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Authorized Client-Side Deduplication Using CP-ABE in Cloud Storage
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NSTL
Wiley-Hindawi
Since deduplication inevitably implies data sharing, control over access permissions in an encrypted deduplication storage is more important than a traditional encrypted storage. Therefore, in terms of flexibility, data deduplication should be combined with data access control techniques. In this paper, we propose an authorized deduplication scheme using CP-ABE to solve this problem. The proposed scheme provides client-side deduplication while providing confidentiality through client-side encryption to prevent exposure of users' sensitive data on untrusted cloud servers. Also, unlike existing convergent encryption schemes, it provides authorized convergent encryption by using CP-ABE to allow only authorized users to access critical data. The proposed authorized deduplication scheme provides an adequate trade-off between storage space efficiency and security in cloud environment and is very suitable for the hybrid cloud model considering both the data security and the storage efficiency in a business environment.
Taek-Young Youn、Nam-Su Jho、Kyung Hyune Rhee、Sang Uk Shin
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Electronics and Telecommunications Research Institute (ETRI)
Department of IT Convergence and Application Eng., Pukyong National University
NSTL
Wiley-Hindawi
