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
Département:Systèmes de Communication
Eurecom ref:5253
Copyright: © 2017 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Bibtex: @inproceedings{EURECOM+5253, doi = {}, 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 = {} }
Voir aussi: