In modern-day block ciphers, the role of substitution-boxes is to transform the plaintext data
nonlinearly to generate ciphertext data with sufficient confusion. It has been well-confirmed …

A symmetric block cipher employing a substitution–permutation duo is an effective technique
for the provision of information security. For substitution, modern block ciphers use one or …

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

Cryptography is commonly used to secure communication and data transmission over
insecure networks through the use of cryptosystems. A cryptosystem is a set of cryptographic …

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 …

This work reports a novel chaos-based affine transformation generation method, which is
based on rotational matrices to design strong key-based S-boxes. Chaotic logistic map's …

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 …

AES (Advanced Encryption Algorithm) is a block cipher, which is world wide implemented for
encryption of data. It has been accepted as a standard for data security since 2001. AES is a …

Blowfish algorithm (BA) is a symmetric block cipher with a 64-bit block size and variable key
lengths from 32 bits up to a maximum of 448 bits. In order to measure the degree of security …