P5: a protocol for scalable anonymous communication

  • Authors:
  • Rob Sherwood;Bobby Bhattacharjee;Aravind Srinivasan

  • Affiliations:
  • University of Maryland, College Park, Maryland;University of Maryland, College Park, Maryland;University of Maryland, College Park, Maryland

  • Venue:
  • Journal of Computer Security
  • Year:
  • 2005

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Abstract

We present a protocol for anonymous communication over the Internet. Our protocol, called P5 (Peer-to-Peer Personal Privacy Protocol) provides sender-, receiver-, and sender-receiver anonymity. P5 is designed to be implemented over the current Internet Protocols, and does not require any special infrastructure support. A novel feature of P5 is that it allows individual participants to trade-off degree of anonymity for communication efficiency, and hence can be used to scalably implement large anonymous groups. We present a description of P5 an analysis of its anonymity and communication efficiency, and evaluate its performance using detailed packet-level simulations.