Abstract: Cloud computing is widely use in today’s time which removes user’s burden of local data storage. While providing storage it is important to provide security and integrity of the outsourced data. A Proof Of Storage (POS) is the main technique introduced to address this problem. Publically verifiable POS allows the third party to verify data integrity on behalf of the data owner which significantly improves the scalability of cloud service. There are existing publically verifiable POS schemes which are extremely slow to compute authentication tags for all data blocks. In this paper we are proposing a new variant called ‘Delegable Proofs of Storage’. The tag generation process is speed up by at least several hundred times, without sacrificing efficiency in any other aspect. The propose scheme is extended to support fully dynamic operations with high efficiency. We are going to divide data files into blocks and going to use double encryption. Which will obviously provide more security to users data again we are going to divide our data into blocks and store it on different cloud server. So if attackers get access to data on one server, the remaining data will be secure
Keywords: AVL Tree, Proof of Storage, Delegable Proofs of Storage
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DOI:
10.17148/IJARCCE.2018.7102
