Background and Aim: due to the rapid growth of data communication and multimedia system
applications, security becomes a critical issue in the communication and storage of images …

This paper proposes a new hybrid chaotic map and a different way of using optimization
technique to improve the performance of encryption algorithms. Compared to other chaotic …

Since a substitution box (S-box) is the nonlinearity part of a symmetric key encryption
scheme, it directly determines the performance and security level of the encryption scheme …

Abstract Substitution Box (S-Box) is one of the most significant structures used to create an
encryption which is strong and resistant against attacks in block encryption algorithms. S …

Substitution box (S-box) is one of the most important components in the design of block
ciphers. In this work, different from traditional methods, we convert the construction of n× n S …

In the Internet of Things (IoT), a lot of constrained devices are interconnected. The data
collected from those devices can be the target of cyberattacks. In this paper, a lightweight …

A new method for obtaining random bijective S-boxes based on discrete chaotic map is
presented. The proposed method uses a discrete chaotic map based on the composition of …

In this work, we present a simple algorithm to design n× n‐bits substitution boxes (S‐boxes)
based on chaotic time series of the logistic map for different carrying capacities. The use of …

One-dimensional (1-D) chaotic maps have been considered as prominent pseudo-random
source for the design of different cryptographic primitives. They have the advantages of …

The healthcare industry is being transformed by the Internet of Things (IoT), as it provides
wide connectivity among physicians, medical devices, clinical and nursing staff, and patients …