13 research outputs found
ICT Systems Security and Privacy Protection: 29th IFIP TC 11 International Conference, SEC 2014 Marrakech, Morocco, June 2-4, 2014
International audienceBook Front Matter of AICT 42
Open source intelligence, open social intelligence and privacy by design
PonĂšncia presentada a European Conference on Social Intelligence (ECSI-2014)OSINT stands for Open Source Intelligence, (O)SI for (Open) Social Intelligence, PbD for Privacy by Design. The CAPER project has built an OSINT solution oriented to the prevention of organized crime. How to balance freedom and security? This position paper describes a way to embed the legal and ethical issues raised by the General Data Reform Package (GDRP) in Europe into this kind of surveillance platforms. It focuses on the indirect strategy to flesh out Privacy by Design principles (PbD) through Semantic Web Regulatory Models (SWRM). Institutional design, self-regulatory systems, and the possibility to build up a meta-level rule of law are discussed
Lower-Cost â-Private Information Retrieval
Private Information Retrieval (PIR), despite being well studied, is computationally costly and arduous to scale. We explore lower-cost relaxations of information-theoretic PIR, based on dummy queries, sparse vectors, and compositions with an anonymity system. We prove the security of each scheme using a flexible differentially private definition for private queries that can capture notions of imperfect privacy. We show that basic schemes are weak, but some of them can be made arbitrarily safe by composing them with large anonymity systems
Assessment of attribute-based credentials for privacy-preserving road traffic services in smart cities
Smart cities involve the provision of advanced services for road traffic users. Vehicular ad hoc networks (VANETs) are a promising communication technology in this regard. Preservation of privacy is crucial in these services to foster their acceptance. Previous approaches have mainly focused on PKI-based or ID-based cryptography. However, these works have not fully addressed the minimum information disclosure principle. Thus, questions such as how to prove that a driver is a neighbour of a given zone, without actually disclosing his identity or real address, remain unaddressed. A set of techniques, referred to as Attribute-Based Credentials (ABCs), have been proposed to address this need in traditional computation scenarios. In this paper, we explore the use of ABCs in the vehicular context. For this purpose, we focus on a set of use cases from European Telecommunications Standards Institute (ETSI) Basic Set of Applications, specially appropriate for the early development of smart cities. We assess which ABC techniques are suitable for this scenario, focusing on three representative ones—Idemix, U-Prove and VANET-updated Persiano systems. Our experimental results show that they are feasible in VANETs considering state-of-the-art technologies, and that Idemix is the most promising technique for most of the considered use cases.This work was supported by the MINECO grant TIN2013-46469-R (SPINY: Security and Privacy in the Internet of You); the CAM grant S2013/ICE-3095 (CIBERDINE: Cybersecurity, Data, and Risks) and by the MINECO grant TIN2016-79095-C2-2-R (SMOG-DEV - Security mechanisms for fog computing: advanced security for devices). Jose Maria de Fuentes and Lorena Gonzalez were also supported by the Programa de Ayudas para la Movilidad of Carlos III University of Madrid
Security and Privacy of IP-ICN Coexistence: A Comprehensive Survey
Internet usage has changed from its first design. Hence, the current Internet
must cope with some limitations, including performance degradation,
availability of IP addresses, and multiple security and privacy issues.
Nevertheless, to unsettle the current Internet's network layer i.e., Internet
Protocol with ICN is a challenging, expensive task. It also requires worldwide
coordination among Internet Service Providers , backbone, and Autonomous
Services. Additionally, history showed that technology changes e.g., from 3G to
4G, from IPv4 to IPv6 are not immediate, and usually, the replacement includes
a long coexistence period between the old and new technology. Similarly, we
believe that the process of replacement of the current Internet will surely
transition through the coexistence of IP and ICN. Although the tremendous
amount of security and privacy issues of the current Internet taught us the
importance of securely designing the architectures, only a few of the proposed
architectures place the security-by-design. Therefore, this article aims to
provide the first comprehensive Security and Privacy analysis of the
state-of-the-art coexistence architectures. Additionally, it yields a
horizontal comparison of security and privacy among three deployment approaches
of IP and ICN protocol i.e., overlay, underlay, and hybrid and a vertical
comparison among ten considered security and privacy features. As a result of
our analysis, emerges that most of the architectures utterly fail to provide
several SP features including data and traffic flow confidentiality,
availability and communication anonymity. We believe this article draws a
picture of the secure combination of current and future protocol stacks during
the coexistence phase that the Internet will definitely walk across
CCA Secure encryption supporting authorized equality test on ciphertexts in standard model and its applications
Singapore National Research Foundatio
Continuous User Authentication Using Multi-Modal Biometrics
It is commonly acknowledged that mobile devices now form an integral part of an individualâs everyday life. The modern mobile handheld devices are capable to provide a wide range of services and applications over multiple networks. With the increasing capability and accessibility, they introduce additional demands in term of security.
This thesis explores the need for authentication on mobile devices and proposes a novel mechanism to improve the current techniques. The research begins with an intensive review of mobile technologies and the current security challenges that mobile devices experience to illustrate the imperative of authentication on mobile devices. The research then highlights the existing authentication mechanism and a wide range of weakness. To this end, biometric approaches are identified as an appropriate solution an opportunity for security to be maintained beyond point-of-entry. Indeed, by utilising behaviour biometric techniques, the authentication mechanism can be performed in a continuous and transparent fashion.
This research investigated three behavioural biometric techniques based on SMS texting activities and messages, looking to apply these techniques as a multi-modal biometric authentication method for mobile devices. The results showed that linguistic profiling; keystroke dynamics and behaviour profiling can be used to discriminate users with overall Equal Error Rates (EER) 12.8%, 20.8% and 9.2% respectively. By using a combination of biometrics, the results showed clearly that the classification performance is better than using single biometric technique achieving EER 3.3%. Based on these findings, a novel architecture of multi-modal biometric authentication on mobile devices is proposed. The framework is able to provide a robust, continuous and transparent authentication in standalone and server-client modes regardless of mobile hardware configuration. The framework is able to continuously maintain the security status of the devices. With a high level of security status, users are permitted to access sensitive services and data. On the other hand, with the low level of security, users are required to re-authenticate before accessing sensitive service or data