Data security frameworks in cloud

Cloud computing provides a wide range of services to consumers with lesser investment which are delivered over Internet. Security is considered to be a significant problem in the development of cloud computing which is actually an obstacle to the growth of cloud is computing. The most challenging task in a shared environment like cloud is data security. Cloud enables the clients to store data on remote servers thereby preventing direct control over this data. Data in cloud is not controlled by the data owner. So, proper data security mechanism must be maintained. A new hybrid model for data security in cloud targets encrypting data and ensures that the proper policies are enforced. The major objective is to transmit, store and retrieve data in a secure manner. The main focus of this paper is to highlight the various encryption techniques and data integrity proofs. Speed of processing and computational efficiency of encrypting data should also be considered since the cloud environment involves large amount of data transfer, storage and usage. This paper presents the survey about data security in cloud computing.