Due to the limitations of symmetric-key techniques, authentication and key agreement (AKA)
protocols based on public-key techniques have attracted much attention, providing secure …

In recent years, a variety of chaos-based digital image encryption algorithms have been
suggested. Most of these algorithms implement permutations and diffusions at the pixel level …

In recent years, the Internet of Things (IoT) has gained increasing popularity due to the
usage of Internet-enabled devices. However, Internet-enabled devices, also known as smart …

Spread of wireless network technology has opened new doors to utilize sensor technology
in various areas via Wireless Sensor Networks (WSNs). Many authentication protocols for …

This paper proposes a novel image encryption scheme based on rotation matrix bit-level
permutation and block diffusion. Firstly, divide plain image into non-overlapping 8× 8 pixels …

The substitution box (S-box) is an important component in block encryption algorithms. In
this Letter, the problem of constructing S-box is transformed to a Traveling Salesman …

In this paper, we design a novel discrete fractional random transform based on 2D chaotic
logistic maps and two chaotic random masks resulting from Chirikov standard map. Then, a …

Advancement in network technology provides new ways to utilize telecare medicine
information systems (TMIS) for patient care. Although TMIS usually faces various attacks as …

In smart grid, key exchange protocols play a vital role in providing secure channels to read
consumption reports from the smart meters. Thus far, several key exchange schemes have …

Everyone desires to avail online services provided by different service providers securely,
efficiently, and effectively. In this regard, security is still a significant concern for them …