Umar Hayat

32 papers A 1Journal 27Unranked 4
YearRankTypeTitle / Venue / Authors
2026 J jnl
EIP: Efficient image protection scheme.
J. Inf. Secur. Appl.
Takreem Haider, Kanza Abdul Sattar, Nikos Komninos, Umar Hayat
2026 J jnl
Efficient and Secure Montgomery Curve Based Substitution Box Generator With Optimal Nonlinearity.
Secur. Priv.
Ikram Ullah, Shahzaib Arif, Fazal Abbas, Umar Hayat
2025 J jnl
An Efficient S-Box Generation With Mutation Optimization for Secure Image Encryption.
Secur. Priv.
Aqeel Ejaz, Ghulam Murtaza, Takreem Haider, Naveed Ahmed Azam, Umar Hayat
2025 J jnl
Efficient image encryption algorithm based on ECC and dynamic S-box.
J. Inf. Secur. Appl.
Ghulam Murtaza, Umar Hayat
2024 J jnl
A novel pseudo-random number generator based on multivariable optimization for image-cryptographic applications.
Expert Syst. Appl.
Takreem Haider, Saúl A. Blanco, Umar Hayat
2024 J jnl
An optimized watermarking scheme based on genetic algorithm and elliptic curve.
Swarm Evol. Comput.
Naveed Ahmed Azam, Takreem Haider, Umar Hayat
2024 J jnl
Substitution box generator with enhanced cryptographic properties and minimal computation time.
Expert Syst. Appl.
Takreem Haider, Naveed Ahmed Azam, Umar Hayat
2023 J jnl
A Novel Pseudo-Random Number Generator Based on Multi-Objective Optimization for Image-Cryptographic Applications.
CoRR
Takreem Haider, Saúl A. Blanco, Umar Hayat
2023 J jnl
A novel deterministic substitution box generator over elliptic curves for real-time applications.
J. King Saud Univ. Comput. Inf. Sci.
Mohammad Abdul Mujeeb Khan, Naveed Ahmed Azam, Umar Hayat, Hailiza Kamarulhaili
2023 — conf
Machine Learning Based Classification of crystal system using rendered images from X-ray diffraction (XRD) dataset.
ICAI
Ali Hamza, Umar Hayat, Wahid Hussain, Anam Mumtaz
2023 J jnl
Towards provably secure asymmetric image encryption schemes.
Inf. Sci.
Naveed Ahmed Azam, Jianshen Zhu, Umar Hayat, Aleksandar Shurbevski
2022 J jnl
A Novel Image Encryption Scheme Based on Elliptic Curves over Finite Rings.
Entropy
Umar Hayat, Ikram Ullah, Naveed Ahmed Azam, Sumaira Azhar
2022 — conf
Developing Realistic Distributed Denial of Service (DDoS) Dataset for Machine Learning-based Intrusion Detection System.
IOTSMS
Hassan Jalil Hadi, Umar Hayat, Numan Musthaq, Faisal Bashir Hussain, Yue Cao
2022 J jnl
Trivial and Nontrivial Eigenvectors for Latin Squares in Max-Plus Algebra.
Symmetry
Fazal Abbas, Mubasher Umer, Umar Hayat, Ikram Ullah
2021 J jnl
A substitution box generator, its analysis, and applications in image encryption.
Signal Process.
Naveed Ahmed Azam, Umar Hayat, Maria Ayub
2021 J jnl
Efficient and secure substitution box and random number generators over Mordell elliptic curves.
J. Inf. Secur. Appl.
Ikram Ullah, Naveed Ahmed Azam, Umar Hayat
2020 J jnl
An Efficient Algorithm for Eigenvalue Problem of Latin Squares in a Bipartite Min-Max-Plus System.
Symmetry
Mubasher Umer, Umar Hayat, Fazal Abbas, Anurag Agarwal, Petko Kitanov
2020 J jnl
An efficient image encryption scheme based on ordered quasi-resonant Rossby/drift wave triads and Mordell elliptic curves.
CoRR
Ikram Ullah, Umar Hayat, Miguel D. Bustamante
2020 A conf
Automated Generation of Accessible PDF.
ASSETS
Shaban Zulfiqar, Safa Arooj, Umar Hayat, Suleman Shahid, Asim Karim
2020 — conf
Comparison of Probability Distributions for Evolving Artificial Neural Networks Using Bat Algorithm.
AHFE (13)
Adeel Shahzad, Hafiz Tayyab Rauf, Tayyaba Asghar, Umar Hayat
2020 J jnl
Image Encryption Using Elliptic Curves and Rossby/Drift Wave Triads.
Entropy
Ikram Ullah, Umar Hayat, Miguel D. Bustamante
2020 — conf
Recognition of Cursive Caption Text Using Deep Learning - A Comparative Study on Recognition Units.
ICPRAI
Ali Mirza, Imran Siddiqi, Umar Hayat, Muhammad Atif, Syed Ghulam Mustufa
2019 J jnl
A novel image encryption scheme based on an elliptic curve.
Signal Process.
Umar Hayat, Naveed Ahmed Azam
2019 J jnl
An Efficient Algorithm for Nontrivial Eigenvectors in Max-Plus Algebra.
Symmetry
Mubasher Umer, Umar Hayat, Fazal Abbas
2019 J jnl
Discrete resonant Rossby/drift wave triads: Explicit parameterisations and a fast direct numerical search algorithm.
Commun. Nonlinear Sci. Numer. Simul.
Umar Hayat, Shahid Amanullah, Shane Walsh, Mamoon Abdullah, Miguel D. Bustamante
2019 J jnl
Efficient and Secure Substitution Box and Random Number Generators Over Mordell Elliptic Curves.
CoRR
Ikram Ullah, Naveed Ahmed Azam, Umar Hayat
2019 J jnl
Efficient construction of a substitution box based on a Mordell elliptic curve over a finite field.
Frontiers Inf. Technol. Electron. Eng.
Naveed Ahmed Azam, Umar Hayat, Ikram Ullah
2018 J jnl
A Method of Generating 8 × 8 Substitution Boxes Based on Elliptic Curves.
Wirel. Pers. Commun.
Umar Hayat, Naveed Ahmed Azam, Muhammad Asif
2018 J jnl
An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization.
Secur. Commun. Networks
Naveed Ahmed Azam, Umar Hayat, Ikram Ullah
2018 J jnl
Efficient Construction of S-boxes Based on a Mordell Elliptic Curve Over a Finite Field.
CoRR
Naveed Ahmed Azam, Umar Hayat, Ikram Ullah
2018 J jnl
Fixed Points of Automorphisms of Certain Non-Cyclic
Symmetry
Umar Hayat, Daniel López-Aguayo, Akhtar Abbas
2013 J jnl
Complete classification of discrete resonant Rossby/drift wave triads on periodic domains.
Commun. Nonlinear Sci. Numer. Simul.
Miguel D. Bustamante, Umar Hayat