NDLI: A privacy-protecting file system on public cloud storage

Content Provider	IEEE Xplore Digital Library
Author	Zhonghua Sheng Zhiqiang Ma Lin Gu Ang Li
Copyright Year	2011
Description	Author affiliation: Department of Computer Science and Engineering, The Hong Kong University of Science and Technology (Zhonghua Sheng; Zhiqiang Ma; Lin Gu; Ang Li)
Abstract	With the development of cloud-based systems and applications, a number of major technical firms have started to provide public cloud storage services, and store user data in datacenters strategically positioned across the Internet. However, when users store private data in shared datacenters, they lose control over how the data are stored and accessed. Multiple classes of personnel may access the physical storage media and potentially read the data. While strong cryptographic methods can protect user files from unauthorized accesses, they incur computational overhead, and make it difficult for the infrastructure provider to optimize the storage space with effective compression and deduplication. To provide strong protection on user data, we design a new file system called BIFS (Bit-Interleaving File System). Focusing on the privacy protection of the on-disk state, BIFS re-orders data in user files at the bit level, and stores bit slices at distributed locations in the storage system. While providing strong privacy protection, BIFS still retains part of the regularity in user data, and thus enables the infrastructure provider to perform a certain level of space optimization (e.g., compression). We implement BIFS on the Amazon Simple Storage Service (S3), and examine its performance characteristics. The comparison with several existing network or Internet-based file systems shows that BIFS provides robust file system functions with satisfactory throughput on S3.
Starting Page	141
Ending Page	149
File Size	1024963
Page Count	9
File Format	PDF
ISBN	9781457716355
e-ISBN	9781457716379
e-ISBN	9781457716362
DOI	10.1109/CSC.2011.6138512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data privacy Privacy Cloud computing Organizations Media Encryption Resource management
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
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
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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