NDLI: HEDup: Secure Deduplication with Homomorphic Encryption

Content Provider	IEEE Xplore Digital Library
Author	Miguel, R. Khin Mi Mi Aung Mediana
Copyright Year	2015
Description	Author affiliation: Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore, Singapore (Mediana) \|\| Data Centre Technol. Div., A*STAR, Singapore, Singapore (Miguel, R.; Khin Mi Mi Aung)
Abstract	Deduplication on encrypted data is a promising trend for both cloud storage providers and subscribers. Data deduplication allows cloud storage providers (CSP) to save storage space by eliminating the copies of the same data. Data encryption can ensure the confidentiality of customer's data both in transit and at rest. However, deduplication that works on detecting identical data does not work well with encrypted data provided by conventional encryption. Encryption of the same data using different key (by different subscribers) will result in different ciphertexts that will not allow the CSP to carry out deduplication. In this paper, we propose a scheme to allow deduplication on encrypted data with the aid of a key server deployed at cloud service provider premises, called HEDup (Homomorphic Encryption Deduplication). In this solution, the subscriber encrypts data with data-encryption key obtained from key server via various key-management schemes, one of which uses homomorphic encryption. The main contributions of this project are (1) with a key server deployed at cloud provider premises, it will not only deduplicate data from particular domain but also for the CSP's entire client base including public and different enterprise users - this results in higher storage savings and (2) data owners still maintain exclusive control of their data and data-encryption keys, i.e. CSP has no access to any of it - strong confidentiality guarantees. The experiments conducted show that data uploads and downloads using HEDup have minor storage and latency overhead. Our implementation also shows significant performance optimization when compared to commercial key management service for cloud object storage.
Starting Page	215
Ending Page	223
File Size	604412
Page Count	9
File Format	PDF
e-ISBN	9781467378918
DOI	10.1109/NAS.2015.7255226
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data Deduplication Cloud Storage Cloud computing Data privacy Databases Homomorphic Encryption Key Server Confidentiality Encryption Servers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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