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Journal Articles
- 2023
[j1]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): 1423-1434 (2023)
Conference and Workshop Papers
- 2023
- [c8]Satoshi Uesugi, Shinya Okumura, Atsuko Miyaji:
Revisiting an Extension of Kannan's Embedding for Ring-LWE. MobiSec 2023: 167-180 - 2022
- [c7]Shinya Okumura, Shusaku Uemura, Momonari Kudo:
Revisiting Lattice-Based Attacks Using Trace Map for Ring-LWE. ISITA 2022: 49-53 - [c6]Tomoka Takahashi, Shinya Okumura, Atsuko Miyaji:
On the Weakness of Ring-LWE mod Prime Ideal $\mathfrak {q}$ by Trace Map. SAC 2022: 33-52 - 2019
- [c5]Akifumi Muroi, Shinya Okumura, Atsuko Miyaji:
An Improved Security Analysis on an Indeterminate Equation Public Key Cryptosystem by Evaluation Attacks. SAC 2019: 421-436 - 2018
- [c4]Shota Terada, Hideto Nakano, Shinya Okumura, Atsuko Miyaji:
An Experimental Analysis on Lattice Attacks against Ring-LWE over Decomposition Fields. ISITA 2018: 306-310 - 2017
- [c3]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: 215-234 - 2016
- [c2]Shinya Okumura, Koichiro Akiyama, Tsuyoshi Takagi:
An Estimate of the Complexity of the Section Finding Problem on Algebraic Surfaces. CANDAR 2016: 28-36 - [c1]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: 305-315
Parts in Books or Collections
- 2020
- [p2]Chen-Mou Cheng, Kenta Kodera, Atsuko Miyaji, Shinya Okumura:
Cryptography Core Technology. Security Infrastructure Technology for Integrated Utilization of Big Data 2020: 5-33 - 2017
- [p1]Shinya Okumura:
On Analysis of Recovering Short Generator Problems via Upper and Lower Bounds of Dirichlet L-functions: Part 2. CREST Crypto-Math Project 2017: 279-295
Informal and Other Publications
- 2017
- [i3]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: 1241 (2017) - 2015
- [i2]Shinya Okumura, Shingo Sugiyama, Masaya Yasuda, Tsuyoshi Takagi:
Security Analysis of Cryptosystems Using Short Generators over Ideal Lattices. IACR Cryptol. ePrint Arch. 2015: 1004 (2015) - [i1]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: 1229 (2015)
Coauthor Index
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