Shinya Okumura

Publication Activity (10 Years)

Years Active: 2015-2023
Publications (10 Years): 9

Top Topics

Digital Signature

Public Key Cryptosystem

Boolean Algebra

Top Venues

IACR Cryptol. ePrint Arch.

IEICE Trans. Inf. Syst.

Publications

Tomoka Takahashi, Shinya Okumura, Atsuko Miyaji
On the Weakness of Non-Dual Ring-LWE Mod Prime Ideal q by Trace Map. IEICE Trans. Inf. Syst. 106 (9) (2023)
Satoshi Uesugi, Shinya Okumura, Atsuko Miyaji
Revisiting an Extension of Kannan's Embedding for Ring-LWE. MobiSec (2023)
Tomoka Takahashi, Shinya Okumura, Atsuko Miyaji
On the Weakness of Ring-LWE mod Prime Ideal $\mathfrak {q}$ by Trace Map. SAC (2022)
Akifumi Muroi, Shinya Okumura, Atsuko Miyaji
An Improved Security Analysis on an Indeterminate Equation Public Key Cryptosystem by Evaluation Attacks. SAC (2019)
Shota Terada, Hideto Nakano, Shinya Okumura, Atsuko Miyaji
An Experimental Analysis on Lattice Attacks against Ring-LWE over Decomposition Fields. ISITA (2018)
Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, Hideo Shimizu, Yasuhiko Ikematsu
A Public-key Encryption Scheme Based on Non-linear Indeterminate Equations (Giophantus). IACR Cryptol. ePrint Arch. 2017 (2017)
Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka
A Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations. SAC (2017)
Jintai Ding, Momonari Kudo, Shinya Okumura, Tsuyoshi Takagi, Chengdong Tao
Cryptanalysis of a Public Key Cryptosystem Based on Diophantine Equations via Weighted LLL Reduction. IWSEC (2016)
Shinya Okumura, Koichiro Akiyama, Tsuyoshi Takagi
An Estimate of the Complexity of the Section Finding Problem on Algebraic Surfaces. CANDAR (2016)
Shinya Okumura, Shingo Sugiyama, Masaya Yasuda, Tsuyoshi Takagi
Security Analysis of Cryptosystems Using Short Generators over Ideal Lattices. IACR Cryptol. ePrint Arch. 2015 (2015)
Jintai Ding, Momonari Kudo, Shinya Okumura, Tsuyoshi Takagi, Chengdong Tao
Cryptanalysis of a public key cryptosystem based on Diophantine equations via weighted LLL reduction. IACR Cryptol. ePrint Arch. 2015 (2015)