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Catch Me If You Can: A Practical Framework to Evade Censorship in Information-Centric Networks

Reza Tourani, New Mexico State University

What
  • Computer Science Seminar
  • Colloquium
When Thu, Feb 08, 2018
from 03:30 PM to 04:20 PM
Where Ritter Hall 323
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Abstract:

Internet traffic is increasingly becoming multimedia-centric. Its growth is driven by the fast-growing mobile user base that is more interested in the content rather than its origin. These trends have motivated proposals for a new Internet networking paradigm–information-centric networking (ICN). This paradigm requires unique names for packets to leverage pervasive in-network caching, name-based routing, and named data provenance. However, named-data routing makes user censorship easy. Hence an anti-censorship mechanism is imperative to help users mask their named queries to prevent censorship and identification. However, this masking mechanism should not adversely affect request rates. 
In this talk, I present such an anti-censorship framework, which is lightweight and specifically targets low compute-power mobile devices. I analyze our framework’s information-theoretic secrecy and present perfect secrecy thresholds under different scenarios along with its breakability and computational security. Experimental results prove the framework’s effectiveness: for requests, it adds between 1.3–1.8 times in latency overhead over baseline ICN; significantly lesser than the overhead of the state of the art Tor (up to 38 times over TCP).
 
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