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M-ORAM revisited: Security and construction updates

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

1 Citation (Scopus)

Abstract

Oblivious Random Access Machine (ORAM) [4] was introduced in regard to secure the access patterns seen by a server when the data have been retrieved. Matrix based ORAM (M-ORAM) [5] is one of ORAM constructions. It has been introduced in the matrix data structure format and can achieve O(1) for both bandwidth overhead and computation complexity. With the impressive performance results; however, the given security proof is not well defined. We therefore revisit the paper to give a new proper proof method to construct the access sequence which is statically indistinguishable from random accesses. In addition according to our new security proof, M-ORAM has a security weakness in a specific circumstance. Hence, the improved M-ORAM construction which can solve the problem is also introduced.

Original languageEnglish
Title of host publicationInformation Security Practice and Experience - 14th International Conference, ISPEC 2018, Proceedings
EditorsHiroaki Kikuchi, Chunhua Su
PublisherSpringer Verlag
Pages521-532
Number of pages12
ISBN (Print)9783319998060
DOIs
Publication statusPublished - 2018
Event14th International Conference on Information Security Practice and Experience, ISPEC 2018 - Tokyo, Japan
Duration: 25 Sept 2018 → 27 Sept 2018

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume11125 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference14th International Conference on Information Security Practice and Experience, ISPEC 2018
Country/TerritoryJapan
CityTokyo
Period25/09/18 → 27/09/18

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