Integrating identity-based cryptography in IMS service authentication

Nowadays, the IP Multimedia Subsystem (IMS) is a promising research field. Many ongoing works related to the security and the performances of its employment are presented to the research community. Although, the security and data privacy aspects are very important in the IMS global objectives, they observe little attention so far. Secure access to multimedia services is based on SIP and HTTP digest on top of IMS architecture. The standard deploys AKA-MD5 for the terminal authentication. The third Generation Partnership Project (3GPP) provided Generic Bootstrapping Architecture (GBA) to authenticate the subscriber before accessing multimedia services over HTTP. In this paper, we propose a new IMS Service Authentication scheme using Identity Based cryptography (IBC). This new scheme will lead to better performances when there are simultaneous authentication requests using Identity-based Batch Verification. We analyzed the security of our new protocol and we presented a performance evaluation of its cryptographic operationsComment: 13Page

Individualisation avancée des services IPTV

Le monde de la TV est en cours de transformation de la télévision analogique à la télévision numérique, qui est capable de diffuser du contenu de haute qualité, offrir aux consommateurs davantage de choix, et rendre l'expérience de visualisation plus interactive. IPTV (Internet Protocol TV) présente une révolution dans la télévision numérique dans lequel les services de télévision numérique sont fournis aux utilisateurs en utilisant le protocole Internet (IP) au dessus d une connexion haut débit. Les progrès de la technologie IPTV permettra donc un nouveau modèle de fourniture de services. Les fonctions offertes aux utilisateurs leur permettent de plus en plus d autonomie et de plus en plus de choix. Il en est notamment ainsi de services de type nTS (pour network Time Shifting en anglais) qui permettent à un utilisateur de visionner un programme de télévision en décalage par rapport à sa programmation de diffusion, ou encore des services de type nPVR (pour network Personal Video Recorder en anglais) qui permettent d enregistrer au niveau du réseau un contenu numérique pour un utilisateur. D'autre part, l'architecture IMS proposée dans NGN fournit une architecture commune pour les services IPTV. Malgré les progrès rapides de la technologie de télévision interactive (comprenant notamment les technologies IPTV et NGN), la personnalisation de services IPTV en est encore à ses débuts. De nos jours, la personnalisation des services IPTV se limite principalement à la recommandation de contenus et à la publicité ciblée. Ces services ne sont donc pas complètement centrés sur l utilisateur, alors que choisir manuellement les canaux de diffusion et les publicités désirées peut représenter une gêne pour l utilisateur. L adaptation des contenus numériques en fonction de la capacité des réseaux et des dispositifs utilisés n est pas encore prise en compte dans les implémentations actuelles. Avec le développement des technologies numériques, les utilisateurs sont amenés à regarder la télévision non seulement sur des postes de télévision, mais également sur des smart phones, des tablettes digitales, ou encore des PCs. En conséquence, personnaliser les contenus IPTV en fonction de l appareil utilisé pour regarder la télévision, en fonction des capacités du réseau et du contexte de l utilisateur représente un défi important. Cette thèse présente des solutions visant à améliorer la personnalisation de services IPTV à partir de trois aspects: 1) Nouvelle identification et authentification pour services IPTV. 2) Nouvelle architecture IPTV intégrée et comportant un système de sensibilité au contexte pour le service de personnalisation. 3) Nouveau service de recommandation de contenu en fonction des préférences de l utilisateur et aussi des informations contextesInternet Protocol TV (IPTV) delivers television content to users over IP-based network. Different from the traditional TV services, IPTV platforms provide users with large amount of multimedia contents with interactive and personalized services, including the targeted advertisement, on-demand content, personal video recorder, and so on. IPTV is promising since it allows to satisfy users experience and presents advanced entertainment services. On the other hand, the Next Generation Network (NGN) approach in allowing services convergence (through for instance coupling IPTV with the IP Multimedia Subsystem (IMS) architecture or NGN Non-IMS architecture) enhances users experience and allows for more services personalization. Although the rapid advancement in interactive TV technology (including IPTV and NGN technologies), services personalization is still in its infancy, lacking the real distinguish of each user in a unique manner, the consideration of the context of the user (who is this user, what is his preferences, his regional area, location, ..) and his environment (characteristics of the users devices screen types, size, supported resolution, and networks available network types to be used by the user, available bandwidth, .. ) as well as the context of the service itself (content type and description, available format HD/SD , available language, ..) in order to provide the adequate personalized content for each user. This advanced IPTV services allows services providers to promote new services and open new business opportunities and allows network operators to make better utilization of network resources through adapting the delivered content according to the available bandwidth and to better meet the QoE (Quality of Experience) of clients. This thesis focuses on enhanced personalization for IPTV services following a user-centric context-aware approach through providing solutions for: i) Users identification during IPTV service access through a unique and fine-grained manner (different from the identification of the subscription which is the usual current case) based on employing a personal identifier for each user which is a part of the user context information. ii) Context-Aware IPTV service through proposing a context-aware system on top of the IPTV architecture for gathering in a dynamic and real-time manner the different context information related to the user, devices, network and service. The context information is gathered throughout the whole IPTV delivery chain considering the user domain, network provider domain, and service/content provider domain. The proposed context-aware system allows monitoring user s environment (devices and networks status), interpreting user s requirements and making the user s interaction with the TV system dynamic and transparent. iii) Personalized recommendation and selection of IPTV content based on the different context information gathered and the personalization decision taken by the context-aware system (different from the current recommendation approach mainly based on matching content to users preferences) which in turn highly improves the users Quality of Experience (QoE) and enriching the offers of IPTV servicesEVRY-INT (912282302) / SudocSudocFranceF

Guest editorial

The new era of Internet of Things (IoT) is driving the evolution of conventional vehicle ad hoc networks (VANET) into the Internet of Vehicles (IoV) paradigm. According to recent predictions, 25 billion of \u201cthings\u201d will be connected to the Internet by 2020 among which vehicles will constitute a significant portion. The difference of the vehicle concept in VANET and IoV makes these two scenarios essentially different in the device, communications, networking, and services aspects. In VANET, a vehicle is mainly considered as a node to disseminate messages among vehicles. In the IoV paradigm, each vehicle is considered as a smart object equipped with a powerful multisensor platform, communications technologies, computation units, and Internet protocol (IP)-based connectivity to the Internet and to other vehicles either directly or indirectly. In addition, a vehicle in IoV is envisioned as a multi-communication model, enabling the interactions between intravehicle components, vehicles and vehicles, vehicles and road, and vehicles and people. IoV enables the acquisition and processing of large amount of data from versatile geographical areas via intelligent vehicles computing platforms to offer various categories of services for road safety and other services to drivers and passengers. There are many unprecedented challenges to realize IoV. A typical challenge is the big data processing and storage in IoV due to huge number of connected vehicles. Personal cloud and mobile cloud computing are envisioned to play important roles in dealing with the big data. The seamless integration of the social context into IoV is a promising approach as well as an important question to achieve green transport. In addition, the wide penetration of electrical vehicles in the near future will demand a very careful consideration on the intelligent interactions between IoV and the smart grid. Here, the interactions are not limited to the communications and computation, but the power load scheduling within the demand response management framework in the vehicle-to-grid (V2G) network. All these issues are being studied in academics, industries, and standardization organizations. This JOURNAL\u2019s Special Issue publishes original contributions on IoV, sharing the research efforts and deployment challenges in this area, and discussing IoV challenges and key enabling techniques. Seven papers are published on original work on new network technologies for IoV, efficient and high throughput medium access control (MAC) layer technologies and scheduling algorithms, new content distribution mechanism, vehicle to grid services, and intrusion detection and privacy

Vehicular Networks

Critical, Cutting-Edge Insight to Speed Deployment of Vehicular NetworksAs Vehicular Networks technology enters a critical phase in its evolution, academic institutions, industry, and governments worldwide are investing significant resources into large-scale deployment of such networks in order to leverage its benefits to communication, road safety, and improved traffic flow. Despite the current proliferation of conferences to address the technical, policy, and economic challenges associated with this exciting new technology, notably absent is a self-contained book that integrates and covers these topics in sufficient detail.Vehicular Networks: Techniques, Standards and Applications examines the latest advances in the evolution of vehicular networks, presenting invaluable state-of-the-art ideas and solutions for professionals and academics at work on numerous international development and deployment projects. A versatile text, it cross-references all key aspects, including medium access, scheduling, mobility, services, market introduction, and standard specifications. This informative guide:Describes the roles of networks operators, car manufacturers, service providers, and governmental authorities in development of vehicular technologyIllustrates the benefits and real-life applications of vehicular networksAnalyzes possible business models for network deploymentExamines potential services and possible deployment architecturesExplores the technical challenges of deployment, including use of MAC protocols, routing, data dissemination, dynamic IP autoconfiguration, mobility management, security, and driver/passenger privacy Illustrative Figures to Clarify Both Basic and Advanced ConceptsUsing simplified language, this book elucidates the distinct behavior and characteristics that distinguish vehicular networks from other types of mobile networks. It is an invaluable resource for those working with or studying vehicular networks and other wireless or mobile communications systems

Digital TV

Supplying you with a clear understanding of the technical and deployment challenges, Media Networks: Architectures, Applications, and Standards covers media networks basics, architectures, protocols, standards, specifications, advanced audiovisual and multimedia services, and future directions. Focusing on video and audio-visual services, it provides wide-scale reference on media networks and the audiovisual domain. The book investigates the different network architectures along with their related protocols and standards. It examines the different digital TV technologies as well as their deployment architectures. Illustrating the role of network operators, service providers, content providers, and manufacturers, this timely reference is divided into three parts: Presents digital TV technologies, including Open IPTV, Mobile TV, 3D video, and content delivery networks Covers media content delivery and quality of experience (QoE) Examines user-centricity and immersive technologies that take into account advanced services personalization, immersive technologies architectures and applications, e-health, and societal challenges The book considers emerging media content delivery architectures including Future Internet, CDN (Content Delivery Networks) architectures and Content Centric Networks (CCN) approaches, while examining the technical challenges and standardization efforts related to such issues. It presents the Quality of Experience (QoE) in Future Internet/ Next Generation Mobile Networks and also covers the management of media (audio/video) information in Future Internet, including transport protocols and compression technologies. The book concludes by describing pressing societal challenges for networked media. -- From Amazon.co

Authentification dans les réseaux véhiculaires opérés

In this thesis, we address the challenge of users' authentication in vehicular networks managed by the network operator. The difficulty of our task lies in coping with the special characteristics of vehicular networks which are mainly high mobility, connectivity instability and diversity of security models and challenges following the services types. We employ a WLAN radio technology (i.e. the maximal transmission range is around 1000 m) which is known to be easier and less costly to deploy. More concretely, we propose and analyze a set of architectures and protocols for authentication in vehicular networks. Our architectures and protocols implement a number of mechanisms achieving authentication and credential delivery to vehicles while garanteeing security of the authentication messages, privacy of drivers, access restriction to layer 3 (i.e. network layer) services and protocols before the successful completion of the authentication, availability of authentication and consideration of real time constraints.Nous nous proposons dans cette thèse de répondre à l'enjeu de l'authentification avec l'opérateur réseau dans le contexte particulier des réseaux véhiculaires; contexte marqué par une forte dynamique des noeuds, uneconnectivité intermittente et une diversité des modèles et des enjeux de sécurité suivant la typologie des services. Nous nous intéressons en particulier aux réseaux véhiculaires s'appuyant sur une technologie de type WLAN "Wireless Local Area Network" (i.e. portée de transmission maximale de l'ordre de 1000 m) dont les coûts de déploiement sont réputés moindres. Plus concrètement, nous proposons et analysons des architectures et des protocoles pour l 'authentification dans les réseaux véhiculaires. Ces architectures et protocoles implémentent divers mécanismes susceptibles d'assurer au-delà de l'authentification mutuelle et de la délivrance des lettres de créance, la sécurité des données d'authentification, l'intimité numérique des utilisateurs, l'interdiction d'accès aux protocoles et services de la couche 3 (i.e. couche réseau) avant l'achèvement du processus d'authentification, la disponibilité de l'authentification et le respect des contraintes temps réel.PARIS-Télécom ParisTech (751132302) / SudocSudocFranceF

Context-Aware IPTV

Abstract. The advances in IPTV technology enable a new user-centric and interactive TV model, in which context-awareness concept is promising in making users' interaction with the TV dynamic and transparent. In this paper we present several existing contributions that employ context-awareness concept to allow interactive services. Some of these contributions directly focus on TV, while others are proposed for specific NGN services. We analyze these contributions based upon some requirements that we define for enabling advanced IPTV services personalization

Cooperation in Autonomous Vehicular Networks

International audienceThis chapter explores cooperation issues in large‐scale vehicular networks, where vehicles communicate with each other and with the infrastructure via wireless links. High‐level services are built following a cooperative model that depends exclusively on the participation of contributing vehicles. The chapter focuses on the major technical challenges that are currently being resolved from cooperation perspectives for various OSI layers, such as physical and medium access control layers, network and application layers, authentication and security, and so on. It gives an overview on vehicular networks and some existing contributions in the field of cooperative vehicular networks

Context aware quality of experience for audio-visual service groups

International audienceWith the network heterogeneity and increasing demand for multimedia audio-visual services and applications, Quality of Experience (QoE) has become a crucial determinant of the success or failure of these applications and service