On Applications of Cooperative Security in Distributed Networks
Abstract
ManyapplicationsrunningontheInternetoperateinfullyor semi-distributed fashion including P2P networks or social networks. Dis- tributed applications exhibit many advantages over classical client-server models regarding scalability, fault tolerance, and cost. Unfortunately, the distributed system operation also brings many security threats along that challenge their performance and reliability. In particular, faulty or mis- behaving nodes cannot collude to subvert the system operation. This paper addresses the above threats by applying cooperative security techniques to relevant distributed systems in the Internet. Our goal is to present methods that allow the peers to bootstrap basic trust relation- ships at the time of joining a distributed network and remove the peers if trust is lost. We consider the specific security caveats of the analyzed sys- tems, investigate the applicability of existing cooperative security-based protocols, and propose general design guidelines for cooperative-security protocol in described distributed systems.
Dmitriy Kuptsov
Oscar Garcia-Morchon
Klaus Wehrle
Head of Group