Abstract Customarily, 8× 8 S-box is a 16× 16 look up table over Galois field GF 2 8, algebra
over the binary field F 2. A 12× 12 S-box over GF 2 12 is not workable as the computer …

This paper presents a novel multiple-image encryption (MIE) technique based on mixed
image elements associated with RSA cryptosystem, fractional discrete cosine transform …

Abstract Confidentiality, integrity, authenticity, non-repudiation and storing and transmitting
images over the unsecured channel has become a challenging task nowadays. In this …

A substitution box (S-box) is the only nonlinear component of a symmetric key encryption
cipher that directly affects an encryption scheme's performance and security level. So it is …

As the systems are enabling us to transmit large chunks of data, both in the form of texts and
images, there is a need to explore algorithms which can provide a higher security without …

Typically, an 8× 8 substitution box (S-box) is a square matrix of order 16 designed over
Galois field GF (2 8) having binary field F 2 algebra. A 24 by 24 S-box over GF (2 24) is not …

In this article, we present RGB image encryption and decryption using random matrix affine
cipher (RMAC) associated with discrete Hartley transform (DHT) and random matrix shift …