S-boxes are used in block ciphers as the important nonlinear components. The nonlinearity
provides important protection against linear and differential cryptanalysis. The S-boxes used …

Substitution box (S-box) is one of the most important structures used for byte change
operation in block encryption algorithms. An S-box structure with strong cryptological …

The role of substitution boxes is very important in block ciphers. Substitution boxes are
utilized to create confusion in the cryptosystem. However, to create both confusion and …

Substitution box (S‐box) is a vital nonlinear component for the security of cryptographic
schemes. In this paper, a new technique which involves coset diagrams for the action of a …

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 this paper, we propose to present a novel technique for designing cryptographically
strong substitution-boxes using cubic polynomial mapping. The proposed cubic polynomial …

Due to less computational effort with strong security, Elliptic curve based cryptographic
architectures are more reliable as compared to the existing cryptographic methods. In this …

In this paper, we present a matrix approach based on the rule 90 cellular automata, and a
fractional linear transformation over Galois field GF (2^ 8) GF (2 8), to implement a strong …

The widespread use of the Internet for transmission of data demands the well-defined data
protection algorithms. Symmetric block cipher protects the digital information from the un …

A nonlinear substitution operation of bytes is the main strength factor of the Advanced
Encryption Standard (AES) and other modern cipher systems. In this paper we have …