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Blockchain Hybrid-model Scheme for Scalable Cross-domain Authorisation

Blockchain: Research and Applications 2025年

作者： Munkenyi Mukhandi Jorge Granjal João P. Vilela CISUC Dep. of Informatics Engineering University of Coimbra Portugal CISUC Dep. of Informatics Engineering & CRACS / INESCTEC & Dep. of Computer Science Faculty of Sciences University of Porto Portugal

We introduce a novel blockchain-based inter-ledger authorization scheme, a unique solution designed to support delegated authorization management in cross-domain cloud environments. This innovative approach enables client applications, acting on behalf of a user, to request access to specific resources owned by a different organization. It benefits cross-domain multi-cloud applications, such as large-scale collaboration projects involving multiple cloud service providers. Multi-cloud presents authorization challenges because of complex access control operations in multiple distinct domains. OAuth2 is the state-of-the-art choice for delegated authorization. However, it falls short in handling such complex interactions with multiple authorization servers and resource servers, and this is our motivation. Compared to OAuth2, our approach overcomes the limitations of a centralized model and achieves coordinated distinct delegations among multiple entities without a third-party trusted component. Authorization servers are blockchain participants and designated access token issuers, ensuring minimum client data collection and promoting client privacy. Multiple smart contracts are dep.oyed in our multi-ledger blockchain environment to guarantee the provenance of the authorization operations and facilitate scalable cross-domain authorization. Our ‘hybrid inter-ledger model’, combines security techniques such as blockchain-based device authentication, hashed-time locks (HTCLs), and service discovery. The blockchain-based device authentication ensures secure and trusted interactions, HTCLs enable time-bound transactions, and service discovery simplifies finding and connecting to the required cloud services. Our experimental evaluation provides insights into the scalability of our approach, which achieves decentralized authorization in a multi-cloud environment with acceptable latencies compared to related works and shows stable throughput against concurrent authorization reque

关键词： OAuth2 multi-cloud decentralised coordinated authorisation multi-ledgers blockchain security smart contracts

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Next Generation Image Watermarking via Combined DWT-SVD Technique 2

Next Generation Image Watermarking via Combined DWT-SVD Tech...

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2nd International Conference on Cyber Resilience, ICCR 2024

作者： Al-Na'amneh, Qais Almomani, Ammar Nasayreh, Ahmad Nahar, Khalid M.O. Gharaibeh, Hasan Al Mamlook, Rabia Emhamed Alauthman, Mohammad Applied Science Private University Department Of Cyber Security Amman Jordan School Of Computing Skyline University College P.O. Box 1797 Sharjah United Arab Emirates AlHuson University College AlBalqa Applied University I. T. Department Irbid Jordan Yarmouk University Department Of Computer Sciences Irbid211633 Jordan Yarmouk University Faculty Of Information Technology Computer Sciences Irbid211633 Jordan Trine University Dep. Of Business Administration IN United States University Of Zawia Dep.of Mechanical And Industrial Engineering Tripoli Libya University Of Petra Faculty Of Information Technology Department Of Information Security Amman Jordan

ISBN: (纸本)9798350394962

Personal computers and the Internet are used in different areas and are easier to use. Most data is easy to transmit and duplicate in digital format, and being tampered with and stolen easily leads to issues for content owners and service providers. The Paper describes a secure (tampering-resistant) method for watermarking images for protection and authentication and digital media like audio, video, and multimedia data, and a combination of singular value decomposition (SVD) and Discrete wavelet transform (DWT) for insertion watermark by MATLAB to increase accuracy, simplicity, and flexibility Readability, secure robustness, and imperceptibility the visibility of the image. The proposed algorithm consists of three main steps: Firstly, we decomposed the original image into four sub-bands and the original watermark. Secondly, embed the watermark in the LL sub-band by replacing the singular value for the watermark. Finally, embed a watermark in the other three sub-bands by adding LL values for a watermark in each sub-band in the original image. © 2024 IEEE.

关键词： Discrete wavelet transforms

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Robust machine learning in critical care - Software engineering and medical perspectives 1

Robust machine learning in critical care - Software engineer...

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1st IEEE/ACM Workshop on AI engineering - Software engineering for AI, WAIN 2021

作者： Staron, Miroslaw Herges, Helena Odenstedt Naredi, Silvana Block, Linda El-Merhi, Ali Vithal, Richard Elam, Mikael University of Gothenburg Computer Science and Engineering Chalmers Gothenburg Sweden Sahlgrenska University Hospital Dep. of Anesthesiology and Intensive Care Sahlgrenska Academy and Region Västra Götaland Gothenburg Sweden Sahlgrenska Academy Institute of Neurosc. and Physiology Dep. of Clinical Neuroscience Gothenburg Sweden

ISBN: (纸本)9781665444705

Using machine learning in clinical practice poses hard requirements on explainability, reliability, replicability and robustness of these systems. Therefore, developing reliable software for monitoring critically ill patients requires close collaboration between physicians and software engineers. However, these two different disciplines need to find own research perspectives in order to contribute to both the medical and the software engineering domain. In this paper, we address the problem of how to establish a collaboration where software engineering and medicine meets to design robust machine learning systems to be used in patient care. We describe how we designed software systems for monitoring patients under carotid endarterectomy, in particular focusing on the process of knowledge building in the research team. Our results show what to consider when setting up such a collaboration, how it develops over time and what kind of systems can be constructed based on it. We conclude that the main challenge is to find a good research team, where different competences are committed to a common goal. © 2021 IEEE.

关键词： Software design

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An Efficient Quantum cryptanalysis of lightweight hash function - PHOTON-Beetle

An Efficient Quantum cryptanalysis of lightweight hash funct...

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Automation, Computing and Renewable Systems (ICACRS), International Conference on

作者： Swamy Naidu Allu Appala Naidu Tentu Gangadhara Rao Kancharla Dep. of Computer Science & Engineering Acharya Nagarjuna University Guntur Andhra Pradesh India CR Rao AIMSCS UoH Campus Hyderabad Telangana India CR Rao Advanced Institute of Mathematics Statistics and Computer Science University of Hyderabad Campus Hyderabad Telangana India

Quantum cryptanalysis methods are used to crack the majority of symmetric key ciphers. With this knowledge, cryptologists should be able to create post-quantum symmetric ciphers by incorporating these new quantum cryptanalysis techniques into their toolkit. Secure communication is crucial for applications related to the Internet of Things (IoT) to avoid cyberattacks. Cryptographic hash functions can be used to protect data integrity. The development of large-scale, fault-tolerant quantum computers is the most significant challenge. Recent techniques to attack symmetric key schemes can be achieved by using the Pre-image attack method, Simon’s algorithm, or by combining Simon’s and Grover’s algorithms. In this study, we explored some of the most recent methods for quantum cryptanalysis of symmetric key ciphers. Firstly, we discussed the design of quantum cryptanalysis methods, along with the advantages over classical procedures. In this paper, we illustrate the implementation of the NIST-standard lightweight hash function PHOTON-Beetle on a Quantum computer (using IBM Qiskit), which is mostly used in IoT devices. Efficient quantum implementation of PHOTON-Beetle is proposed in this paper. This paper calculates the quantum cost of PHOTON-Beetle for every layer and compares it with [1].

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Controller Chip Design of Serial-Parallel-Switched-Capacitor Coupled-Inductor Boost DC-AC Inverter 3

Controller Chip Design of Serial-Parallel-Switched-Capacitor...

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3rd International Conference on Power and Energy Applications, ICPEA 2020

作者： Chang, Yuen-Haw Li, Zheng-Bin Chaoyang University of Technology Dep. of Computer Science and Information Engineering Wufong Taichung Taiwan

ISBN: (纸本)9781728190297

This work is focused on the controller chip design/implementation of serial-parallel-switched-capacitor coupled-inductor (SPSCCI) inverter applied to high-gain boost DC-AC conversion. The controlled plant is its power part made up of SPSCCI booster and DC-link inverter to perform a practical DC-AC conversion from 12V to 110VRMS, 60Hz. Here, for achieving this goal, the controller is its control part constructed by sinusoidal pulse-width-modulation (SPWM) compensator plus phase generator, and then is implemented under Cadence full-custom design through pre-layout simulation (PRE-SIM) and post-layout simulation (POST-SIM) on a fabricated chip of integrated circuit: no. D35-105B-E0008, TSMC $0.35\mu \mathrm{m}$ 2P4M, $1500\times 1500\mu \mathrm{m}^{2}$, 5.0V, 2.68mW, max frequency 200kHz. Finally, with the help of this controller chip, a closed-loop prototype circuit of this SPSCCI can be realized and verified experimentally for some test cases of DC-AC to validate the feasibility of this inverter. © 2020 IEEE.

关键词： Pulse width modulation

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DPFTT: Distributed Particle Filter for Target Tracking in the Internet of Things

DPFTT: Distributed Particle Filter for Target Tracking in th...

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International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks (PEMWN)

作者： Sahar Boulkaboul Djamel Djenouri Miloud Bagaa CERIST Research Center Algiers Algeria Dep. of Computer Science and Creative Technologies CSRC University of the West of England (UWE) Bristol UK Department of Electrical and Computer Engineering Universit du Qubec Trois-Rivires Trois-Rivires QC Canada

A novel distributed particle filter algorithm for target tracking is proposed in this paper. It uses new metrics and addresses the measurement uncertainty problem by adapting the particle filter to environmental changes and estimating the kinematic (motion-related) parameters of the target. The aim is to calculate the distance between the Gaussian-distributed probability densities of kinematic data and to generate the optimal distribution that maximizes the precision. The proposed data fusion method can be used in several smart environments and Internet of Things (IoT) applications that call for target tracking, such as smart building applications, security surveillance, smart healthcare, and intelligent transportation, to mention a few. The diverse estimation techniques were compared with the state-of-the-art solutions by measuring the estimation root mean square error in different settings under different conditions, including high-noise environments. The simulation results show that the proposed algorithm is scalable and outperforms the standard particle filter, the improved particle filter based on KLD, and the consensus-based particle filter algorithm.

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Optimal Management of a Hydro – Wind Energy System with Hydrogen Storage

Optimal Management of a Hydro – Wind Energy System with Hyd...

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International Conference on Power science and engineering (ICPSE)

作者： J. C. Alberizzi M. A. Pérez Estevez M. Renzi L. Jin M. Rossi A. Alberizzi Faculty of Engineering Free University of Bozen - Bolzano Bozen - Bolzano Italy Dep. of Industrial. Engineering. and Math. Science (DIISM) Marche Polytechnic University Ancona Italy Electrical Computer and Biomedical Engineering University of Pavia Pavia Italy

The exploitation of renewable energy sources is nowadays a fundamental factor for the sustainable development and the transition to low a carbon energy production system. However, the fluctuating and unpredictable behavior of energy sources like wind complicates their integration into energy systems and they need to be coupled with storage systems to fully exploit their potential. The main objective of this paper is thus to develop a novel Mixed Integer Linear Programming (MILP) algorithm capable of providing the optimal sizing and management of a hydrogen storage unit within a Hybrid Renewable Energy System (HRES) in which the produced energy is sold to the power grid. The algorithm has been validated with data from a case study located in Italy. The Hybrid Renewable Energy System under investigation is constituted by a hydropower plant, a wind turbine and a hydrogen storage system. The latter is composed of a Polymer Electrolyte Membrane (PEM) electrolyzer, four pressurized hydrogen tanks, and a PEM fuel cell. The optimal management has been obtained by responding to a unit commitment analysis.

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TIoT: A Trust by Design Architecture for Secure and Private Internet of Things (IoT)

TIoT: A Trust by Design Architecture for Secure and Private ...

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IEEE SSD International Multi-Conference on Systems, Signals and Devices

作者： H. Alsheakh Tareq Nasser Mahdi Mustafa S. Kadhm Abeer Al Shammari Fatimah I. Abdulsahib Hazeem B Taher Waleed Algriree Marwa Q. Alobaidi Hayder Dhafer Mohammed Department of Computer Science College of Science Mustansiriyah University Baghdad Iraq Clinical Laboratory Science College of Pharmacy Mustansiriyah University Baghdad Iraq IT Directorate Ministry of Science and Technology Baghdad Iraq Department of Computer Science Szechenyi Istvan Egyetem Gyor Hungary Department of Computer Science University of Thi-Qar Thi-Qar Iraq Dep. Of Wireless Communication and Network Engineering University Putra Malaysia Selangor Malaysia National Engineering School of Sfax Sfax University Sfax Tunisia College of Pharmacy Mustansiriyah University Baghdad Iraq

ISBN: (数字)9798350374131

ISBN: (纸本)9798350374148

The Internet of Things (loT) facilitates the interconnection of a vast array of devices, services, and individuals for data exchange in multi-domain loT ecosystems, the social, physical, and cyber domains. That emerges various security, privacy, and trust issues, such as vulnerabilities, threats, and attacks. Addressing these challenges requires innovative solutions. New controls (solutions) are needed. Trust by design can be one of these controls, supporting security and privacy (among other system components). This paper proposes a Trusted loT (TloT), a trust-by-design model, and highlights the author's principal contributions. First, it advocates for implementing Tlo T through trust services. Second, it outlines an architecture for using trust by design in loT, including the design of its top-level structure and activities. Minor contributions include overviews of loT and trust, as well as looking at security and privacy in terms of security services and privacy services, respectively.

关键词： Privacy Ecosystems Security Internet of Things Arrays

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An Overview of Information Hiding Techniques Challenges and Applications 23

An Overview of Information Hiding Techniques Challenges and ...

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Proceedings of the 7th International Conference on Future Networks and Distributed Systems

作者： Ali Noori Kareem Omar Adil Deheyab Aws Zuhair Sameen Mohammed Hasan Alwan Yousif I Hammadi Mayssam Saad Kadhum Ahmed Aziz Muthana Ali Salem Ali Department of Computer engineering University of Diyala Iraq Department of Communications Engineering Bilad Alrafidain University College Iraq Department of Medical Instrumentation Engineering Techniques Al-Farahidi University Iraq Department of Communications Engineering University of Diyala Iraq Dep. of Medical Instruments Engineering Techniques Bilad Alrafidain University College Iraq Department of computer science Benha university Egypt and International Business Management Department Tashkent State University of Economics Uzbekistan Department of Computer-aided Design and Engineering Design National University of Science and Technology Russia

ISBN: (纸本)9798400709036

The internet became a common communication platform for many people. However, information transmission is not secure, and there is a high probability of copying and altering the information easily. In the public network, transmitting sensitive or private information needs some kind of protection. Unless a secure channel is utilized for the transmission. Hiding the information is one of the efficient techniques that provides a solution for transmitting confidential data over communication channels. These techniques should meet various application requirements such as high robustness against attacks, real-time, and high hiding capacity. Generally, information-hiding techniques suffer from many challenges. This paper provides an insight into these techniques, their applications, and challenges to fill the gap of missing such an overview.

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Analysis and Design of Terahertz Elliptical Slot Antenna Based on Photonic Crystal Substrate

Analysis and Design of Terahertz Elliptical Slot Antenna Bas...

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Antennas and Propagation Society International Symposium

作者： Mohamed Nasreddine Temmar Mourad Nedil Abdellah Chehri School of Engineering Université du Québec en Abitibi-Témiscamingue (UQAT) Val-d'Or QC Canada Dep. of Math. and Computer Science Royal Military College of Canada Kingston ON Canada

This paper aims to develop a photonic band gap substrate-based slot microstrip patch antenna for terahertz applications. The proposed antenna is based on an elliptical slotted patch placed on the top of a photonic crystal structure to improve the conventional microstrip patch antenna in terms of the undesirable surface waves and its electrical properties. As a result, good radiation characteristics are achieved. Besides, an enhancement of more than 35% and 91% are observed for a total bandwidth of 203.5 GHz and a realized gain of 9.1 dBi, respectively.

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