Data Encryption and its Impact on Performance of Cloud Applications

As cloud computing becomes prevalent, sensitive information are being increasingly centralized in to the cloud. For the protection of data privacy, sensitive data has to be encrypted before outsourcing in to the cloud environment. Several techniques can be used for providing security in Cloud systems including encryption and other access control mechanism. Usually the additional overhead and penalties caused by these mechanisms is ignored. In this paper, we reinvestigate the issue of the impact of encryption on the through performance of Cloud system. The purpose of this paper is also to present the results of investigations conducted by the authors regarding the emerging data security and the impact of excessive data encryption on the performance of Cloud system and discuss some guidelines for encryption of data in cloud system.

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