XPay: practical anonymous payments for tor routing and other networked services

  • Authors:
  • Yao Chen;Radu Sion;Bogdan Carbunar

  • Affiliations:
  • Stony Brook University, Stony Brook, NY, USA;Stony Brook University, Stony Brook, NY, USA;Motorola Labs, Chicago, IL, USA

  • Venue:
  • Proceedings of the 8th ACM workshop on Privacy in the electronic society
  • Year:
  • 2009

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Abstract

We design and analyze the first practical anonymous payment mechanisms for network services. We start by reporting on our experience with the implementation of a routing micropayment solution for Tor. We then propose micropayment protocols of increasingly complex requirements for networked services, such as P2P or cloud-hosted services. The solutions are efficient, with bandwidth and latency overheads of under 4% and 0.9 ms respectively (in ORPay for Tor), provide full anonymity (both for payers and payees), and support thousands of transactions per second.