Large scale simulation of Tor: modelling a global passive adversary

  • Authors:
  • Gavin O'Gorman;Stephen Blott

  • Affiliations:
  • Dublin City University, Dublin, Ireland;Dublin City University, Dublin, Ireland

  • Venue:
  • ASIAN'07 Proceedings of the 12th Asian computing science conference on Advances in computer science: computer and network security
  • Year:
  • 2007

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Abstract

Implementing global passive adversary attacks on currently deployed low latency anonymous networks is not feasible. This paper describes the implementation of a large scale, discrete event based simulation of Tor, using the SSFNet simulator. Several global passive adversary attacks are implemented on a simulated Tor network comprised of approximately 6000 nodes. The attacks prove to be highly accurate (80 percent stream correlation rate) for low traffic conditions but significantly less effective on denser, multiplexed links (18 percent success rate).