Umar Hayat

According to our database, Umar Hayat authored at least 22 papers between 2013 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

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., January, 2023

Towards provably secure asymmetric image encryption schemes.

Naveed Ahmed Azam, Jianshen Zhu, Umar Hayat, Aleksandar Shurbevski

Inf. Sci., 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

2022

Trivial and Nontrivial Eigenvectors for Latin Squares in Max-Plus Algebra.

Fazal Abbas, Mubasher Umer, Umar Hayat, Ikram Ullah

Symmetry, 2022

A Novel Image Encryption Scheme Based on Elliptic Curves over Finite Rings.

Umar Hayat, Ikram Ullah, Naveed Ahmed Azam, Sumaira Azhar

Entropy, 2022

2021

A substitution box generator, its analysis, and applications in image encryption.

Naveed Ahmed Azam, Umar Hayat, Maria Ayub

Signal Process., 2021

Efficient and secure substitution box and random number generators over Mordell elliptic curves.

Ikram Ullah, Naveed Ahmed Azam, Umar Hayat

J. Inf. Secur. Appl., 2021

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

Image Encryption Using Elliptic Curves and Rossby/Drift Wave Triads.

Ikram Ullah, Umar Hayat, Miguel D. Bustamante

Entropy, 2020

An efficient image encryption scheme based on ordered quasi-resonant Rossby/drift wave triads and Mordell elliptic curves.

Ikram Ullah, Umar Hayat, Miguel D. Bustamante

CoRR, 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

Proceedings of the Pattern Recognition and Artificial Intelligence, 2020

Automated Generation of Accessible PDF.

Shaban Zulfiqar, Safa Arooj, Umar Hayat, Suleman Shahid, Asim Karim

Proceedings of the ASSETS '20: The 22nd International ACM SIGACCESS Conference on Computers and Accessibility, 2020

Comparison of Probability Distributions for Evolving Artificial Neural Networks Using Bat Algorithm.

Adeel Shahzad, Hafiz Tayyab Rauf, Tayyaba Asghar, Umar Hayat

Proceedings of the Advances in Artificial Intelligence, Software and Systems Engineering, 2020

2019

An Efficient Algorithm for Nontrivial Eigenvectors in Max-Plus Algebra.

Mubasher Umer, Umar Hayat, Fazal Abbas

Symmetry, 2019

A novel image encryption scheme based on an elliptic curve.

Umar Hayat, Naveed Ahmed Azam

Signal Process., 2019

Efficient construction of a substitution box based on a Mordell elliptic curve over a finite field.

Naveed Ahmed Azam, Umar Hayat, Ikram Ullah

Frontiers Inf. Technol. Electron. Eng., 2019

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

2018

A Method of Generating 8 × 8 Substitution Boxes Based on Elliptic Curves.

Umar Hayat, Naveed Ahmed Azam, Muhammad Asif

Wirel. Pers. Commun., 2018

Fixed Points of Automorphisms of Certain Non-Cyclic <i>p</i>-Groups and the Dihedral Group.

Umar Hayat, Daniel López-Aguayo, Akhtar Abbas

Symmetry, 2018

An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization.

Naveed Ahmed Azam, Umar Hayat, Ikram Ullah

Secur. Commun. Networks, 2018

Efficient Construction of S-boxes Based on a Mordell Elliptic Curve Over a Finite Field.

Naveed Ahmed Azam, Umar Hayat, Ikram Ullah

CoRR, 2018

2013

Complete classification of discrete resonant Rossby/drift wave triads on periodic domains.

Miguel D. Bustamante, Umar Hayat

Commun. Nonlinear Sci. Numer. Simul., 2013