Cloud Storage Confidentiality and Secrecy using Encryption, Obfuscation Techniques: A survey

Cloud computing provides an vast amount of virtual storage to the users for storing its valuable data. Which helps to small and medium scale industry to use with pay as you go basis.. Users’ information are stored in the premises of Cloud service provider in public environment. Data stored in the cloud storage is available to all the users from anywhere. This will lead to the data safety issue in cloud storage for both Users and for providers. If the privacy of cloud user’s data is broken, then it will affect on reputation of Providers. Cloud data security can be discussed using various parameters like Data on rest i.e when available on provider’s premises, Data in transition i.e. when it is available on network as well Database of providers where all confidential information related to users are stored. To provide the confidentiality, the most common used technique is encryption. But encryption alone doesn’t provide Enough protection to the data in the cloud storage.To have efficient cloud storage confidentiality various authors proposed different scheme. In this paper our aim is to focus on various scheme that are provides security to users data which available on server which increase trust level of user towards Cloud services providers.