rBridge: User Reputation based Tor Bridge Distribution with Privacy Preservation

Author(s): Qiyan Wang, Zi Lin, Nikita Borisov, Nicholas J. Hopper

Download: Paper (PDF)

Date: 23 Apr 2013

Document Type: Presentations

Additional Documents: Slides

Associated Event: NDSS Symposium 2013

Abstract:

A key challenge to the Tor bridge based circumvention system is to distribute bridges to a large scale of users while avoiding bridges falling into the hands of corrupt users. We propose rBridge — a user reputation system for bridge distribution to limit corrupt users from repeatedly blocking bridges. In addition, we study the privacy preservation problem in bridge distribution and propose a privacy-preserving rBridge scheme.