With the widespread use of digital devices and the internet, implementing advanced security
systems is essential to protect confidential information from cyberattacks and unauthorized …

Over the past few years, there has been a rise in the utilization of chaotic encryption
algorithms for securing images. The majority of chaos-based encryption algorithms adhere …

In a rapidly advancing world of technology, information security studies have become the
backbone of the digital age, and steps in this area are critical. In this context, cryptography …

Substitution boxes are the key factor in symmetric-key cryptosystems that determines their
ability to resist various cryptanalytic attacks. Creating strong substitution boxes that have …

Due to privacy and sensitivity of the medical images, the creation of strong medical image
encryption schemes has gained the attention of cryptographers. In this study, a robust …

Thumbnail-preserving encryption (TPE) can balance the usability and the privacy of images
in the cloud. Most ideal TPE schemes obtain thumbnails by dividing the plaintext image into …

With the advent of communication networks, protecting data from security threats has
become increasingly important. To address this issue, we present a new text encryption …

While using the internet, sending confidential emails, or dealing with financial information
that affects many aspects of our everyday life, security is one of the most important …

Due to its amplification effect on the deviation of the initial value, chaotic systems have been
closely integrated with image encryption in the past few years, which inspires the research of …

In this study, a novel robust design methodology that successfully meets the performance
and security criteria for substitution-boxes (s-boxes), critical component in block cipher …