Abstract
Traditional methods of securing data are challenged by specific nature and architecture of cloud. With increasing sophistication of cyber attackers and advancement of cryptanalysis techniques, encryption alone is not sufficient to ensure data security. A more adaptive and flexible approach to data security is thus required. In this paper, we introduce a secure distributed file system which can be layered transparently on existing public cloud storage infrastructure. Our approach combines secret sharing and information dispersal algorithm with more flexible authentication and access control security measures to provide secure storage for enterprise data in the cloud. Our proposed architecture supports a clear separation of roles of storage owner and information owner.
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