Oblivious RAM revisited

Benny Pinkas; Tzachy Reinman

doi:10.1007/978-3-642-14623-7_27

Oblivious RAM revisited

Benny Pinkas, Tzachy Reinman

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

158 Scopus citations

Abstract

We reinvestigate the oblivious RAM concept introduced by Goldreich and Ostrovsky, which enables a client, that can store locally only a constant amount of data, to store remotely n data items, and access them while hiding the identities of the items which are being accessed. Oblivious RAM is often cited as a powerful tool, but is also commonly considered to be impractical due to its overhead, which is asymptotically efficient but is quite high.We redesign the oblivious RAM protocol using modern tools, namely Cuckoo hashing and a new oblivious sorting algorithm. The resulting protocol uses only O(n) external memory, and replaces each data request by only O(log ² n) requests.

Original language	English
Title of host publication	Advances in Cryptology - CRYPTO 2010 - 30th Annual Cryptology Conference, Proceedings
Pages	502-519
Number of pages	18
DOIs	https://doi.org/10.1007/978-3-642-14623-7_27
State	Published - 2010
Externally published	Yes
Event	30th Annual International Cryptology Conference, CRYPTO 2010 - Santa Barbara, CA, United States Duration: 15 Aug 2010 → 19 Aug 2010

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	6223 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	30th Annual International Cryptology Conference, CRYPTO 2010
Country/Territory	United States
City	Santa Barbara, CA
Period	15/08/10 → 19/08/10

Keywords

Secure two-party computation
oblivious RAM

Access to Document

10.1007/978-3-642-14623-7_27

Cite this

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title = "Oblivious RAM revisited",

abstract = "We reinvestigate the oblivious RAM concept introduced by Goldreich and Ostrovsky, which enables a client, that can store locally only a constant amount of data, to store remotely n data items, and access them while hiding the identities of the items which are being accessed. Oblivious RAM is often cited as a powerful tool, but is also commonly considered to be impractical due to its overhead, which is asymptotically efficient but is quite high.We redesign the oblivious RAM protocol using modern tools, namely Cuckoo hashing and a new oblivious sorting algorithm. The resulting protocol uses only O(n) external memory, and replaces each data request by only O(log 2 n) requests.",

keywords = "Secure two-party computation, oblivious RAM",

author = "Benny Pinkas and Tzachy Reinman",

year = "2010",

doi = "10.1007/978-3-642-14623-7_27",

language = "אנגלית",

isbn = "3642146228",

series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",

pages = "502--519",

booktitle = "Advances in Cryptology - CRYPTO 2010 - 30th Annual Cryptology Conference, Proceedings",

note = "30th Annual International Cryptology Conference, CRYPTO 2010 ; Conference date: 15-08-2010 Through 19-08-2010",

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Pinkas, B & Reinman, T 2010, Oblivious RAM revisited. in Advances in Cryptology - CRYPTO 2010 - 30th Annual Cryptology Conference, Proceedings. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 6223 LNCS, pp. 502-519, 30th Annual International Cryptology Conference, CRYPTO 2010, Santa Barbara, CA, United States, 15/08/10. https://doi.org/10.1007/978-3-642-14623-7_27

Oblivious RAM revisited. / Pinkas, Benny; Reinman, Tzachy.
Advances in Cryptology - CRYPTO 2010 - 30th Annual Cryptology Conference, Proceedings. 2010. p. 502-519 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 6223 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Oblivious RAM revisited

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Keywords

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