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Thèses sur le sujet « LI. Authentication, and access control »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 31 juillet 2025

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1

SILVESTRE, BRUNO OLIVEIRA. "INTERINSTITUTIONAL ACCESS: AUTHENTICATION AND ACCESS CONTROL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6619@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O uso de computação distribuída vem expandindo seu escopo, saindo de aplicações em redes locais para aplicações envolvendo diversas instituições. Em termos de segurança, essa expansão introduz desafios em identificar usuários oriundos das diferentes organizações e definir seus direitos de acesso a determinado recurso. Abordagens comuns adotam a replicação do cadastro dos usuários pelas diversas instituições ou o compartilhamente de uma mesma identidade por um conjunto de usuários. Entretanto, essas estratégias apresentam

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Johnson, Henric. "Toward adjustable lightweight authentication for network access control /." Karlskrona : Blekinge Institute of Technology, 2005. http://www.bth.se/fou/Forskinfo.nsf/allfirst2/30ef501d402539d3c12570f5005184f4?OpenDocument.

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Behrad, Shanay. "Slice specific authentication and access control for 5G." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAS007.

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La cinquième génération de réseaux cellulaires mobiles, 5G, est conçue pour prendre en charge un ensemble de nouveaux cas d'utilisation et exigences, par exemple concernant la qualité de service ou la sécurité. En utilisant les technologies de virtualisation et le concept de découpage de réseau, les opérateurs de réseau 5G seront en mesure de fournir des capacités de connectivité spécifiques afin de prendre en charge ces différents cas d'utilisation. Chaque tranche de réseau (network slice) peut être dédiée à un tiers (c'est-à-dire tout acteur commercial qui n'est pas l'opérateur de réseau) et

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OLSSON, JOAKIM. "Method for gesture based authentication in physical access control." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209339.

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ASSA Abloy är den största globala leverantören av intelligenta lås och säkerhetslösningar. Företaget strävar ständigt efter att utveckla nya och innovativa lösningar för fysisk passerkontroll. Ett koncept som företaget ville undersöka riktade sig mot att göra det möjligt för användaren att enkelt låsa upp en dörr med hjälp av gester, vilket resulterar i en användarvänlig upplevelse. Tanken var att använda en wearable som en credential-enhet och identifiera användarens gester med sensorerna som tillhandahålls av denna. Gesten som används i denna avhandling var knackar, vilket innebär att använd

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Burdis, Keith Robert. "Distributed authentication for resource control." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1006512.

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This thesis examines distributed authentication in the process of controlling computing resources. We investigate user sign-on and two of the main authentication technologies that can be used to control a resource through authentication and providing additional security services. The problems with the existing sign-on scenario are that users have too much credential information to manage and are prompted for this information too often. Single Sign-On (SSO) is a viable solution to this problem if physical procedures are introduced to minimise the risks associated with its use. The Generic Secur

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Subils, Jean-Baptiste. "Authentication Via Multiple Associated Devices." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5778.

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This thesis presents a practical method of authentication utilizing multiple devices. The factors contributing to the practicality of the method are: the utilization of devices already commonly possessed by users and the amenability to being implemented on a wide variety of devices. The term “device” refers to anything able to perform cryptographic operations, store data, and communicate with another such device. In the method presented herein, multiple devices need to be associated with a single user to provide this user an identity in the system. A public key infrastructure is used to provid

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May, Brian 1975. "Scalable access control." Monash University, School of Computer Science and Software, 2001. http://arrow.monash.edu.au/hdl/1959.1/8043.

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Yildirim, Merve. "Security and usability in password authentication." Thesis, University of Sussex, 2017. http://sro.sussex.ac.uk/id/eprint/71873/.

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This thesis investigates the human-factor problems in password authentication and proposes some usable solutions to these problems by focusing on both forms of knowledge based authentication: textual passwords and graphical passwords. It includes a range of empirical studies to examine users' password-related behaviour and practices in authentication, and helps users to adopt secure password behaviour. This thesis consists of two parts. The first part focuses on traditional text-based passwords. Design flaws and usability issues of existing text-password mechanisms used by many organisations c

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Shen, Ziyi. "Red Door: Firewall Based Access Control in ROS." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1752358/.

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ROS is a set of computer operating system framework designed for robot software development, and Red Door, a lightweight software firewall that serves the ROS, is intended to strengthen its security. ROS has many flaws in security, such as clear text transmission of data, no authentication mechanism, etc. Red Door can achieve identity verification and access control policy with a small performance loss, all without modifying the ROS source code, to ensure the availability and authentication of ROS applications to the greatest extent.

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Ceccato, Silvia. "Security in Global Navigation Satellite Systems: authentication, integrity protection and access control." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3425426.

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In the last decades the use of Global Navigation Satellite System (GNSS) positioning has spread through numerous commercial applications and permeated our daily life. Matching this growing interest for precise positioning worldwide, new systems have been designed and deployed, such as Galileo, the European GNSS. As these systems are relied upon in an ever growing number of safety critical applications, it is vital to devise protections and countermeasures against any threats that may target GNSS modules to harm underlying service. The potential economical advantage that derives from disruptin

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Looi, Mark H. "Authentication for applications in computer network environments using intelligent tokens." Thesis, Queensland University of Technology, 1995.

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Falkcrona, Jerry. "Role-based access control and single sign-on for Web services." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11224.

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<p>Nowadays, the need for sharing information between different systems in a secure manner is common, not only in the corporate world but also in the military world. This information often resides at different locations, creating a distributed system. In order to share information in a secure manner in a distributed system, credentials are often used to attain authorization.</p><p>This thesis examines how such a distributed system for sharing information can be realized, using the technology readily available today. Accounting to the results of this examination a basic system is implemented, a

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Venne, Jacob. "Tradeoffs in Protocol Designs for Collaborative Authentication." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6633.

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Authentication is a crucial tool used in access control mechanisms to verify a user’s identity. Collaborative Authentication (co-authentication) is a newly proposed authentication scheme designed to improve on traditional token authentication. Co-authentication works by using multiple user devices as tokens to collaborate in a challenge and authenticate a user request on single device. This thesis adds two contributions to the co-authentication project. First, a detailed survey of applications that are suitable for adopting co-authentication is presented. Second, an analysis of tradeoffs betwe

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Yachouh, Marwan. "Re-authentication of Critical Operations." Thesis, Linköping University, Department of Electrical Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1174.

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<p>This is a study on the development of a re-authentication prototype. Re- authentication serves as a receipt for e.g. system administrators that authorise them to carry out a critical operation in a system that already is protected by a security architecture. A critical operation is a kind of operation that can cause serious damage to a network node or a set of network nodes, if it is done without one giving it a second thought. The purpose is to prevent mistakes and secure the users’ audit trail. </p><p>The main task is to propose and implement a re-authentication prototype, that is to enab

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Cavdar, Davut. "A Certificate Based Authentication Control Model Using Smart Mobile Devices For Ubiquitous Computing Environments." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613682/index.pdf.

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In this thesis work, a certificate based authentication model supported by mobile devices is provided for ubiquitous computing environments. The model primarily aims to create an infrastructure for controlling and regulating access requests through mobile devices to local resources and services. The model also allows users from different domains to use local resources and services within the scope of agreements between domains. In addition to conceptual description of the model, a real prototype implementation is developed and successful application of the model is demonstrated. Within the pro

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Yao, Li. "A structured approach to electronic authentication assurance level derivation." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/a-structured-approach-to-electronic-authentication-assurance-level-derivation(c6a98938-f3e1-4727-9eac-c2cb0480a3df).html.

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We envisage a fine-grained access control solution that allows a user's access privilege to be linked to the confidence level (hereafter referred to as the assurance level) in identifying the user. Such a solution would be particularly attractive to a large-scale distributed resource sharing environment, where resources are likely to be more diversified and may have varying levels of sensitivity and resource providers may wish to adjust security protection levels to adapt to resource sensitivity levels or risk levels in the underlying environment. However, existing electronic authentication sy

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Cetin, Cagri. "Design, Testing and Implementation of a New Authentication Method Using Multiple Devices." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5660.

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Authentication protocols are very common mechanisms to confirm the legitimacy of someone’s or something’s identity in digital and physical systems. This thesis presents a new and robust authentication method based on users’ multiple devices. Due to the popularity of mobile devices, users are becoming more likely to have more than one device (e.g., smartwatch, smartphone, laptop, tablet, smart-car, smart-ring, etc.). The authentication system presented here takes advantage of these multiple devices to implement authentication mechanisms. In particular, the system requires the devices to collabo

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Bursum, Kim. "Initial Comparative Empirical Usability Testing for the Collaborative Authentication System." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6614.

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The Collaborative Authentication (co-authentication) system is an authentication system that relies on some or all members of a pre-registered set of secure hardware tokens being concurrently present to an authentication server at the moment of authentication. Previous researchers have compared various embodiments of the co-authentication system to each other including using Quick Response (QR) codes/cellphone cameras and Near Field Communication (NFC) between tokens. This thesis concerns the initial design and implementation of empirical comparative testing mechanisms between one embodiment o

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Akmayeva, Galina. "Impact of access control and copyright in e-learning from user's perspective in the United Kingdom." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/16867.

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The widespread adoption of E-Learning has largely been driven by the recommendations of educational technologists seeking to convey the benefits of E-Learning as a valuable accessory to teaching and possible solution for distance-based education. Research in the E-Learning domain has mainly focused on providing and delivering content andinfrastructure. Security issues are usually not taken as central concern in most implementations either because systems are usually deployed in controlled environments, or because they take the one-to-one tutoring approach, not requiring strict security measure

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Merritt, John W. "Distributed file systems in an authentication system." Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/9938.

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Zhang, Zhen. "Delivering mobile services to mobile users in open networks: Quality of service, authentication and trust-based access control." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27745.

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This thesis describes scenarios in which a mobile user needs various services, such as Internet telephony, secure printing and online data services in a number of places. From these scenarios we summarize the requirements for quality of service control, service discovery, user authentication and authorization, service access control, and user privacy. In order to implement a prototype to support service discovery, we studied different technologies including Bluetooth, Jini, and Web Services. SDPtool from BlueZ was chosen to limit the search range within the user's local area while using minima

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Yu, Jiahui. "Physical-layer Security Based Authentication and Key Generation for Seamless IoT Communications." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1576178965071975.

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Tellini, Niklas, and Fredrik Vargas. "Two-Factor Authentication : Selecting and implementing a two-factor authentication method for a digital assessment platform." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208097.

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Two-Factor Authentication (2FA) is a two-step verification process that aims to provide an additional layer of security by requiring the user to authenticate himself/herself using a secondary means (ownership factor or inheritance factor). Without the use of 2FA, an attacker could gain access to a person’s devices or accounts solely by knowing the victim’s password, while with 2FA knowing only this password is insufficient to pass the authentication check. In this project, we analyze different methods in which 2FA could be implemented by a Digital Assessment Platform. These platforms allow tes

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Hirai, Tatsuya. "A Study on Access Control Mechanism in Storage Devices for Audiovisual Contents." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/216162.

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Pokorný, Lukáš. "Multiplatformní autentizační systém." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220411.

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This thesis describes the design of a multiplatform authentication system that enables user authentication by using a wide variety of authentication tokens. The theoretical part is devoted to an overview of authentication interfaces with focus on modern methods of verification. There is also an overview of authentication schemes. The practical part gives requirements for an authentication terminal and sets a specific hardware structure, including the specification of individual functional blocks. The implementation of the software logic uses Java and JavaScript programming languages. Attention

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Richter, Lars. "Untersuchung und Bewertung von Netzzugangssteuerungen auf Basis des Standards 802.1x (Port-Based Network Access Control)." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11719676.

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Chance, Christopher P. "Designing and implementing a network authentication service for providing a secure communication channel." Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/9903.

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Ležák, Petr. "Testovací implementace protokolu ACP." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219478.

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In general this master’s thesis deals with access control methods and their individual modules and in particular with authentication of supplicants. There are listed authentication methods useful in the implementation of the ACP protocol. ACP protocol is also discussed including possibilities and uses. ACP message format is described in detail with AVP format and types. The transaction mechanism is also mentioned here. The main part of the thesis is focused on software design for protocol testing. Possibilities of the testing are discussed and test scenarios are suggested. Consequently, requir

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Mensah, Francis. "Framework to Implement Authentication, Authorization and Secure Communications in a Multiuser Collaborative CAx Environment." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4314.

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Computer Aided Design (CAD) applications have historically been based on a single user per application architecture. Although this architecture is still popular to date, it does have several drawbacks. First of all the single user CAD architecture inhibits a concurrent engineering design process where several designers can work on the same model simultaneously. This limitation introduces time inefficiency especially when a project involves geographically dispersed designers. A solution to these drawbacks could be a transition from the traditional single user CAD architecture to a multiuser col

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Al-Ibrahim, Mohamed Hussain. "Source authentication in group communication." Thesis, Electronic version, 2005. http://hdl.handle.net/1959.14/549.

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Title from screen page; viewed 10 Oct 2005.<br>Thesis (PhD)--Macquarie University, Division of Information and Communication Sciences, Dept. of Computing, 2004.<br>Bibliography: leaves 163-175.<br>Introduction -- Cryptographic essentials -- Multicast: structure and security -- Authentication of multicast streams -- Authentication of concast communication -- Authentication of transit flows -- One-time signatures for authenticating group communication -- Authentication of anycast communication -- Authentication of joining operation - Conclusion and future directions.<br>Electronic publication; f

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Worm, Stefan. "Administration of Access Rights in Web Applications." Thesis, Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501436.

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This work deals with the problem to find and rate a solution how to administrate access rights in web based applications that are flexible and offer a fine-grained allocation of rights. In particular the program phpGACL is analyzed and integrated into an example application to prove the feasibility of this system in principle<br>Diese Arbeit beschäftigt sich mit der Lösungsfindung und -bewertung des Problems, Zugriffsrechte webbasierter Anwendungen flexibel zu administrieren und eine möglichst feinkörnige Rechtevergabe zu erlauben. Insbesondere das Programm phpGACL wird analysiert und in eine

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Tran, Florén Simon. "Implementation and Analysis of Authentication and Authorization Methods in a Microservice Architecture : A Comparison Between Microservice Security Design Patterns for Authentication and Authorization Flows." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301620.

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Microservices have emerged as an attractive alternative to more classical monolithic software application architectures. Microservices provides many benefits that help with code base comprehension, deployability, testability, and scalability. As the Information technology (IT) industry has grown ever larger, it makes sense for the technology giants to adopt the microservice architecture to make use of these benefits. However, with new software solutions come new security vulnerabilities, especially when the technology is new and vulnerabilities are yet to be fully mapped out. Authentication an

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Ghaffari, Fariba. "A novel blockchain-based architecture for mobile network operators : Beyond 5G." Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAS009.

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Alors que l'architecture centralisée et autonome existante des opérateurs de réseaux mobiles (ORM) fournit une connectivité à des milliards d'utilisateurs, ils souffrent d'un manque de mécanismes techniques pour améliorer la collaboration entre les MNO et les autres fournisseurs.Cela a des impacts sur les coûts de mutualisation, ainsi que sur la consommation d'énergie et l'impact environnemental. Cela peut également empêcher l'avènement de modèles commerciaux plus collaboratifs avec d'autres fournisseurs ou même avec des clients. De plus, la complexité des réseaux au-delà de la 5G peut dépasse

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Miles, Shaun Graeme. "An investigation of issues of privacy, anonymity and multi-factor authentication in an open environment." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1006653.

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This thesis performs an investigation into issues concerning the broad area ofIdentity and Access Management, with a focus on open environments. Through literature research the issues of privacy, anonymity and access control are identified. The issue of privacy is an inherent problem due to the nature of the digital network environment. Information can be duplicated and modified regardless of the wishes and intentions ofthe owner of that information unless proper measures are taken to secure the environment. Once information is published or divulged on the network, there is very little way of

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Bharath, Tati. "A framework to implement delegation in offline PACS : A strategy to restrict user’s path." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127851.

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Physical access control systems (PACS) deal with the security of the availability of resources. They work as an alternative to traditional manual security access control. Access control has two variants, the logical which deals with computer environments and the physical which deals with the physical entry into a property or warehouses. However, offline physical access control systems cannot enforce the user’s path making it unsuitable for use in classified areas, such as places where the public is restricted. Therefore, offline PACS need a framework that can delegate the authority to enforce

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Luo, Ying. "Efficient Anonymous Biometric Matching in Privacy-Aware Environments." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/46.

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Video surveillance is an important tool used in security and environmental monitoring, however, the widespread deployment of surveillance cameras has raised serious privacy concerns. Many privacy-enhancing schemes have been recently proposed to automatically redact images of selected individuals in the surveillance video for protection. To identify these individuals for protection, the most reliable approach is to use biometric signals as they are immutable and highly discriminative. If misused, these characteristics of biometrics can seriously defeat the goal of privacy protection. In this di

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Bouazzouni, Mohamed Amine. "Processus sécurisés de dématérialisation de cartes sans contact." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19488/1/BOUAZZOUNI_MohamedAmine.pdf.

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Au fil des années, la technologie sans contact NFC s'est imposée dans notre quotidien au travers des différents services proposés. Les cas d'utilisation sont nombreux allant des cartes de fidélité, des cartes de transport, des cartes de paiement sans contact jusqu'aux cartes de contrôle d'accès. Cependant, les premières générations des cartes NFC ont une sécurité minimale reposant sur l'hypothèse de leur non-clonabilité. De multiples vulnérabilités ont été découvertes et leur exploitation a permis des copies frauduleuses. Afin de remédier à ces vulnérabilités, une nouvelle génération de cartes

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Li, Jun. "Towards a localisation of trust framework for pervasive environments." Thesis, University of Hertfordshire, 2008. http://hdl.handle.net/2299/2612.

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Pervasive computing envisions an environment in which we are surrounded by many embedded computer devices. The existence of those networked devices provides us with a mobile, spontaneous and dynamic way to access various resources provided by different (security policy) domains. In recent years, we have witnessed the evolutionary development of numerous multiple domain applications. One of the richest examples is pervasive environments. Typi- cally, the conventional approach to secure access over multiple domains is to implement a unique trusted infrastructure, extending local identity or capa

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Foltýn, Petr. "Návrh a realizace jednotek modulárního přístupového systému." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229208.

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Yu, Ping. "Direct Online/Offline Digital Signature Schemes." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9717/.

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Online/offline signature schemes are useful in many situations, and two such scenarios are considered in this dissertation: bursty server authentication and embedded device authentication. In this dissertation, new techniques for online/offline signing are introduced, those are applied in a variety of ways for creating online/offline signature schemes, and five different online/offline signature schemes that are proved secure under a variety of models and assumptions are proposed. Two of the proposed five schemes have the best offline or best online performance of any currently known technique

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Butun, Ismail. "Prevention and Detection of Intrusions in Wireless Sensor Networks." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4449.

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Wireless Sensor Networks (WSNs) continue to grow as one of the most exciting and challenging research areas of engineering. They are characterized by severely constrained computational and energy resources and also restricted by the ad-hoc network operational environment. They pose unique challenges, due to limited power supplies, low transmission bandwidth, small memory sizes and limited energy. Therefore, security techniques used in traditional networks cannot be directly adopted. So, new ideas and approaches are needed, in order to increase the overall security of the network. Security appl

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He, Yijun, and 何毅俊. "Protecting security in cloud and distributed environments." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49617631.

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Encryption helps to ensure that information within a session is not compromised. Authentication and access control measures ensure legitimate and appropriate access to information, and prevent inappropriate access to such resources. While encryption, authentication and access control each has its own responsibility in securing a communication session, a combination of these three mechanisms can provide much better protection for information. This thesis addresses encryption, authentication and access control related problems in cloud and distributed environments, since these problems are ver

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Risterucci, Gabriel. "Mécanismes et outils pour sécurisation de systèmes à accès distants : application aux systèmes de gestion électronique de documents." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4010/document.

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Cette thèse a pour objet l'amélioration de la sécurité de systèmes à accès distant par l'utilisation d'outils cryptographiques. Elle s'applique en particulier aux applications de gestion de documents numériques pour leurs problématiques de communication, d'authentification et de gestion de droits. Contrairement aux approches classiques consistant à utiliser des moyens de protections ponctuels, nous proposons ici un ensemble d'outils conçu pour collaborer afin de renforcer la sécurité du système. La sécurisation des communications est réalisée grâce à la conception d'un protocole de communicati

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Xu, Cheng. "Authenticated query processing in the cloud." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/620.

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With recent advances in data-as-a-service (DaaS) and cloud computing, outsourcing data to the cloud has become a common practice. In a typical scenario, the data owner (DO) outsources the data and delegates the query processing service to a service provider (SP). However, as the SP is often an untrusted third party, the integrity of the query results cannot be guaranteed and is thus imperative to be authenticated. To tackle this issue, a typical approach is letting the SP provide a cryptographic proof, which can be used to verify the soundness and completeness of the query results by the clien

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Jedlička, Zdeněk. "Přístupový systém založený na protokolu ACP." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219429.

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Work is focused on the possibility of implementation of ACP into applications for mobile devices using the Android operating system ogether with the implementation of this Protocol in the hardware device. Communication is based on standard TCP / IP and UDP protocol.

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Vale, JoÃo Carlos Sousa do. "MYGSI-uma proposta de seguranÃa para grades peer-to-peer." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2072.

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nÃo hÃ<br>MyGSI Ã uma proposta de arquitetura de seguranÃa para ambientes de grades peer-to-peer. Utilizando mecanismos de autenticaÃÃo, controle de acesso e delegaÃÃo de direitos de acesso, MyGSI permite a troca de informaÃÃes e o compartilhamento de recursos de forma segura atravÃs de trÃs mÃdulos: MyAuth, MyAC e MyDel. MyAuth Ã o mÃdulo responsÃvel pela autenticaÃÃo utilizando a infra-estrutura de chaves pÃblicas. MyAC Ã o mÃdulo responsÃvel pelo controle de acesso e permite o gerenciamento descentralizado de polÃticas de controle de acesso. MyDel Ã o mÃdulo responsÃvel pelo processo de de

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Ribeiro, Matheus Antônio Corrêa. "Gerenciamento e autenticação de identidades digitais usando feições faciais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/15740.

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Em nossa vida diária, são utilizadas identidades digitais (IDDs) para acessar contas de e-mail, bancos e lojas virtuais, locais restritos, computadores compartilhados, e outros. Garantir que apenas usuários autorizados tenham o acesso permitido é um aspecto fundamental no desenvolvimento destas aplicações. Atualmente, os métodos de controle de acesso simples como senhas ou números de identificação pessoal não devem ser considerados suficientemente seguros, já que um impostor pode conseguir estas informações sem o conhecimento do usuário. Ainda, no caso de utilização de dispositivos físicos com

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Fiorese, Mauricio. "Uma Proposta de autenticação de usuários para ensino a distância." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2000. http://hdl.handle.net/10183/80127.

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Este trabalho investiga diferentes estratégias e técnicas de autenticação de usuários visando determinar quais podem ser integradas em um ambiente de educação a distância. Diversas soluções de autenticação existentes no mercado foram analisadas para se determinar as mais adequadas. Buscou-se as soluções consideradas factíveis de utilização, seja pelo custo ou quantidade de equipamentos extras envolvidos, seja pela simplicidade operacional ou pelo grau de certeza das medidas efetuadas. A partir desta análise foi delineado um modelo de autenticação que integra várias técnicas de autenticação a f

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Petrauskienė, Rasa. "Prieigos prie bevielio tinklo resursų valdymas panaudojant vietos informaciją." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110901_140213-99282.

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Tobulėjant mobilioms technologijoms vietos informacija tapo svarbi prieigos valdymui. Šiame darbe analizuojamos vietos informacijos derinimo su autentifikacijos ir prieigos valdymo mechanizmais galimybės. Darbe išskirti vietos informacijos įvedimo į autentifikacijos, prieigos valdymo ir atskaitomybės procesus privalumai. Pristatomas vietos informacija paremtas prieigos prie tinklo resursų valdymo modelis, kuris leidžia padidinti teisingo autentifikavimo tikimybę bei išplėsti prieigos valdymo galimybes. Suprojektuota prieigos prie bevielio tinklo valdymo sistema, pritaikyta veikti kelių aukštų

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Villar, Melissa Vieira Fernandes. "Modelo de autenticaÃÃo e autorizaÃÃo baseado em certificados de atributos para controle de acesso de aplicaÃÃes em ambiente distribuÃdo utilizando redes de petri coloridas." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2047.

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Devido Ãs crescentes ameaÃas inerentes aos sistemas de informaÃÃo, o uso de mecanismos de autenticaÃÃo e autorizaÃÃo baseados em identificador de usuÃrio e senha nÃo Ã mais suficiente para garantir a seguranÃa das informaÃÃes. Este trabalho propÃe um novo modelo de autenticaÃÃo e autorizaÃÃo para controle de acesso de aplicaÃÃes distribuÃdas, baseado em resumos criptogrÃficos e certificados de atributos. Os resumos criptogrÃficos sÃo utilizados no processo de autenticaÃÃo da aplicaÃÃo, enquanto os certificados de atributos especificam privilÃgios e outras informaÃÃes de autorizaÃÃo associadas

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