Publications de Aikaterini Mitrokotsa

Publications associées (16)

Expected Loss Analysis for Authentication in Constrained Channels

Serge Vaudenay, Christos Dimitrakakis, Aikaterini Mitrokotsa

We derive bounds on the expected loss for authentication protocols in channels which are constrained due to noisy conditions and communication costs. This is motivated by a number of authentication protocols, where at least some part of the authentication ...

IOS Press2015

A Note on a Privacy-Preserving Distance-Bounding Protocol

Aikaterini Mitrokotsa, Jean-Philippe Aumasson

Distance bounding protocols enable a device to establish an upper bound on the physical distance to a communication partner so as to prevent location spoofing, as exploited by relay attacks. Recently, Rasmussen and Cˇapkun (ACM-CCS’08) observed that these ...

Springer2011

Practical and Provably Secure Distance-Bounding

Serge Vaudenay, Aikaterini Mitrokotsa

From contactless payments to remote car unlocking, many applications are vulnerable to relay attacks. Distance bounding protocols are the main practical countermeasure against these attacks. In this paper, we present a formal analysis of SKI, which recentl ...

IOS Press2015

Location leakage in distance bounding: Why location privacy does not work

Serge Vaudenay, Aikaterini Mitrokotsa

In many cases, we can only have access to a service by proving we are sufficiently close to a particular location (e.g. in automobile or building access control). In these cases, proximity can be guaranteed through signal attenuation. However, by using add ...

Elsevier2014

Intrusion Detection in MANET Using Classification Algorithms: The Effects of Cost and Model Selection

Christos Dimitrakakis, Aikaterini Mitrokotsa

Intrusion detection is frequently used as a second line of defense in Mobile Ad-hoc Networks (MANETs). In this paper we examine how to properly use classification methods in intrusion detection for MANETs. In order to do so we evaluate five supervised clas ...

Elsevier2013

Practical & Provably Secure Distance-Bounding

Serge Vaudenay, Aikaterini Mitrokotsa

From contactless payments to remote car unlocking, many applications are vulnerable to relay attacks. Distance bounding protocols are the main practical countermeasure against these attacks. At FSE 2013, we presented SKI as the first family of provably sec ...

2013

The Bussard-Bagga and Other Distance-Bounding Protocols under Attacks

Iosif-Daniel Spulber, Serge Vaudenay, Aikaterini Mitrokotsa, Asli Bay, Ioana Cristina Carlson

The communication between an honest prover and an honest verifier can be intercepted by a malicious man-in-the-middle (MiM), without the legitimate interlocutors noticing the intrusion. The attacker can simply relay messages from one party to another, even ...

Springer2012

On Selecting the Nonce Length in Distance-Bounding Protocols

Serge Vaudenay, Christos Dimitrakakis, Aikaterini Mitrokotsa

Distance-bounding protocols form a family of challenge-response authentication protocols that have been introduced to thwart relay attacks. They enable a verifier to authenticate and to establish an upper bound on the physical distance to an untrusted prov ...

Oxford University Press2013

Evaluation of classification algorithms for intrusion detection in MANETs

Aikaterini Mitrokotsa

Mobile Ad hoc Networks (MANETs) are wireless networks without fixed infrastructure based on the cooperation of independent mobile nodes. The proliferation of these networks and their use in critical scenarios (like battlefield communications or vehicular n ...

Elsevier Science Bv2012

Statistical Decision Making for Authentication and Intrusion Detection

Christos Dimitrakakis, Aikaterini Mitrokotsa

User authentication and intrusion detection differ from standard classification problems in that while we have data generated from legitimate users, impostor or intrusion data is scarce or non-existent. We review existing techniques for dealing with this p ...

2009

On the Pseudorandom Function Assumption in (Secure) Distance-Bounding Protocols

Serge Vaudenay, Aikaterini Mitrokotsa, Ioana Cristina Carlson

In this paper, we show that many formal and informal security results on distance-bounding (DB) protocols are incorrect/incomplete. We identify that this inadequacy stems from the fact that the pseudorandom function (PRF) assumption alone, invoked in many ...

Springer2012

Expected loss bounds for authentication in constrained channels

Serge Vaudenay, Christos Dimitrakakis, Aikaterini Mitrokotsa

We derive bounds on the expected loss for authenti-cation protocols in channels which are constrained due to noisyconditions and communication costs. This is motivated by anumber of authentication protocols, where at least some partof the authentication is ...

Ieee2012

Guest Editors' Introduction: Special Section on Learning, Games and Security

Christos Dimitrakakis, Aikaterini Mitrokotsa

2012

User-driven RFID applications and challenges

Aikaterini Mitrokotsa

Springer-Verlag2012

Secure & Lightweight Distance-Bounding

Serge Vaudenay, Aikaterini Mitrokotsa, Ioana Cristina Carlson

Distance-bounding is a practical solution to be used in security-sensitive contexts, mainly to prevent relay attacks. The main challenge when designing such protocols is maintaining their inexpensive cryptographic nature, whilst being able to protect again ...

2013

RFID Technology, Systems, and Applications

Aikaterini Mitrokotsa

Elsevier2011