Nikolaos Michalakis

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Many existing peer-to-peer content distribution networks (CDNs) such as Na Kika, CoralCDN, and CoDeeN are deployed on PlanetLab, a relatively trusted environment. But scaling them beyond this trusted boundary requires protecting against content corruption by untrusted replicas. This paper presents Repeat and Compare, a system for ensuring content integrity(More)
— This paper addresses the need for ephemeral file sharing in proximity networks and explores the necessary requirements that a mobile distributed file system (M-DFS) should satisfy in order to operate properly under typical conditions of such networks. We chose an M-DFS design based on the widely deployed NFS because of its ease of portability, lightweight(More)
Making the internet's edge easily extensible fosters collaboration and innovation on web-based applications, but also raises the problem of how to secure the execution platform. This paper presents Na Kika, an edge-side computing network, that addresses this tension between extensibility and security; it safely opens the internet's edge to all content(More)
In pervasive computing environments certain applications are interested in a user's location in order to provide a service. Such applications would benefit from an architecture that enables users to prove their location prior to requesting a service. We present PA C, an architecture for location-aware access control in pervasive computing environments,(More)
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