ViotSOC: Controlling Access to Dynamically Virtualized IoT Services using Service Object Capability

Virtualization of Internet of Things(IoT) is a concept of dynamically building customized high-level IoT services which rely on the real time data streams from low-level physical IoT sensors. Security in IoT virtualization is challenging, because with the growing number of available (building block) services, the number of personalizable virtual services grows exponentially. This paper proposes Service Object Capability(SOC) ticket system, a decentralized access control mechanism between servers and clients to effi- ciently authenticate and authorize each other without using public key cryptography. SOC supports decentralized partial delegation of capabilities specified in each server/- client ticket. Unlike PKI certificates, SOC’s authentication time and handshake packet overhead stays constant regardless of each capability’s delegation hop distance from the root delegator. The paper compares SOC’s security bene- fits with Kerberos and the experimental results show SOC’s authentication incurs significantly less time packet overhead compared against those from other mechanisms based on RSA-PKI and ECC-PKI algorithms. SOC is as secure as, and more efficient and suitable for IoT environments, than existing PKIs and Kerberos

Smart cards: State-of-the-art to future directions

The evolution of smart card technology provides an interesting case study of the relationship and interactions between security and business requirements. This paper maps out the milestones for smart card technology, discussing at each step the opportunities and challenges. The paper reviews recently proposed innovative ownership/management models and the security challenges associated with them. The paper concludes with a discussion of possible future directions for the technology, and the challenges these present

Challenges of Multi-Factor Authentication for Securing Advanced IoT (A-IoT) Applications

The unprecedented proliferation of smart devices together with novel communication, computing, and control technologies have paved the way for the Advanced Internet of Things~(A-IoT). This development involves new categories of capable devices, such as high-end wearables, smart vehicles, and consumer drones aiming to enable efficient and collaborative utilization within the Smart City paradigm. While massive deployments of these objects may enrich people's lives, unauthorized access to the said equipment is potentially dangerous. Hence, highly-secure human authentication mechanisms have to be designed. At the same time, human beings desire comfortable interaction with their owned devices on a daily basis, thus demanding the authentication procedures to be seamless and user-friendly, mindful of the contemporary urban dynamics. In response to these unique challenges, this work advocates for the adoption of multi-factor authentication for A-IoT, such that multiple heterogeneous methods - both well-established and emerging - are combined intelligently to grant or deny access reliably. We thus discuss the pros and cons of various solutions as well as introduce tools to combine the authentication factors, with an emphasis on challenging Smart City environments. We finally outline the open questions to shape future research efforts in this emerging field.Comment: 7 pages, 4 figures, 2 tables. The work has been accepted for publication in IEEE Network, 2019. Copyright may be transferred without notice, after which this version may no longer be accessibl

Managing Access to Service Providers in Federated Identity Environments: A Case Study in a Cloud Storage Service

© 2015 IEEE. Currently the diversity of services, which are adhering to Identity Federation, has raised new challenges in the area. Increasingly, service providers need to control the access to their resources by users from the federation as, even though the user is authenticated by the federation, its access to resources cannot be taken for granted. Each Service Provider (SP) of a federation implements their own access control mechanism. Moreover, SPs might need to allow different access control granularity. For instance, all users from a particular Identity Provider (IdP) may access the resources due to some financial agreement. On the other hand, it might be the case that only specific users, or groups of users, have access to the resources. This paper proposes a solution to this problem through a hierarchical authorization system. Our approach, which can be customized to different SPs, allows the SP administrator to manage which IdPs, or users, have access to the provided resources. In order to demonstrate the feasibility of our approach, we present a case study in the context of a cloud storage solution

Permissão para partilha seletiva em ambientes IoT

The increasing use of smart devices for monitoring spaces has caused an increase in concerns about the privacy of users of these spaces. Given this problem, the legislation on the right to privacy has been worked to ensure that the existing laws on this subject are sufficiently comprehensive to preserve the privacy of users. In this way, research on this topic evolves in the sense of creating systems that ensure compliance with these laws, that is, increase transparency in the treatment of user data. In the context of this dissertation, a demonstrator-based strategy is presented to provide users control over their stored data during the temporary use of an intelligent environment. In addition, this strategy includes transparency guarantees, highlights the right to forgetting, provides the ability to consent and proof of that consent. A strategy for privacy control in such environments is also mentioned in this paper. This dissertation was developed within the CASSIOPEIA project where the case study focuses on the SmartBnB problem where a user rents a smart home for a limited time. This paper presents the developed system that ensures the user’s privacy and control over their data.O uso crescente de dispositivos inteligentes para monitorização de espaços tem provocado um aumento das preocupações sobre a privacidade dos utilizadores destes espaços. Face a este problema, a legislação sobre o direito à privacidade tem sido trabalhada de forma a garantir que as leis existentes sobre este tema são suficientemente abrangentes para preservar a privacidade dos utilizadores. Desta forma, a investigação neste tópico evolui no sentido de criar sistemas que garantam o cumprimento destas leis, ou seja aumentam a transparência no tratamentos dos dados dos utilizadores. No contexto desta dissertação, é apresentada uma estratégia baseado num demonstrador para fornecer um controlo ao utilizador sobre os seus dados armazenados durante a utilização temporária de um ambiente inteligente. Para além disso, esta estratégia inclui garantias de transparência, evidencia o direito ao esquecimento, fornece a capacidade de consentimento e prova desse consentimento. É também mencionada neste documento uma estratégia para um controlo de privacidade neste tipo de ambientes. Esta dissertação foi desenvolvida no âmbito do projeto CASSIOPEIA onde o caso de estudo se foca no SmartBnB problem onde um utilizador arrenda uma casa inteligente durante um tempo limitado. Este documento apresenta o sistema desenvolvido que garante a privacidade e controlo do utilizador sobre os seus próprios dados.This work is partially funded by NGI Trust, with number 3.85, Pro-ject CASSIOPEIA.Mestrado em Engenharia de Computadores e Telemátic