Contextual Oblivious Similarity Searching for Encrypted Data on Cloud Storage Services

Lavnis, Sneha Umesh, Manimaran Elango, Divyaa and González-Vélez, Horacio (2018) Contextual Oblivious Similarity Searching for Encrypted Data on Cloud Storage Services. In: 2018 IEEE 8th International Symposium on Cloud and Service Computing (SC2). IEEE, pp. 77-82. ISBN 9781728102368

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Abstract

With the development of collaborative cloud storage services, files have been typically stored and secured through encryption making them hard to retrieve and search. Search over encrypted cloud approaches have consequently been utilizing cryptographic and indexing procedures. The vast majority use exact matching to fulfill their search criteria, which is then expanded by incorporating similarity ranking algorithms. However, this complex expansion does not always succeed due to its dependence on third parties to evaluate the search and the possible compromise on the privacy of the stored information. It also requires significant computational resources. This work demonstrates novel approach to similarity search, known as Contextual Oblivious Similarity based Search (COS2). In the proposed system, authorized users can categories searches resilient to typing errors. COS2 also introduces browsing caches to improve subscriber experience. Dual encryption mechanisms improve the relevance in searches without revealing confidential data on untrusted cloud service providers. Finally, this contextual search thrives to reduce the computational overhead of the overall search procedure, leading to a 86% improvement in terms of search efficiency.

Item Type:	Book Section
Subjects:	Q Science > QA Mathematics > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Cloud computing
Divisions:	School of Computing > Staff Research and Publications
Depositing User:	Caoimhe Ní Mhaicín
Date Deposited:	08 Jan 2019 10:39
Last Modified:	08 Jan 2019 10:39
URI:	https://norma.ncirl.ie/id/eprint/3553

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