A substitution box (S-box) is the only non-linear component in many cryptosystems.
Recently, S-box generators have been used intensively in many modern cryptosystems to …

Protection of data transmitted over the network from illegal access is one of the major
challenges being posed by exponential growth of data in online digital communication …

In this article, we present an encryption technique that can encrypt any digital data. The
proposed scheme basically depends on a substitution-permutation network. Two separate …

For decades, the security and privacy of data are among the major challenges faced by
service providers dealing with public data. To cope with these challenges, most of the …

Due to the extensive demand for digital images across all fields, the security of multimedia
data over insecure networks is a challenging task. The majority of the existing modern …

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 …

Substitution box is the most significant component of block cipher. The property of
nonlinearity is of great importance for the design of secure substitution boxes. Therefore, it is …

The security strengths of block ciphers greatly rely on the confusion components which have
the tendency to transform the data nonlinearly into the perplexed form. This paper proposes …

Data encryption with substitution-box (S-box) is now widely regarded as the most secure
method of communicating in order to prevent unauthorized access to sensitive and …

New era ciphers employ substitution boxes (S-boxes) which assist in the provision of
security for the plaintext in the encryption phase and transforming the ciphertext on the …