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Kropf, Peter

Nom
Kropf, Peter
Affiliation principale
Fonction
Professeur ordinaire
Email
peter.kropf@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/221

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  • Publication
    Métadonnées seulement
    SecAdvise: A security mechanism advisor
    (: Springer-Verlag Berlin, 2002)
    Saliba, Rima
    ;
    Babin, Gilbert
    ;
    Kropf, Peter 
    ;
    Plaice, John
    ;
    Kropf, Peter 
    ;
    Schulthess, Peter
    ;
    Slonim, Jacob
    The proliferation of incompatible e-commerce systems applying different security technologies imposes difficult choices on all the concerned parties. In this context, the purpose of this research is to provide the necessary background to develop a security advisor (SecAdvise), which will make it possible to integrate the security mechanisms and the dynamic selection of the various mechanisms between several parties wishing to conduct business transactions safely. Such an advisor aims multiple goals: overcoming compatibility and interoperability problems, evaluating and reducing technological security risks, and enhancing trust.
  • Publication
    Métadonnées seulement
    Experimenting with gnutella communities
    (: Springer-Verlag Berlin, 2002)
    Vaucher, Jean
    ;
    Babin, Gilbert
    ;
    Kropf, Peter 
    ;
    Jouve, Thierry
    ;
    Plaice, John
    ;
    Kropf, Peter 
    ;
    Schulthess, Peter
    ;
    Slonim, Jacob
    Computer networks or distributed systems in general may be regarded as communities where the individual components, be they entire systems, application software or users, interact in a shared environment. Such communities dynamically evolve with components or nodes joining and leaving the system. Their own individual activities affect the community's behavior and vice versa. This paper discusses various practical experiments undertaken to investigate the behavior of a real system, the Gnutella network, which represents such a community. Gnutella is a distributed Peer-to-Peer data-sharing system without any central control. It turns out that most interactions between nodes do not last long and much of their activity is devoted to finding appropriate partners in the network. The experimental results presented have been obtained from a Java implementation of Gnutella running in the open Internet environment, and thus in unknown and quickly changing network structures heavily depending on chance.