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Non-observabilité des communications à faible latence

Abstract : This thesis is built around two parts, both related to the protection of privacy in computer networks, and more precisely on the Internet.

In the first part, we propose a system allowing the establishment of unobservable interactive communications, unobservable meaning an observer can neither pinpoint the destination(s) of those communications, nor, in fact, know if there are real communications in the first place!
This system aims to provide an unequaled level of protection, as even a very powerful observer should not be able to bypass it.
This protection is based on Onion-Routing and adds innovative methods against traffic analysis.

In the second part, we take a closer look at the DNS protocol.
While it is possible to protect it with our proposition described in the first part, this degrades performance, specifically latency, which has an impact on those protocols using DNS.
In this part, we propose a DNS specific solution, providing both a good level of protection and better performance.

These two systems can be combined of course, but they can also be used as separate bricks with other privacy enhancing mechanisms too.
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Contributor : Nicolas Bernard <>
Submitted on : Friday, September 26, 2008 - 4:28:41 PM
Last modification on : Thursday, November 19, 2020 - 12:59:38 PM
Long-term archiving on: : Thursday, June 3, 2010 - 10:05:40 PM



  • HAL Id : tel-00325234, version 1




Nicolas Bernard. Non-observabilité des communications à faible latence. Réseaux et télécommunications [cs.NI]. Université Joseph-Fourier - Grenoble I; université du Luxembourg, 2008. Français. ⟨tel-00325234⟩



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