PRIVACY AWARE DATA DEDUPLICATION FOR SIDE CHANNEL IN CLOUD STORAGE

COMPUTER SCIENCE AND ENGINEERING

Data de duplication technique has been widely adopted by commercial cloud storage providers, which is both important and necessary in dealing with the explosive growth of information. To further protect the protection of users’ sensitive data within the outsourced storage mode, many secure data de duplication schemes are designed and applied in various scenarios. Among these schemes, secure and efficient re-encryption for encrypted data de duplication attracted the eye of the many scholars, and lots of solutions are designed to support dynamic ownership management. during this paper, we target the re-encryption de duplication storage system and show that the recently designed lightweight rekeying-aware encrypted de duplication scheme is liable to an attack which we call it stub-reserved attack. Furthermore, we propose a secure data de duplication scheme with efficient re-encryption supported the convergent all-or-nothing transform and randomly sampled bits from the Bloom filter. because of the intrinsic property of one-way hash function, our scheme can resist the stub-reserved attack and guarantee the info privacy of information owners’ sensitive data. Moreover, rather than re-encrypting the complete package, data owners are only required to re-encrypt a tiny low a part of it through the CAONT, thereby effectively reducing the computation overhead of the system. Finally, security analysis and experimental results show that our scheme is secure and efficient in re-encryption.

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