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Encryption Schemes of Cloud Computing: A Review

A scenario in which the network can be accessed on- demand so that the resources available within it can be used in convenient manner is known as cloud computing. It is also possible for the user to store the data and have access to various types of services. Depending upon the usage of resources, the users have to pay. Several data encryption techniques have been proposed by researchers to ensure the security of important data available in the cloud scenarios. This study focuses on reviewing full disk encryption (FDE) as well as the fully homomorphic encryption (FHE) techniques. It is seen through the studied evaluations that the efficiency of FDE is less as compared to FHE. However, the reliability of FHE is reduced due to the key management and sharing issues faced in this technique.