A Result Evaluation Based On Privacy Preserving Using Unified Security Methods (PPUSM)

Cloud computing is defined as a model to access shared computing resources through network in a manner which is ubiquitous, on demand, requires less time for provision and release of resources and requires minimum intervention of management authorities. With such flexibility there arise two problems of data privacy and data security which are open research problem. The first problem of privacy says that how a user's data can be stored such that only authorized persons gets access to it. The problem of security demands the security of data in such a manner that not only on storage but also in between transition of data on network the data will be useless for intruders. In this paper we address both of the problems simultaneously. Specifically, we present a model for privacy and security such that the security is provided by encrypting the data at the owner end and then putting it on the cloud while the privacy is provided by a secured key exchange between the owner and the user. Our model is such that the data remains in the encrypted form throughout the cloud, including network access and hence there is no chance of its misuse.