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Auflistung nach Autor:in "Kassler, Andreas"

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  • Konferenzbeitrag
    Description and lookup of media-stream adaptation services
    (INFORMATIK 2006 – Informatik für Menschen – Band 2, Beiträge der 36. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2006) Schorr, Andreas; Hauck, Franz; Kassler, Andreas
    In this paper, we propose a new application of RDF that enables the description of services offered by so-called media-stream adaptation nodes (MSANs). An MSAN can manipulate a stream by changing media format and quality on-the-fly during an ongoing streaming process. An accurate description of the offered services is necessary, because different clients may have very specific requirements that cannot be fulfilled by every MSAN. In this paper, we propose an RDF-based vocabulary that enables an MSAN to provide such an accurate description of its services. We also demonstrate how clients can formulate search queries to find a services provider that fulfills their specific requirements.
  • Konferenzbeitrag
    Security extensions to MMARP through cryptographically generated addresses
    (Informatik 2005 – Informatik Live! Band 2, 2005) Galera, Francisco J.; Ruiz, Pedro M.; Gomez-Skarmeta, Antonio F.; Kassler, Andreas
    The MMARP protocol provides multicast routing in hybrid environments in which an ad hoc network is connected to the Internet. As many other routing protocols it was initially designed without taking into account security concerns. In this paper we propose some extensions to protect the protocol against spoofing and forging attacks. Our solution, based on cryptographically generated addresses and digital signatures, has proven to be effective without the presence of a centralized certification authority.