Abstract. We present a system architecture for trusted transactions in highly sensitive environments. This architecture takes advantage of techniques provided by the Trusted Computing Group (TCG) to attest the system state of the communication partners, to guarantee that the system is free of malware and that its software has not been tampered with. To achieve meaningful attestation, virtualization is used to establish several different execution environments. The attestation process is limited to a fragment of the software running on the platform, more specifically, to the part requesting access to sensitive data. The Trusted Platform Module (TPM) is virtualized, in order to make it accessible for an execution environment with a higher trust level.
ZusammenfassungPeer-to-Peer ist ein fundamentales Designprinzip und stellt einen Paradigmenwechsel für die Kommunikation in Computernetzwerken dar. In diesem Beitrag wird zunächst definiert, welche Charakteristika Peer-to-Peer-Systeme ausmachen. Anhand von vier Qualitätsmerkmalen hat die Forschergruppe „QuaP2P” ihre Arbeitsbereiche untergliedert. Dieser Gliederung folgend wird anschließend der aktuelle Stand der Wissenschaft und Herausforderungen im Bereich Peer-to-Peer-Forschung zusammengefasst. Dies gibt dem Leser einen strukturieren Überblick, um sich mit den wesentlichen Arbeiten dieses hoch aktuellen Forschungsthemas auseinandersetzen zu können.
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