School personnel information

写真b

Okumura Shinya


Keyword

number theory, algorithmic number theory, cryptography, post-quantum cryptography, high functional cryptosystems

Organization 【 display / non-display

  • 2017.02.01 - 2018.03.31, Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Assistant Professor

  • 2018.04.01 - , Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Assistant Professor

Education 【 display / non-display

Kyushu University Graduate school of mathematics  Completed 2015.03

Research topics 【 display / non-display

  • Algebra-related, Information security-related

 

Academic Papers 【 display / non-display

  • An Improved Security Analysis on an Indeterminate Equation Public Key Cryptosystem by Evaluation Attacks, Akifumi Muroi, Shinya Okumura, Atsuko Miyaji,The 26th Selected Areas in Cryptography 2019 (SAC 2019) , 2019.09, International Conference(Proceedings)

  • An Experimental Analysis on Lattice Attacks against Ring-LWE over Decomposition Fields, Shota Terada, Hideto Nakano, Shinya Okumura and Atsuko Miyaji,The 15th International Symposium on Information Theory and Its Applications (ISITA 2018), 2018.10, International Conference(Proceedings)

  • Cryptanalysis of a public key cryptosystem based on Diophantine equations via weighted LLL reduction, Jintai Ding, Momonari Kudo, Shinya Okumura, Tsuyoshi Takagi, Chengdong Tao, Japan Journal of Industrial and Applied Mathematics, 2018.06, Papers

  • Security analysis of cryptosystems using short generators over ideal lattices, Shinya Okumura, Shingo Sugiyama, Masaya Yasuda, Tsuyoshi Takagi, Japan Journal of Industrial and Applied Mathematics, 2018.05, Papers

  • A Publickey Encryption Scheme Based on Non-linear Indeterminate Equations, 1. Koichiro Akiyama, Yasuhiro Goto, Shinya Okumura, Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, Lecture Notes in Computer Science,Vol. 10719, pp. 215–234, 2017.12, https://link.springer.com/chapter/10.1007/978-3-319-72565-9_11, International Conference(Proceedings)

display all >>

 

Conference management 【 display / non-display

  • International Conference, The 22nd Workshop on Elliptic Curve Cryptography (ECC 2018), Organizing committee(Accounting), 2018.11

  • International Conference, The 15th InternationaConference on Applied Cryptography and Network Security (ACNS2017), Organizing committee (System co-chair), 2017.07