Dr. Fatih Özkaynak

Biography
  • B.Sc., in Computer Engineering, Fırat University, 2001-2005
  • M.Sc., in Computer Engineering, Fırat University, 2005-2007
  • Ph.D., in Computer Engineering, Yıldız Technical University, 2009-2013
 
Research Areas
  • Symmetric cryptography
  • Efficient software implementation of cryptographic algorithms,
  • Random number generators
  • Data Compression for Medical Data Security

Work Experience
  • Founder, Kriptarium Inc. 2015-present
  • Professor, Department of Software Engineering, Fırat University, 2023-present
  • Advisory Board Member, TUBİTAK ARDEB/EEEAG, 2022-present
  • Associate Professor, Department of Software Engineering, Fırat University, 2018-2023
  • Deputy Director, Fırat University Graduate School of Natural and Applied Sciences, 2020-2023 
  • Assistant Professor, Department of Software Engineering, Fırat University, 2016-2018
  • Research Assistant, Department of Software Engineering, Fırat University, 2011-2016
  • Lecturer, Maden Vocational Schools, Fırat University, 2011 (6 months)
  • Research Assistant, Department of Computer Engineering, Tunceli University, 2009-2011
  • Computer Engineer, IT Center, Bozok University, 2009 (6 months)
  • Internship, Havelsan/Bilişim Ltd., Ankara, 2004 (4 weeks)
  • Internship, IGDAS/Koc Byrce, Istanbul, 2003 (4 weeks)
 
Projects
  • Project Manager - Tübitak 1001 project 123R055 "Discovery of Chaotic Systems with Artificial Intelligence: Development, Analysis and Practical Applications of New Models" (Yapay Zeka ile Kaotik Sistemlerin Keşfi: Yeni Modellerin Geliştirilmesi, Analizi ve Pratik Uygulamaları), 01.02.2024 - 01.02.2027
  • Project Manager - Tübitak 1001 project 122R060 "Design and Practical Implementation of A New Image Compression Algorithm Based on Fractional Order Systems" (Kesir Mertebeli Sistemler Temelli Yeni Bir Görüntü Sıkıştırma Algoritmasının Tasarımı ve Pratik Uygulamalarının Geliştirilmesi), 15.10.2022 - 15.04.2025
  • Project Manager - Tübitak 1002 project 122R014 "A New Random Number Generator Based on the Lava Lamp Entropy Wall" (Lav Lambası Entropi Duvarı Temelli Yeni Bir Rasgele Sayı Üreteci), 10.08.2023 - 10.08.2024
  • Project Manager - Tübitak 2219 project 122E337 "Investigation of New Solution Proposals for Effective and SecureStorage of Glioma Magnetic Resonance Images" (Glioma Manyetik Rezonans Görüntülerinin Efektif ve Güvenli Depolanması için Yeni Çözüm Önerilerinin Araştırılması) COST Supports, 15.10.2022 - 15.10.2024
  • Project Manager - Tübitak 1002  project 122R008 "Study to Create a Dataset to Provide More Effective Coordination After the Earthquake Using Artificial Intelligence Technologies" (Yapay Zeka Teknolojilerini Kullanarak Deprem Sonrasında Daha Etkili Koordinasyon Sağlayabilmek Için Veriseti Oluşturma Çalışması) 01.04.2023 - 01.07.2023
  • Project Manager - Tübitak 1005  project 121E600 "Hardware Encrypted Data Storage Unit" (Donanım Şifreli Veri Depolama Birimi - Ulusal Yeni Fikirler ve Ürünler Araştırma Destek Programı) 01.03.2022 - 01.11.2023
  • Researcher - Tübitak 1001 project, 121E210 “Design of Secure Storage Hardware Based on Chaos, Biometrics and Physical Unclonable Function for Images Collected with Unmanned Aerial Vehicles” (İnsansız Hava Araçları Ile Toplanan Görüntüler Için Kaos, Biyometri Ve Fiziksel Klonlanamaz Fonksiyon Temelli Güvenli Depolama Donanımı Tasarımı) 01.10.2021 -01.10.2024
  • Advisor - Tübitak 1002 - 121E003 "Electronic Circuit Design and Real Time Application of Fractional Chaotic System Based Random Number Generator" Kesir Dereceli Kaotik Sistem Tabanlı Rasgele Sayı Üretecinin Elektronik Devre Tasarımı ve Gerçek Zamanlı Uygulaması, 01.04.2021 - 01.04.2022
  • Project Manager - Tübitak 1002  - 120E444 The Analysis of Robust Key Generators Using Chaotic Entropy Sources and Optimization Algorithms Design and Development of Practical Applications for Mobile Platforms” (Kaotik Entropi Kaynakları ve Optimizasyon Algoritmaları Kullanılarak Gürbüz Anahtar Üreteçlerinin Tasarımı ve Mobil Platformlar için Pratik Uygulamalarının Geliştirilmesi), 01.12.2020 -01.12.2021​
  • Working Group Member, COST Action CA17121 “Correlated Multimodal Imaging in Life Sciences”  – European Cooperation in Science and Technology (COST)
  • Working Group Member, COST Action CA18206 “Glioma MR Imaging 2.0”  – European Cooperation in Science and Technology (COST)
  • Working Group Member, CA19143 “Global Digital Human Rights Network” – European Cooperation in Science and Technology (COST)
  • Project Manager - Firat University Scientific Research Project (TEKF 20.21), Generation of Substitution Boxes Based on Random Selection and Implementation of Its Practical Applications (Rasgele Seçim Tabanlı Yer Değiştirme Kutularının Üretilmesi ve Pratik Uygulamalarının Gerçekleştirimi)
  • Project Manager, Firat University Scientific Research Project (TEKF 20.13), Improvement of a Robust Image Encryption Algorithm for the Security of Digital Images (Sayısal Görüntülerin Güvenliği için Gürbüz Bir Görüntü Şifreleme Algoritmasının Geliştirilmesi)
  • Working Group Member, COST Action CA16228, GAMENET, the European Network for Game Theory
  • Working Group Member, COST Action CA17137, A network for Gravitational Waves, Geophysics and Machine Learning – European Cooperation in Science and Technology (COST)
  • Working Group Member, COST Action CA15225, Fractional Systems – European Cooperation in Science and Technology (COST)
  • Working Group Member, COST Action CA17124, Digital forensics: evidence analysis via intelligent systems and practices) – CA17124 is funded by the European Cooperation in Science and Technology (COST)
  • Advisor, TUBITAK 1002, Determination of Electrochemical Properties of Supercapacitors Using Ruo2 / Go / Ag Nanocomposite Electrodes and Obtaining Fractional Order Models, September 2019- September 2020
  • Project Manager, Firat University Scientific Research Project (TEKF 20.13), Improvement of a Robust Image Encryption Algorithm for the Security of Digital Images, Sayısal Görüntülerin Güvenliği için Gürbüz Bir Görüntü Şifreleme Algoritmasının Geliştirilmesi, 2020-2021
  • Project Manager, Firat University Scientific Research Project (TEKF 19.18), Development of New Algorithms for Performance Improvement of Chaotic Substitution Boxes, Kaotik Yer Değiştirme Kutularının Performans İyileştirmesi için Yeni Algoritmaların Geliştirilmesi, 2019-2020
  • Project Manager, Firat University Scientific Research Project (TEKF 19.02), Improvement of New Security Criteria and Analysis Methods using Relationship Between Chaos and  Cryptography, Kaos ve Kriptoloji Arasındaki İlişkiyi Kullanarak Yeni Güvenlik Ölçütleri ve Analiz Metotlarının Geliştirmesi, 2019-2020
  • Project Manager,Firat University Scientific Research Project (TEKF 18.02), Design and Analysis of Robust Substitution Boxes based on Random Selection, 2018-2019
  • Project Manager, Republic of Turkey Ministry of Science, Industry and Technology; Secure Data Processing Platform for Privacy Information, 2015-2016.
  • Advisor, TUBITAK 4007 - Cryptography Workshop for Kids, 2016
  • Scholarship, Firat University Scientific Research Project, Implementation of Software That Calculates The Lyapunov Exponents in Nonlinear Systems, 2006-2007.
 
Thesis
  • Ph.D. Thesis, Design and Analysis of Chaos Based Symmetric Encryption Systems (Kaos Tabanlı Simetrik Şifreleme Sistemlerinin Tasarım ve Analizi), 2013 (indir)
  • M.Sc. Thesis,Implementation of Software That Calculates The Lyapunov Exponents in Nonlinear Systems (Doğrusal Olmayan Sistemlerde Lyapunov Üstellerini Hesaplayan Yazılımın Gerçekleştirilmesi), 2007.
 
Journal Papers
  1. (SCI) Aydın Y., Özkaynak F., (2024) Automated Chaos-Driven S-Box Generation and Analysis Tool for Enhanced Cryptographic Resilience," in IEEE Access, vol. 12, pp. 312-328, 2024, doi: 10.1109/ACCESS.2023.3346319
  2. (SCI) Artuğer F., Özkaynak F., (in press) A new algorithm to generate aes-like substitution boxes based on sine cosine optimization algorithm. Multimed Tools Appl. https://doi.org/10.1007/s11042-023-17200-0
  3. (SCI) Barua, P.D., Kirik, S., Dogan, S. et al. ExDarkLBP: a hybrid deep feature generation-based genetic malformation detection using facial images. Multimed Tools Appl (2023). https://doi.org/10.1007/s11042-023-17057-3
  4. (SCI) Artuğer F., Özkaynak F., (2024) A new post-processing approach for improvement of nonlinearity property in substitution boxes, Integration 94, 102105
  5. (SCI) Artuğer F., Özkaynak F., (2023) Chaotic Quantization based JPEG for effective compression of whole slide images, The Visual Computer 39 (11), 5609-5623 https://doi.org/10.1007/s00371-022-02684-y
  6. (TR Dizin) Aydın Y., Özkaynak F., (2023) An Analysis Tool for Cryptographic Designs Based on Chaotic Systems. Turkish Journal of Science and Technology, 18(2), 387-395. https://doi.org/10.55525/tjst.1287092
  7. (SCI) Artuğer F., Özkaynak F., (2022) SBOX-CGA substitution box generator based on chaos nd genetic algorithm, Neural Computing and Applications 34 (22) 20203-20211
  8. (SCI) Artuğer F., Özkaynak, F., (2022) A method for generation of substitution box based on random selection, Egyptian Informatics Journal
  9. (SCI) Kavuran G., Gürgenç T., Özkaynak F., (2022) On the modeling of the multi-segment capacitance: a fractional-order model and Ag-doped SnO2 electrode fabrication, Journal of Materials Science 57 (4) 2775-2793 
  10. (TR Dizin) Turan, E., Özdemir, MK., Karakaya, B., Özkaynak, F., (2022) A Substitution-Box Structure Based on Solar Panel Data, Turkish Journal of Science and Technology
  11. (SCI) Artuğer F., Özkaynak, F., (2021) An effective method to improve nonlinearity value of substitution boxes based on random selection, Information Sciences 576, 577-588
  12. (SCI-E) Muhammad A. S., Özkaynak, F., (2021) SIEA: Secure Image Encryption Algorithm Based on Chaotic Systems Optimization Algorithms and PUFs, Symmetry 13 (5), 824
  13. (SCI-E) Açıkkapı, M. S., Özkaynak, F., (2021) A Method to Determine the Most Suitable Initial Conditions of Chaotic Map in Statistical Randomness Applications, IEEE Access 9, 1482-1494
  14. (SCI) Özkaynak, F., (2020) On the Effect of Chaotic System in Performance Characteristics of Chaos Based S-box Designs, Physica A: Statistical Mechanics and its Applications, Volume 550, 124072, https://doi.org/10.1016/j.physa.2019.124072 (impact factor: 2.464)
  15. (SCI-E) Artuğer F., Özkaynak, F., (2020) A Novel Method for Performance Improvement of Chaos-Based Substitution Boxes, Symmetry 2020, 12, 571, doi:10.3390/sym12040571. (impact factor: 2.143)
  16. (SCI-E) Muhammad, Z. M. Z., Özkaynak, F., (2020) An Image Encryption Algorithm Based on Chaotic Selection of Robust Cryptographic Primitives, IEEE Access, Volume 8, Pages: 56581 - 56589, DOI: 10.1109/ACCESS.2020.2982827​ (impact factor: 4.098)
  17. (SCI-E) Özkaynak, F., (2020) A Novel Random Number Generator Based on Fractional Order Chaotic Chua System" Elektronika ir Elektrotechnika 26(1), 52-57. https://doi.org/10.5755/j01.eie.26.1.25310 (impact factor: 1.088)
  18. Tanyıldızı, E., Özkaynak, F., (2020). A Statistical Randomness Generation Algorithm Based on Nonlinear Behavior of Discrete Time Chaotic Systems. Turkish Journal of Science and Technology , 15 (1) , 13-18 . Retrieved from: https://dergipark.org.tr/en/pub/tjst/issue/52579/690818
  19. (SCI-E) Özkaynak, F., (2020) An Analysis and Generation Toolbox for Chaotic Substitution Boxes: A Case Study Based on Chaotic Labyrinth Rene Thomas System, Iranian Journal of Science and Technology-Transactions of Electrical Engineering, 44(1), 89-98 Springer, DOI: 10.1007/s40998-019-00230-6​ (impact factor: 0.519)
  20. (SCI-E) Tanyıldızı, E., Özkaynak, F., (2019) A New Chaotic S-Box Generation Method Using Parameter Optimization of One Dimensional Chaotic Maps,  IEEE Access, Volume 7, Page(s): 117829-117838, DOI: 10.1109/ACCESS.2019.2936447 (impact factor: 4.098).(pdf)
  21. (SCI-E) Özkaynak, F., (2019) Construction of Robust Substitution Boxes Based on Chaotic Systems, Neural Computing and Applications, August 2019 Volume 31, Issue 8, pp 3317–3326, DOI: 10.1007/s00521-017-3287-y  (impact factor: 2.505)​
  22. (SCI-E) Muhammad, Z. M. Z., Özkaynak, F., (2019) Security Problems of Chaotic Image Encryption Algorithms Based on Cryptanalysis Driven Design Technique,  IEEE Access, Volume 7, Page(s): 99945 - 99953, DOI: 10.1109/ACCESS.2019.2930606​ (impact factor: 4.098).(pdf)
  23. Özkaynak, F., (2019) Chaos Based Substitution Boxes as A Cryptographic Primitives: Challenges and Opportunities, Chaotic Modeling and Simulation (CMSIM) 1: 49-57, 2019 (pdf)
  24. (SCI-E) Açıkkapı, M. S., Özkaynak, F., Özer, A. B., (2019) Side-channel Analysis of Chaos-based Substitution Box Structures, IEEE Access, Vol. 7, pp. 79030-79043, DOI: 10.1109/ACCESS.2019.2921708​ (impact factor: 4.098).(pdf)
  25. (SCI) Özkaynak, F., (2018) Brief Review on Application of Nonlinear Dynamics in Image Encryption, Nonlinear Dynamics 92 /2 305-313, https://doi.org/10.1007/s11071-018-4056-x  (impact factor: 3.464).
  26. Özkaynak, F., (2018) The Effects on Performance of Using Chaotic Systems in Entropy Source of Deterministic Random Number Generators, Chaotic Modeling and Simulation (CMSIM) 4: 415-420, 2018 (pdf)
  27. (SCI-E) Özkaynak, F., Çelik, V., Özer, A. B.,(2017) A New S-Box Construction Method Based on the Fractional Order Chaotic Chen System, Signal, Image and Video Processing, 11:659–664 (impact factor: 0.908).
  28. (SCI) Özkaynak, F. , Özer, A. B., (2016). Cryptanalysis of a new image encryption algorithm based on chaos, Optik - International Journal for Light and Electron Optics, Elsevier, 127 (13), 5190-5192 (impact factor: 0.835).
  29. Kamışlıoğlu, M., Külahcı, F., Özkaynak, F., Özer, A. B., (2016). Nonlinear Analysis by Using Artificial Neural Networks of Radon Gas (222Rn) Time Series in Kozan, Adana and Osmaniye, Turkey, Chaotic Modeling and Simulation (CMSIM) 4: 459-467.
  30. (SCI) Özkaynak, F., (2015). A novel method to improve the performance of chaos based evolutionary algorithms, Optik - International Journal for Light and Electron Optics, Elsevier, 126/24, 5434–5438 (impact factor: 0.835).
  31. (SCI) Özkaynak, F., (2014). Cryptographically secure random number generator with chaotic additional input, Nonlinear Dynamics, 78/3, 2015-2020 (impact factor: 3.464)
  32. (SCI) Özkaynak, F., Yavuz S., (2014). Analysis and improvement of a novel image fusion encryption algorithm based on DNA sequence operation and hyper-chaotic system, Nonlinear Dynamics: Volume, 78/2, 1311-1320 (impact factor: 3.464).
  33. (SCI) Özkaynak, F., Yavuz S., (2013). Designing chaotic S-boxes based on time-delay chaotic system, Nonlinear Dynamics, 74/3, 551-557 (impact factor: 3.464).
  34. (SCI) Özkaynak, F., Yavuz S., (2013). Security problems of pseudorandom sequence generator based on Chen chaotic system, Computer Physics Communications 184, 2178–2181 (impact factor: 3.936).
  35. (SCI) Özkaynak, F., Özer, A. B., Yavuz S., (2012). Cryptanalysis of a novel image encryption scheme based on improved hyperchaotic sequences, Optics Communications 285, 4946–4948 (impact factor: 1.588).
  36. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Cryptanalysis of Bigdeli algorithm using Çokal and Solak attack, International Journal of Information Security Science, Vol:1 No:3, 79-81.
  37. (SCI) Özkaynak, F., Özer, A. B., (2010). A method for designing strong S-Boxes based on chaotic Lorenz system. Physics Letters A, 374, 3733–3738 (impact factor: 1.772).
  38. Özkaynak, F., Özer, A. B., (2006). Random Number Generator with Logistic Map and Testing via Statistical Methods. Journal of İstanbul Kültür University, Vol:4, Number:3, 129-133.
  
National Journal Papers (in Turkish)
  1. (TRDizin) Artuğer F., Özkaynak, F., (2022) Görüntü Sıkıştırma Algoritmalarının Performans Analizi için Değerlendirme Rehberi, International Journal of Pure and Applied Sciences 8 (1) 102-110
  2. (TRDizin) Artuğer F., Özkaynak, F., (2018) JPEG Sıkıştırma Algoritmasının Dünü Bugünü ve Geleceği, Fırat Üniv. Müh. Bil. Dergisi, 30(3), 161-167, 2018
  3. (TRDizin) Özkaynak, F., (2016). Sosyal Güvenlik Kurumu Biyometrik Kimlik Doğrulama Sisteminin Problemleri ve Olası Çözüm Önerileri, Fırat Üniversitesi Fen ve Mühendislik Bilimleri Dergisi 28(2), 185-188.
  4. Özkaynak, F., (2015). Kriptolojik Rasgele Sayı Üreteçleri,Türkiye Bilişim Vakfı Bilgisayar Bilimleri ve Mühendisliği Dergisi, Cilt 8, Sayı 2, sayfa 37-44.

International Conference Papers
  1. Özkaynak F., (2023) Sensitive Data at Risk: Examining the Extent of Unauthorized Access in Turkish Hospitals Glioma MR imaging 2.0 4rd Annual Meeting, Porto, Portugal
  2. Özkaynak F., (2023) A critical problem for the security and privacy of mobile phones: an exemplary approach and possible solution proposal for data cloning, Digital Forensics Evidence Analysis via Intelligent Systems and Practices, Cadiz, Spain
  3. Eröz E., Tanyıldızı E., Özkaynak F., (2023) A New Method Based on Particle Swarm Optimization Algorithm to Improve Statistical Randomness Properties, International Conference on Computational Intelligence and Knowledge Economy (ICCIKE) 
  4. Karakuş S., Artuğer F., Özkaynak F., (2023) Comparison of Nonlinearity Value of Substitution Box Generation Approaches, 1st International Conference on Recent Academic Studies ICRAS 2023Aydın Y., Özkaynak F., (2023) S-box Generation with Hénon Map for Block Cipher Algorithms, 3rd International Conference on Scientific and Academic Research
  5. Aydın Y., Özkaynak F., (2023) Comparison of Kantz and Rosenstein Algorithms for Calculating Lyapunov Exponents 3rd International Conference on Scientific and Academic Research
  6. Aydın Y., Özkaynak F., (2023) Logistic and Circle Maps for Robust S-Box Construction in Cryptography 2nd International Conference on Frontiers in Academic Research
  7. Aydın Y., Metin Z. B., Durmuş B., Özkaynak F., (2023) Analysis of Deterministic Key Generators for the Security of UAV Data, 3rd International Conference on Scientific and Academic Research
  8. Eröz E., Tanyıldızı E., Özkaynak F., (2023) Chaotic PCG - A New Key Generation Algorithm Based on Chaotic Selection, 2nd International Conference on Frontiers in Academic Research
  9. Eröz E., Tanyıldızı E., Özkaynak F., (2023) Substitution-box Generator Based on Chaotic Linear Feedback Shift Register, 2nd International Conference on Frontiers in Academic Research
  10. Aydın Y., Özkaynak, F., (2021) Eligibility Analysis of Different Chaotic Systems Derived from Logistic Map for Design of Cryptographic Components, IEEE International Conference Engineering Technologies and Computer Science (EnT)​
  11. Bürhan Y., Özkaynak, F., (2021) The Effects of Knowledge Extraction Approaches on Cryptanalysis Studies and Analysis of the Success of Chaos-Based Countermeasures,13th European Symposium on Computational Intelligence and Mathematics (ESCIM 2021). Budapest (Hungary). October 3rd-6th, 2021​
  12. Bazna S., Arı, A., Özkaynak, F., (2021) Modified Blum Blum Shub Random Number Generator using Chaotic Seed Values, 14th Chaotic Modeling and Simulation International Conference 8 - 11 June 2021
  13. Ibrahim H., Özkaynak, F., (2021) A Substitution-Box Structure Based on Crowd Supply Infinite Noise TRNG, 2021 9th International Symposium on Digital Forensics and Security (ISDFS), 1-5
  14. Ibrahim H., Özkaynak, F., (2021) A Random Selection Based Substitution-box Structure Dataset for Cryptology Applications, IEEE EUROCON 2021-19th International Conference on Smart Technologies, 321-325, 2021
  15. Eröz E., Tanyıldızı, E., Özkaynak, F., (2021)  Determination of Suitable Configuration Parameters for Linear Feedback Shift Register using Binary Bat Optimization Algorithm, IEEE EUROCON 2021-19th International Conference on Smart Technologies, 348-351
  16. Ibrahim H., Özkaynak, F., (2021) A Substitution Box Structure Based on Chaotic May Map, 14th Chaotic Modeling and Simulation International Conference 8 - 11 June 2021
  17. Çakıl A. C., Özkaynak, F., (2021) A Hybrid Key Schedule Algorithm Based on Blum Blum Shub Generator and Chaotic Systems, XVIth International Scientific and Technical Conference IEEE COMPUTER SCIENCE AND INFORMATION TECHNOLOGIES, 22-25 September, 2021 Lviv, Ukraine ​​
  18. Muhammad, Z. M. Z., Özkaynak, F., (2020) A Cryptographic Confusion Primitive Based on Lotka–Volterra Chaotic System and Its Practical Applications in Image Encryption, IEEE 15th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), 25-29 February 2020, Slavske, Ukraine
  19. Muhammad, Z. M. Z., Özkaynak, F., (2020) A New Substitution Box Structure Based on Rikitake Chaotic System, International Conference on Communication and Signal Processing, Proceedings of 85TH RESEARCH WORLD, INTERNATIONAL CONFERENCE,, 21– 22 February, 2020, Bangkok, Thailand
  20. Aydın Y., Özkaynak, F., (2019) Lyapunov exponents as a statistical test tool, International Conference on Engineering Technologies, 25-27 October 2019 Konya, Turkey.
  21. Bahceci Y. S., Özkaynak F., (2019), A new method for performance improvement of chaotic s-box structures International Conference on Engineering Technologies, 25-27 October 2019 Konya, Turkey
  22. Aydın Y., Özkaynak, F., (2019) A Provable Secure Image Encryption Schema Based on Fractional Order Chaotic Systems, The 23rd International Conference ELECTRONICS 2019, 17-19 June, 2019 Palanga, Lithuania.
  23. Bürhan Y., Artuğer F., Özkaynak, F., (2019) A Novel Hybrid Image Encryption Algorithm Based on Data Compression and Chaotic Key Planning Algorithms, IEEE 7th International Symposium on Digital Forensic and Security, June 10-12, 2019, Barcelos, Portugal...
  24. Artuğer F., Özkaynak, F., (2018) Fractal Image Compression Method for Lossy Data Compression, IEEE International Conference on Artificial Intelligence and Data Processing, 28-30 Sept 2018, Malatya, Turkey.
  25. Artuğer F., Özkaynak, F., (2018) Performance Comparisom for Lossy Image Compression Algorithm, International Conference on Communication and Signal Processing (ICCSP), Proceedings of The IIER International Conference pp.7-11, Research World International Conference, Kiev, Ukraine, 17th-18th August 2018.
  26. Özkaynak, F., (2018) Chaos Based Substitution Boxes as A Cryptographic Primitives: Challenges and Opportunities, 11th CHAOS 2018 International Conference, 5 - 8 June 2018 Sapienza University of Rome, Italy.
  27. Özkaynak, F., (2018) The Effects on Performance of Using Chaotic Systems in Entropy Source of Deterministic Random Number Generators, 11th CHAOS 2018 International Conference, 5 - 8 June 2018 Sapienza University of Rome, Italy.
  28. Özkaynak, F., Muhamad, M., (2018) Alternative substitutional box structures for DES, IEEE 6th International Symposium on Digital Forensic and Security (ISDFS) 22-25 March 2018 Antalya, Turkey, DOI: 10.1109/ISDFS.2018.8355368
  29. Özkaynak, F., (2017) Breaking of An Image Encryption Algorithm Based on Chaotic Systems, International Advanced Researches & Engineering Congress-2017, Osmaniye/TURKEY, 16-18 November 2017
  30. Özkaynak, F., Akpınar, Ö. F., (2017) An Application of Homomorphic Encryption for Secure Signal Processing, International Advanced Researches & Engineering Congress-2017, Osmaniye/TURKEY, 16-18 November 2017
  31. Özkaynak, F., (2017) Security Threats and Suggestions After Digital Transformation and Industry 4.0, First International Interdisciplinary Conference on Information and Cyber Security-Global, İstanbul Gelişim Üniversitesi, 20 October 2017 (in Turkish).
  32. Özkaynak, F., (2017). Role of NPCR and UACI Tests in Security Problems of Chaos Based Image Encryption Algorithms and Possible Solution Proposals, 2nd International Conference on Computer Science and Engineering, 05-08 October 2017, Antalya, Turkey (in Turkish).
  33. Özkaynak, F., (2017) From Biometric Data to Cryptographic Primitives: A New Method for Generation of Substitution Boxes, ACM International Conference on Biomedical Engineering and Bioinformatics, September 14-16, 2017, Bangkok, Thailand, ISBN: 978-1-4503-5297-0 doi: 10.1145/3143344.3143355.
  34. Güler, Z.,  Özkaynak, F.,  Çinar, A. (2017) CUDA Implementation of DES Algorithm for Lightweight Platforms, International Conference on Biomedical Engineering and Bioinformatics, September 14-16, 2017, Bangkok, Thailand.
  35. Özkaynak, F., Muhamad, M., (2017). Fast Software Implementation of DES for Lightweight Platforms, International Conference on Artificial Intelligence and Data Processing (IDAP17), September 16-17  2017, Malatya, Turkey.
  36. Özkaynak, F., (2017). A Pseudo Random Number Generator Based on Chaos and Irreducible Polynomial, 10th International Conference on Chaotic Modeling, Simulation and Applications, 30 May - 02 June 2017, Barcelona, Spain.
  37. Özkaynak, F., (2016). Chaotic Systems and Computer Science Applications, International Conference on Computer Science and Engineering, Namık Kemal University, Tekirdağ, Turkey, 20-23 October 2016 (in Turkish).
  38. Özkaynak, F., (2016). Secure Data Processing Platform for Privacy of User Data in Online Applications, International Conference on Computer Science and Engineering, Namık Kemal University, Tekirdağ, Turkey, 20-23 October 2016 (in Turkish).
  39. Özkaynak, F., Özer, A. B., (2016). Importance of Protocols in Desing and Analysis of Modern Cryptographic Systems, International Conference on Computer Science and Engineering, Namık Kemal University, Tekirdağ, Turkey, 20-23 October 2016 (in Turkish).
  40. Özkaynak, F., Özer, A. B., (2016). Security analysis of a chaos-based encryption technique to protect ECG packets for time critical telecardiology applications, ISERD - 56th International Conference on Recent Innovations in Engineering and Technology (ICRIET) Singapore 1-2 July, 2016 (Best Paper).
  41. Özkaynak, F., Özer, A. B., (2016). Cryptanalysis of A New Image Encryption Scheme Based on A Chaotic Function, 2nd International Conference on Engineering and Natural Sciences, Sarajevo, Bosnia and Herzegovina, 24-28 May, 2016.
  42. Özkaynak, F., Özer, A. B., (2016).A Novel S-box Construction Method Based on Chaos and Cyclic Groups, International Conference on Mathematics and Mathematics Education Elazıg, Turkey, 12-14 May 2016.
  43. Özkaynak, F., Özer, A. B., (2015). An Analysis Study on Role of Chaos in Symmetric Encryption Algorithm, The 8th Chaotic Modeling and Simulation International Conference, Paris France, 26 - 29 May 2015.
  44. Özkaynak, F., Özer, A. B., (2015). Entropy Analysis with Lyapunov Exponents for Random Number Generators, The 8th Chaotic Modeling and Simulation International Conference, Paris France, 26 - 29 May 2015.
  45. Özkaynak, F., Özdemir, H. İ., Özer, A. B., (2015). Cryptographic Random Number Generator for Mobile Devices, 23th IEEE Signal Processing and Communications Applications Conference, Malatya, Turkey (in Turkish).
  46. Özkaynak, F., Özer, A. B., (2015). Cryptographic Hash Functions and Application Areas in Digital Forensics, 3rd International Symposium on Digital Forensics and Security, Ankara, Turkey (in Turkish).
  47. Kamışlıoğlu, M., Külahcı, F., Özkaynak, F., Özer, A. B., (2014). Nonlinear Aanalysis and Test of Radon Gas (222RN) Time Series by Using Artifical Neural Network, Istanbul, Turkey.
  48. Özkaynak, F., Özer, A. B., Yavuz S., (2013). Evaluation Criteria for Chaos Based Cryptographic Systems, A Special Conference: Open Problems in Mathematical and Computational Sciences, Tübitak, İstanbul, Turkey.
  49. Özkaynak, F., Özer, A. B., Yavuz S., (2013). Security analysis of an encryption algorithm based on cellular automata and chaos, 6th International Conference on Information Security and Cryptology, Ankara, Turkey.
  50. Özkaynak, F., Özer, A. B., Yavuz S., (2013). A Security Analysis of An Image Encryption Algorithm Based on Chaos and DNA Encoding, 21th IEEE Signal Processing and Communications Applications Conference, Cyprus.
  51. Kamışlıoğlu, M., Külahcı, F., Özkaynak, F., (2013). Nonlinear reply of radon and deterministic chaos. The 6th Chaotic Modeling and Simulation International Conference, Istanbul, Turkey.
  52. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Analysis of Chaotic Methods for Compression and Encryption Processes in Data Communication, 20th IEEE Signal Processing and Communications Applications Conference, Muğla, Turkey.
  53. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Differential Cryptanalysis of Block Ciphers Based on Randomly Selected Substitution Boxes, 5th International Conference on Information Security and Cryptology, Ankara, Turkey.
  54. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Cryptanalysis of Chaos Based Mixed Keystream Generation for Voice Data Encryption, 3th World Conference on Information Technology, Barcelona, Spain.
  55. Özer, A. B., Özkaynak, F.,  (2010). A Cryptographic pseudo random bit sequence generator with chaos-based coding table", 1th International Symposium on Computing in Science & Engineering, Kuşadası, Turkey.
 
National Conference Papers (in Turkish)
  1. Özkaynak, F., Özer, A. B., (2015). Rasgele Seçim Tabanlı S-box Yapıları, II. Ulusal Kripto Günleri Çalıştayı, Bilgem/Tübitak.
  2. Özkaynak, F., Özer, A. B., (2013). Çevik Yaklaşımla Yazılım Geliştirme Süreçlerinde Görev Atama Problemi için Yeni Bir Yöntem, Çevik Yaklaşımla Yazılım Geliştirme Çalıştayı (7. Ulusal Yazılım Mühendisliği Sempozyumu kapsamında), Ege Üniversitesi, İzmir.
  3. Özkaynak, F., Özer, A. B., Yavuz S., (2013). Kaos Tabanlı Kriptolojik Tasarımların Analizi için Yeni Bir Değerlendirme Kriteri, 2. Uluslararası Karmaşık Dinamik Sistemler ve Uygulamaları Çalıştayı, Işık Üniversitesi, İstanbul.
  4. Özkaynak, F., Özer, A. B., Yavuz S., (2013). Kriptolojik Uygulamalarda İstatistiki Rasgelelik Testlerinin Problemleri, Kripto Günleri, Bilgem/Tübitak.
  5. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Modern Kriptolojik Sistemlerin Tasarlanmasında Kaotik Dinamiklerin Uygulamaları, 1. Ulusal Karmaşık Dinamik Sistemler ve Uygulamaları Çalıştayı, Ankara.
  6. Özkaynak, F., Özer, A. B., Yavuz S., (2012). Doğanın Hesapsal Güzelliklerinden Öğrendiğimiz Görüntü Şifreleme Algoritmaları, Akıllı Sistemlerde Yenilikler ve Uygulamaları Sempozyumu, Trabzon.
  7. Kırkıl, K.,  Özer, A. B., Özkaynak, F.,  (2012). Kaos Tabanlı Kriptolojik Özetleme Fonksiyonları, Akıllı Sistemlerde Yenilikler ve Uygulamaları Sempozyumu, Trabzon.
  8. Özkaynak, F., Özer, A. B., (2012). Yazılım Proje Yönetiminde Kullanılan Sezgisel Yöntemlerinin Geliştirilmesi için Kaos Tabanlı Çözümler, VI. Ulusal Yazılım Mühendisliği Sempozyumu, Ankara.
  9. Özkaynak, F., Özer, A. B., Yavuz S., (2011). Kaos Tabanlı Yeni Bir Blok Şifreleme Algoritması, IV. Ağ ve Bilgi Güvenliği Sempozyumu, Ankara.
  10. Özkaynak, F., Özer, A. B., (2010). Kaos Tabanlı S-Box Üreteçlerinin Güçlendirilmesi için Yeni Bir Algoritma, Elektrik - Elektronik ve Bilgisayar Mühendisliği Sempozyumu, Bursa.
  11. Özkaynak, F., Öksüztepe E., (2010). Kaotik Zaman Serilerinin Analizi, Bilimde Modern Yöntemler Sempozyumu.
 
Citations
  • Sum of the Times Cited: 2083 / h-index: 23 (01.02.2024 - Google Scholar)​
  • Web of Sciences - 31.12.2023 - https://orcid.org/0000-0003-1292-8490
Supervision
  • Current:
    • Beyzanur Durmuş (PhD)
    • Ahmet Can Çakıl (PhD)
    • Zülfiye Beyza Metin (PhD)
    • Mehmet Ekinci (MSc)
    • Şükrü Furkan Ceylan (MSc)
    • İlker Yılmaz (MSc)
    • Ahmet Karakaya (MSc)
    • Bekir Can Yaranlı (MSc)
    • Elif Nisa Erdem (MSc)
 
  • Former:
    • Yılmaz Aydın (PhD) - 2024
    • Fırat Artuğer (PhD) - 2022 Improvement of hybrid data compression algorithms and practical applications / Hibrit veri sıkıştırma algoritmalarının geliştirilmesi ve pratik uygulamaları
    • Yücel Bürhan (PhD) - 2022 Developing countermeasures and designing practical applications to prevent side-channel attacks, Yan kanal saldırılarını engellemek için karşı önlemlerin geliştirilmesi ve pratik uygulamalarının tasarlanması
 
    • Ahmet Can Çakıl (MSc) - 2023 A new key scheduling algorithm using blum blum shub generator hardware implementation and chaotic seed values / Blum blum shub üretecinin donanım gerçekleştirmesi ve kaotik tohum değerleri kullanılarak yeni bir anahtar planlama algoritması
    • Betül Demir (MSc)- 2023 Developing secure compression algorithms for digital images / Dijital görüntüler için güvenli sıkıştırma algoritmaları geliştirme
    • Zülfiye Beyza Metin (MSc) - 2023 A secure storage platform for images stored by unmanned aerial vehicles / İnsansız hava araçları ile depolanan görüntüler için güvenli bir depolama platformu
    • Mukhlis Ibrahem Muhammad (MSc) - 2018 "Lightweight implementation of DES algorithm for resource constrained devices"
    • Yılmaz Aydın (MSc) 2019 - "Improvement of new security criteria and analysis methods using relationship between chaos and cryptography / Kaos ve kriptoloji arasındaki ilişkiyi kullanarak yeni güvenlik ölçütleri ve analiz metotlarının geliştirmesi​"
    • Zahir Muhammad Ziad (MSc)   2019 - "Security Problems of Chaotic Image Encryption Algorithms Based on Cryptanalysis Driven Design Architecture"
    • Yaşar Selim Bahçeci (MSc) 2020 - "Development of new algorithms for performance improvement of chaotic substitution boxes" Kaotik yer değiştirme kutularının performans iyileştirmesi için yeni algoritmaların geliştirilmesi
    • Aina'u Shehu Muhammad (Msc) 2021 - "Improvement of a robust image encryption algorithm for security ofdigital images" Sayısal görüntülerin güvenliği için gürbüz bir görüntü şifreleme algoritmasının geliştirilmesi
    • Habib Ibrahim (MSc) - 2021 "Generation of substitution box structures based on random selection and implementation of its practical applications" Rasgele seçim tabanlı yer değiştirme kutularının üretilmesi ve pratik uygulamalarının gerçekleştirmi
    • Beyzanur Durmuş (MSc) - 2022 Biometric systems based cryptological key generator design / Biyometrik sistemler temelli kriptolojik anahtar üreteç tasarımı
    • Ömer Kaya (MSc) - 2023 Cryptographic substitution box design using entropy source based onlava lamp / Lav lambası temelli entropi kaynağı kullanılarak kriptolojik ikamekutusu tasarımı



Award
  • Best paper award -  Security analysis of a chaos-based encryption technique to protect ECG packets for time critical telecardiology applications.
  • Ph.D. Thesis award - International Symposium on Digital Forensics and Security, ISDFS'15, Gazi University, Ankara
  • Listing: Who's Who in the World 2014 (31st Edition)
 
Reviewer
  • Computers and Electrical Engineering      
  • International Journal of Physical Sciences               
  • IEEE Signal Processing and Communications Applications Conference
  • Information Sciences 
  • Applied Mathematic​al Modelling 
  • Nonlinear Dynamics 
  • Security and Communication Networks 
  • Journal of Vibration and Control
  • Journal of Information Security and Applications
  • Zeitschrift für Naturforschung A 
  • Neural Computing and Applications 
  • Physics Letter A 
  • IEEE Transactions on Very Large Scale Integration Systems 
  • Cryptography and Communications - Discrete Structures, Boolean Functions and Sequences 
  • Applied Soft Computing 
  • Scientific Reports 
  • International Journal of Bifurcation and Chaos
  • Iranian Journal of Science and Technology, Transactions of Electrical Engineering 
  • Turkish Journal of Electrical Engineering & Computer Sciences 
  • IET Information Security 
  • IET Computers & Digital Techniques
  • Entropy 
  • BioSystem 
  • Information Security Journal: A Global Perspective
  • IEEE Signal Processing Letters​
  • IEEE Transactions on Industrial Informatics
  • Journal of Circuits, Systems, and Computers
  • Signal Processing: Image Communication
  • Signal, Image and Video Processing
  • Journal of the Franklin Institute
  • IEEE/CAA Journal of Automatica Sinica
  • IET Signal Processing
 
 
Membership
  • Member of International Association for Cryptologic Research (link)
  • Member of IEEE
  • Member of Hong Kong Chemical, Biological & Environmental Engineering Society (link)
  • Member of CMSIM International Chaos Modeling and Simulation (link)
 
Editorship 
  • 2020-Continue: Associate Editor, Chaos Theory and Applications (link)
  • 2013-Continue: Associate Editor, International Journal of Cryptography and Security, Bioinfo Publications (link)
  • 2015-Continue: Associate Editor, International Journal of Application or Innovation in Engineering & Management (link)
  • 2017-Continue: Associate Editor, ITM International Journal of Innovation in Science and Engineering & Management
    (link)
 
Others
  • Program Committee Member: 1st International Conference on Optics, Photonics and Lasers (OPAL' 2018), 9-11 May 2018, Barcelona, Spain (link)
  • Technical Committe Member: 2nd International Conference on Bioinformatics and Computing Technologies (ICBCT 2018). Hanoi, Vietnam, February 26-28, 2018 (link).
  • Technical Committe Member: 3rd Annual International Workshop on Wireless Communication and Network, December 8th -10th, 2017, Beijing, China (link)
  • Scientific Program Committee Member : 2nd International Conference on Computer Science and Engineering, Akdeniz University, Antalya, Turkey, 5-7 October 2017.
  • Scientific Program Committee Member : 2nd International Conference on Artificial Intelligence and Data Processing (IDAP17) Malatya, September 16-17  2017 (link)
  • Scientific Program Committee Member : 8th International Advanced Technologies Symposium (IATS’17)
  • Scientific Program Committee Member : The 5th International Symposium on Digital Forensics and Security (ISDFS 2017) Tirgu Mures, Mures, Romania, April 26-28, 2017.
  • Technical Program Committee Member : The 2nd Conference on Number Theory and Cryptography, 2016
  • Technical Program Committee Member : International Conference on Biological Engineering and Gene Technology 2015
  • Organizing Committee Member : 1st International Symposium on Digital Forensics and Security, ISDFS'13, Elazig, Turkey, 20-21 May 2013.
​
Last update: 01.01.2024