Providing Data Confidentiality of Outsourced Data In Cloud
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2014, Vol 3, Issue 9
Abstract
Cloud means collection of storage servers maintained by the cloud service provider which minimizes investment cost for individual users and organizations. It provides on-demand self service, resource pooling, rapid elasticity and measured service. But users are worrying about their data confidentiality stored in untrusted cloud servers. Storing data in a third party’s cloud system causes serious concern over data confidentiality. In order to provide strong confidentiality for messages in storage servers, a user can encrypt messages by a cryptographic method before applying an erasure code method to encode and store messages. Constructing a secure storage system that supports multiple functions is challenging when the storage system is distributed and has no central authority. The proposed method is a proxy re-encryption scheme which was integrated with a decentralized erasure code such that a secure distributed storage system is formulated. The distributed storage system not only supports secure and robust data storage and retrieval, but also lets a user forward his data in the storage servers to another user without retrieving the data back. The main technical contribution is that the proxy re-encryption scheme supports encoding operations over encrypting messages as well as forwarding operations over encoded and encrypted messages.
Authors and Affiliations
N_V_S Sowjanya, S. N. S. V. S. C Ramesh, S. Rama sree
Keywords
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