Ecole d'ingénieur et centre de recherche en Sciences du numérique

A content-delivery protocol, exploiting the privacy benefits of coded caching

Engelmann, Felix; Elia, Petros

CCDWN 2017, 2nd Content Caching and Delivery in Wireless Networks Workshop, May 15th, 2017, Paris, France

Coded caching is a communications technique that has elevated the preemptive use of memory (caching) into a powerful ingredient in general communications networks, promising to change the way networking and PHY-based communications are conducted. At the same time though -- because this approach is heavily dependent on cooperation between the content provider (CP), and a centralized powerful transmitter of information (ISP), and because it is heavily dependent on users caching a variety of content that is not their own -- raises privacy concerns which have the potential to compromise the applicability of coded caching. What we are showing in this early work here, is that in fact coded caching carries a distinct set of salient features that in fact boost privacy. We present a step-by-step privacy-aware content-delivery protocol that utilizes caching and which -- at a small cost in performance -- can safeguard against unauthorized matching of users to their requests, as well as against unauthorized knowledge of the popularity statistics of files; both crucial privacy issues in different scenarios such as video on demand. These properties include multicasting-only transmissions for continuous obfuscation of the true destination of content, an almost seamless addition of phantom users that can skew the true popularity distribution, popularity-agnostic caches, cache-agnostic ISP, and an overall minimization of data traffic between CP and ISP, and between ISP and users.

Document Doi Bibtex

Titre:A content-delivery protocol, exploiting the privacy benefits of coded caching
Type:Conférence
Langue:English
Ville:Paris
Pays:FRANCE
Date:
Département:Systèmes de Communication
Eurecom ref:5253
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Bibtex: @inproceedings{EURECOM+5253, doi = {http://dx.doi.org/10.23919/WIOPT.2017.7959863}, year = {2017}, title = {{A} content-delivery protocol, exploiting the privacy benefits of coded caching}, author = {{E}ngelmann, {F}elix and {E}lia, {P}etros}, booktitle = {{CCDWN} 2017, 2nd {C}ontent {C}aching and {D}elivery in {W}ireless {N}etworks {W}orkshop, {M}ay 15th, 2017, {P}aris, {F}rance}, address = {{P}aris, {FRANCE}}, month = {05}, url = {http://www.eurecom.fr/publication/5253} }
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