Cyber security and cryptography

Published work in public-key cryptography, symmetric encryption, secure communications and cryptographic algorithm development.

1. [1]

   Assa-Agyei, K., Owa, K. & Al-Hadhrami, T. (2025)

   An efficient generation of prime numbers for RSA encryption scheme

   Springer conference proceedings, pp. 409–420

   Public-key cryptography — efficient prime generation for RSA key generation.

   DOI / link ↗
2. [2]

   Assa-Agyei, K., Owa, K. & Al-Hadhrami, T. (2025)

   Analysis and improvement of MixColumn operations in the Advanced Encryption Standard algorithm

   Springer conference proceedings, pp. 394–408

   Symmetric cryptography — analysis and improvement of AES MixColumn operations.

   DOI / link ↗
3. [3]

   Assa-Agyei, K., Owa, K., Al-Hadhrami, T., Olajide, F. & Funnimiyi, O. (2024)

   Hybrid algorithm using Rivest-Shamir-Adleman and elliptic curve cryptography for secure email communication

   International Journal of Advanced Computer Science and Applications, 15(4)

   Secure communications — hybrid RSA–ECC approach for confidential messaging.

   DOI / link ↗
4. [4]

   Assa-Agyei, K., Owa, K., Olajide, F., Funnimiyi, O. & Al-Hadhrami, T. (2024)

   A multi-chaotic key expansion for Advanced Encryption Standard (AES) algorithm

   Proceedings of the 2024 International Conference on Computing, Networking and Communications (ICNC)

   Cryptographic engineering — multi-chaotic AES key-expansion design.

   DOI / link ↗

Selected wider publications

5. [5]

   Owa, K. & Akinropo, C. (2025)

   Enhancing long- and short-term forecasting for optimised microgrid energy management through advanced hybrid deep learning models

   International Journal of Applied Science and Research, 8(1), 17–27

   DOI / link ↗
6. [6]

   Owa, K. & Omosanyin, J.T. (2025)

   Design and simulation of hybrid renewable energy system integration of microgrids using Simulink

   Global Journal of Engineering and Technology Advances, 22(1), 142–148

   DOI / link ↗
7. [7]

   Ihianle, I.K., Machado, P., Owa, K., Adama, D.A., Otuka, R. & Lotfi, A. (2024)

   Minimising redundancy, maximising relevance: HRV feature selection for stress classification

   Expert Systems with Applications, 239, 122490

   DOI / link ↗
8. [8]

   Ihianle, I.K., Nwajana, A.O., Ebenuwa, S.H., Otuka, R.I., Owa, K. & Orisatoki, M.O. (2020)

   A deep learning approach for human activity recognition from multimodal sensing devices

   IEEE Access, 8, 179028–179038

   DOI / link ↗
9. [9]

   Terry Jack, M.D.A., Khuman, S.A. & Owa, K. (2019)

   Spatio-temporal patterns act as computational mechanisms governing emergent behavior in robotic swarms

   International Journal of Swarm Intelligence and Evolutionary Computation, 8(1), 175

   DOI / link ↗
10. [10]

    Owa, K., Jackson, L. & Jackson, T. (2017)

    An intelligent novel tripartite (PSO-GA-SA) optimisation strategy

    International Journal of Metaheuristics, 6(3), 210–233

    DOI / link ↗
11. [11]

    Owa, K., Sharma, S. & Sutton, R. (2015)

    A wavelet neural network-based non-linear model predictive controller for a multi-variable coupled tank system

    International Journal of Automation and Computing, 12(2), 156–170

    DOI / link ↗
12. [12]

    Owa, K., Khan, A., Sharma, S. & Sutton, R. (2018)

    A non-minimum phase robust nonlinear neuro-wavelet predictive control strategy for a quadruple-tank process

    International Journal of Process Systems Engineering, 4(4), 207–229

    DOI / link ↗
13. [13]

    Teufl, S., Owa, K., Steinhauer, D., Castro, E., Herries, G., John, R. & Ratchev, S. (2018)

    OPTIMISED – developing a state-of-the-art system for production planning for Industry 4.0 in the construction industry

    Transdisciplinary Engineering Methods for Social Innovation of Industry 4.0, IOS Press, 756–765

    Horizon 2020 OPTIMISED consortium output