A security proxy to cloud storage backends based on an efficient wildcard searchable encryption

Shen Ming Chung, Ming Der Shieh, Tzi Cker Chiueh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Cloud storage backends such as Amazon S3 are a potential storage solution to enterprises. However, to couple enterprises with these backends, at least two problems must be solved: First, how to make these semi-trusted backends as secure as on-premises storage; and second, how to selectively retrieve files as easy as on-premises storage. A security proxy can address both the problems by building a local index from keywords in files before encrypting and uploading files to these backends. But, if the local index is built in plaintext, file content is still vulnerable to local malicious staff. Searchable Encryption (SE) can get rid of this vulnerability by making index into ciphertext; however, its known constructions often require modifications to index database, and, to support wildcard queries, they are not efficient at all. In this paper, we present a security proxy that, based on our wildcard SE construction, can securely and efficiently couple enterprises with these backends. In particular, since our SE construction can work directly with existing database systems, it incurs only a little overhead, and when needed, permits the security proxy to run with constantly small storage footprint by readily out-sourcing all built indices to existing cloud databases.

Original languageEnglish
Title of host publicationProceedings - 8th IEEE International Symposium on Cloud and Services Computing, SC2 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages127-130
Number of pages4
ISBN (Electronic)9781728102368
DOIs
Publication statusPublished - 2018 Dec 6
Event8th IEEE International Symposium on Cloud and Services Computing, SC2 2018 - Paris, France
Duration: 2018 Nov 192018 Nov 22

Publication series

NameProceedings - 8th IEEE International Symposium on Cloud and Services Computing, SC2 2018

Other

Other8th IEEE International Symposium on Cloud and Services Computing, SC2 2018
CountryFrance
CityParis
Period18-11-1918-11-22

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture
  • Information Systems
  • Information Systems and Management

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