A panoramic overview on fast encryption techniques for outsourced data in mobile cloud computing environment

Nowadays, Cloud computing is an emerging internet based computing system, which enables users to remotely store their data in a server and provide services according to their need. Many of the devices which uses cloud computing are mobile these days. Here data security and privacy became the major issues in this contest. A secure data access control mechanism must be provided before cloud users as most of the users have to outsource sensitive data to the cloud for storage. In recent days many of the MNCs and other famous organization uses the cloud services for data sharing, data storage, data manipulation etc. As there are lots of confidential corporate data being shared on cloud servers, it is very important to provide an efficient encryption system to encrypt outsourced data with a fine-grained access control. In the cloud environment encryption can be the best option to secure data out there and such data can be either Private data or Public data. The public data can be shared among trusted clients that provide an open environment to connect with organization or with the data owner. Private data is client's confidential data and it need more security and privacy so the data must be transferred in encrypted form. In this paper we can see the different encryption techniques and its variants which are currently being used also the possible future works which can be improvised to develop a better security and privacy oriented encryption techniques is discussed.