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Classification of Citrus Plant Diseases Using Deep Transfer Learning

Computers, Materials & Continua 2022年第1期70卷 1401-1417页

作者： Muhammad Zia Ur Rehman Fawad Ahmed Muhammad Attique Khan Usman Tariq sajjad shaukat jamal.jawad ahmad Iqtadar Hussain Department of Electrical Engineering HITEC UniversityTaxilaPakistan Department of Computer Science HITEC UniversityTaxilaPakistan College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-KhrajSaudi Arabia Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia School of Computing Edinburgh Napier UniversityUK Department of Mathematics Statisticsand PhysicsQatar UniversityDoha2713Qatar

In recent years,the field of deep learning has played an important role towards automatic detection and classification of diseases in vegetables and *** in turn has helped in improving the quality and production of vegetables and *** fruits arewell known for their taste and nutritional *** are one of the natural and well known sources of vitamin C and planted *** are several diseases which severely affect the quality and yield of citrus *** this paper,a new deep learning based technique is proposed for citrus disease *** different pre-trained deep learning models have been used in this *** increase the size of the citrus dataset used in this paper,image augmentation techniques are ***,to improve the visual quality of images,hybrid contrast stretching has been *** addition,transfer learning is used to retrain the pre-trainedmodels and the feature set is enriched by using feature *** fused feature set is optimized using a meta-heuristic algorithm,the Whale Optimization Algorithm(WOA).The selected features are used for the classification of six different diseases of citrus *** proposed technique attains a classification accuracy of 95.7%with superior results when compared with recent techniques.

关键词： Citrus plant disease classification deep learning feature fusion deep transfer learning

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FPGA Implementation of Elliptic-Curve Diffie Hellman Protocol

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Computers, Materials & Continua 2022年第10期73卷 1879-1894页

作者： Sikandar Zulqarnain Khan sajjad shaukat jamal Asher Sajid Muhammad Rashid Department of Aeronautical Engineering Estonian Aviation AcademyTartu61707Estonia Department of Mathematics College of ScienceKing Khalid UniversityAbha61413Saudi Arabia Department of Electrical Engineering Bahria UniversityIslamabad44000Pakistan Department of Computer Engineering Umm Al-Qura UniversityMakkah21955Saudi Arabia

This paper presents an efficient crypto processor architecture for key agreement using ECDH(Elliptic-curve Diffie Hellman)protocol over GF2163.The composition of our key-agreement architecture is expressed in consisting of the following:(i)Elliptic-curve Point Multiplication architecture for public key generation(DESIGN-I)and(ii)integration of DESIGN-I with two additional routing multiplexers and a controller for shared key generation(DESIGN-II).The arithmetic operators used in DESIGN-I and DESIGNII contain an adder,squarer,a multiplier and inversion.A simple shift and add multiplication method is employed to retain lower hardware ***,an essential inversion operation is operated using the Itoh-Tsujii algorithm with similar hardware resources of used squarer and multiplier *** proposed architecture is implemented in a Verilog *** implementation results are given on a Xilinx Virtex-7 FPGA(field-programmable gate array)*** DESIGN-I and DESIGN-II over GF2163,(i)the utilized Slices are 3983 and 4037,(ii)the time to compute one public key and a shared secret is 553.7μs and 1170.7μs and(iii)the consumed power is 29μW and 57μ***,the achieved area optimized and power reduced results show that the proposed ECDH architecture is a suitable alternative(to generate a shared secret)for the applications that require low hardware resources and power consumption.

关键词： Elliptic curve cryptography point multiplication key-agreement diffie hellman area optimized architecture FPGA

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Blockchain-Based Robust Data Security Scheme in IoT-Enabled Smart Home

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Computers, Materials & Continua 2022年第8期72卷 3549-3570页

作者： Anusha Vangala Ashok Kumar Das YoungHo Park sajjad shaukat jamal Center for Security Theory and Algorithmic ResearchInternational Institute of Information TechnologyHyderabad500032India School of Electronics Engineering Kyungpook National UniversityDaegu41566Korea Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia

The recent surge in development of smart homes and smart cities can be observed in many developed *** the idea to control devices that are in home(embedded with the Internet of Things(IoT)smart devices)by the user who is outside the home might sound fancy,but it comes with a lot of potential *** can be many attackers who will be trying to take advantage of ***,there is a need for designing a secure scheme whichwill be able to distinguish among genuine/authorized users of the system and *** knowing about the details of when and what IoT devices are used by the user,the attacker can trace the daily activities of user and can plan an attack ***,the designed security scheme should guarantee confidentiality,anonymity and *** of the schemes proposed in the literature are either non-blockchain based which involves inherent problems of storing data in a single-server or assuming weaker attack *** this work,we propose a novel scheme based on blockchain technology,assuming a stronger Canetti and Krawczyk(CK)-threat *** the formal and informal security,and comparative analysis,we show that the proposed scheme provides a superior security and more functionality features,with less communication cost and comparable computational cost as compared to other competent ***,the blockchain based simulation study on the proposed scheme has been conducted to show its feasibility in real-life application.

关键词： Internet of things(IoT) smart home ubiquitous computing blockchain security

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Atmospheric Convection Model Based Digital Confidentiality Scheme

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Computers, Materials & Continua 2022年第6期71卷 4503-4522页

作者： Noor Munir Majid Khan Mohammad Mazyad Hazzazi Amer Aljaedi sajjad shaukat jamal Iqtadar Hussain Department of Applied Mathematics and Statistics Institute of Space TechnologyIslamabadPakistan Department of Mathematics College of ScienceKing Khalid UniversityAbha61413Saudi Arabia College of Computing and Information Technology University of TabukTabuk71491Saudi Arabia Department of Mathematics Statistics and PhysicsQatar UniversityDoha2713Qatar

Nonlinear dynamics is a fascinating area that is intensely affecting a wide range of different disciplines of science and technology *** combination of different innovative topics of information security and high-speed computing has added new visions into the behavior of complex nonlinear dynamical systems which uncovered amazing results even in the least difficult *** generation of complex actions froma very simple dynamical method has a strong relation with information *** protection of digital content is one of the inescapable concerns of the digitally advanced ***,information plays an important role in everyday life and affects the surroundings *** digital contents consist of text,images,audio,and videos,*** to the vast usage of digital images in the number of social and web applications,its security is one of the biggest *** this work,we have offered an innovative image encryption technique based on present criteria of confusion and *** designed scheme comprises two major nonlinear dynamical *** have employed discrete fractional chaotic iterative maps to add confusion capability in our suggested algorithm and continuous chaotic Lorenz *** have verified our offered scheme by using statistical *** investigations under the statistical tests suggested that our proposed technique is quite reasonable for the security of digital data.

关键词： Lorenz atmospheric convection model fractional logistic map image encryption S-box

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SBOOSP for Massive Devices in 5G WSNs Using Conformable Chaotic Maps

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Computers, Materials & Continua 2022年第6期71卷 4591-4608页

作者： Chandrashekhar Meshram Agbotiname Lucky Imoize sajjad shaukat jamal Amer Aljaedi Adel R.Alharbi Department of Post Graduate Studies and Research in Mathematics Jayawanti Haksar Government Post-Graduation CollegeCollege of Chhindwara UniversityBetul460001M.P.India Department of Electrical and Electronics Engineering Faculty of EngineeringUniversity of LagosAkoka100213LagosNigeria Department of Electrical Engineering and Information Technology Institute of Digital CommunicationRuhr University44801BochumGermany Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia College of Computing and Information Technology University of TabukTabuk 71491Saudi Arabia

The commercialization of the fifth-generation(5G)wireless network has *** devices are being integrated into 5G-enabled wireless sensor networks(5GWSNs)to deliver a variety of valuable services to network ***,there are rising fears that 5GWSNs will expose sensitive user data to new security *** secure end-to-end communication,key agreement and user authentication have been ***,when billions of massive devices are networked to collect and analyze complex user data,more stringent security approaches are *** integrity,nonrepudiation,and authentication necessitate special-purpose subtree-based signature mechanisms that are pretty difficult to create in *** address this issue,this work provides an efficient,provably secure,lightweight subtreebased online/offline signature procedure(SBOOSP)and its aggregation(Agg-SBOOSP)for massive devices in 5G WSNs using conformable chaotic *** SBOOSP enables multi-time offline storage access while reducing processing *** a result,the signer can utilize the pre-stored offline information in polynomial *** feature distinguishes our presented SBOOSP from previous online/offline-signing procedures that only allow for one ***,the new procedure supports a secret key during the pre-registration process,but no secret key is necessary during the offline *** suggested SBOOSP is secure in the logic of unforgeability on the chosen message attack in the random ***,SBOOSP and Agg-SBOOSP had the lowest computing costs compared to other contending ***,the suggested SBOOSP outperforms several preliminary security schemes in terms of performance and computational overhead.

关键词： Subtree-based online/offline signature procedure(SBOOSP) 5G WSNs provably secure scheme massive devices conformable chaotic maps

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A Novel Approach for Security Enhancement of Data Encryption Standard

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Computers, Materials & Continua 2023年第6期75卷 5073-5086页

作者： Dawood Shah Tariq Shah sajjad shaukat jamal Mohammad Mazyad Hazzazi Amer Aljaedi Adel R.Alharbi Department of Mathematics Quaid-i-Azam UniversityIslamabadPakistan Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia College of Computing and Information Technology University of TabukTabuk71491Saudi Arabia

Data Encryption Standard(DES)is a symmetric key cryptosystem that is applied in different cryptosystems of recent ***,researchers found defects in the main assembling of the DES and declared it insecure against linear and differential *** this paper,we have studied the faults and made improvements in their internal structure and get the new algorithm for Improved *** improvement is being made in the substitution step,which is the only nonlinear component of the *** alteration provided us with great outcomes and increase the strength of ***,a novel 6×6 good quality S-box construction scheme has been hired in the substitution phase of the *** construction involves the Galois field method and generates robust S-boxes that are used to secure the scheme against linear and differential *** again,the key space of the improved DES has been enhanced against the brute force *** out-comes of different performance analyses depict the strength of our proposed substitution boxes which also guarantees the strength of the overall DES.

关键词： DES S-box linear cryptanalysis differential cryptanalysis

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An Efficient Three-Factor Authenticated Key Agreement Technique Using FCM Under HC-IoT Architectures

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Computers, Materials & Continua 2022年第7期72卷 1373-1389页

作者： Chandrashekhar Meshram Agbotiname Lucky Imoize sajjad shaukat jamal Parkash Tambare Adel R.Alharbi Iqtadar Hussain Department of Post Graduate Studies and Research in Mathematics Jayawanti Haksar Government Post-Graduation CollegeCollege of Chhindwara UniversityBetul460001M.P.India Department of Electrical and Electronics Engineering Faculty of EngineeringUniversity of LagosAkokaLagos100213Nigeria Department of Electrical Engineering and Information Technology Institute of Digital CommunicationRuhr University44801BochumGermany Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia Water Resources&Applied Mathematics Research Lab Nagpur440027India College of Computing and Information Technology University of TabukTabuk71491Saudi Arabia Mathematics Program Department of MathematicsStatistics and PhysicsCollege of Arts and SciencesQatar University2713DohaQatar

The Human-Centered Internet of Things(HC-IoT)is fast becoming a hotbed of security and privacy *** users can establish a common session key through a trusted server over an open communication channel using a three-party authenticated key *** of the early authenticated key agreement systems relied on pairing,hashing,or modular exponentiation processes that are computationally intensive and *** order to address this problem,this paper offers a new three-party authenticated key agreement technique based on fractional chaotic *** new scheme uses fractional chaotic maps and supports the dynamic sensing of HC-IoT devices in the network architecture without a password *** projected security scheme utilized a hash function,which works well for the resource-limited HC-IoT *** results show that our new technique is resistant to password guessing attacks since it does not use a ***,our approach provides users with comprehensive privacy protection,ensuring that a user forgery attack causes no ***,our new technique offers better security features than the techniques currently available in the literature.

关键词： Three-party authenticated key agreement anonymity fractional chaotic maps Chebyshev polynomial password table human-centered internet of things(HC-IoT)

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Central Aggregator Intrusion Detection System for Denial of Service Attacks

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Computers, Materials & Continua 2023年第2期74卷 2363-2377页

作者： sajjad ahmad Imran Raza MHasan jamal Sirojiddin Djuraev Soojung Hur Imran Ashraf Department of Computer Science COMSATS University IslamabadLahore CampusLahore54000Pakistan Department of Software Engineering New Uzbekistan UniversityTashkent100007Uzbekistan Department of Information and Communication Engineering Yeungnam UniversityGyeongsan-si38541Korea

Vehicle-to-grid technology is an emerging field that allows unused power from Electric Vehicles(EVs)to be used by the smart grid through the central *** the central aggregator is connected to the smart grid through a wireless network,it is prone to cyber-attacks that can be detected and mitigated using an intrusion detection ***,existing intrusion detection systems cannot be used in the vehicle-to-grid network because of the special requirements and characteristics of the vehicle-to-grid *** this paper,the effect of denial-of-service attacks of malicious electric vehicles on the central aggregator of the vehicle-to-grid network is investigated and an intrusion detection system for the vehicle-to-grid network is *** proposed system,central aggregator–intrusion detection system(CA-IDS),works as a security gateway for EVs to analyze andmonitor incoming traffic for possible DoS *** are registered with a Central Aggregator(CAG)to exchange authenticated messages,and malicious EVs are added to a blacklist for violating a set of predefined policies to limit their interaction with the CAG.A denial of service(DoS)attack is simulated at CAG in a vehicle-to-grid(V2G)network manipulating various network parameters such as transmission overhead,receiving capacity of destination,average packet size,and channel *** proposed system is compared with existing intrusion detection systems using different parameters such as throughput,jitter,and *** analysis shows that the proposed system has a higher throughput,lower jitter,and higher accuracy as compared to the existing schemes.

关键词： Denial of service attack vehicle to grid network network security network throughput

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Collective behavior of cortico-thalamic circuits:Logic gates as the thalamus and a dynamical neuronal network as the cortex

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Chinese Physics B 2022年第2期31卷 687-695页

作者： Alireza Bahramian sajjad shaukat jamal Fatemeh Parastesh Kartikeyan Rajagopal Sajad Jafari Department of Biomedical Engineering Amirkabir University of Technology(Tehran polytechnic)Iran Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia Centre for Nonlinear Systems Chennai Institute of TechnologyChennaiIndia Health Technology Research Institute Amirkabir University of Technology(Tehran polytechnic)Iran

This paper introduces a two-layer network to investigate the effects of cortico-thalamic circuits on the cortex’s collective *** the brain,different parts of the cortex collaborate to process *** of the main parts,which is the path of different cortex contacts,is the thalamus whose circuit is referred to as the"vertical"cortico-thalamic *** subnuclei can participate in the processing of the information that passes through *** has been shown that they play the functional role of logic gates(AND,OR and XOR).To study how these thalamus circuits affect the cortical neuron behavior,a two-layer network is proposed wherein the cortex layer is composed of Hindmarsh–Rose models and the thalamus layer is constructed with logic *** show that considering these logic gates can lead the network towards different synchronization,asynchronization,chimera and solitary *** is revealed that for AND-gate and OR-gate,increasing the number of gates or their outputs can increase and decrease the network’s coherency in excitatory and inhibitory cases,***,considering XOR-gates always results in the chimera state.

关键词： two-layer network synchronization chimera state thalamus and cortex

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