Atsushi Takayasu

According to our database, Atsushi Takayasu authored at least 41 papers between 2014 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

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

On the Untapped Potential of the Quantum FLT-based Inversion.

Ren Taguchi, Atsushi Takayasu

IACR Cryptol. ePrint Arch., 2024

Attribute-based Keyed (Fully) Homomorphic Encryption.

Keita Emura, Shingo Sato, Atsushi Takayasu

IACR Cryptol. ePrint Arch., 2024

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., March, 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., March, 2023

Concrete Quantum Cryptanalysis of Binary Elliptic Curves via Addition Chain.

Ren Taguchi, Atsushi Takayasu

IACR Cryptol. ePrint Arch., 2023

A Lattice Attack on CRYSTALS-Kyber with Correlation Power Analysis.

Yen-Ting Kuo, Atsushi Takayasu

IACR Cryptol. ePrint Arch., 2023

Memory-Efficient Quantum Information Set Decoding Algorithm.

Naoto Kimura, Atsushi Takayasu, Tsuyoshi Takagi

Proceedings of the Information Security and Privacy - 28th Australasian Conference, 2023

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, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022

Keyed-Fully Homomorphic Encryption without Indistinguishability Obfuscation.

Shingo Sato, Keita Emura, Atsushi Takayasu

IACR Cryptol. ePrint Arch., 2022

2021

Revocable identity-based encryption with bounded decryption key exposure resistance: Lattice-based construction and more.

Atsushi Takayasu, Yohei Watanabe

Theor. Comput. Sci., 2021

A Compact Digital Signature Scheme Based on the Module-LWR Problem.

Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 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

Generic Constructions of Revocable Hierarchical Identity-based Encryption.

Keita Emura, Atsushi Takayasu, Yohei Watanabe

IACR Cryptol. ePrint Arch., 2021

A Generic Construction of CCA-secure Attribute-based Encryption with Equality Test.

Kyoichi Asano, Keita Emura, Atsushi Takayasu, Yohei Watanabe

IACR Cryptol. ePrint Arch., 2021

Adaptively secure lattice-based revocable IBE in the QROM: compact parameters, tight security, and anonymity.

Atsushi Takayasu

Des. Codes Cryptogr., 2021

Tag-based ABE in prime-order groups via pair encoding.

Atsushi Takayasu

Des. Codes Cryptogr., 2021

Efficient identity-based encryption with Hierarchical key-insulation from HIBE.

Keita Emura, Atsushi Takayasu, Yohei Watanabe

Des. Codes Cryptogr., 2021

Adaptively secure revocable hierarchical IBE from k-linear assumption.

Keita Emura, Atsushi Takayasu, Yohei Watanabe

Des. Codes Cryptogr., 2021

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

Lattice-based revocable (hierarchical) IBE with decryption key exposure resistance.

Shuichi Katsumata, Takahiro Matsuda, Atsushi Takayasu

Theor. Comput. Sci., 2020

On the Complexity of the LWR-Solving BKW Algorithm.

Hiroki Okada, Atsushi Takayasu, Kazuhide Fukushima, Shinsaku Kiyomoto, Tsuyoshi Takagi

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 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

Worst case short lattice vector enumeration on block reduced bases of arbitrary blocksizes.

Noboru Kunihiro, Atsushi Takayasu

Discret. Appl. Math., 2020

2019

Partial key exposure attacks on RSA: Achieving the Boneh-Durfee bound.

Atsushi Takayasu, Noboru Kunihiro

Theor. Comput. Sci., 2019

Generalized cryptanalysis of small CRT-exponent RSA.

Liqiang Peng, Atsushi Takayasu

Theor. Comput. Sci., 2019

Small CRT-Exponent RSA Revisited.

Atsushi Takayasu, Yao Lu, Liqiang Peng

J. Cryptol., 2019

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

2018

Tight Reductions for Diffie-Hellman Variants in the Algebraic Group Model.

Taiga Mizuide, Atsushi Takayasu, Tsuyoshi Takagi

IACR Cryptol. ePrint Arch., 2018

Estimated Cost for Solving Generalized Learning with Errors Problem via Embedding Techniques.

Weiyao Wang, Yuntao Wang, Atsushi Takayasu, Tsuyoshi Takagi

Proceedings of the Advances in Information and Computer Security, 2018

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

Lattice-based Revocable Identity-based Encryption with Bounded Decryption Key Exposure Resistance.

Atsushi Takayasu, Yohei Watanabe

IACR Cryptol. ePrint Arch., 2017

2016

A Tool Kit for Partial Key Exposure Attacks on RSA.

Atsushi Takayasu, Noboru Kunihiro

IACR Cryptol. ePrint Arch., 2016

How to Generalize RSA Cryptanalyses.

Atsushi Takayasu, Noboru Kunihiro

IACR Cryptol. ePrint Arch., 2016

Partial Key Exposure Attacks on CRT-RSA: General Improvement for the Exposed Least Significant Bits.

Atsushi Takayasu, Noboru Kunihiro

Proceedings of the Information Security - 19th International Conference, 2016

Small secret exponent attacks on RSA with unbalanced prime factors.

Atsushi Takayasu, Noboru Kunihiro

Proceedings of the 2016 International Symposium on Information Theory and Its Applications, 2016

Partial Key Exposure Attacks on RSA with Multiple Exponent Pairs.

Atsushi Takayasu, Noboru Kunihiro

Proceedings of the Information Security and Privacy - 21st Australasian Conference, 2016

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 CRT-RSA: Better Cryptanalysis to Full Size Encryption Exponents.

Atsushi Takayasu, Noboru Kunihiro

Proceedings of the Applied Cryptography and Network Security, 2015

2014

Better Lattice Constructions for Solving Multivariate Linear Equations Modulo Unknown Divisors.

Atsushi Takayasu, Noboru Kunihiro

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014

Cryptanalysis of RSA with Multiple Small Secret Exponents.

Atsushi Takayasu, Noboru Kunihiro

Proceedings of the Information Security and Privacy - 19th Australasian Conference, 2014