In the modern block cipher, the substitution box (S-box) is a nonlinear constituent that plays
a substantial role to create the confusion in ciphertext. S-boxes with low value of differential …

Internet of Things (IoT) have offered great opportunities for the growth of smart objects in the
last decade. Smart devices are deployed in many fields such as smart cities, healthcare and …

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 …

The utilization of resource constrained computing devices such as Radio-Frequency
IDentification (RFID) tags, sensor nodes, industrial controllers and smart cards is very …

The aim of this work is to synthesize 8* 8 substitution boxes (S-boxes) for block ciphers. The
confusion creating potential of an S-box depends on its construction technique. In the first …

Substitution box is a significant and only nonlinear constituent of block cipher. S-box plays a
central role in converting the intelligible message or plain text, into an enciphered format …

In this paper, we present a new classification of 4-bit optimal S-boxes. All optimal 4-bit S-
boxes can be classified into 183 different categories, among which we specify 3 platinum …

In addition to providing hardware-dependent costly and slow solutions, statistical weakness
is an important disadvantage of a cryptographic TRNG that is tried to be removed with post …

Substitution box (S-box) is one of the most important components in the design of block
ciphers. In this work, different from traditional methods, we convert the construction of n× n S …

In general, Substitution box (S-box) is one of the components in the block cipher and plays
an important role in the process of encryption. In this paper, an improved method is …