AP3: cooperative, decentralized anonymous communication

  • Authors:
  • Alan Mislove;Gaurav Oberoi;Ansley Post;Charles Reis;Peter Druschel;Dan S. Wallach

  • Affiliations:
  • Rice University, Houston, TX;Rice University, Houston, TX;Rice University, Houston, TX;University of Washington, Seattle, WA;Rice University, Houston, TX;Rice University, Houston, TX

  • Venue:
  • Proceedings of the 11th workshop on ACM SIGOPS European workshop
  • Year:
  • 2004

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Abstract

This paper describes a cooperative overlay network that provides anonymous communication services for participating users. The Anonymizing Peer-to-Peer Proxy (AP3) system provides clients with three primitives: (i) anonymous message delivery, (ii) anonymous channels, and (iii) secure pseudonyms. AP3 is designed to be lightweight, low-cost and provides "probable innocence" anonymity to participating users, even under a large-scale coordinated attack by a limited fraction of malicious overlay nodes. Additionally, we use AP3's primitives to build novel anonymous group communication facilities (multicast and anycast), which shield the identity of both publishers and subscribers.