Scalable and private media consumption with Popcorn

Trinabh Gupta; Natacha Crooks; Whitney Mulhern; Srinath Setty; Lorenzo Alvisi; Michael Walfish

Paper 2015/489

Scalable and private media consumption with Popcorn

Trinabh Gupta, Natacha Crooks, Whitney Mulhern, Srinath Setty, Lorenzo Alvisi, and Michael Walfish

Abstract

We describe the design, implementation, and evaluation of Popcorn, a media delivery system that hides clients' consumption (even from the content distributor). Popcorn relies on a powerful cryptographic primitive: private information retrieval (PIR). With novel refinements that leverage the properties of PIR protocols and media streaming, Popcorn scales to the size of Netflix's library (8000 movies) and respects current controls on media dissemination. The dollar cost to serve a media object in Popcorn is 3.87 times that of a non-private system.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Published elsewhere. Minor revision. USENIX NSDI
Keywords: private information retrieval implementation cryptographic protocol
Contact author(s): trinabh @ cs utexas edu
History: 2016-02-29: last of 3 revisions; 2015-05-22: received; See all versions
Short URL: https://ia.cr/2015/489
License: CC BY

BibTeX

@misc{cryptoeprint:2015/489,
      author = {Trinabh Gupta and Natacha Crooks and Whitney Mulhern and Srinath Setty and Lorenzo Alvisi and Michael Walfish},
      title = {Scalable and private media consumption with Popcorn},
      howpublished = {Cryptology {ePrint} Archive, Paper 2015/489},
      year = {2015},
      url = {https://eprint.iacr.org/2015/489}
}