Results 11 to 20 of about 2,345 (277)

Enhanced security of affine ciphers using digraph transformation and a modified three pass protocol [PDF]

Scientific Reports
Ensuring secure data transmission over public channels remains a fundamental challenge in modern communication systems. Cryptography, through encryption and decryption processes, is vital for protecting sensitive information from unauthorized access ...
Seble Bete, Samuel Asferaw Demilew, Tefera Alagaw Woldegiworgis, Getaneh Geto Tsegaye, Dagne Walle Girmaw   +4 more
doaj   +2 more sources

Cryptographic protection of RGB images using SPN over Eisenstein integer ring modulo Eisenstein prime [PDF]

Scientific Reports
This research introduces a fortified cryptographic paradigm for safeguarding RGB image data, founded upon a substitution–permutation network (SPN) architecture defined over the residue class rings of Eisenstein integers modulo a selected prime element ...
Muhammad Sajjad, Mushtaq K. Abdalrahem, Ebrahim E. Elsayed, Moin-ud-Din Junjua, Salman A. AlQahtani   +4 more
doaj   +2 more sources

A novel color images security-based on SPN over the residue classes of quaternion integers $$\:\varvec{H}{\left(\mathbb{Z}\right)}_{\varvec{\pi\:}}$$ [PDF]

Scientific Reports
The exponential growth of multimedia data transmission has intensified the demand for advanced image encryption systems capable of resisting contemporary cryptanalytic attacks while maintaining computational efficiency.
Muhammad Sajjad, Nawaf A. Alqwaifly
doaj   +2 more sources

A Simple Image Encryption Based on Binary Image Affine Transformation and Zigzag Process

Complexity, 2022
In this paper, we propose a new and simple method for image encryption. It uses an external secret key of 128 bits long and an internal secret key. The novelties of the proposed encryption process are the methods used to extract an internal key to apply ...
Adélaïde Nicole Kengnou Telem, Cyrille Feudjio, Balamurali Ramakrishnan, Hilaire Bertrand Fotsin, Karthikeyan Rajagopal   +4 more
doaj   +2 more sources

Multiple color images security by SPN over the residue classes of Gaussian integer $$\:Z{\left[i\right]}_{h}$$ [PDF]

Scientific Reports
In this paper, the authors present the design of a new pair of 8 × 8 S-boxes over the residue classes of Gaussian integers $$\:Z{\left[i\right]}_{h}$$ and their usage for the encryption of multiple RGB images using a three-stage Substitution-Permutation ...
Muhammad Sajjad, Tariq Shah, Rafik Hamza, Bander Almutairi, Robinson Julian Serna   +4 more
doaj   +2 more sources

RGB image encryption using SPN with a novel block cipher over simple graph adjacency matrices and Galois fields [PDF]

Scientific Reports
This paper presents a construction of a secure image encryption scheme with graph theory, Galois field, and substitution-permutation network (SPN) for enhanced multimedia data security.
Muhammad Sajjad, Nawaf A. Alqwaifly
doaj   +2 more sources

Self-adaptive encryption algorithm for image based on affine and composed chaos [PDF]

Tongxin xuebao, 2012
On the basis of three-dimensional affine transformation in limited integer domain and composed chaos,a novel digital image encryption algorithm was proposed.Firstly,it scrambled pixels’ position and confused pixels’ value according to corresponding ...
Chang-ci WEN, Qin WANG, Fu-min HUANG, Zhi-shu YUAN, Chun-sheng TAO   +4 more
doaj   +4 more sources

Tilings from some non-irreducible, Pisot substitutions [PDF]

Discrete Mathematics & Theoretical Computer Science, 2005
A generating method of self-affine tilings for Pisot, unimodular, irreducible substitutions, as well as the fact that the associated substitution dynamical systems are isomorphic to rotations on the torus are established in P. Arnoux and S. Ito.
Shunji Ito, Hiromi Ei
doaj   +3 more sources

Design and Implementation of Advanced Encryption Standard by New Substitution Box in Galois Field (𝟐𝟖) [PDF]

International Journal of Telecommunications, 2022
An inverse multiplexing method for irreducible polynomials is presented in this paper based on the theory of substitution boxes. The method is based on the theory of substitution boxes.
Ashraf Mohra, Abdelkader Ismail, Ayman Abdelaziem, Ayman Hassan, Wageda Alsobky   +4 more
doaj   +1 more source

Error correction by Reed–Solomon codes using its automorphisms

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2021
The article explores the syndrome invariants of АГ-group of automorphisms of Reed–Solomon codes (RS-codes) that are a joint group of affine and cyclic permutations. The found real invariants are a set of norms of N Г-orbits that make up one or another АГ-
V. A. Lipnitsky, S. I. Semyonov
doaj   +1 more source