[en] Video consumption is one of the most popular Internet activities worldwide. The emergence of sharing videos directly recorded with smartphones raises important privacy concerns. In this paper we propose P3LS , the first practical privacy-preserving peer-to-peer live streaming system. To protect the privacy of its users, P3LS relies on k-anonymity when users subscribe to streams, and on plausible deniability for the dissemination of video streams. Specifically, plausible deniability during the dissemination phase ensures that an adversary is never able to distinguish a user’s stream of interest from the fake streams from a statistical analysis (i.e., using an analysis of variance). We exhaustively evaluate P3LS and show that adversaries are not able to identify the real stream of a user with very high confidence. Moreover, P3LS consumes 30% less bandwidth than the standard k-anonymity approach where nodes fully contribute to the dissemination of k streams.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > Critical and Extreme Security and Dependability Research Group (CritiX)
Disciplines :
Computer science
Author, co-author :
Decouchant, Jérémie ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Boutet, Antoine; University of Lyon, INSA Lyon, Inria, CITI
Yu, Jiangshan; Monash University
Verissimo, Paulo ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
yes
Language :
English
Title :
P3LS : Plausible Deniability for Practical Privacy-Preserving Live Streaming
Publication date :
October 2019
Event name :
38th International Symposium on Reliable Distributed Systems (SRDS 2019)
Event date :
from 01-10-2019 to 04-10-2019
Audience :
International
Focus Area :
Security, Reliability and Trust
FnR Project :
FNR8149128 - Strategic Rtnd Program On Information Infrastructure Security And Dependability, 2014 (01/01/2015-31/12/2021) - Marcus Völp