Shinya Okumura

A public key cryptosystem based on diophantine equations of degree increasing type

Shinya Okumura, Shinya Okumura, 2015 .

Public key cryptosystems based on diophantine equations

Shinya Okumura, 奥村 伸也, シンヤ オクムラ, 2015 .

Cryptography Core Technology

Chen-Mou Cheng, Atsuko Miyaji, Shinya Okumura, 2020, Security Infrastructure Technology for Integrated Utilization of Big Data.

Cryptanalysis of a public key cryptosystem based on Diophantine equations via weighted LLL reduction

Tsuyoshi Takagi, Jintai Ding, Chengdong Tao, 2018, Japan Journal of Industrial and Applied Mathematics.

Security analysis of cryptosystems using short generators over ideal lattices

Tsuyoshi Takagi, Masaya Yasuda, Shingo Sugiyama, 2018, IACR Cryptol. ePrint Arch..

An Estimate of the Complexity of the Section Finding Problem on Algebraic Surfaces

Tsuyoshi Takagi, Shinya Okumura, Koichiro Akiyama, 2016, 2016 Fourth International Symposium on Computing and Networking (CANDAR).

An Experimental Analysis on Lattice Attacks against Ring-LWE over Decomposition Fields

Atsuko Miyaji, Shinya Okumura, Shota Terada, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

A Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations

Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, 2017, SAC.

Cryptanalysis of a Public Key Cryptosystem Based on Diophantine Equations via Weighted LLL Reduction

Jintai Ding, Chengdong Tao, Shinya Okumura, 2016, IWSEC.