4 research outputs found
Privacy dans l’IdO basée sur une approche cryptographique et non cryptographique
Full text linkL'Internet des Objets (IdO) a émergé comme un secteur dynamique de l'internet, capturant un intérêt significatif ces dernières années et ayant un impact transformationnel sur la société. Ce domaine, regroupant une gamme variée d'objets connectés de tailles diverses, offre une multitude d'applications dans des domaines allant de la domotique à l'agriculture, en passant par la sécurité, les transports et la santé. L'IdO vise à faciliter l'interaction entre les objets agissant comme des capteurs et des actionneurs, permettant ainsi le contrôle à distance des appareils intelligents via des connexions ouvertes. Néanmoins, cette ouverture expose les données sensibles à un large éventail de risques, les rendant vulnérables à diverses formes d'attaques. La sécurisation de ces réseaux représente un défi majeur, en particulier dans des environnements caractérisés par des ressources limitées et une diversité importante. Pour répondre à ces défis, nous proposons trois mécanismes de sécurité robustes pour les systèmes IdO, conçus pour contrer les menaces émanant des connexions ouvertes. L'évaluation de ces solutions, réalisée à l'aide de la logique de Burrows-Abadi-Needham (BAN) et de l'outil de validation automatisée AVISPA, démontre leur fiabilité, leur efficacité et leur adaptation aux spécificités des réseaux IdO, comparativement à d'autres techniques récentes similaires
Enhanced supervisor energy management technique of DC microgrid-based PV/wind/battery/SC
No full textInternational audience© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.Isolated DC microgrid-based renewable energy sources (RES) require a concurrent high energy and high-power density presence. The most effective approach is employing a hybrid energy storage system (HESS). Supercapacitors (SCs) are used to recover braking energy during fast power changes to improve battery performance and decrease battery stress. Additionally, SCs can be utilized to keep batteries charged for prolonged periods and store surplus energy generated by RES. This paper suggests an energy management technique EMT to facilitate energy sharing among RES, HESS, and the demand load. The EMT ensures that the state of charge SOC of the HESS remains within the limitation range (80% ≥ SOC ≥ 20%). Furthermore, the EMT regulates the DC link voltage and tracks the battery and SC with desired current references in twelve different scenarios. The effectiveness of the suggested EMT is verified through simulated tests performed under various fluctuations and operating situations. The EMT demonstrates successful power sharing among the components and achieves faster DC link voltage regulation with less than 2% overshoot. Moreover, the EMT enhances power quality attributes in the DC microgrid and enables smooth mode transitions
Author Correction: Phytochemical analysis, biological activities of methanolic extracts and an isolated flavonoid from Tunisian Limoniastrum monopetalum (L.) Boiss: an in vitro and in silico investigations
Full text linkCorrection to: Scientifc Reports https://doi.org/10.1038/s41598-023-46457-6, published online 06 November 2023
Te original version of this Article contained errors in the spelling of the authors Omar Messaoudi and Giovanni
Vidari which were incorrectly given as Omar Messoudi and Vidari Giovanni.
Te original Article has been corrected
A Privacy-Enhanced Scheme Within The Public Key Infrastructure For The Internet Of Things, Employing Elliptic Curve Diffie-Hellman (ECDH)
Full text linkThe Public Key Infrastructure (PKI) serves as the foundation for online security, particularly within the realm of the Internet of Things (IoT). It operates based on certified public keys that remain permanent but can be revoked when necessary, such as in the case of a change in ownership, compromise of the private key, or malicious activities. Although this method ensures secure key utilization with traceability, it also introduces a potential privacy risk due to the traceability and utilization of identity-based certificates. This approach is considered an innovative strategy for ensuring user confidentiality, integrity, authentication, and privacy in the context of the Internet of Things. The proposed solution integrates elliptic curves (ECDH) and traditional PKI to safeguard user privacy. It introduces two types of elliptic curve keys: long-term identity-based certified keys and dynamically generated temporary anonymous aliases. These aliases are seamlessly recorded by the certification authority, which maintains distinct directories for long-term and temporary keys. This dual-key approach enhances security while addressing the specific requirements of the Internet of Things
