In recent years, a large amount of work on chaos-based cryptosystems have been
published. However, many of the proposed schemes fail to explain or do not possess a …

In the last few years, with the increasing popularity of cloud computing and the availability of
mobile smart devices as well as ubiquitous network connections, more and more users are …

Image encryption is a straightforward strategy to protect digital images by transforming
images into unrecognized ones. The chaos theory is a widely used technology for image …

Reversible data hiding in encrypted images (RDHEI) is an effective technique to embed data
in the encrypted domain. An original image is encrypted with a secret key and during or after …

Privacy preservation has become a prerequisite for modern applications in the cloud, social
media, Internet of things (IoT), and E-healthcare systems. In general, health and medical …

In this paper, a new and efficient pixel-level image encryption algorithm is presented. In
contrast to the traditional permutation–diffusion architecture, the proposed method enhances …

In this paper, a hybrid elementary cellular automata (HECA) composed of two chaotic global
rules is designed to enhance the chaotic properties of the pseudo-random coupled map …

Chaotic dynamics is widely used to design pseudo-random number generators and for other
applications, such as secure communications and encryption. This paper aims to study the …

When applied to practical applications, existing chaotic systems exhibit many weaknesses,
including discontinuous chaotic intervals and easily predicted chaotic signals. This study …

Traditionally, chaotic systems are built on the domain of infinite precision in mathematics.
However, the quantization is inevitable for any digital devices, which causes dynamical …