This paper targets to search so-called good generators by doing a brief survey over the
generators developed in the history of pseudo-random number generators (PRNGs), verify …

This paper proposes an image encryption scheme based on Cellular Automata (CA). CA is a
self-organizing structure with a set of cells in which each cell is updated by certain rules that …

Cryptography and steganography are usual methods for safe transfer of information, which
encryption algorithms turn original images into unreadable noise-like images. This paper …

In this paper, we propose a hyperchaotic image encryption system based on particle swarm
optimization algorithm (PSO) and cellular automata (CA). Firstly, to improve the ability to …

Security is a key factor in today's fast communicating world. Many cryptographic algorithms
are tested and put into use efficiently. Random numbers are used in diverse forms like …

The acceleration in developments in communication technology has led to a consequent
increase in the vulnerability of data due to penetration attacks. These attacks often came …

This paper presents a multi-objective optimization method for designing cogeneration
systems in residential complexes and accounting for the involved uncertainty. The model …

In this report, we demonstrate the pros and cons of Diffie–Hellman key exchange algorithm
that is commonly used for the exchange of keys in private-key cryptosystem. A very …

The data in the blockchain cannot be tampered with and the users are anonymous, which
enables the blockchain to be a natural carrier for covert communication. However, the …

In this dissertation, we study two of the global properties of 1-dimensional cellular automata
(CAs) under periodic boundary condition, namely, reversibility and randomness. To address …