Panagiotis Papadimitratos

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Wireless networking relies on a fundamental building block, neighbor discovery (ND). The nature of wireless communications, however, makes attacks against ND easy: An adversary can simply replay or relay (wormhole) packets across the network and mislead di ...

Wireless communication enables a broad spectrum of applications, ranging from commodity to tactical systems. Neighbor discovery (ND), that is, determining which devices are within direct radio communication, is a building block of network protocols and app ...

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 ...

Report on the ``Secure Vehicular Communications: Results and Challenges Ahead'' Workshop ...

Realistic simulation is a necessary tool for the proper evaluation of newly developed protocols for Vehicular Ad Hoc Networks (VANETs). Several recent efforts focus on achieving this goal. Yet, to this date, none of the proposed solutions fulfill all the r ...

Secure routing protocols for mobile ad hoc networks have been developed recently, yet, it has been unclear what are the properties they achieve, as a formal analysis of these protocols is mostly lacking. In this paper, we are concerned with this problem, h ...

Wireless Sensor Networks (WSNs) rely on in-network aggregation for efficiency, however, this comes at a price: A single adversary can severely influence the outcome by contributing an arbitrary partial aggregate value. Secure in-network aggregation can det ...

We demonstrate that an interferer with malicious intentions can significantly degrade the performance of impulse radio (IR) ranging. The cicada attack we have developed can decrease the distance (degradation of service) measured by ranging algorithms desig ...

We argue that the traditional notion of trust as a relation among entities, while useful, becomes insu±cient in ephemeral ad hoc networks. In this paper, we address the challenge of extending the traditional notion of trust to data-centric trust, that is, ...

Pervasive computing systems will likely be deployed in the near future, with the proliferation of wireless devices and the emergence of ad hoc networking as key enablers. Coping with mobility and the volatility of wireless communications in such systems is ...

Wireless sensor networks (WSNs) can be a valuable decision- support tool for farmers. This motivated our deployment of a WSN system to support rain-fed agriculture in India. We defined promising use cases and resolved technical challenges throughout a two- ...

Vehicular Ad Hoc Networks (VANETs) are a peculiar subclass of mobile ad hoc networks that raise a number of technical challenges, notably from the point of view of their mobility models. In this paper, we provide a thorough analysis of the connectivity of ...

Public key cryptography can introduce significant processing delays in vehicular communication platforms. This can lead to serious performance issues, especially in the case of multi-hop Inter-Vehicle Communication. In this paper we propose Adaptive Messag ...

Inter-vehicle communication is regarded as one of the major applications of mobile ad hoc networks (MANETs). In these so called vehicular ad hoc networks (VANETs) security and privacy are crucial factors for successful deployment. In a scenario, where each ...

Panagiotis Papadimitratos

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A Practical Secure Neighbor Verification Protocol for Wireless Sensor Networks

Secure Neighbor Discovery in Wireless Networks: Formal Investigation of Possibility

Architecture for Secure and Private Vehicular Communications

Report on the "Secure Vehicular Communications: Results and Challenges Ahead" Workshop

TraNS: Realistic Joint Traffic and Network Simulator for VANETs

How to Specify and How to Prove Correctness of Secure Routing Protocols for MANET

Efficient and Robust Secure Aggregation for Sensor Networks

The Cicada Attack: Degradation and Denial of Service in IR Ranging

On Data-Centric Trust Establishment in Ephemeral Ad Hoc Networks

Secure Neighborhood Discovery: A Fundamental Element for Mobile Ad Hoc Networking

Wireless Sensor Networking for Rain-fed Farming Decision Support

VANET Connectivity Analysis

Adaptive Message Authentication for Vehicular Networks

Secure vehicular communication systems: implementation, performance, and research challenges

Impact of Pseudonym Changes on Geographic Routing in VANETs

Secure vehicular communication systems: design and architecture