NDLI: On Information Leakage in Deduplicated Storage Systems

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On Information Leakage in Deduplicated Storage Systems

Content Provider	ACM Digital Library
Author	Ritzdorf, Hubert Soriente, Claudio Karame, Ghassan Čapkun, Srdjan
Abstract	Most existing cloud storage providers rely on data deduplication in order to significantly save storage costs by storing duplicate data only once. While the literature has thoroughly analyzed client-side information leakage associated with the use of data deduplication techniques in the cloud, no previous work has analyzed the information leakage associated with access trace information information (e.g., object size and timing) that are available whenever a client uploads a file to a curious cloud provider. In this paper, we address this problem and analyze information leakage associated with data deduplication on a curious storage server. We show that even if the data is encrypted using a key not known by the storage server, the latter can still acquire considerable information about the stored files and even determine which files are stored. We validate our results both analytically and experimentally using a number of real storage datasets.
Starting Page	61
Ending Page	72
Page Count	12
File Format	PDF
ISBN	9781450345729
DOI	10.1145/2996429.2996432
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-10-28
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Privacy Storage inference Cloud storage Deduplication Information leakage
Content Type	Text
Resource Type	Article

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