Wassim Alexan

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Verified

Wassim verified their affiliation via an institutional email.

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• PhD in Communications Engineering
• Professor (Associate) at German University in Cairo

With the rapid growth of multimedia communication, protecting image data has become increasingly critical. This article proposes a novel 3‐stage hyperchaos‐based augmented image encryption technique (3SHAIET) that utilizes a three‐stage process with chaotic systems of increasing dimensionality (e.g., six‐dimensional [6D], 8D, and 9D) to enhance sec...

This study proposes a fast image encryption method for color images, integrating an autoencoder to compress the image and a 6D hyperchaotic system to ensure enhanced security. Initially, a hash value is obtained from the original color image. The hash value, which serves as the secret key of the proposed encryption method, is used to initialize the...

This study presents a sophisticated encryption methodology specifically designed for the secure transfer of medical images across cloud services. The initial phase of the algorithm involves the consolidation of multiple images to form a single augmented image, which is then subjected to the first layer of encryption. This layer employs an encryptio...

This article presents a novel augmented image encryption algorithm tailored for securing satellite images, addressing the critical need for robust protection of sensitive geographic data. Implementing Shannon’s principles of confusion and diffusion, the method begins by augmenting multiple plain images into a single large image, followed by a three...

This study presents an encryption algorithm for picture cubes that is based on complex differential equation-derived hyperchaotic systems. In order to enable efficient multidimensional encryption, the sensitivity to beginning conditions-a key component of chaos theory-has been extended into the hyperchaotic realm. The combination of DNA coding sequ...

This article presents a high-throughput image encryption algorithm implemented on an Artix-7 FPGA, which offers parallel processing, low latency, and real-time performance with a throughput of 0.8 Gbps, making it ideal for secure applications such as satellite imaging, surveillance, and medical diagnostics. The proposed method employs three chaotic...

Traditional machine learning (ML) relies on a centralized architecture, which makes it unsuitable for applications where data privacy is critical. Federated Learning (FL) addresses this issue by allowing multiple parties to collaboratively train models without sharing their raw data. However, FL is susceptible to data and model poisoning attacks th...

The exponential growth of digital imagery and the widespread adoption of automation and IoT technologies have heightened the need for robust image encryption techniques. Traditional encryption methods such as AES and DES, though effective for textual data, struggle with the high redundancy of images and real-time processing constraints. To address...

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In recent years, the increasing reliance on wireless networks has brought forth new challenges in ensuring the security and privacy of transmitted data. Simultaneously, there is a growing demand for encryption systems that exhibit strong performance, even in the presence of noise that can potentially degrade the transmitted data. Addressing both of...

The quintic perturbed Gerdjikov–Ivanov equation, a non-linear model in optics and quantum field theory, describes the propagation of optical pulses in nonlinear media with quintic nonlinearity and perturbation effects. This study aims to derive exact traveling wave solutions for the quintic perturbed Gerdjikov–Ivanov equation using the modified ext...

This article proposes a novel multiple-image encryption algorithm (MIEA) that utilizes parallel processing. The proposed MIEA combines multiple plain images, forming a plain image cube. The proposed MIEA is based on the generation and logical XORing of novel pseudo-random encryption keys from the hyperchaotic 4D Chen system and the Mersenne Twister...

Secure image encryption is critical for protecting sensitive data such as satellite imagery, which is pivotal for national security and environmental monitoring. However, existing encryption methods often face challenges such as vulnerability to traffic analysis, limited randomness, and insufficient resistance to attacks. To address these gaps, thi...

This inaugural editorial of the International Journal of Intelligent Signal Processing (IJISP) highlights the integration of artificial intelligence (AI), machine learning (ML), and traditional signal processing, transforming fields such as biomedical diagnostics, cybersecurity, autonomous systems, and communications. Despite advances, challenges s...

Large Language Models (LLMs) have emerged as powerful tools for natural language understanding and human-AI interaction. While LLMs excel at generating insights and responding to user queries, significant challenges arise when they are tasked with interacting with complex application data systems. Unlike basic database querying, real-world applicat...

This work presents a chaotic image encryption algorithm that acts on the binary level of the image for effective permutation, and on the byte level for substitution. The permutation step combines actions of bit level rearranging, and bit shuffling. Circular shift operations are used for bit shuffling, to reduce the execution time. Circular shifts a...

This paper proposes a multi-layer audio encryp-tion scheme based on the Memristive Coupled Neural Network (MCNN), S-box, and the Fibonacci Q-matrix. Initially, a pseudo-random key is generated using the MCNN system and XORed with the original audio data. Subsequently, an S-box, created using the OpenSSL Pseudo-random Number Generator (PRNG), is app...

Typically, chaos-based encryption applications are concerned with encrypting a single type of data, such as an image, text, or sound. Hence, often an encryption approach is restricted to that type of data. This paper explores the aforementioned problem and proposes a novel chaos-based encryption, which encrypts a file’s bytestream directly, rather...

This research work presents a novel secured spatial steganography algorithm consisting of three stages. In the first stage, a secret message is divided into three parts, each is encrypted using a tan logistic map encryption key with a unique seed value. In the second stage, the encrypted parts are transformed into quick response codes, serving as a...

In this paper, a novel image encryption scheme is presented that leverages a combination of hyperchaotic systems, Singular Value Decomposition (SVD), RC5 operations, permutation techniques, and a custom S-box generated via the XORshift algorithm. Multiple satellite images are merged into a single augmented image prior to encryption by this algorith...

This article proposes a novel double data security algorithm that first encrypts sensitive data using a two-stage encryption method based on numerical solutions from a fractional-order memristive coupled neural network system. Solutions are obtained to generate encryption keys and construct S-boxes, which are then applied along with an initial key...

Image encryption is essential for protecting sensitive visual data during transmission and storage. This article introduces a novel image encryption technique that utilizes three hyperchaotic systems: a memristor system, a hyperchaotic 7D system, and an Erbium-doped fiber laser-based system. The algorithm takes advantage of the complex dynamics and...

In this paper, a novel application of the improved modified extended tanh function has been implemented to derive analytical solutions for the longitudinal wave equation in a magneto-electro-elastic annular bar model. Singular, bright, dark, rational wave, Weierstrass elliptic doubly periodic, and exponential forms, are generated. These solutions a...

Image encryption has gained significant traction due to the rapid development of network communication, particularly in the context of the unique nature of images. The encryption techniques used for images differ greatly from traditional techniques employed for texts or files. Similarly, the widespread adoption of the Internet of Things (loT) by nu...

In this work, the dynamics for coupled system of dispersive nonlinear Schrödinger equation with Kudryashov's law of nonlinearity are studied with the aid of improved modified extended tanh function method. This model is used to mimic the wave propagation through magneto-optic wave guides. Various types of solutions are extracted for the proposed mo...

This research work extends the hyperchaotic 4D Chen system into the fractional-order domain to carry out image encryption over 3 stages. For the first encryption stage, the discrete Fourier transform (DFT) of the numerical solution of the fractional-order Chen system is obtained, quantized, and employed in carrying out DNA coding. For the second st...

In response to the escalating demand for fortified data security, this research delves into the domain of image encryption, leveraging chaotic systems, notably a memristor-based chaotic system incorporated as a pivotal component within a three-stage encryption scheme. The primary objective is to devise a high-quality and robust encryption scheme, u...

In this paper, we investigate soliton solutions and other exact solutions of the highly dispersive perturbed nonlinear Schrödinger equation having Kudryashov's arbitrary form with sextic-power law of refractive index and generalized non-local laws. Studying is conducted by applying the modified extended direct algebraic method, which offers several...

Hands-on experience is essential for comprehending a scientific subject and its lab experiments. Due to the shift towards E-Learning to reduce crowds in educational establishments and to divert away from pandemic risks, the necessity for lab simulation has expanded tremendously. This paper proposes an implementation of a virtual Physics lab with a...

This article presents a novel 2-layer image encryption cryptosystem and transmission protocol designed for secure communication of military reconnaissance images over unmanned aerial vehicle (UAV)-assisted relaying networks. The proposed scheme aims to address the growing need for robust, secure, and efficient transmission of sensitive imagery data...

This article attempts to identify the critical determinants of success for first-year engineering students at higher education institutions (HEIs) in Egypt. It scrutinizes the influence of various independent variables on student success, conceptualized as the dependent variable. By investigating these relationships, the research aims to delineate...

This work introduces a novel image encryption algorithm specifically designed for the protection of color medical images, particularly crucial in the era of cloud storage, where security and privacy are paramount. The initial phase of the encryption process leverages a substantial array of Fibonacci Q-matrices to manipulate image data intricately....

This work proposes a novel image encryption algorithm that integrates unique image transformation techniques with the principles of chaotic and hyper-chaotic systems. By harnessing the unpredictable behavior of the Chua system and the hyper-chaotic nature of the Chen system, the algorithm carries out rescaling, rotation, and randomization on the ta...

In this paper, the improved modified extended Tanh function technique is used to find analytical solutions to the cubic-quartic Lakshmanan-Porsezian-Daniel model which describes the pulse propagation in optical fiber. Using the traveling wave theory, the nonlinear partial differential form of the cubic-quartic Lakshmanan-Porsezian-Daniel equation i...

The development and utilization of effective image encryption techniques is seeing an unprecedented need with the advancements in multimedia production and exchange over unsecured networks. In a simultaneous manner, chaotic functions are increasingly being used by scholars to effectuate chaos in a deterministic manner, to develop pseudo-random bit-...

The security of visual data transmission over unsecured wireless cooperative networks is a current issue of paramount importance. This paper proposes a scheme for the secure communication of images over compress-and-forward relays. The scheme employs keys generated from cellular automata and OpenSSL, as well as an S-box constructed from extended ce...

p>This work proposes a novel image encryption algorithm that combines unique image transformation techniques with the principles of chaotic and hyperchaotic systems. The proposed algorithm performs rescaling, rotation, and randomization on the target image by exploiting the unpredictable behavior of the Chua system and the hyperchaotic nature of th...

p>This work proposes a novel image encryption algorithm that combines unique image transformation techniques with the principles of chaotic and hyperchaotic systems. The proposed algorithm performs rescaling, rotation, and randomization on the target image by exploiting the unpredictable behavior of the Chua system and the hyperchaotic nature of th...

The fast-paced advancement in multimedia production and exchanges over unsecured networks have led to a dire need to develop security applications. In this regard, chaos theory has much to offer, especially high-dimensional (HD) chaotic functions of fractional order. The authors propose a new symmetric, secure and robust image encryption method in...

The thesis paper presents a comprehensive investigation into securing game code by utilizing the advanced encryption standard (AES) and logistic map. The primary aim of this study was to contribute to the field through extensive literature research and the proposal of a two-stage encryption algorithm that combines the logistic map with AES-128. Mor...

This thesis explores the topic of securing game code through the integration of cellular automata and advanced encryption standard (AES). An extensive literature review was conducted to gain a comprehensive understanding of the subject matter. A two-stage encryption scheme was proposed, using Rule 30 cellular automata to generate an encryption key...

This thesis proposes a solution to secure patients’ data and privacy usingsteganography (LSB Embedding) and cryptography (AES Encryption).To achieve this objective, the first step will involve introducing concepts suchas IoT, IoMT, steganography, and cryptography, along with their advantages andapplications. Additionally, these topics will be compa...

Because digital images are widely utilized in a variety of applications and are subject to a variety of attacks, image encryption is becoming an increasingly important field of research in information security and network communications. As a result, this thesis addresses a business problem that many organizations face: the security of engineering...

Nowadays, the need for and significance of an effective image encryption technique is a matter of utmost importance especially for the fields that require the exchange of images containing sensitive information such as fingerprints, medical records, online personal photograph or military images, since those digital images are vulnerable to various...

The incredible advancements in digital image processing and network connectivity have led to a great need for real-time secure visual transmission via the Internet and wireless networks. Cryptography is one method of safeguarding digital media. Cryptography is the technique of scrambling the characters in a communication such that the reader cannot...

The increasing use of the internet for the transmission of automotive design data has led to a growing concern about the security of this data. In this thesis, a new method is proposed for securing automotive design data that is being transmitted over the internet. Our method uses a combination of cellular automata, S-box and the Lorenz system, Thi...

The need for securing the transmission of information over the public network has become critical in modern times, particularly for sensitive information such as Engineering Blueprints. This information is highly confidential and must be kept as such. Therefore, this paper proposes a 3-stage image cryptosystem to address this issue. The scheme empl...

With the explosion of the generation, transmission and sharing of image data over the Internet and other unsecured networks, the need for and significance of the development of novel image encryption algorithms are unprecedented. In this research work, we propose a novel framework for image encryption that is based on two hyperchaotic maps utilized...

With the explosion of the generation, transmission and sharing of image data over the Internet and other unsecured networks, the need and significance for the development of novel image encryption algorithms is unprecedented. In this research work, we propose a novel framework for image encryption that is based on two hyperchaotic maps, utilized in...

Image encryption is increasingly becoming an important area of research in information security and network communications as digital images are widely used in various applications and are vulnerable to various types of attacks. In this research work, a color image cryptosystem that is based on multiple layers is proposed. For every layer, an encry...

Image encryption is increasingly becoming an important area of research in information security and network communications, as digital images are widely used in various applications and are vulnerable to various types of attacks. In this research work, a color image cryptosystem that is based on a 3-layer permutation-substitution network (PSN) is p...

The unprecedented growth in production and exchange of multimedia over unsecured channels is overwhelming mathematicians, scientists and engineers to realize secure and efficient cryptographic algorithms. In this paper, a color image encryption algorithm combining the KAA map with multiple chaotic maps is proposed. The proposed algorithm makes full...

With advancements in computer and communication technologies, the production, utilization and applications of digital images is at an unprecedented rate. Recent applications include military communications, remote sensing, novel engineering designs storage and communications, as well as medical imaging. In most cases, such images convey highly sens...

With the proliferation of digital images over open networks, secure and efficient encryption schemes are imperative for safeguarding image privacy. This paper proposes a novel 5-stage image encryption algorithm adhering to Shannon’s confusion and diffusion paradigm. In the first stage, Langton’s Ant is employed to induce chaos and perturb the pixel...