Abstract
The cloud is the most suitable platform for storing and processing of data. Users are outsourcing data to the cloud to reduce the storage and maintenance cost locally. However, there are challenges to both cloud users as well as to the cloud service provider. The challenge for cloud service providers is to optimize the associated cost for the management and maintenance of uploaded data. The challenge for users is data privacy. To address these issues, encrypted data deduplication schemes proposed, but existing schemes suffer from security weakness and do not support data access control. In this paper, we propose an efficient ciphertext policy attribute-based encryption scheme for deduplication over encrypted data (ECP-ABE) in the cloud storage. Our scheme achieves privacy,deduplication along with access controls. The security and performance analysis demonstrates that our scheme is secure and efficient.
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