Secure Deduplication of Encrypted Data without Additional Independent Servers

Jian Liu, N. Asokan, Benny Pinkas

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

175 Citations (Scopus)


Encrypting data on client-side before uploading it to a cloud storage is essential for protecting
users' privacy. However client-side encryption is at odds with the standard practice of deduplication.
Reconciling client-side encryption with cross-user deduplication is an active research topic. We
present the first secure cross-user deduplication scheme that supports client-side encryption {\em without
requiring any additional independent servers}. Interestingly, the scheme is based on using a PAKE (password
authenticated key exchange) protocol. We demonstrate that {\em our scheme provides better security
guarantees than previous efforts}. We show both the effectiveness and the efficiency of our scheme,
via simulations using realistic datasets and an implementation.
Original languageEnglish
Title of host publication22nd ACM Conference on Computer and Communications Security (CCS), Denver, Colorado, US, October 12-16, 2015
ISBN (Print)978-1-4503-3832-5
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication


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