Cryptanalysis of RSA with Multiple Small Secret Exponents. - Atsushi Takayasu; Noboru Kunihiro (ACISP, 2014)

Better Lattice Constructions for Solving Multivariate Linear Equations Modulo Unknown Divisors. - Atsushi Takayasu; Noboru Kunihiro (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Partial Key Exposure Attacks on CRT-RSA: Better Cryptanalysis to Full Size Encryption Exponents. - Atsushi Takayasu; Noboru Kunihiro (ACNS, 2015)

Tighter Security for Efficient Lattice Cryptography via the Rényi Divergence of Optimized Orders. - Katsuyuki Takashima; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2015)

Partial Key Exposure Attacks on RSA with Multiple Exponent Pairs. - Atsushi Takayasu; Noboru Kunihiro (ACISP (2), 2016)

Small secret exponent attacks on RSA with unbalanced prime factors. - Atsushi Takayasu; Noboru Kunihiro (ISITA, 2016)

Partial Key Exposure Attacks on CRT-RSA: General Improvement for the Exposed Least Significant Bits. - Atsushi Takayasu; Noboru Kunihiro (ISC, 2016)

How to Generalize RSA Cryptanalyses. - Atsushi Takayasu; Noboru Kunihiro (IACR Cryptol. ePrint Arch., 2016)

A Tool Kit for Partial Key Exposure Attacks on RSA. - Atsushi Takayasu; Noboru Kunihiro (IACR Cryptol. ePrint Arch., 2016)

Lattice-based Revocable Identity-based Encryption with Bounded Decryption Key Exposure Resistance. - Atsushi Takayasu; Yohei Watanabe 001 (IACR Cryptol. ePrint Arch., 2017)

General Bounds for Small Inverse Problems and Its Applications to Multi-Prime RSA. - Atsushi Takayasu; Noboru Kunihiro (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Estimated Cost for Solving Generalized Learning with Errors Problem via Embedding Techniques. - Weiyao Wang 004; Yuntao Wang 002; Atsushi Takayasu; Tsuyoshi Takagi (IWSEC, 2018)

Tight Reductions for Diffie-Hellman Variants in the Algebraic Group Model. - Taiga Mizuide; Atsushi Takayasu; Tsuyoshi Takagi (IACR Cryptol. ePrint Arch., 2018)

Explicit Relation between Low-Dimensional LLL-Reduced Bases and Shortest Vectors. - Kotaro Matsuda; Atsushi Takayasu; Tsuyoshi Takagi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

Small CRT-Exponent RSA Revisited. - Atsushi Takayasu; Yao Lu 002; Liqiang Peng (J. Cryptol., 2019)

Generalized cryptanalysis of small CRT-exponent RSA. - Liqiang Peng; Atsushi Takayasu (Theor. Comput. Sci., 2019)

Partial key exposure attacks on RSA: Achieving the Boneh-Durfee bound. - Atsushi Takayasu; Noboru Kunihiro (Theor. Comput. Sci., 2019)

Worst case short lattice vector enumeration on block reduced bases of arbitrary blocksizes. - Noboru Kunihiro; Atsushi Takayasu (Discret. Appl. Math., 2020)

L1-Norm Ball for CSIDH: Optimal Strategy for Choosing the Secret Key Space. - Kohei Nakagawa; Hiroshi Onuki; Atsushi Takayasu; Tsuyoshi Takagi (IACR Cryptol. ePrint Arch., 2020)

On the Complexity of the LWR-Solving BKW Algorithm. - Hiroki Okada 001; Atsushi Takayasu; Kazuhide Fukushima; Shinsaku Kiyomoto; Tsuyoshi Takagi (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)

Extended partial key exposure attacks on RSA: Improvement up to full size decryption exponents. - Kaichi Suzuki; Atsushi Takayasu; Noboru Kunihiro (Theor. Comput. Sci., 2020)

Adaptively secure revocable hierarchical IBE from k-linear assumption. - Keita Emura; Atsushi Takayasu; Yohei Watanabe 001 (Des. Codes Cryptogr., 2021)

Efficient identity-based encryption with Hierarchical key-insulation from HIBE. - Keita Emura; Atsushi Takayasu; Yohei Watanabe 001 (Des. Codes Cryptogr., 2021)

Tag-based ABE in prime-order groups via pair encoding. - Atsushi Takayasu (Des. Codes Cryptogr., 2021)

Adaptively secure lattice-based revocable IBE in the QROM: compact parameters, tight security, and anonymity. - Atsushi Takayasu (Des. Codes Cryptogr., 2021)

A Generic Construction of CCA-secure Attribute-based Encryption with Equality Test. - Kyoichi Asano; Keita Emura; Atsushi Takayasu; Yohei Watanabe 001 (IACR Cryptol. ePrint Arch., 2021)

Generic Constructions of Revocable Hierarchical Identity-based Encryption. - Keita Emura; Atsushi Takayasu; Yohei Watanabe 001 (IACR Cryptol. ePrint Arch., 2021)

More Efficient Adaptively Secure Revocable Hierarchical Identity-based Encryption with Compact Ciphertexts: Achieving Shorter Keys and Tighter Reductions. - Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2021)

A Compact Digital Signature Scheme Based on the Module-LWR Problem. - Hiroki Okada 001; Atsushi Takayasu; Kazuhide Fukushima; Shinsaku Kiyomoto; Tsuyoshi Takagi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Revocable identity-based encryption with bounded decryption key exposure resistance: Lattice-based construction and more. - Atsushi Takayasu; Yohei Watanabe 001 (Theor. Comput. Sci., 2021)

Keyed-Fully Homomorphic Encryption without Indistinguishability Obfuscation. - Shingo Sato; Keita Emura; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2022)

Erratum: A Compact Digital Signature Scheme Based on the Module-LWR Problem [IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Vol. E104.A (2021), No. 9 pp.1219-1234]. - Hiroki Okada 001; Atsushi Takayasu; Kazuhide Fukushima; Shinsaku Kiyomoto; Tsuyoshi Takagi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Memory-Efficient Quantum Information Set Decoding Algorithm. - Naoto Kimura; Atsushi Takayasu; Tsuyoshi Takagi (ACISP, 2023)

A Lattice Attack on CRYSTALS-Kyber with Correlation Power Analysis. - Yen-Ting Kuo; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2023)

Concrete Quantum Cryptanalysis of Binary Elliptic Curves via Addition Chain. - Ren Taguchi; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2023)

L1-norm ball for CSIDH: Optimal strategy for choosing the secret key space. - Kohei Nakagawa; Hiroshi Onuki; Atsushi Takayasu; Tsuyoshi Takagi (Discret. Appl. Math., 2023)

A Generic Construction of CCA-Secure Identity-Based Encryption with Equality Test against Insider Attacks. - Keita Emura; Atsushi Takayasu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Attribute-based Keyed (Fully) Homomorphic Encryption. - Keita Emura; Shingo Sato; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2024)

On the Untapped Potential of the Quantum FLT-based Inversion. - Ren Taguchi; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2024)

More Efficient Adaptively Secure Lattice-Based IBE with Equality Test in the Standard Model. - Kyoichi Asano; Keita Emura; Atsushi Takayasu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

Tight Adaptive Simulation Security for Identity-based Inner-Product FE in the (Quantum) Random Oracle Model. - Tenma Edamura; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2025)

Efficient Revocable Identity-Based Encryption from Middle-Product LWE. - Takumi Nishimura; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2025)

Partial Key Exposure Attacks on UOV and Its Variants. - Yuki Seto; Hiroki Furue; Atsushi Takayasu (IACR Cryptol. ePrint Arch., 2025)