Okazaki Hiroyuki

Academic Assembly School of Science and Technology Institute of Engineering

Graduate School of Science and Technology 

Associate Professor 

Degree

  • doctorate in engineering, Kyoto Institute of Technology(Japan)

Research Keyword

    Cryptology, Security

Field Of Study

  • Theory of informatics, Formal Verification
  • Information security, Information Security(Cryptology)

Career

  • 2021
    GraduateSchoolof Science and Technology, Shinshu University (Associate Professor)
  • 2007 - 2021
    GraduateSchoolof Science and Technology, Shinshu University (Assistant Professor)
  • 2005 - 2007
    Graduate School of Science and Technology, Shinshu University (Research Associate)

Educational Background

  • 2001 - 2004, Kyoto Institute of Technology, Graduate School of Science and Technology, Division of Information and Production Science
  • 1999 - 2001, Kyoto Institute of Technology, Graduate School of Science and Technology, Division of Electronics and Information Science
  • 1999, Kyoto Institute of Technology, Faculty of Engineering and Design, Department of Electronics and Information Science

Paper

  • Virtual Environment for Analysis and Evaluation of DDoS Attacks
    Ryo Tokuyama, Yuichi Futa, Hikofumi Suzuki, Hiroyuki Okazaki
    Lecture Notes in Networks and Systems, 227(3), 459-468, 2021, Refereed, Not invited電子ジャーナル
  • Formal Verification of Merkle-Damgård Construction in ProVerif
    Mieno Takehiko, Yoshimura Togo, Hiroyuki Okazaki, Yuichi Futa, Kenichi Arai
    Proc of The International Symposium on Information Theory and Its Applications(ISITA2020), 602-606, 2021, Refereed, Not invited電子ジャーナル
  • Real Vector Space and Related Notions
    Kazuhisa Nakasho,Hiroyuki Okazaki,Yasunari Shidama
    Formalized Mathematics, 29(3), 117-127, 2021, Refereed電子ジャーナル
  • Finite Dimensional Real Normed Spaces are Proper Metric Spaces
    Kazuhisa Nakasho, Hiroyuki Okazaki
    Formalized Mathematics, 29(4), 177-186, 2021, Refereed電子ジャーナル
  • The 3-Fold Product Space of Real Normed Spaces and its Properties
    Hiroyuki Okazaki, Kazuhisa Nakasho
    Formalized Mathematics, 29(4), 245-253, 2021, Refereed電子ジャーナル
  • Formalization of Security Requirements and Attack Models for Cryptographic Hash Functions in ProVerif
    Togo Yoshimura, Kenichi Arai, Hiroyuki Okazaki, Yuichi Futa
    The 2019 International Conference on Security and Management (SAM'19), 23-29, 2019, Refereed
  • Maximum Number of Steps Taken by Modular Exponentiation and Euclidean Algorithm
    Hiroyuki Okazaki,Koh-ichi Nagao,Yuichi Futa
    Formalized Mathematics, 27(1), 87-91, 2019, RefereedWebofScienceリポジトリ電子ジャーナル
  • Operations of Points on Elliptic Curve in Affine Coordinates
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 27(3), 315-320, 2019, RefereedWebofScienceリポジトリ電子ジャーナル
  • Suitable Models for Formal Security Verification of Cryptosystems in ProVerif
    Hiroyuki Okazaki, Yuichi Futa, Kenichi Arai
    The International Symposium on Information Theory and Its Applications(ISITA2018), 326-330, 2018, Refereed電子ジャーナル
  • Binary Representation of Natural Numbers
    Hiroyuki Okazaki
    Formalized Mathematics, 26(3), 223-229, 2018, RefereedWebofScienceリポジトリ電子ジャーナル
  • Formalization of Statistical Indistinguishability of Probability Distribution Ensembles in Mizar
    Hiroyuki Okazaki
    The International Symposium on Information Theory and Its Applications, 517-521, 2016, Refereedリポジトリ
  • Torsion Part of ℤ-module
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 23(4), 297-307, 2016, RefereedWebofScience電子ジャーナル
  • Algebra of Polynomially Bounded Sequences and Negligible Functions
    Hiroyuki Okazaki
    Formalized Mathematics, 23(4), 371-378, 2016, RefereedWebofScience電子ジャーナル
  • Conservation Rules of Direct Sum Decomposition of Groups
    Kazuhisa Nakasho, Hiroshi Yamazaki, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 24(1), 81-94, 2016, RefereedWebofScience電子ジャーナル
  • Privacy Preserving Logic Formula Calculation in Cloud
    Hiroshi Yamaguchi, Shigeo Tsujii, Hiroyuki Okazaki, Yasunari Shidama
    2016 IEEE Tenth International Conference on Semantic Computing (ICSC), 329-332, 2016, Refereed電子ジャーナル
  • Definition and Properties of Direct Sum Decomposition of Groups
    Kazuhisa Nakasho, Hiroshi Yamazaki, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 23(1), 15-27, 2015, RefereedWebofScience電子ジャーナル
  • Matrix of Z-module
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 23(1), 29-49, 2015, RefereedWebofScience電子ジャーナル
  • Equivalent Expressions of Direct Sum Decomposition of Groups
    Kazuhisa Nakasho, Hiroyuki Okazaki, Hiroshi Yamazaki, Yasunari Shidama
    Formalized Mathematics, 23(1), 67-73, 2015, RefereedWebofScience電子ジャーナル
  • Polynomially Bounded Sequences and Polynomial Sequences
    Hiroyuki Okazaki, Yuichi Futa
    Formalized Mathematics, 23(3), 205-213, 2015, RefereedWebofScience電子ジャーナル
  • Rank of Submodule, Linear Transformations and Linearly Independent Subsets of Z-module
    Kazuhisa Nakasho, Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 22(3), 189-198, 2014, RefereedWebofScience電子ジャーナル
  • Difference of Function on Vector Space over F
    Kenichi Arai, Ken Wakabayashi, Hiroyuki Okazaki
    Formalized Mathematics, 22(3), 265-270, 2014, RefereedWebofScience電子ジャーナル
  • Torsion Z-module and Torsion-free Z-module
    Yuichi Futa, Hiroyuki Okazaki, Kazuhisa Nakasho, Yasunari Shidama
    Formalized Mathematics, 22(4), 271-283, 2014, RefereedWebofScience電子ジャーナル
  • Formal definition of probability on finite and discrete sample space for proving security of cryptographic systems using Mizar
    Okazaki, H; Futa, Y; Shidama, Y
    Artificial Intelligence Research, 2(4), 37-48, Aug. 2013, Refereedリポジトリ電子ジャーナル
  • Formalization of Definitions and Theorems Related to an Elliptic Curve Over a Finite Prime Field by Using Mizar
    Futa, Y; Okazaki, H; Shidama, Y
    JOURNAL OF AUTOMATED REASONING, 50(2), 161-172, Feb. 2013, RefereedWebofScienceリポジトリ電子ジャーナル
  • Content Development for Distance Education in Advanced University Mathematics Using Mizar
    Takaya Ido, Hiroyuki Okazaki, Hiroshi YAMAZAKI, Pauline Naomi KAWAMOTO, Katsumi WASAKI, Yasunari Shidama
    The 2013 International Conference on e-Learning, e-Business, Enterprise Information Systems, and e-Government(EEE'13), 312-326, 2013, Refereed
  • Formalization Description of Huffman Coding Trees Using the Mizar
    Takaya Ido, Hiroyuki Okazaki, Yasunari Shidama
    2013 International Conference on Foundations of Computer Science (FCS'13), 59-65, 2013, Refereed
  • Formalization of Binary Fields and N-dimensional Binary Vector Spaces Using the Mizar Proof Checker
    Kenichi Arai, Hiroyuki Okazaki, Yasunari Shidama
    2013 International Conference on Foundations of Computer Science (FCS'13), 71-77, 2013, Refereed
  • The C^k Space
    Katuhiko Kanazashi, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 21(1), 25-31, 2013, RefereedWebofScience電子ジャーナル
  • Random Variables and Product of Probability Spaces
    Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 21(1), 33-39, 2013, RefereedWebofScience電子ジャーナル
  • Isomorphisms of Direct Products of Finite Commutative Groups
    Hiroyuki Okazaki, Hiroshi Yamazaki, Yasunari Shidama
    Formalized Mathematics, 21(1), 65-74, 2013, RefereedWebofScience電子ジャーナル
  • N-dimensional Binary Vector Spaces
    Kenichi Arai, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 21(2), 75-81, 2013, RefereedWebofScience電子ジャーナル
  • Constructing Binary Huffman Tree
    Hiroyuki Okazaki, Yuichi Futa, Yasunari Shidama
    Formalized Mathematics, 21(2), 133-143, 2013, RefereedWebofScience電子ジャーナル
  • Gaussian Integers
    Yuichi Futa, Hiroyuki Okazaki, Daich Mizushima, Yasunari Shidama
    Formalized Mathematics, 21(2), 115-125, 2013, RefereedWebofScience電子ジャーナル
  • Formalization of the Advanced Encryption Standard. Part I
    Kenichi Arai, Hiroyuki Okazaki
    Formalized Mathematics, 21(3), 171-184, 2013, RefereedWebofScience電子ジャーナル
  • Double Sequences and Limits
    Noboru Endou, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 21(3), 163-170, 2013, RefereedWebofScience電子ジャーナル
  • Isomorphisms of Direct Products of Cyclic Groups of Prime-power Order
    Hiroshi Yamazaki, Hiroyuki Okazaki, Kazuhisa Nakasho, Yasunari Shidama
    Formalized Mathematics, 21(3), 207-211, 2013, RefereedWebofScience電子ジャーナル
  • Submodule of free Z-module
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 21(4), 273-282, 2013, RefereedWebofScience電子ジャーナル
  • Formalization of Gaussian Integers, Gaussian Rational Numbers, and Their Algebraic Structures with Mizar
    Yuichi Futa, Daichi Mizushima,Hiroyuki Okazaki
    2012 International Symposium on Information Theory and its Applications (ISITA2012), 591-595, 2012, Refereedリポジトリ
  • Formalization Verification of AES Using the Mizar Proof Checker
    Hiroyuki Okazaki, Kenichi Arai, Yasunari Shidama
    2012 International Conference on Foundations of Computer Science (FCS'12), 78-84, 2012, Refereed
  • Formalization Verification of Number Theoretic Algorithms Using the Mizar Proof Checker
    Hiroyuki Okazaki, Yoshiki Aoki, Yasunari Shidama
    2012 International Conference on Foundations of Computer Science (FCS'12), 45-50, 2012, Refereed
  • Signature as Public Key Structured Cryptosystem and its Application
    Kenichi Arai, Hiroyuki Okazaki
    The 11th International Conference on Security and Management(SAM'12), 22-27, 2012, Refereed
  • Operations of Points on Elliptic Curve in Projective Coordinates
    Yuichi Futa, Hiroyuki Okazaki, Daichi Mizushima, Yasunari Shidama
    Formalized Mathematics, 20(1), 87-95, 2012, RefereedWebofScience電子ジャーナル
  • Z-modules
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(1), 47-59, 2012, RefereedWebofScience電子ジャーナル
  • Functional Space C(ω), C0(ω)
    Katuhiko Kanazashi, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(1), 15-22, 2012, RefereedWebofScience電子ジャーナル
  • Formalization of the Data Encryption Standard
    Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(2), 125-146, 2012, RefereedWebofScience電子ジャーナル
  • Higher-Order Partial Differentiation
    Noboru Endou, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(2), 113-124, 2012, RefereedWebofScience電子ジャーナル
  • Extended Euclidean Algorithm and CRT Algorithm
    Hiroyuki Okazaki, Yoshiki Aoki,Yasunari Shidama
    Formalized Mathematics, 20(2), 175-179, 2012, RefereedWebofScience電子ジャーナル
  • Quotient Module of Z-module
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(3), 205-214, 2012, RefereedWebofScience電子ジャーナル
  • Posterior Probability on Finite Set
    Hiroyuki Okazaki
    Formalized Mathematics, 20(4), 257-263, 2012, RefereedWebofScience電子ジャーナル
  • Isomorphisms of Direct Products of Finite Cyclic Groups
    Kenichi Arai, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(4), 343-347, 2012, RefereedWebofScience電子ジャーナル
  • Free Z-module
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(4), 275-280, 2012, RefereedWebofScience電子ジャーナル
  • Banach's Continuous Inverse Theorem and Closed Graph Theorem
    Hideki Sakurai, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 20(4), 271-274, 2012, RefereedWebofScience電子ジャーナル
  • Formalization Verification of DES Using the Mizar Proof Checker
    Hiroyuki Okazaki, Kenichi Arai, Yasunari Shidama
    2011 International Conference on Foundations of Computer Science, 63-68, Jul. 2011, Refereed
  • Normal Subgroup of Product of Groups
    Hiroyuki Okazaki, Kenichi Arai, Yasunari Shidama
    Formalized Mathematics, 19(1), 23-26, 2011, RefereedWebofScience電子ジャーナル
  • More on Continuous Functions on Normed Linear Spaces
    Hiroyuki Okazaki, Noboru Endou and Yasunari Shidama
    Formalized Mathematics, 19(1), 45-49, 2011, RefereedWebofScience電子ジャーナル
  • Cartesian Products of Family of Real Linear Spaces
    Hiroyuki Okazaki, Noboru Endou and Yasunari Shidama
    Formalized Mathematics, 19(1), 51-59, 2011, RefereedWebofScience電子ジャーナル
  • Formalization of Integral Linear Space
    Hiroyuki Okazaki, Noboru Endou and Yasunari Shidama
    Formalized Mathematics, 19(1), 61-64, 2011, RefereedWebofScience電子ジャーナル
  • Differentiable Functions into Real Normed Spaces
    Hiroyuki Okazaki, Noboru Endou, Keiko Narita and Yasunari Shidama
    Formalized Mathematics, 19(2), 69-72, 2011, RefereedWebofScience電子ジャーナル
  • Banach Algebra of Bounded Complex-Valued Functionals
    Katuhiko Kanazashi, Hiroyuki Okazaki and Yasunari Shidama
    Formalized Mathematics, 19(2), 121-126, 2011, RefereedWebofScience電子ジャーナル
  • Set of Points on Elliptic Curve in Projective Coordinates
    Yuichi Futa, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 19(3), 131-138, 2011, RefereedWebofScience電子ジャーナル
  • Formalization of Probability and Random Sampling on a Finite and Discrete Sample Space Using the Mizar Proof Checker
    Kenichi Arai, Nobuaki Kondo, Hiroyuki Okazaki
    2010 International Conference on Foundations of Computer Science, Jul. 2010, Refereed
  • Probability Measure on Discrete Spaces and Algebra of Real Valued Random Variables
    Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 18(4), 213-217, 2010, RefereedWebofScience電子ジャーナル
  • Hopf Extension Theorem of Measure
    Noboru Endou, Hiroyuki Okazaki, Yasunari Shidama
    Formalized Mathematics, 17(2), 157-162, 2009, RefereedWebofScience電子ジャーナル
  • Probability on Finite and Discrete Set and Uniform Distribution
    Hiroyuki Okazaki
    Formalized Mathematics, 17(2), 173-178, 2009, RefereedWebofScience電子ジャーナル
  • Probability on Finite Set and Real-Valued Random Variables
    Hiroyuki Okazaki,Yasunari Shidama
    Formalized Mathematics, 17(2), 129-136, 2009, RefereedWebofScience電子ジャーナル
  • Properties of Primes and Multiplicative Group of a Field
    Kenichi Arai,Hiroyuki Okazaki
    Formalized Mathematics, 17(2), 151-155, 2009, RefereedWebofScience電子ジャーナル
  • Uniqueness of Factoring an Integer and Multiplicative Group Z/pZ*
    Hiroyuki Okazaki,Yasunari Shidama
    Formalized Mathematics, 16(2), 103-107, 2008, RefereedWebofScience電子ジャーナル
  • Preliminary Study on a Watermarking Scheme Using Background Pattern to Protect Printed Documents
    Katsuki Kobayashi,Heman Aguirre,Hiroyuki Okazaki,Kiyoshi Tanaka
    Journal of Signal Processing, 11(4), 337-340, 2007, Refereed
  • A Watermarking Scheme using Background Pattern to Protect Printed Documents
    Katsuki Kobayashi, Kiyoshi Tanaka, Hernan Aguirre, Hiroyuki Okazaki, Hisayoshi Kunimune,Katsumi Wasaki, Masaaki Niimura, Yasushi Fuwa
    Proc. International Workshop on Nonlinear Circuits and Signal Processing (NCSP 2007), 2007, Refereed
  • An evolutionary multiobjective approach to design highly non-linear Boolean functions
    Hernan E. Aguirre, Hiroyuki Okazaki, Yasushi Fuwa
    Genetic and Evolutionary Computation Conference (GECCO 2007), 749-756, 2007, Refereed
  • Inferior Limit, Superior Limit and Convergence of Sequences of Extended Real Numbers
    Hiroshi Yamazaki, Noboru Endou, Yasunari Shidama,Hiroyuki Okazaki
    Formalized Mathematics, 15(4), 231-235, 2007, RefereedWebofScience電子ジャーナル
  • ヴェイユペアリングを用いた署名者の関連付けが可能なグループ署名方式
    岡崎 裕之, 境 隆一, 柴山 潔, 笠原 正雄
    電子情報通信学会論文誌, J87-A(No.4), 563~568, 2004, Refereed
  • 合成数P^2Qの素因数分解に適した楕円曲線
    岡崎 裕之, 境 隆一, 笠原 正雄
    日本応用数理学会論文誌, Vol.12(No.4), 9~19, 2002, Refereed

MISC

  • Formal Definition of Probability and Probabilistic Function on Finite and Discrete Sample Space for Proving Security of Cryptographic Systems Using Mizar.
    Hiroyuki Okazaki, Yasunari Shidama,Yuichi Futa
    2011 Joint Mathematics Meetings (JMM2011), (1067-94-740), 156, 09 Jan. 2011
  • Meta Ring Signature Scheme
    H. Okazaki, R. Sakai and M.Kasahara
    Cryptology ePrint Archive, (2005/310), 2005

Lectures, oral presentations, etc.

  • オープンサイエンスにおける研究公正を追求するNextCloudカスタムアプリケーションの有用性の検討とGakuNinRDMとの比較
    藤岡碧志,岡崎裕之,鈴木彦文
    情報処理学会インターネットと運用技術研究会, 08 Mar. 2022, 情報処理学会, Not invited
  • ブロックチェーン技術を用いたDNSキャッシュポイズニング検知方式の評価
    田中 健士朗, 布田 裕一, 岡崎裕之, 鈴木彦文
    電子情報通信学会ICSS研究会, 28 Feb. 2022, 電子情報通信学会, Not invited
  • SDNを用いたDDoS攻撃に対する防御機構構築
    徳山 凌, 布田 裕一, 鈴木 彦文, 岡崎 裕之
    2022年暗号と情報セキュリティシンポジウム(SCIS2022), 2022, 電子情報通信学会
  • SVMによる工場ネットワークにおける偽装通信の検知手法のリアルタイム性の検証
    原田 雄基,布田 裕一, 岡崎 裕之
    2022年暗号と情報セキュリティシンポジウム(SCIS2022), 2022, 電子情報通信学会
  • ProVerifによる検索可能暗号の形式的安全性検証について
    鈴木 孝誠, 山本 博章, 三重野 武彦, 荒井 研一, 岡崎 裕之, 布田 裕一
    2022年暗号と情報セキュリティシンポジウム(SCIS2022), 2022, 電子情報通信学会
  • 情報セキュリティ人材育成のための形式的安全性検証ツール学習用eラーニング環境の構築
    大町 隆人, 岡崎 裕之, 布田 裕一, 村上 恭通
    第8回 実践的IT教育シンポジウム rePiT2022, 2022, 日本ソフトウェア科学会, enPiT2 共催
  • SVMを用いた制御システムに対する偽装命令攻撃の検知
    原田雄基, 布田裕一, 岡崎裕之
    電子情報通信学会ISEC(研究会(ISEC2021-15), 19 Jul. 2021, Not invited
  • GakuninRDMとオンプレミスNextCloudとの連携による研究不正対策基盤の構築と運用の提案
    藤岡碧志,岡崎裕之,鈴木彦文
    情報処理学会インターネットと運用技術研究会(IOT54), 09 Jul. 2021, 情報処理学会, Not invited
  • 制御システムにおける異常検知手法とデータセットの評価
    原田 雄基, 布田 裕一, 岡崎 裕之
    2021年暗号と情報セキュリティシンポジウム(SCIS2021), 2021, 電子情報通信学会, Not invited
  • ProVerifを用いたスポンジ構造の形式化
    吉村 東悟,荒井 研一,岡崎 裕之,布田 裕一,三重野 武彦
    2021年暗号と情報セキュリティシンポジウム(SCIS2021), 2021, 電子情報通信学会, Not invited
  • 第四世代鍵共有方式ID-NIKS IVを利用した新たな認証アーキテクチャ
    三重野 武彦, 岡崎 裕之, 布田 裕一, 村上 恭通
    第44回情報理論とその応用シンポジウム(SITA2021), 2021, 電子情報通信学会
  • ProVerifを用いたMD変換の形式化
    吉村 東悟,荒井 研一,岡崎 裕之,布田 裕一,三重野 武彦
    日本応用数理学会 2020年度 年会, 2020, 日本応用数理学会
  • Formalization of Security Requirements and Attack Models for Cryptographic Hash Functions in ProVerif
    Togo Yoshimura, Kenichi Arai, Hiroyuki Okazaki, Yuichi Futa
    The 2019 International Conference on Security and Management (SAM'19), 2019
  • 認証ログをライフログとして用いた安否確認システムの開発
    森田 拓哉, アサノ デービッド, 鈴木 彦文, 岡崎 裕之
    ICSS研究会 ICSS2019 6 27-30, 2019, 電子情報通信学会
  • Formalization of Security Requirements and Attack Models for Cryptographic Hash Functions in ProVerif
    Togo Yoshimura, Kenichi Arai, Hiroyuki Okazaki, Yuichi Futa
    The 2019 International Conference on Security and Management (SAM'19), 2019, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Suitable Models for Formal Security Verification of Cryptosystems in ProVerif
    Hiroyuki Okazaki, Yuichi Futa, Kenichi Arai
    The International Symposium on Information Theory and Its Applications(ISITA2018), 2018, IEICE
  • e-Learning System for Cryptography on Moodle
    Tatsuki Miyamoto, Shogo Shimura, Tatsuki Watanabe, Hiroyuki Okazaki, Yuichi Futa, Yasuyuki Murakami
    Internet Conference 2018 (IC2018), 2018, IPSJ
  • Privacy Preserving Logic Formula Calculation in Cloud
    Hiroshi Yamaguchi, Shigeo Tsujii, Hiroyuki Okazaki, Yasunari Shidama
    2016 IEEE Tenth International Conference on Semantic Computing (ICSC), 2016, IEEE
  • Formalization of Statistical Indistinguishability of Probability Distribution Ensembles in Mizar
    Hiroyuki Okazaki
    The International Symposium on Information Theory and Its Applications 517-521, 2016, IEICE
  • Content Development for Distance Education in Advanced University Mathematics Using Mizar
    Takaya Ido, Hiroyuki Okazaki, Hiroshi YAMAZAKI, Pauline Naomi KAWAMOTO, Katsumi WASAKI, Yasunari Shidama
    The 2013 International Conference on e-Learning, e-Business, Enterprise Information Systems, and e-Government(EEE'13), 2013, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Formalization Description of Huffman Coding Trees Using the Mizar
    Takaya Ido, Hiroyuki Okazaki, Yasunari Shidama
    2013 International Conference on Foundations of Computer Science (FCS'13), 2013, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Formalization of Binary Fields and N-dimensional Binary Vector Spaces Using the Mizar Proof Checker
    Kenichi Arai, Hiroyuki Okazaki, Yasunari Shidama
    2013 International Conference on Foundations of Computer Science (FCS'13), 2013, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Formalization of Gaussian Integers, Gaussian Rational Numbers, and Their Algebraic Structures with Mizar
    Yuichi Futa, Daichi Mizushima,Hiroyuki Okazaki
    2012 International Symposium on Information Theory and its Applications (ISITA2012), 2012, IEICE
  • Formalization Verification of AES Using the Mizar Proof Checker
    Hiroyuki Okazaki, Kenichi Arai, Yasunari Shidama
    2012 International Conference on Foundations of Computer Science (FCS'12), 2012, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Formalization Verification of Number Theoretic Algorithms Using the Mizar Proof Checker
    Hiroyuki Okazaki, Yoshiki Aoki, Yasunari Shidama
    2012 International Conference on Foundations of Computer Science (FCS'12), 2012, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Signature as Public Key Structured Cryptosystem and its Application
    Kenichi Arai, Hiroyuki Okazaki
    The 11th International Conference on Security and Management(SAM'12), 2012, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Mizarによる大学数学向け高度遠隔教育用コンテンツ開発
    井戸 貴也,岡崎 裕之,山崎 浩,師玉 康成
    教育工学研究会 ET2012 55 13~17, 2012, 電子情報通信学会
  • ProVerif を用いたPolicy-based Chameleon Hashによる修正可能なブロックチェーンの形式化
    杉山 航平, 荒井 研一,岡崎 裕之,布田 裕一,三重野 武彦
    日本応用数理学会 2021年度 年会, 07 Sep. 2011, 日本応用数理学会
  • Formalization Verification of DES Using the Mizar Proof Checker
    Hiroyuki Okazaki, Kenichi Arai, Yasunari Shidama
    2011 International Conference on Foundations of Computer Science, Jul. 2011, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • Mizarによる数論アルゴリズムの形式化と検証
    青木 祥希,岡崎 裕之,師玉 康成
    ライフインテリジェンスとオフィス情報システム研究会 LOIS2011 38 69~74, 2011, 電子情報通信学会
  • Formalization of Probability and Random Sampling on a Finite and Discrete Sample Space Using the Mizar Proof Checker
    Kenichi Arai, Nobuaki Kondo, Hiroyuki Okazaki
    2010 International Conference on Foundations of Computer Science, Jul. 2010, World Congress in Computer Science, Computer Engineering, and Applied Computing
  • An evolutionary multiobjective approach to design highly non-linear Boolean functions
    Hernan E. Aguirre, Hiroyuki Okazaki, Yasushi Fuwa
    Genetic and Evolutionary Computation Conference (GECCO 2007), 2007, ACM
  • A watermarking scheme using background pattern to protect printed documents
    Katsuki Kobayashi, Kiyoshi Tanaka, Hernan Aguirre, Hiroyuki Okazaki, Hisayoshi Kunimune,Katsumi Wasaki, Masaaki Niimura, Yasushi Fuwa
    Proc. International Workshop on Nonlinear Circuits and Signal Processing (NCSP 2007), 2007, 信号処理学会
  • メタリング署名
    岡崎 裕之, 境 隆一, 笠原 正雄
    情報セキュリティ研究会 ISEC2005 36 201~204, 2005, 電子情報通信学会
  • リンク可能なグループ署名に関する考察
    岡崎 裕之, 境 隆一, 柴山 潔, 笠原 正雄
    情報セキュリティ研究会 ISEC2003 55 35~38, 2003, 電子情報通信学会
  • ペアリングを用いたグループ署名に関する2,3の考察
    岡崎 裕之, 境 隆一, 柴山 潔, 笠原 正雄
    情報セキュリティ研究会 ISEC2002 64 53~60, 2002, 電子情報通信学会
  • ベイユ・テイトペアリングを用いたグループ署名
    境 隆一, 岡崎 裕之, 笠原 正雄
    情報セキュリティ研究会 ISEC2001 108 105~108, 2001, 電子情報通信学会

Affiliated academic society

  • 2001
    The Institute of Electronics, Information and Communication Engineers
  • 2002
    Japan Society for Industrial and Applied Mathematics
  • 2019
    Japanese Society for Software Science and Technology

Research Themes

  • Formal verification of cryptosystem

Academic Contribution Activities

  • 電子情報通信学会, 2006
  • 日本応用数理学会, 2006