Attribute based Storage to avoid duplicate files on cloud

Abstract

Attribute-based cryptography (ABE) has been wide utilized in cloud computing wherever information{a
knowledge|an information} supplier outsources his/her encrypted data to a cloud service supplier, and may share the
information with users possessing specific credentials (or attributes). However, the quality ABE system doesn't
support secure deduplication, that is crucial for eliminating duplicate copies of identical information so as to avoid
wasting space for storing and network information measure. During this paper, we tend to gift an attribute-based
storage system with secure deduplication in an exceedingly hybrid cloud setting, wherever a non-public cloud is
accountable for duplicate detection and a public cloud manages the storage. Compared with the previous information
deduplication systems, our system has 2 benefits. Firstly, it may be used to confidentially share information with users
by specifying access policies instead of sharing cryptography keys. Secondly, it brings home the bacons the quality
notion of linguistics security for information confidentiality whereas existing systems solely achieve it by process a
weaker security notion. Additionally, we tend to place forth a technique to switch a ciphertext over one access policy
into ciphertexts of an equivalent plaintext however underneath different access policies while not revealing the
underlying plaintext.