scholarly journals Instructions New Technology of Color Image Encryption Based Two Improved Vigenere Laps Separated by a Genetic Mutation

2021 ◽  
Vol 11 (5) ◽  
pp. 605-613
Author(s):  
Mohamed Jarjar ◽  
Said Hraoui ◽  
Said Najah ◽  
Khalid Zenkouar
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
New Technology ◽  
Chaotic Map ◽  
Genetic Mutation ◽  
Future Application ◽  
Genetic Mutations ◽  
Color Image Encryption ◽  
Output Vector ◽  
Classical Technique

This document traces the development of a new cryptosystem using two circuits ensured by a deep Vigenere classical technique improvement. This new technique employs several dynamic substitutions matrices attached to chaotic replacement functions; whose construction will be detailed. The first round will start by modifying the seed pixels based on the initial values calculated from the original image, and will be infected through the chaotic map used to overcome the uniform image problem, followed by the injection of Vigenere technology improvements. The output vector will be subdivided into three sized blocks for future application of deeply improved genetic mutations to better adapt to medicine and color image encryption. The second round will increase the complexity of the attack and improve the installed systems. Simulations performed on a large number of images of different sizes and formats ensure that our approach is not exposed to known attacks.

scholarly journals Connection of Two Conventional Enhanced to Encrypt Color Images

2021 ◽  
Author(s):  
Said Hraoui ◽  
Abdellatif JarJar
Keyword(s):  
Color Image ◽  
Chaotic Map ◽  
Color Images ◽  
Encryption Algorithm ◽  
Translation Vector ◽  
Kronecker Products ◽  
Color Image Encryption ◽  
Differential Attack ◽  
Output Vector ◽  
Image Encryption Algorithm

This document introduces a new cryptosystem mixing two improvement standards generally used for text encryption, in order to give birth a new color image encryption algorithm capable of dealing with known attacks. Firstly, two substitution matrixes attached to a strong replacement function will be generated for advanced Vigenere technique application. At the end of this first round, the output vector is subdivided into size blocks according to the used chaotic map, for acting a single enhanced Hill circuit insured by a large inversible matrix. A detailed description of such a large involutive matrix constructed using Kronecker products will be given. accompanied by a dynamic translation vector to eliminate any linearity. A solid chaining is established between the encrypted block and the next clear block to avoid any differential attack. Simulations carried out on a large volume of images of different sizes and formats ensure that our approach is not exposed to any known attacks.

scholarly journals FPGA implementation of color image encryption using a new chaotic map

2019 ◽  
Vol 13 (1) ◽  
pp. 129 ◽  
Author(s):  
Hamsa A Abdullah ◽  
Hikmat N Abdullah
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Chaotic Map ◽  
Security Analysis ◽  
Fpga Implementation ◽  
Complete Analysis ◽  
Second Phase ◽  
Color Image Encryption ◽  
Typical Application ◽  
Simulation Results

<p>In this paper, an FPGA implementation of efficient image encryption algorithm using a chaotic map has been proposed. The proposed system consists of two phases image encryption technique. First phase consists of scrambling of pixel position and second phase consist of diffusion of bit value. In the first phase, original pixel values remain unchanged. In second phase, pixel values are modified. These modifications are done by using chaotic behavior of a recently developed chaotic map called Nahrain.  A color image encryption using Nahrain chaotic map is simulated in software via Matlab, Altera Quartus Prime 17.0 Lite EditionI and ModelSim software tools then implemented in hardware via Cyclone V GX Starter Kit FPGA platform. The results show the feasibility and effectiveness of the cryptosystem. As a typical application, the image encryption/decryption is used to demonstrate and verify the operation of the cryptosystem hardware. Complete analysis on robustness of the method is investigated. Correlation, Encryption time, Decryption time and key sensitivity show that the proposed crypto processor offers high security and reliable encryption speed for real-time image encryption and transmission.  To evaluate the performance, histogram, correlation, information entropy, number of pixel change rate (NPCR), and unified average changing intensity (UACI) measures are used for security analysis. The simulation results and security analysis have demonstrated that the proposed encryption system is robust and flexible. For example the amount of entropy obtained by the proposed algorithm is 7.9964, which is very close to its ideal amount: 8, and NPCR is 99.76 %, which is the excellent value to obtain. The hardware simulation results show that the number of pins that used of the proposed system reaches to 6% of total pins and Logic utilization (in ALMs) is 1%.</p>

scholarly journals Vigenere Followed by Multiple Bit-Level Permutations to Encrypt a Color Image

2021 ◽  
Author(s):  
Abdellatif Jarjar
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
New Technology ◽  
Central Element ◽  
The Other ◽  
Color Image Encryption ◽  
Pixel Value ◽  
The Subject ◽  
Encryption Algorithms

The largest part of the image encryption algorithms operates on the pixel as a central element by implementing diffusion confusion and eventually a permutation. On the other side, a permutation applied at the bit level changes not only the pixel value, but also its location within the image. In this work, we will propose a new technology of medical and color image encryption, based on chaotic permutations acting at the bit level, and a diffusion confusion ensured by an application of the method of Vigenere largely improved and adapted to the subject. Simulations performed on a large number of images of different sizes and formats ensure that our method is not subject to any known attacks.

scholarly journals Cryptanalysis of a New Color Image Encryption Using Combination of the 1D Chaotic Map

2020 ◽  
Vol 10 (6) ◽  
pp. 2187
Author(s):  
Yuqiang Dou ◽  
Ming Li
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Chaotic Map ◽  
Original Method ◽  
Encryption Algorithm ◽  
One Dimension ◽  
Color Image Encryption ◽  
Chosen Plaintext Attack ◽  
Image Communication ◽  
Image Encryption Algorithm

Security of image communication is more and more important in many applications such as the transmission of military and medical images. To meet the requirement, a new color image encryption algorithm using a new one-dimension (1D) chaotic map was proposed recently, which can resist various attacks because the range of the new chaotic map is larger than that of the previous ones. In our study, the security of the new original method is analyzed and a novel attack method is proposed. It is demonstrated that the scheme is not secure under chosen-plaintext attack, by which the encrypted image can be successfully converted into the corresponding plaintext image without any error.

scholarly journals A Novel Color Image Encryption Algorithm Based on Hyperchaotic Maps and Mitochondrial DNA Sequences

Entropy ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 158
Author(s):  
Heba G. Mohamed ◽  
Dalia H. ElKamchouchi ◽  
Karim H. Moussa
Keyword(s):  
Image Encryption ◽  
Dna Sequences ◽  
Color Image ◽  
Chaotic Map ◽  
Color Image Encryption ◽  
Plain Text ◽  
Differential Attacks ◽  
Image Encryption Algorithm ◽  
Multimedia Encryption ◽  
Human Mitochondrial Genome

Multimedia encryption innovation is one of the primary ways of securely and privately guaranteeing the security of media transmission. There are many advantages when utilizing the attributes of chaos, for example, arbitrariness, consistency, ergodicity, and initial condition affectability, for any covert multimedia transmission. Additionally, many more benefits can be introduced with the exceptional space compliance, unique information, and processing capability of real mitochondrial deoxyribonucleic acid (mtDNA). In this article, color image encryption employs a confusion process based on a hybrid chaotic map, first to split each channel of color images into n-clusters; then to create global shuffling over the whole image; and finally, to apply intrapixel shuffling in each cluster, which results in very disordered pixels in the encrypted image. Then, it utilizes the rationale of human mitochondrial genome mtDNA to diffuse the previously confused pixel values. Hypothetical examination and trial results demonstrate that the anticipated scheme exhibits outstanding encryption, as well as successfully opposes chosen/known plain text, statistical, and differential attacks.

Sign in / Sign up

Export Citation Format

Share Document