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 …

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

Modern cryptographic systems use substitution boxes (S-boxes) throughout the encryption
process to enhance the security of the plaintext. The integrity of the communication process …

To further enhance the nonlinear and cryptographic properties of chaotic S-boxes, a novel S-
box design is proposed based on the discrete chaotic map and improved artificial bee …

Increased demand of multimedia data over heterogeneous networks has led to the
requirement for increased compression and suitable security. Both of these demands …

Block cipher has been a standout amongst the most reliable option by which data security is
accomplished. Block cipher strength against various attacks relies on substitution boxes. In …

The resistance of S-box-based cryptosystems to linear cryptanalysis is often determined by
the nonlinearity (NL) and the linear approximation probability (LAP) of the underlying S-box …

In this paper, we propose a new method for drawing a cryptographically strong substitution
box using the Lorenz system and quantum genetic algorithm techniques. We used the …

Symmetric encryption approaches are generally used for data encryption. One of the basic
requirements for symmetric encryption algorithms to provide security is strong s-box …

The construction of substitute box (S-box) has always been an important research direction
in cryptography. This paper proposes a new S-box generation method and advanced design …