Email this article A Secure and authorized Duplication model in Cloud Using multi-layered cryptosystem based
Abstract
the present a scheme that permits a more fine-grained trade-off. The intuition is that outsourced data may require different levels of the protection, depending on how to popular it is: content shared by many users, such as popular song or video, arguably requires less protection than a personal document, the copy of a payslip or the draft of an un submitted scientific paper. Unfortunately, semantically secure encryption schemes render various cost-effective storage optimization techniques, such as the data de duplication, ineffective. We present a novel idea that differentiates data according to their popularity. Based on this idea, we design an encryption scheme that the guarantees semantic security for the unpopular data and provides weaker security and better storage and bandwidth benefits for popular data
Keywords
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