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2019 年度 実績報告書

離散数学とその応用

研究課題

研究課題/領域番号 18J23484
研究機関京都大学

研究代表者

AZAM NAVEED AHMED  京都大学, 情報学研究科, 特別研究員(DC1)

研究期間 (年度) 2018-04-25 – 2021-03-31
キーワードSubstitution box / Elliptic curve / Image encryption / PCG / Chemical graphs / Linear programming / Neural networks / Graph enumeration
研究実績の概要

Our research project mainly focuses on the enumeration of graphs and cryptography. We have developed efficient methods to enumerate all pairwise compatibility graphs with a given number of vertices by using Linear programming and branch and bound algorithms. From this part of our research, we produced three papers. We have developed a method to efficiently count all trees with a given number of vertices and self-loops based on dynamic programming and published a paper. We developed a system to infer acyclic and monocyclic chemical graphs with given chemical properties by using linear programming, neural networks, and branch and bound algorithm and produced two papers. We have developed an efficient algorithm to generate substitution boxes over elliptic curves for secure data transfer. Furthermore, we have developed a fast and secure image encryption scheme based on elliptic curves and produced three papers.

現在までの達成度 (区分)
現在までの達成度 (区分)

1: 当初の計画以上に進展している

理由

We have produced nine (9) papers related to substitution box, image encryption, graph enumeration. Due to the current situation because of coronavirus pandemic, the review process of some of our papers is delayed and some conferences have been canceled. However, even with this state, we can say that the research is progressing according to the research plan.

今後の研究の推進方策

Our future aim is to further (1) improve our graph enumeration method so that it can work for a large number of vertices; (2) extend our method to enumerate all trees with vertices and self-loops; (3) extend our system to infer any chemical graph with a given property; (4) improve our cryptosystem and extend it for biomedical images.

  • 研究成果

    (9件)

すべて 2019

すべて 雑誌論文 (4件) (うち国際共著 4件、 査読あり 4件、 オープンアクセス 1件) 学会発表 (5件) (うち国際学会 5件)

  • [雑誌論文] Efficient and secure substitution box and random number generators over Mordell elliptic curves2019

    • 著者名/発表者名
      Ikram Ullah, Naveed Ahmed Azam and Umar Hayat
    • 雑誌名

      Journal of Information Security and Applications

      巻: Conditionally accepted ページ: N/A

    • 査読あり / 国際共著
  • [雑誌論文] A Fast and Secure Image Encryption Scheme Based on Elliptic Curves2019

    • 著者名/発表者名
      Ikram Ullah, Naveed Ahmed Azam and Umar Hayat
    • 雑誌名

      IEEE Access

      巻: Conditionally accepted ページ: N/A

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] A method for enumerating pairwise compatibility graphs with a given number of vertices2019

    • 著者名/発表者名
      Naveed Ahmed Azam, Aleksandra Shurbevski, Hiroshi Nagamochi
    • 雑誌名

      Discrete Applied Mathematics

      巻: Conditionally accepted ページ: N/A

    • 査読あり / 国際共著
  • [雑誌論文] Efficient Construction of a Substitution Box Based on a Mordell Elliptic Curve Over a Finite Field2019

    • 著者名/発表者名
      Naveed Ahmed Azamy, Umar Hayat, Ikram Ullah
    • 雑誌名

      Frontiers of Information Technology & Electronic Engineerin

      巻: 20 ページ: 1378-1389

    • 査読あり / 国際共著
  • [学会発表] A novel method for the inverse QSAR/QSPR based on artificial neural networks and mixed integer linear programming with guaranteed admissibility2019

    • 著者名/発表者名
      Rachaya Chiewvanichakorn
    • 学会等名
      13th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 3 BIOINFORMATICS: BIOINFORMATICS
    • 国際学会
  • [学会発表] Counting tree-like graphs with a given number of vertices and self-loops2019

    • 著者名/発表者名
      Naveed Ahmed Azam
    • 学会等名
      3rd International Workshop on Enumeration Problems and Applications
    • 国際学会
  • [学会発表] An improved method for enumerating pairwise compatibility graphs with a given number of vertices2019

    • 著者名/発表者名
      Naveed Ahmed Azam
    • 学会等名
      Asian Association for Algorithms and Computation
    • 国際学会
  • [学会発表] On the Enumeration of Minimal Non-Pairwise Compatibility Graphs2019

    • 著者名/発表者名
      Naveed Ahmed Azam
    • 学会等名
      46th International Workshop on Graph-Theoretic Concepts in Computer Science
    • 国際学会
  • [学会発表] A Novel Method for the Inverse QSAR/QSPR to Monocyclic Chemical Compounds Based on Artificial Neural Networks and Integer Programming2019

    • 著者名/発表者名
      Naveed Ahmed Azam
    • 学会等名
      The 21st Int'l Conf on Bioinformatics & Computational Biology
    • 国際学会

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公開日: 2021-01-27  

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