Cloud Computing is one of the emerging technologies in Computer Science. Cloud provides various types of services to them. In the Private Cloud Computing the major concern is to securing data/files and also providing privacy. Storage as a Service is generally seen as a good alternative for a small or midsized business that lacks the capital budget and/or technical personnel to implement and maintain their own storage. Currently, the service providers that provides cloud storage, like Dropbox provides security by server side data encryption.