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 …

Cryptography based on chaos theory has developed fast in the past few years, but most of
the researches focus on secret key cryptography. There are few public key encryption …