiao Liang, Omkant Pandey, Takashi Yamakawa
2025 J jnl
The Round Complexity of Black-Box Post-Quantum Secure Computation.
IACR Cryptol. ePrint Arch.
Rohit Chatterjee, Xiao Liang, Omkant Pandey, Takashi Yamakawa
2025 — conf
The Round Complexity of Black-Box Post-quantum Secure Computation.
CRYPTO (4)
Rohit Chatterjee, Xiao Liang, Omkant Pandey, Takashi Yamakawa
2025 — conf
Untelegraphable Encryption and its Applications.
TCC (3)
Jeffrey Champion, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2025 J jnl
Untelegraphable Encryption and its Applications.
IACR Cryptol. ePrint Arch.
Jeffrey Champion, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2024 J jnl
A New World in the Depths of Microcrypt: Separating OWSGs and Quantum Money from QEFID.
CoRR
Amit Behera, Giulio Malavolta, Tomoyuki Morimae, Tamer Mour, Takashi Yamakawa
2024 J jnl
A New World in the Depths of Microcrypt: Separating OWSGs and Quantum Money from QEFID.
IACR Cryptol. ePrint Arch.
Amit Behera, Giulio Malavolta, Tomoyuki Morimae, Tamer Mour, Takashi Yamakawa
2024 J jnl
A Simple Framework for Secure Key Leasing.
CoRR
Fuyuki Kitagawa, Tomoyuki Morimae, Takashi Yamakawa
2024 J jnl
A Simple Framework for Secure Key Leasing.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Tomoyuki Morimae, Takashi Yamakawa
2024 J jnl
Anonymous Public-Key Quantum Money and Quantum Voting.
CoRR
Alper Çakan, Vipul Goyal, Takashi Yamakawa
2024 J jnl
Anonymous Public-Key Quantum Money and Quantum Voting.
IACR Cryptol. ePrint Arch.
Alper Çakan, Vipul Goyal, Takashi Yamakawa
2024 — conf
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More.
EUROCRYPT (3)
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
2024 A conf
Classical vs Quantum Advice and Proofs Under Classically-Accessible Oracle.
ITCS
Xingjian Li, Qipeng Liu, Angelos Pelecanos, Takashi Yamakawa
2024 J jnl
Compact NIZKs from Standard Assumptions on Bilinear Maps.
J. Cryptol.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2024 J jnl
CountCrypt: Quantum Cryptography between QCMA and PP.
CoRR
Eli Goldin, Tomoyuki Morimae, Saachi Mutreja, Takashi Yamakawa
2024 J jnl
CountCrypt: Quantum Cryptography between QCMA and PP.
IACR Cryptol. ePrint Arch.
Eli Goldin, Tomoyuki Morimae, Saachi Mutreja, Takashi Yamakawa
2024 J jnl
Cryptographic Characterization of Quantum Advantage.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Yuki Shirakawa, Takashi Yamakawa
2024 — conf
Exponential Quantum One-Wayness and EFI Pairs.
SCN (1)
Giulio Malavolta, Tomoyuki Morimae, Michael Walter, Takashi Yamakawa
2024 J jnl
Exponential Quantum One-Wayness and EFI Pairs.
CoRR
Giulio Malavolta, Tomoyuki Morimae, Michael Walter, Takashi Yamakawa
2024 J jnl
Finding Collisions in a Quantum World: Quantum Black-Box Separation of Collision-Resistance and One-Wayness.
J. Cryptol.
Akinori Hosoyamada, Takashi Yamakawa
2024 — conf
One-Wayness in Quantum Cryptography.
TQC
Tomoyuki Morimae, Takashi Yamakawa
2024 — conf
Quantum Advantage from One-Way Functions.
CRYPTO (5)
Tomoyuki Morimae, Takashi Yamakawa
2024 — conf
Quantum Complexity for Discrete Logarithms and Related Problems.
CRYPTO (6)
Minki Hhan, Takashi Yamakawa, Aaram Yun
2024 — conf
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions.
CRYPTO (7)
Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2024 — conf
Quantum Unpredictability.
ASIACRYPT (9)
Tomoyuki Morimae, Shogo Yamada, Takashi Yamakawa
2024 J jnl
Quantum Unpredictability.
CoRR
Tomoyuki Morimae, Shogo Yamada, Takashi Yamakawa
2024 J jnl
Quantum Unpredictability.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Shogo Yamada, Takashi Yamakawa
2024 — conf
Revocable Quantum Digital Signatures.
TQC
Tomoyuki Morimae, Alexander Poremba, Takashi Yamakawa
2024 — conf
Robust Combiners and Universal Constructions for Quantum Cryptography.
TCC (2)
Taiga Hiroka, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2024 — conf
Unconditionally Secure Commitments with Quantum Auxiliary Inputs.
CRYPTO (7)
Tomoyuki Morimae, Barak Nehoran, Takashi Yamakawa
2024 J jnl
Untelegraphable Encryption and its Applications.
CoRR
Jeffrey Champion, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2024 J jnl
Verifiable Quantum Advantage without Structure.
J. ACM
Takashi Yamakawa, Mark Zhandry
2023 A* conf
A New Approach to Post-Quantum Non-Malleability.
FOCS
Xiao Liang, Omkant Pandey, Takashi Yamakawa
2023 J jnl
A Note on Output Length of One-Way State Generators.
CoRR
Minki Hhan, Tomoyuki Morimae, Takashi Yamakawa
2023 J jnl
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More.
CoRR
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
2023 J jnl
Certified Everlasting Secure Collusion-Resistant Functional Encryption, and More.
IACR Cryptol. ePrint Arch.
Taiga Hiroka, Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Tapas Pal, Takashi Yamakawa
2023 J jnl
Classical vs Quantum Advice under Classically-Accessible Oracle.
CoRR
Xingjian Li, Qipeng Liu, Angelos Pelecanos, Takashi Yamakawa
2023 — conf
From the Hardness of Detecting Superpositions to Cryptography: Quantum Public Key Encryption and Commitments.
EUROCRYPT (1)
Minki Hhan, Tomoyuki Morimae, Takashi Yamakawa
2023 J jnl
NIZK from SNARGs.
J. Cryptol.
Fuyuki Kitagawa, Takahiro Matsuda, Takashi Yamakawa
2023 A* conf
Obfuscation of Pseudo-Deterministic Quantum Circuits.
STOC
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Obfuscation of Pseudo-Deterministic Quantum Circuits.
CoRR
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Obfuscation of Pseudo-Deterministic Quantum Circuits.
IACR Cryptol. ePrint Arch.
James Bartusek, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 A conf
Proofs of Quantumness from Trapdoor Permutations.
ITCS
Tomoyuki Morimae, Takashi Yamakawa
2023 — conf
Public Key Encryption with Secure Key Leasing.
EUROCRYPT (1)
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2023 J jnl
Public Key Encryption with Secure Key Leasing.
CoRR
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2023 J jnl
Public Key Encryption with Secure Key Leasing.
IACR Cryptol. ePrint Arch.
Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2023 — conf
Publicly Verifiable Deletion from Minimal Assumptions.
TCC (4)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Publicly Verifiable Deletion from Minimal Assumptions.
CoRR
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Publicly Verifiable Deletion from Minimal Assumptions.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Quantum Advantage from One-Way Functions.
CoRR
Tomoyuki Morimae, Takashi Yamakawa
2023 J jnl
Quantum Advantage from One-Way Functions.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Takashi Yamakawa
2023 J jnl
Quantum Complexity for Discrete Logarithms and Related Problems.
CoRR
Minki Hhan, Takashi Yamakawa, Aaram Yun
2023 J jnl
Quantum Complexity for Discrete Logarithms and Related Problems.
IACR Cryptol. ePrint Arch.
Minki Hhan, Takashi Yamakawa, Aaram Yun
2023 J jnl
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions.
CoRR
Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Quantum Public-Key Encryption with Tamper-Resilient Public Keys from One-Way Functions.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Revocable Quantum Digital Signatures.
CoRR
Tomoyuki Morimae, Alexander Poremba, Takashi Yamakawa
2023 J jnl
Revocable Quantum Digital Signatures.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Alexander Poremba, Takashi Yamakawa
2023 J jnl
Robust Combiners and Universal Constructions for Quantum Cryptography.
IACR Cryptol. ePrint Arch.
Taiga Hiroka, Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2023 J jnl
Unconditionally Secure Commitments with Quantum Auxiliary Inputs.
CoRR
Tomoyuki Morimae, Barak Nehoran, Takashi Yamakawa
2023 J jnl
Unconditionally Secure Commitments with Quantum Auxiliary Inputs.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Barak Nehoran, Takashi Yamakawa
2022 J jnl
A New Approach to Post-Quantum Non-Malleability.
CoRR
Xiao Liang, Omkant Pandey, Takashi Yamakawa
2022 J jnl
A New Approach to Post-Quantum Non-Malleability.
IACR Cryptol. ePrint Arch.
Xiao Liang, Omkant Pandey, Takashi Yamakawa
2022 — conf
Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions.
TCC (1)
Shweta Agrawal, Fuyuki Kitagawa, Anuja Modi, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2022 J jnl
Bounded Functional Encryption for Turing Machines: Adaptive Security from General Assumptions.
IACR Cryptol. ePrint Arch.
Shweta Agrawal, Fuyuki Kitagawa, Anuja Modi, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2022 J jnl
Certified Everlasting Functional Encryption.
CoRR
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2022 J jnl
Certified Everlasting Functional Encryption.
IACR Cryptol. ePrint Arch.
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2022 — conf
Certified Everlasting Zero-Knowledge Proof for QMA.
CRYPTO (1)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2022 — conf
Classically Verifiable NIZK for QMA with Preprocessing.
ASIACRYPT (4)
Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
Classically Verifiable NIZK for QMA with Preprocessing.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
From the Hardness of Detecting Superpositions to Cryptography: Quantum Public Key Encryption and Commitments.
CoRR
Minki Hhan, Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
From the Hardness of Detecting Superpositions to Cryptography: Quantum Public Key Encryption and Commitments.
IACR Cryptol. ePrint Arch.
Minki Hhan, Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
One-Wayness in Quantum Cryptography.
CoRR
Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
One-Wayness in Quantum Cryptography.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Takashi Yamakawa
2022 — conf
Post-quantum Simulatable Extraction with Minimal Assumptions: Black-Box and Constant-Round.
CRYPTO (3)
Nai-Hui Chia, Kai-Min Chung, Xiao Liang, Takashi Yamakawa
2022 J jnl
Proofs of Quantumness from Trapdoor Permutations.
CoRR
Tomoyuki Morimae, Takashi Yamakawa
2022 J jnl
Proofs of Quantumness from Trapdoor Permutations.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Takashi Yamakawa
2022 — conf
Quantum Commitments and Signatures Without One-Way Functions.
CRYPTO (1)
Tomoyuki Morimae, Takashi Yamakawa
2022 A* conf
Verifiable Quantum Advantage without Structure.
FOCS
Takashi Yamakawa, Mark Zhandry
2022 J jnl
Verifiable Quantum Advantage without Structure.
CoRR
Takashi Yamakawa, Mark Zhandry
2022 J jnl
Verifiable Quantum Advantage without Structure.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Mark Zhandry
2021 — conf
A Black-Box Approach to Post-Quantum Zero-Knowledge in Constant Rounds.
CRYPTO (1)
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2021 J jnl
Certified Everlasting Zero-Knowledge Proof for QMA.
CoRR
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Certified Everlasting Zero-Knowledge Proof for QMA.
IACR Cryptol. ePrint Arch.
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2021 — conf
Classical vs Quantum Random Oracles.
EUROCRYPT (2)
Takashi Yamakawa, Mark Zhandry
2021 J jnl
Classically Verifiable (Dual-Mode) NIZK for QMA with Preprocessing.
CoRR
Tomoyuki Morimae, Takashi Yamakawa
2021 J jnl
Compact Designated Verifier NIZKs from the CDH Assumption Without Pairings.
J. Cryptol.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2021 A* conf
On the Impossibility of Post-Quantum Black-Box Zero-Knowledge in Constant Round.
FOCS
Nai-Hui Chia, Kai-Min Chung, Qipeng Liu, Takashi Yamakawa
2021 J jnl
On the Impossibility of Post-Quantum Black-Box Zero-Knowledge in Constant Rounds.
CoRR
Nai-Hui Chia, Kai-Min Chung, Qipeng Liu, Takashi Yamakawa
2021 J jnl
On the Impossibility of Post-Quantum Black-Box Zero-Knowledge in Constant Rounds.
IACR Cryptol. ePrint Arch.
Nai-Hui Chia, Kai-Min Chung, Qipeng Liu, Takashi Yamakawa
2021 J jnl
Post-Quantum Simulatable Extraction with Minimal Assumptions: Black-Box and Constant-Round.
CoRR
Nai-Hui Chia, Kai-Min Chung, Xiao Liang, Takashi Yamakawa
2021 J jnl
Post-Quantum Simulatable Extraction with Minimal Assumptions: Black-Box and Constant-Round.
IACR Cryptol. ePrint Arch.
Nai-Hui Chia, Kai-Min Chung, Xiao Liang, Takashi Yamakawa
2021 — conf
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication.
ASIACRYPT (1)
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication.
CoRR
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication.
IACR Cryptol. ePrint Arch.
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Quantum Encryption with Certified Deletion: Public Key and Attribute-Based.
IACR Cryptol. ePrint Arch.
Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Quantum commitments and signatures without one-way functions.
CoRR
Tomoyuki Morimae, Takashi Yamakawa
2021 J jnl
Quantum commitments and signatures without one-way functions.
IACR Cryptol. ePrint Arch.
Tomoyuki Morimae, Takashi Yamakawa
2021 — conf
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions.
EUROCRYPT (1)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2021 J jnl
Round-Optimal Blind Signatures in the Plain Model from Classical and Quantum Standard Assumptions.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2021 — conf
Secure Software Leasing from Standard Assumptions.
TCC (1)
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2021 J jnl
Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model.
J. Cryptol.
Shuichi Katsumata, Shota Yamada, Takashi Yamakawa
2020 J jnl
A Black-Box Approach to Post-Quantum Zero-Knowledge in Constant Round.
CoRR
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2020 J jnl
A Black-Box Approach to Post-Quantum Zero-Knowledge in Constant Rounds.
IACR Cryptol. ePrint Arch.
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2020 J jnl
A Note on Separating Classical and Quantum Random Oracles.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Mark Zhandry
2020 — conf
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model.
CRYPTO (1)
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 J jnl
Adaptively Secure Constrained Pseudorandom Functions in the Standard Model.
IACR Cryptol. ePrint Arch.
Alex Davidson, Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 — conf
Adaptively Secure Inner Product Encryption from LWE.
ASIACRYPT (3)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 J jnl
Adaptively Secure Inner Product Encryption from LWE.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 — conf
Classical Verification of Quantum Computations with Efficient Verifier.
TCC (3)
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2020 J jnl
Classical Verification of Quantum Computations with Efficient Verifier.
IACR Cryptol. ePrint Arch.
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2020 J jnl
Classical vs Quantum Random Oracles.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Mark Zhandry
2020 — conf
Compact NIZKs from Standard Assumptions on Bilinear Maps.
EUROCRYPT (3)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 J jnl
Compact NIZKs from Standard Assumptions on Bilinear Maps.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2020 — conf
Finding Collisions in a Quantum World: Quantum Black-Box Separation of Collision-Resistance and One-Wayness.
ASIACRYPT (1)
Akinori Hosoyamada, Takashi Yamakawa
2020 J jnl
Generic hardness of inversion on ring and its relation to self-bilinear map.
Theor. Comput. Sci.
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2020 — conf
NIZK from SNARG.
TCC (1)
Fuyuki Kitagawa, Takahiro Matsuda, Takashi Yamakawa
2020 J jnl
NIZK from SNARG.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Takahiro Matsuda, Takashi Yamakawa
2020 J jnl
Secure Software Leasing from Standard Assumptions.
CoRR
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2020 J jnl
Secure Software Leasing from Standard Assumptions.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
2019 C conf
(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model.
PQCrypto
Keita Xagawa, Takashi Yamakawa
2019 — conf
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously.
CRYPTO (3)
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka, Takashi Yamakawa
2019 — conf
Adaptively Single-Key Secure Constrained PRFs for \mathrm NC^1.
Public Key Cryptography (2)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019 J jnl
Classical Verification of Quantum Computations with Efficient Verifier.
CoRR
Nai-Hui Chia, Kai-Min Chung, Takashi Yamakawa
2019 — conf
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions.
EUROCRYPT (2)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019 J jnl
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019 — conf
Exploring Constructions of Compact NIZKs from Various Assumptions.
CRYPTO (3)
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019 J jnl
Exploring Constructions of Compact NIZKs from Various Assumptions.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2019 — conf
Leakage-Resilient Identity-Based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio.
Public Key Cryptography (1)
Ryo Nishimaki, Takashi Yamakawa
2019 J jnl
Leakage-resilient Identity-based Encryption in Bounded Retrieval Model with Nearly Optimal Leakage-Ratio.
IACR Cryptol. ePrint Arch.
Ryo Nishimaki, Takashi Yamakawa
2019 — conf
Quantum Random Oracle Model with Auxiliary Input.
ASIACRYPT (1)
Minki Hhan, Keita Xagawa, Takashi Yamakawa
2019 J jnl
Quantum Random Oracle Model with Auxiliary Input.
IACR Cryptol. ePrint Arch.
Minki Hhan, Keita Xagawa, Takashi Yamakawa
2018 J jnl
(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model.
IACR Cryptol. ePrint Arch.
Keita Xagawa, Takashi Yamakawa
2018 J jnl
Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously.
IACR Cryptol. ePrint Arch.
Fuyuki Kitagawa, Ryo Nishimaki, Keisuke Tanaka, Takashi Yamakawa
2018 J jnl
Adaptively Single-Key Secure Constrained PRFs for NC1.
IACR Cryptol. ePrint Arch.
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2018 J jnl
Constrained PRFs for NC1 in Traditional Groups.
IACR Cryptol. ePrint Arch.
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2018 — conf
Constrained PRFs for \mathrmNC^1 in Traditional Groups.
CRYPTO (2)
Nuttapong Attrapadung, Takahiro Matsuda, Ryo Nishimaki, Shota Yamada, Takashi Yamakawa
2018 J jnl
Finding Collisions in a Quantum World: Quantum Black-Box Separation of Collision-Resistance and One-Wayness.
IACR Cryptol. ePrint Arch.
Akinori Hosoyamada, Takashi Yamakawa
2018 J jnl
Generic Hardness of Inversion on Ring and Its Relation to Self-Bilinear Map.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2018 — conf
Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model.
ASIACRYPT (2)
Shuichi Katsumata, Shota Yamada, Takashi Yamakawa
2018 J jnl
Tighter Security Proofs for GPV-IBE in the Quantum Random Oracle Model.
IACR Cryptol. ePrint Arch.
Shuichi Katsumata, Shota Yamada, Takashi Yamakawa
2018 — conf
Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model.
EUROCRYPT (3)
Tsunekazu Saito, Keita Xagawa, Takashi Yamakawa
2018 — conf
Towards Ideal Self-bilinear Map.
AsiaPKC@AsiaCCS
Takashi Yamakawa
2017 J jnl
Partially Wildcarded Ciphertext-Policy Attribute-Based Encryption and Its Performance Evaluation.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Go Ohtake, Kazuto Ogawa, Goichiro Hanaoka, Shota Yamada, Kohei Kasamatsu, Takashi Yamakawa, Hideki Imai
2017 J jnl
Self-Bilinear Map on Unknown Order Groups from Indistinguishability Obfuscation and Its Applications.
Algorithmica
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2017 J jnl
Tightly-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model.
IACR Cryptol. ePrint Arch.
Tsunekazu Saito, Keita Xagawa, Takashi Yamakawa
2016 — conf
Adversary-Dependent Lossy Trapdoor Function from Hardness of Factoring Semi-smooth RSA Subgroup Moduli.
CRYPTO (2)
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2016 J jnl
Adversary-dependent Lossy Trapdoor Function from Hardness of Factoring Semi-smooth RSA Subgroup Moduli.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2016 J jnl
Efficient key encapsulation mechanisms with tight security reductions to standard assumptions in the two security models.
Secur. Commun. Networks
Yoshikazu Hanatani, Goichiro Hanaoka, Takahiro Matsuda, Takashi Yamakawa
2016 — conf
Generalized Hardness Assumption for Self-bilinear Map with Auxiliary Information.
ACISP (2)
Takashi Yamakawa, Goichiro Hanaoka, Noboru Kunihiro
2015 J jnl
Self-bilinear Map on Unknown Order Groups from Indistinguishability Obfuscation and Its Applications.
IACR Cryptol. ePrint Arch.
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2014 C conf
A Short Fail-Stop Signature Scheme from Factoring.
ProvSec
Takashi Yamakawa, Nobuaki Kitajima, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2014 Misc conf
Chosen Ciphertext Security on Hard Membership Decision Groups: The Case of Semi-smooth Subgroups of Quadratic Residues.
SCN
Takashi Yamakawa, Shota Yamada, Koji Nuida, Goichiro Hanaoka, Noboru Kunihiro
2014 — conf
Self-bilinear Map on Unknown Order Groups from Indistinguishability Obfuscation and Its Applications.
CRYPTO (2)
Takashi Yamakawa, Shota Yamada, Goichiro Hanaoka, Noboru Kunihiro
2013 — conf
Efficient variants of the Naor-Yung and Dolev-Dwork-Naor transforms for CCA secure key encapsulation mechanism.
AsiaPKC@AsiaCCS
Takashi Yamakawa, Shota Yamada, Takahiro Matsuda, Goichiro Hanaoka, Noboru Kunihiro
2013 C conf
Partially Wildcarded Attribute-based Encryption and Its Efficient Construction.
SECRYPT
Go Ohtake, Yuki Hironaka, Kenjiro Kai, Yosuke Endo, Goichiro Hanaoka, Hajime Watanabe, Shota Yamada, Kohei Kasamatsu, Takashi Yamakawa, Hideki Imai
2013 C conf
Reducing Public Key Sizes in Bounded CCA-Secure KEMs with Optimal Ciphertext Length.
ISC
Takashi Yamakawa, Shota Yamada, Takahiro Matsuda, Goichiro Hanaoka, Noboru Kunihiro
1998 J jnl
STM Publications in Japan - a market analysis.
Learn. Publ.
Takashi Yamakawa