CoCo: Coding-based covert timing channels for network flows

Amir Houmansadr, Nikita Borisov

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper, we propose CoCo, a novel framework for establishing covert timing channels. The CoCo covert channel modulates the covert message in the inter-packet delays of the network flows, while a coding algorithm is used to ensure the robustness of the covert message to different perturbations. The CoCo covert channel is adjustable: by adjusting certain parameters one can trade off different features of the covert channel, i.e., robustness, rate, and undetectability. By simulating the CoCo covert channel using different coding algorithms we show that CoCo improves the covert robustness as compared to the previous research, while being practically undetectable.

Original languageEnglish (US)
Title of host publicationInformation Hiding - 13th International Conference, IH 2011, Revised Selected Papers
Number of pages15
StatePublished - 2011
Event13th International Conference on Information Hiding, IH 2011 - Prague, Czech Republic
Duration: May 18 2011May 20 2011

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6958 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other13th International Conference on Information Hiding, IH 2011
Country/TerritoryCzech Republic

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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