2021/08/28 更新

写真a

コデラ ユウタ
小寺 雄太
KODERA Yuuta
所属
自然科学学域 助教(特任)
職名
助教(特任)
外部リンク

研究分野

  • 情報通信 / 情報セキュリティ

学歴

  • 岡山大学   大学院自然科学研究科博士後期課程  

    2018年4月 - 2020年3月

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    国名: 日本国

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  • 岡山大学   大学院自然科学研究科博士前期課程  

    2017年4月 - 2018年3月

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    国名: 日本国

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  • 岡山大学   工学部  

    2013年4月 - 2017年3月

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    国名: 日本国

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経歴

  • 日本学術振興会特別研究員

    2019年4月 - 2020年3月

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    国名:日本国

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論文

  • Evaluating Side-Channel Resistance Using Low Order Rational Points Against Curve25519 and an Associated Quadratic Twist 査読

    Keiji Yoshimoto, Yoshinori Uetake, Yuta Kodera, Takuya Kusaka, Yasuyuki Nogami

    International Journal of Networking and Computing   10 ( 2 )   144 - 158   2020年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:IJNC Editorial Committee  

    DOI: 10.15803/ijnc.10.2_144

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  • Algebraic Group Structure of the Random Number Generator: Theoretical Analysis of NTU Sequence(s) 査読

    Yuta Kodera, Md. Arshad Ali, Takeru Miyazaki, Takuya Kusaka, Yasuyuki Nogami, Satoshi Uehara, Robert H. Morelos-Zaragoza

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E102.A ( 12 )   1659 - 1667   2019年12月

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    担当区分:筆頭著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Institute of Electronics, Information and Communications Engineers (IEICE)  

    DOI: 10.1587/transfun.e102.a.1659

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  • A Construction of a Keyword Search to Allow Partial Matching with a Block Cipher 査読

    Yuta Kodera, Minoru Kuribayashi, Takuya Kusaka, Yasuyuki Nogami

    Information Security Applications   241 - 252   2019年8月

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    担当区分:筆頭著者   掲載種別:論文集(書籍)内論文   出版者・発行元:Springer International Publishing  

    DOI: 10.1007/978-3-030-17982-3_19

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  • Multi-Value Sequence Generated over Sub Extension Field and Its Properties 査読

    Md. Arshad Ali, Yuta Kodera, Takuya Kusaka, Satoshi Uehara, Yasuyuki Nogami, Robert H. Morelos-Zaragoza

    Journal of Information Security   10 ( 03 )   130 - 154   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Research Publishing, Inc.  

    DOI: 10.4236/jis.2019.103008

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  • Distribution of Bit Patterns in Binary Sequence Generated Over Sub Extension Field 査読

    Md. Arshad Ali, Yuta Kodera, Takuya Kusaka, Yasuyuki Nogami, Satoshi Uehara, Robert H. Morelos-Zaragoza

    Advances in Science, Technology and Engineering Systems Journal   4 ( 2 )   370 - 379   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:ASTES Journal  

    DOI: 10.25046/aj040246

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  • Well Balanced Multi-value Sequence and its Properties Over Odd Characteristic Field 査読

    Md. Arshad Ali, Yuta Kodera, Md. Fazle Rabbi, Takuya Kusaka, Yasuyuki Nogami, Satoshi Uehara, Robert H. Morelos-Zaragoza

    Advances in Science, Technology and Engineering Systems Journal   4 ( 4 )   188 - 196   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:ASTES Journal  

    DOI: 10.25046/aj040423

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  • Advanced Searchable Encryption: An Adaptively Secure Keyword Search for Matrix-type Storages 査読

    Yuta Kodera, Minoru Kuribayashi, Takuya Kusaka, Yasuyuki Nogami

    International Journal of Networking and Computing   9 ( 2 )   171 - 187   2019年

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    担当区分:筆頭著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:IJNC Editorial Committee  

    DOI: 10.15803/ijnc.9.2_171

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  • Distribution of Digit Patterns in Multi-Value Sequence over the Odd Characteristic Field 査読

    Yuta Kodera, Takeru Miyazaki, Md. Al-Amin Khandaker, Md. Arshad Ali, Takuya Kusaka, Yasuyuki Nogami, Satoshi Uehara

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E101.A ( 9 )   1525 - 1536   2018年9月

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    担当区分:筆頭著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Institute of Electronics, Information and Communications Engineers (IEICE)  

    DOI: 10.1587/transfun.e101.a.1525

    Web of Science

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  • Relation between the Irreducible Polynomials that Generates the Same Binary Sequence Over Odd Characteristic Field 査読

    Md. Arshad Ali, Yuta Kodera, Taehwan Park, Takuya Kusaka, Yasuyuki Nogmi, Howon Kim

    Journal of information and communication convergence engineering   16 ( 3 )   166 - 172   2018年6月

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    掲載種別:研究論文(学術雑誌)  

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  • An ECC Implementation with a Twisted Montgomery Curve over Fq32 on an 8-Bit Microcontroller 査読

    Yuta Hashimoto, Md Al Amin Khandaker, Yuta Kodera, Taehwan Park, Takuya Kusaka, Howon Kim, Yasuyuki Nogami

    Proceedings - 2017 5th International Symposium on Computing and Networking, CANDAR 2017   2018-January   445 - 450   2018年4月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © 2017 IEEE. The security of Internet of Things (IoT) devices is one of the most important problems. The processing ability of IoT devices is limited, therefore a more light-weight and secure cryptography is necessary. This paper shows the implementation of 256-bit Elliptic Curve Cryptography (ECC) on an 8-bit microcontroller by applying towering for extension field of degree 32. The authors use a twisted Montgomery curve with a Montgomery ladder which enables fast calculations without inverse elements. In addition to that, this implementation is considered resistant to the Side Channel Attack (SCA) since it applies the Montgomery ladder for the scalar multiplication (SCM). This ECC implementation on Arduino UNO, an 8-bit microcontroller board, takes 3 seconds for an SCM which can be made faster by careful assembly implementation.

    DOI: 10.1109/CANDAR.2017.90

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  • An Efficient Implementation of Trace Calculation over Finite Field for a Pseudorandom Sequence 査読

    Yuta Kodera, Takuya Kusaka, Takeru Miyazaki, Md Al Amin Khandaker, Yasuyuki Nogami, Satoshi Uehara

    Proceedings - 2017 5th International Symposium on Computing and Networking, CANDAR 2017   2018-January   451 - 455   2018年4月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © 2017 IEEE. Trace function is a well known index of finite field theory and practically, it is used for some security applications. However, present trace calculation with binary method is far from the practice on an IoT device. This paper considers an efficient trace calculation without vector multiplication by focusing on the matrix representation and the linearity of trace function. By using pre-computation, a trace calculation is executed by m times multiplication and the memory consumption is 4m bytes. This paper especially uses a pseudorandom generator called NTU sequence to show the efficiency because it has paid much attention as a random generator for security applications. When considering 128-bit length of periodic sequence with NTU sequence for security applications, parameters will be p = 7 and m = 50. From the experimental results, a trace calculation with them will be executed within 5[μs], and the memory consumption is 200 bytes which is 0:625% of the storage in Arduino Uno. Therefore, this work contributes to implementing an efficient trace calculation on an IoT device with low memory consumption.

    DOI: 10.1109/CANDAR.2017.86

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  • Uniform Binary Sequence Generated over Odd Characteristic Field 査読

    8 ( 1 )   5 - 9   2018年3月

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    担当区分:筆頭著者   掲載種別:研究論文(学術雑誌)  

    DOI: 10.18178/ijiee.2018.8.1.685

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  • An Implementation of ECC with Twisted Montgomery Curve over 32nd Degree Tower Field on Arduino Uno. 査読

    Yuta Hashimoto, Md. Al-Amin Khandaker, Yuta Kodera, Taehwan Park, Takuya Kusaka, Howon Kim, Yasuyuki Nogami

    IJNC   8 ( 2 )   341 - 350   2018年

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    掲載種別:研究論文(学術雑誌)  

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  • Distribution of bit patterns on multi-value sequence over odd characteristics field 査読

    Yuta Kodera, Takeru Miyazaki, Md Al Amin Khandaker, Ali Md Arshad, Yasuyuki Nogami, Satoshi Uehara

    2017 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2017   137 - 138   2017年7月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © 2017 IEEE. The Internet of Things (IoT) provides much convenient life for us, at the same time it has brought threats for our privacy. In this context, secure and efficient cryptosystem is required to which pseudorandom sequence plays an important role. Especially, the distribution of bit patterns in the pseudorandom sequence is one of important security aspects. This paper especially focuses on the bit patterns and the distribution in an NTU sequence. As a result of a lot of observation, an important assumption about the distribution of bit patterns in an NTU sequence is introduced. It will help to obtain the balanced NTU sequence in order to enhance the security of cryptosystem on IoT communications.

    DOI: 10.1109/ICCE-China.2017.7991033

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  • An ECC Implementation with a Twisted Montgomery Curve over Fq32 on an 8-Bit Microcontroller. 査読

    Yuta Hashimoto, Md. Al-Amin Khandaker, Yuta Kodera, Taehwan Park, Takuya Kusaka, Howon Kim, Yasuyuki Nogami

    445 - 450   2017年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1109/CANDAR.2017.90

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  • An Efficient Implementation of Trace Calculation over Finite Field for a Pseudorandom Sequence. 査読

    Yuta Kodera, Takuya Kusaka, Takeru Miyazaki, Md. Al-Amin Khandaker, Yasuyuki Nogami, Satoshi Uehara

    451 - 455   2017年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1109/CANDAR.2017.86

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  • Efficient Optimal Ate Pairing at 128-Bit Security Level. 査読

    Md. Al-Amin Khandaker, Yuki Nanjo, Loubna Ghammam, Sylvain Duquesne, Yasuyuki Nogami, Yuta Kodera

    186 - 205   2017年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1007/978-3-319-71667-1_10

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  • Efficient Optimal Ate Pairing at 128-bit Security Level. 査読

    Md. Al-Amin Khandaker, Yuki Nanjo, Loubna Ghammam, Sylvain Duquesne, Yasuyuki Nogami, Yuta Kodera

    IACR Cryptology ePrint Archive   2017   1174 - 1174   2017年

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    掲載種別:研究論文(学術雑誌)  

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▼全件表示

受賞

  • Best Paper Award

    2017年6月   2017 IEEE ICCE-TW  

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担当授業科目

  • セキュリティ実装演習A (2021年度) 夏季集中  - その他

  • 分散データ管理演習 (2021年度) 夏季集中  - その他

  • 工学基礎実験実習 (2021年度) 1・2学期  - その他

  • 工学基礎実験実習 (2021年度) 1・2学期  - 火5,火6,火7,火8

  • 電気通信系実験C (2021年度) 3・4学期  - 火3,火4,火5,火6,火7

  • クロスサイトスクリプティング対策演習 (2020年度) 夏季集中  - その他

  • セキュリティ総論E (2020年度) 3・4学期  - 水7,水8

  • 安全性評価のための衝突型暗号攻撃演習 (2020年度) 夏季集中  - その他

  • 工学基礎実験実習 (2020年度) 1・2学期  - 火4,火5,火6,火7

  • 工学基礎実験実習 (2020年度) 1・2学期  - 火4,火5,火6,火7

  • 暗号ハードウェアセキュリティ演習 (2020年度) 第4学期  - その他

  • 通信ネットワーク工学実験Ⅱ (2020年度) 3・4学期  - 火3,火4,火5,火6,火7

  • 電気通信系実験C (2020年度) 3・4学期  - 火3,火4,火5,火6,火7

  • 電気通信系実験Ⅲ (2020年度) 3・4学期  - 火3,火4,火5,火6,火7

▼全件表示