Bucket ORAM: Single Online Roundtrip, Constant Bandwidth Oblivious RAM

Christopher Fletcher; Muhammad Naveed; Ling Ren; Elaine Shi; Emil Stefanov

Paper 2015/1065

Bucket ORAM: Single Online Roundtrip, Constant Bandwidth Oblivious RAM

Christopher Fletcher, Muhammad Naveed, Ling Ren, Elaine Shi, and Emil Stefanov

Abstract

Known Oblivious RAM (ORAM) constructions achieve either optimal bandwidth blowup or optimal latency (as measured by online roundtrips), but not both. We are the first to demonstrate an ORAM scheme, called Bucket ORAM, which attains the best of both worlds. Bucket ORAM simultaneously achieves a single online roundtrip as well as constant overall bandwidth blowup.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Preprint. MINOR revision.
Keywords: Oblivious RAM constant bandwidth blowup single online roundtrip
Contact author(s): elaine @ cs cornell edu
History: 2015-11-04: revised; 2015-11-02: received; See all versions
Short URL: https://ia.cr/2015/1065
License: CC BY

BibTeX

@misc{cryptoeprint:2015/1065,
      author = {Christopher Fletcher and Muhammad Naveed and Ling Ren and Elaine Shi and Emil Stefanov},
      title = {Bucket {ORAM}: Single Online Roundtrip, Constant Bandwidth Oblivious {RAM}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2015/1065},
      year = {2015},
      url = {https://eprint.iacr.org/2015/1065}
}