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Enhancing Privacy Protection

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Privacy-Preserving Multi-agent Constraint Satisfaction

Boi Faltings, Thomas Léauté

Constraint satisfaction has been a very successful paradigm for solving problems such as resource allocation and planning. Many of these problems pose themselves in a context involving multiple agents, and protecting privacy of information among them is of ...

IEEE Computer Society Press2009

On Privacy Losses in the Trusted Agent Model (Abstract)

Serge Vaudenay

Tamper-proof devices are pretty powerful. They typically make security applications simpler (provided that the tamper-proof assumption is not violated). For application requiring privacy, we observe that some properties may become harder (if possible at al ...

2009

The Extended Access Control for Machine Readable Travel Documents

Serge Vaudenay, Rafik Chaabouni

Machine Readable travel documents have been rapidly put in place since 2004. The initial standard was made by the ICAO and it has been quickly followed by the Extended Access Control (EAC). In this paper we discuss about the evolution of these standards an ...

Gesellschaft für Informatik (GI)2009

H.264/AVC Video Scrambling for Privacy Protection

Touradj Ebrahimi, Frédéric Dufaux

In this paper, we address the problem of privacy in video surveillance systems. More specifically, we consider the case of H.264/AVC which is the state-of-the-art in video coding. We assume that Regions of Interest (ROI), containing privacy-sensitive infor ...

2008

Mutual Authentication in RFID: Security and Privacy

Serge Vaudenay, Radu-Ioan Paise

In RFID protocols, tags identify and authenticate themselves to readers. At Asiacrypt 2007, Vaudenay studied security and privacy models for these protocols. We extend this model to protocols which offer reader authentication to tags. Whenever corruption i ...

ACM Press2008

Privacy Guarantees through Distributed Constraint Satisfaction

Boi Faltings, Adrian Petcu, Thomas Léauté

The reason for using distributed constraint satisfaction algorithms is often to allow agents to find a solution while revealing as little as possible about their variables and constraints. So far, most algorithms for DisCSP do not guarantee privacy of this ...

2008

Privacy Guarantees through Distributed Constraint Satisfaction

Boi Faltings, Adrian Petcu, Thomas Léauté

Abstract. In Distributed Constraint Satisfaction Problems, agents often desire to ﬁnd a solution while revealing as little as possible about their variables and constraints. So far, most algorithms for DisCSP do not guarantee privacy of this information. T ...

2008

About Machine-Readable Travel Documents

Serge Vaudenay, Martin Vuagnoux, Jean Monnerat

Passports are now equipped with RFID chips that contain private information, biometric data, and a digital signature by issuing authorities. We review most of applicable security and privacy issues. We argue that the main privacy issue is not unauthorized ...

Springer2007

Architecture for Secure and Private Vehicular Communications

Jean-Pierre Hubaux, Panagiotis Papadimitratos, Maxime Raya, Levente Buttyan

The deployment of vehicular communication (VC) systems is strongly dependent on their security and privacy features. In this paper, we propose a security architecture for VC. The primary objectives of the architecture include the management of identities a ...

2007

On Privacy Models for RFID

Serge Vaudenay

We provide a formal model for identification schemes. Under this model, we give strong definitions for security and privacy. Our model captures the notion of a powerful adversary who can monitor all communications, trace tags within a limited period of tim ...

Springer-Verlag2007