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 …

One of the first and most used hashing algorithms in blockchains is SHA-256 so the main
aim of this paper is how to increase the security level of the blockchain based on the …

Image encryption is essential for ensuring data transmission security over open public
networks. Using Multi-Wavelet Transform, Arnold transform, and two chaotic systems, a …

Block ciphers are widely used for securing data and are known for their resistance to various
types of attacks. The strength of a block cipher against these attacks often depends on the S …

ABSTRACT S‐box strengthens the encryption and decryption process by introducing
nonlinearity and protecting the encrypted data against various differential and linear …

The fusion of chaos theory and cryptography has yielded a dynamic landscape of innovative
solutions for safe random key generation. This paper presents a comparison of several …

Substitution boxes (s-boxes) providing the nonlinearity property are fundamental
components of modern encryption systems. The security of these systems directly depends …

This research presents a survey of application of hyperchaotic map on encryption of color
images. There are various researches that have introduced this application. Among these …

This paper introduces the process of digital signatures and their importance in smart
contracts. There are a lot of digital signature algorithms. Some of these algorithms, such as …

In the era of digital communication, ensuring the security of transmitted images is
paramount, particularly for online and real-time applications where data privacy and integrity …