Handling Identity in Peer-to-Peer Systems

  • Authors:

  • Manfred Hauswirth;Anwitaman Datta;Karl Aberer

  • Affiliations:

  • -;-;-

  • Venue:
  • DEXA '03 Proceedings of the 14th International Workshop on Database and Expert Systems Applications
  • Year:
  • 2003

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Abstract

Due to the limited number of available IP addresses mostcomputers on the Internet use dynamic IP addresses whichcauses problems for applications that have to maintain routingtables, for example, peer-to-peer systems. To overcomethis we propose unique peer identifiers in the routing tablesand apply the peer-to-peer system itself to maintain consistentid-to-IP mappings to be used in the routing process.While this may sound like a recursive hen-egg problem weshow that it is in fact possible to devise such a mappingservice for realistic scenarios. Our approach is completelydecentralized, self-maintaining, and light-weight. It takesinto account security to provide sufficient security guaranteesfor the mappings. We also assume that the service operatesin an environment with low online probability of thepeers constituting the service.