Paper 2018/715 Original: eprint.iacr.org/2018/715 ↗

Practical Attacks on Relational Databases Protected via Searchable Encryption

Mohamed Ahmed Abdelraheem
Tobias Andersson
Christian Gehrmann
Cornelius Glackin
Abstract

Searchable symmetric encryption (SSE) schemes are commonly proposed to enable search in a protected unstructured documents such as email archives or any set of sensitive text files. However, some SSE schemes have been recently proposed in order to protect relational databases. Most of the previous attacks on SSE schemes have only targeted its common use case, protecting unstructured data. In this work, we propose a new inference attack on relational databases protected via SSE schemes. Our inference attack enables a passive adversary with only basic knowledge about the meta-data information of the target relational database to recover the attribute names of some observed queries. This violates query privacy since the attribute name of a query is secret.

Metadata
Available format(s)
PDF
Category
Applications
Publication info
Preprint.
History
2018-08-01: last updated
2018-08-01: published
Short URL
https://ia.cr/2018/715
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2018/715,
      author = {Mohamed Ahmed Abdelraheem and Tobias Andersson and Christian Gehrmann and Cornelius Glackin},
      title = {Practical Attacks on Relational Databases Protected via Searchable Encryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2018/715},
      year = {2018},
      url = {https://eprint.iacr.org/2018/715}
}
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