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Scalable and Anonymous Group Communication with MTor

Scalable and Anonymous Group Communication with MTor Abstract This paper presents MTor, a low-latency anonymous group communication system. We construct MTor as an extension to Tor, allowing the construction of multi-source multicast trees on top of the existing Tor infrastructure. MTor does not depend on an external service to broker the group communication, and avoids central points of failure and trust. MTor’s substantial bandwidth savings and graceful scalability enable new classes of anonymous applications that are currently too bandwidth-intensive to be viable through traditional unicast Tor communication-e.g., group file transfer, collaborative editing, streaming video, and real-time audio conferencing. We detail the design of MTor and then analyze its performance and anonymity. By simulating MTor in Shadow and TorPS using realistic models of the live Tor network’s topology and recent consensus records from the live Tor network, we show that MTor achieves a 29% savings in network bandwidth and a 73% reduction in transmission time as compared to the baseline approach for anonymous group communication among 20 group members. We also demonstrate that MTor scales gracefully with the number of group participants, and allows dynamic group composition over time. Importantly, as more Tor users switch to group communication, we show that the overall performance and utilization for group communication improves. Finally, we discuss the anonymity implications of MTor and measure its resistance to traffic correlation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings on Privacy Enhancing Technologies de Gruyter

Scalable and Anonymous Group Communication with MTor

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Publisher
de Gruyter
Copyright
Copyright © 2016 by the
ISSN
2299-0984
eISSN
2299-0984
DOI
10.1515/popets-2016-0003
Publisher site
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Abstract

Abstract This paper presents MTor, a low-latency anonymous group communication system. We construct MTor as an extension to Tor, allowing the construction of multi-source multicast trees on top of the existing Tor infrastructure. MTor does not depend on an external service to broker the group communication, and avoids central points of failure and trust. MTor’s substantial bandwidth savings and graceful scalability enable new classes of anonymous applications that are currently too bandwidth-intensive to be viable through traditional unicast Tor communication-e.g., group file transfer, collaborative editing, streaming video, and real-time audio conferencing. We detail the design of MTor and then analyze its performance and anonymity. By simulating MTor in Shadow and TorPS using realistic models of the live Tor network’s topology and recent consensus records from the live Tor network, we show that MTor achieves a 29% savings in network bandwidth and a 73% reduction in transmission time as compared to the baseline approach for anonymous group communication among 20 group members. We also demonstrate that MTor scales gracefully with the number of group participants, and allows dynamic group composition over time. Importantly, as more Tor users switch to group communication, we show that the overall performance and utilization for group communication improves. Finally, we discuss the anonymity implications of MTor and measure its resistance to traffic correlation.

Journal

Proceedings on Privacy Enhancing Technologies – de Gruyter

Published: Apr 1, 2016

References

  • Rooms http www rooms me
  • Crowds Anonymity for Web Transactions on Information and System
    Reiter
  • Why not an In Workshop
    Syverson
  • The Dining Problem Unconditional Sender and Recipient of
    Chaum
  • for and Performance in Low - Latency Anonymity Systems In PETS
    Murdoch
  • Website Fingerprinting in Onion Routing Based Anonymization In ACM Workshop on Privacy in the Electronic
    Panchenko
  • Users Get Routed Correlation on Tor By Realistic Adversaries In ACM Conference on Computer and Communications November
    Johnson
  • High - Bandwidth Multicast in Cooperative Environments In on Operating Systems Principles pages
    Castro
  • Managing Tor Connections from Two to Infinity Beyond In Workshop on Privacy in the Electronic
    Geddes
  • Crowds Anonymity for Web Transactions on Information and System
    Reiter
  • Shadow Running Tor in a Box for Accurate and Efficient Experimentation In Network and Distributed System
    Jansen
  • Dingledine Tor Rendezvous Specification Available at https gitweb torproject org torspec git log rend spec txt ofs
    Mathewson
  • The New Approaches to Measures in Tor Technical Report Cheriton School of University of Waterloo
    Hamel
  • Lightweight Incentivized Routing for Anonymity In Network and Distributed System
    Jansen
  • Mathewson Next Generation Hidden Service in Tor Draft Tor Project https gitweb torproject org torspec git plain proposals rend spec ng txt
  • Tor The Second Generation Onion Router In
    Dingledine
  • Proving Security of Tor s Hidden Service Identity Blinding Protocol Technical Report Tor Project
    Hopper
  • Website Fingerprinting in Onion Routing Based Anonymization In ACM Workshop on Privacy in the Electronic
    Panchenko
  • Users Get Routed Correlation on Tor By Realistic Adversaries In ACM Conference on Computer and Communications November
    Johnson
  • Tor network analysis nd pages
    Perry
  • Sicker Shining Light in Dark Places Understanding the Tor Network In PETS
    McCoy
  • Accountable Anonymous Group Messaging In ACM Conference on and Communications
    Corrigan
  • Touching from a Distance : Website Fingerprinting Attacks and Defenses In ACM Conference on Computer and Communications
    Cai
  • Case for End System In SIGMETRICS Performance
    Chu
  • Improved Group Off - the - record Messaging In ACM Workshop on Privacy in the Electronic
    Liu
  • Towards an Information Theoretic Metric for Anonymity In PET
    Serjantov
  • Global IP Solutions The Internet Low Bitrate Codec http tools ietf org html rfc
    ILBC
  • Yak http www yikyakapp com
  • Tor network analysis nd pages
    Perry
  • Dingledine Tor Rendezvous Specification Available at https gitweb torproject org torspec git log rend spec txt ofs
    Mathewson
  • Dingledine Research Problem Better Rotation Parameters Available at https blog torproject org blog research problem better guardrotation parameters
    Guard
  • Tor Project Tor Portal https metrics torproject org
    Metrics
  • Methodically Modeling the Tor Network In
    Jansen
  • Global IP Solutions The Internet Low Bitrate Codec http tools ietf org html rfc
    ILBC
  • of Website Traffic Fingerprinting Attacks Available at https blog torproject org blog critiquewebsite traffic fingerprinting attacks
    Perry
  • Secret https www secret ly
  • High speed High security Signatures of
    Bernstein
  • Whisper http www whisper sh
  • The New Approaches to Measures in Tor Technical Report Cheriton School of University of Waterloo
    Hamel
  • Never Been Tor s Congestion Management Blossoms with Kernel - Informed Socket Transport In
    Jansen
  • Secret https www secret ly
  • Lightweight Incentivized Routing for Anonymity In Network and Distributed System
    Jansen
  • Improved Group Off - the - record Messaging In ACM Workshop on Privacy in the Electronic
    Liu
  • Rushe http www theguardian com world oct sp revealed whisper app tracking users
    Lewis
  • Accountable Anonymous Group Messaging In ACM Conference on and Communications
    Corrigan
  • Tor Project Inc Tor FAQ What Attacks Remain Against Onion Routing Available at https www torproject org docs faq html en AttacksOnOnionRouting
  • Practical Congestion Attack on Tor using Long Paths In
    Evans
  • Mathewson Next Generation Hidden Service in Tor Draft Tor Project https gitweb torproject org torspec git plain proposals rend spec ng txt
  • High - Bandwidth Multicast in Cooperative Environments In on Operating Systems Principles pages
    Castro
  • Herbivore Efficient Protocol for Anonymous Technical report University
    Goel
  • Case for End System In SIGMETRICS Performance
    Chu
  • The Sniper Attack Anonymously Deanonymizing and Disabling the Tor Network In Network and Distributed System
    Jansen
  • Privacy - preserving Ways to Estimate the Number of Tor Users Technical Report Tor Project November
    Hahn
  • Rooms http www rooms me
  • Touching from a Distance : Website Fingerprinting Attacks and Defenses In ACM Conference on Computer and Communications
    Cai
  • Mixes for Efficient and Anonymous In International Conference on Distributed
    Perng
  • Mixes for Efficient and Anonymous In International Conference on Distributed
    Perng
  • Rushe http www theguardian com world oct sp revealed whisper app tracking users
    Lewis
  • Practical Congestion Attack on Tor using Long Paths In
    Evans
  • Tor The Second Generation Onion Router In
    Dingledine
  • Extending the Internet Multicast Unpublished manuscript available at https mpi sws org francis yoidArch pdf
    Francis
  • Overcast Reliable Multicasting with an Overlay Network In on Operating System Design Implementation
    Jannotti
  • Herbivore Efficient Protocol for Anonymous Technical report University
    Goel
  • Dingledine Research Problem Better Rotation Parameters Available at https blog torproject org blog research problem better guardrotation parameters
    Guard
  • for and Performance in Low - Latency Anonymity Systems In PETS
    Murdoch
  • Methodically Modeling the Tor Network In
    Jansen
  • Extending the Internet Multicast Unpublished manuscript available at https mpi sws org francis yoidArch pdf
    Francis
  • Website Fingerprinting : Attacking Popular Technologies with the Multinomial Naive - bayes In ACM Workshop on Cloud
    Herrmann
  • The Dining Problem Unconditional Sender and Recipient of
    Chaum
  • Sicker Shining Light in Dark Places Understanding the Tor Network In PETS
    McCoy
  • Towards an Information Theoretic Metric for Anonymity In PET
    Serjantov
  • Low Cost of Tor In on Privacy Oakland
    Murdoch
  • Whisper http www whisper sh
  • One Fast for Life or months In PETS
    Dingledine
  • Yak http www yikyakapp com
  • Proving Security of Tor s Hidden Service Identity Blinding Protocol Technical Report Tor Project
    Hopper
  • High speed High security Signatures of
    Bernstein
  • Website Fingerprinting : Attacking Popular Technologies with the Multinomial Naive - bayes In ACM Workshop on Cloud
    Herrmann
  • Shadow Running Tor in a Box for Accurate and Efficient Experimentation In Network and Distributed System
    Jansen
  • Why not an In Workshop
    Syverson
  • Privacy - preserving Ways to Estimate the Number of Tor Users Technical Report Tor Project November
    Hahn
  • of Website Traffic Fingerprinting Attacks Available at https blog torproject org blog critiquewebsite traffic fingerprinting attacks
    Perry
  • Routing in Datagram and Extended LANs on
    Deering
  • Tor Project Inc Tor FAQ What Attacks Remain Against Onion Routing Available at https www torproject org docs faq html en AttacksOnOnionRouting
  • Never Been Tor s Congestion Management Blossoms with Kernel - Informed Socket Transport In
    Jansen
  • Managing Tor Connections from Two to Infinity Beyond In Workshop on Privacy in the Electronic
    Geddes
  • Overcast Reliable Multicasting with an Overlay Network In on Operating System Design Implementation
    Jannotti
  • Routing in Datagram and Extended LANs on
    Deering
  • Low Cost of Tor In on Privacy Oakland
    Murdoch
  • The Sniper Attack Anonymously Deanonymizing and Disabling the Tor Network In Network and Distributed System
    Jansen
  • Tor Project Tor Portal https metrics torproject org
    Metrics
  • One Fast for Life or months In PETS
    Dingledine