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

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

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)

Constructions for the IND-CCA1 Secure Fully Homomorphic Encryption. - Satoshi Yasuda; Fuyuki Kitagawa; Keisuke Tanaka (CREST Crypto-Math Project, 2017)

Indistinguishability Obfuscation: Simpler Constructions using Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Indistinguishability Obfuscation for All Circuits from Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

From Single-Key to Collusion-Resistant Secret-Key Functional Encryption by Leveraging Succinctness. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Key Dependent Message Security and Receiver Selective Opening Security for Identity-Based Encryption. - Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Formal Treatment of Verifiable Privacy-Preserving Data-Aggregation Protocols. - Satoshi Yasuda; Yoshihiro Koseki; Yusuke Sakai 001; Fuyuki Kitagawa; Yutaka Kawai; Goichiro Hanaoka (ProvSec, 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)

A Framework for Achieving KDM-CCA Secure Public-Key Encryption. - Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

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)

Non-Committing Encryption with Quasi-Optimal Ciphertext-Rate Based on the DDH Problem. - Yusuke Yoshida; Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 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)

Secret Sharing with Statistical Privacy and Computational Relaxed Non-malleability. - Tasuku Narita; Fuyuki Kitagawa; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2020)

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)

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

Non-Committing Encryption with Constant Ciphertext Expansion from Standard Assumptions. - Yusuke Yoshida; Fuyuki Kitagawa; Keita Xagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2020)

Verifiable Privacy-Preserving Data Aggregation Protocols. - Satoshi Yasuda; Yoshihiro Koseki; Yusuke Sakai 001; Fuyuki Kitagawa; Yutaka Kawai; Goichiro Hanaoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

KDM Security for the Fujisaki-Okamoto Transformations in the QROM. - Fuyuki Kitagawa; Ryo Nishimaki (IACR Cryptol. ePrint Arch., 2021)

Equivalence between Non-Malleability against Replayable CCA and Other RCCA-Security Notions. - Junichiro Hayata; Fuyuki Kitagawa; Yusuke Sakai 001; Goichiro Hanaoka; Kanta Matsuura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Simple and Generic Constructions of Succinct Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (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)

Watermarking PRFs against Quantum Adversaries. - Fuyuki Kitagawa; Ryo Nishimaki (IACR Cryptol. ePrint Arch., 2022)

Functional Encryption with Secure Key Leasing. - Fuyuki Kitagawa; Ryo Nishimaki (IACR Cryptol. ePrint Arch., 2022)

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

Obfustopia Built on Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (J. Cryptol., 2022)

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)

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)

One-out-of-Many Unclonable Cryptography: Definitions, Constructions, and More. - Fuyuki Kitagawa; Ryo Nishimaki (IACR Cryptol. ePrint Arch., 2023)

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

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

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

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

Watermarking PRFs and PKE Against Quantum Adversaries. - Fuyuki Kitagawa; Ryo Nishimaki (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)

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

White-Box Watermarking Signatures against Quantum Adversaries and Its Applications. - Fuyuki Kitagawa; Ryo Nishimaki (IACR Cryptol. ePrint Arch., 2025)

PKE and ABE with Collusion-Resistant Secure Key Leasing. - Fuyuki Kitagawa; Ryo Nishimaki; Nikhil Pappu (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)