Complete classification of discrete resonant Rossby/drift wave triads on periodic domains. - Miguel D. Bustamante; Umar Hayat (Commun. Nonlinear Sci. Numer. Simul., 2013)

Efficient Construction of S-boxes Based on a Mordell Elliptic Curve Over a Finite Field. - Naveed Ahmed Azam; Umar Hayat; Ikram Ullah 002 (CoRR, 2018)

An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization. - Naveed Ahmed Azam; Umar Hayat; Ikram Ullah 002 (Secur. Commun. Networks, 2018)

Fixed Points of Automorphisms of Certain Non-Cyclic p-Groups and the Dihedral Group. - Umar Hayat; Daniel López-Aguayo; Akhtar Abbas (Symmetry, 2018)

A Method of Generating 8 × 8 Substitution Boxes Based on Elliptic Curves. - Umar Hayat; Naveed Ahmed Azam; Muhammad Asif (Wirel. Pers. Commun., 2018)

Discrete resonant Rossby/drift wave triads: Explicit parameterisations and a fast direct numerical search algorithm. - Umar Hayat; Shahid Amanullah; Shane Walsh; Mamoon Abdullah; Miguel D. Bustamante (Commun. Nonlinear Sci. Numer. Simul., 2019)

Efficient construction of a substitution box based on a Mordell elliptic curve over a finite field. - Naveed Ahmed Azam; Umar Hayat; Ikram Ullah 002 (Frontiers Inf. Technol. Electron. Eng., 2019)

A novel image encryption scheme based on an elliptic curve. - Umar Hayat; Naveed Ahmed Azam (Signal Process., 2019)

An Efficient Algorithm for Nontrivial Eigenvectors in Max-Plus Algebra. - Mubasher Umer; Umar Hayat; Fazal Abbas (Symmetry, 2019)

Comparison of Probability Distributions for Evolving Artificial Neural Networks Using Bat Algorithm. - Adeel Shahzad; Hafiz Tayyab Rauf; Tayyaba Asghar; Umar Hayat (AHFE (13), 2020)

Automated Generation of Accessible PDF. - Shaban Zulfiqar; Safa Arooj; Umar Hayat; Suleman Shahid; Asim Karim (ASSETS, 2020)

Recognition of Cursive Caption Text Using Deep Learning - A Comparative Study on Recognition Units. - Ali Mirza; Imran Siddiqi; Umar Hayat; Muhammad Atif; Syed Ghulam Mustufa (ICPRAI, 2020)

An efficient image encryption scheme based on ordered quasi-resonant Rossby/drift wave triads and Mordell elliptic curves. - Ikram Ullah 002; Umar Hayat; Miguel D. Bustamante (CoRR, 2020)

Image Encryption Using Elliptic Curves and Rossby/Drift Wave Triads. - Ikram Ullah 002; Umar Hayat; Miguel D. Bustamante (Entropy, 2020)

An Efficient Algorithm for Eigenvalue Problem of Latin Squares in a Bipartite Min-Max-Plus System. - Mubasher Umer; Umar Hayat; Fazal Abbas; Anurag Agarwal; Petko Kitanov (Symmetry, 2020)

Efficient and secure substitution box and random number generators over Mordell elliptic curves. - Ikram Ullah 002; Naveed Ahmed Azam; Umar Hayat (J. Inf. Secur. Appl., 2021)

A substitution box generator, its analysis, and applications in image encryption. - Naveed Ahmed Azam; Umar Hayat; Maria Ayub (Signal Process., 2021)

A Novel Image Encryption Scheme Based on Elliptic Curves over Finite Rings. - Umar Hayat; Ikram Ullah 002; Naveed Ahmed Azam; Sumaira Azhar (Entropy, 2022)

Trivial and Nontrivial Eigenvectors for Latin Squares in Max-Plus Algebra. - Fazal Abbas; Mubasher Umer; Umar Hayat; Ikram Ullah 002 (Symmetry, 2022)

Machine Learning Based Classification of crystal system using rendered images from X-ray diffraction (XRD) dataset. - Ali Hamza; Umar Hayat; Wahid Hussain; Anam Mumtaz (ICAI, 2023)

A Novel Pseudo-Random Number Generator Based on Multi-Objective Optimization for Image-Cryptographic Applications. - Takreem Haider; Saúl A. Blanco; Umar Hayat (CoRR, 2023)

Towards provably secure asymmetric image encryption schemes. - Naveed Ahmed Azam; Jianshen Zhu; Umar Hayat; Aleksandar Shurbevski (Inf. Sci., 2023)

A novel deterministic substitution box generator over elliptic curves for real-time applications. - Mohammad Abdul Mujeeb Khan; Naveed Ahmed Azam; Umar Hayat; Hailiza Kamarulhaili (J. King Saud Univ. Comput. Inf. Sci., 2023)

Substitution box generator with enhanced cryptographic properties and minimal computation time. - Takreem Haider; Naveed Ahmed Azam; Umar Hayat (Expert Syst. Appl., 2024)

A novel pseudo-random number generator based on multivariable optimization for image-cryptographic applications. - Takreem Haider; Saúl A. Blanco; Umar Hayat (Expert Syst. Appl., 2024)

An optimized watermarking scheme based on genetic algorithm and elliptic curve. - Naveed Ahmed Azam; Takreem Haider; Umar Hayat (Swarm Evol. Comput., 2024)

Efficient image encryption algorithm based on ECC and dynamic S-box. - Ghulam Murtaza; Umar Hayat (J. Inf. Secur. Appl., 2025)

An Efficient S-Box Generation With Mutation Optimization for Secure Image Encryption. - Aqeel Ejaz; Ghulam Murtaza; Takreem Haider; Naveed Ahmed Azam; Umar Hayat (Secur. Priv., 2025)