Cloud computing on its own is a technology, arming many services with its resources on the internet, when we speak about big data context, as we have witnessed massive growth in the use of internet that indeed has increased the demand for greater storage capacities where now MB’s and GB’s are small talks in the fields of storage. When we talk about the cloud storage there are privacy and security concerns that we need to work upon for which as of in this paper we propose and use techniques such as pre-authentication, encryption and de- encryption policies. The pre-authentication and proxy re-encryption mechanisms combine the advantages of proxy conditional re-encryption multi-sharing mechanism It can simply be termed as privacy preserving approach to increase security of data on cloud.

Privacy, pre-authentication, big data

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