Secure Data Storage in the Cloud by using Data Perturbation Method

Now a day’s use of cloud computing infrastructures is increased. Cloud provides solution to save the cost of query services as it provides the advantages of scalability and cost saving. But some data owner hesitates to store the sensitive data on the cloud as the service providers are curious i. e. they are untrusted. Data owner wants to ensure privacy of query and confidentiality of data when they wish to move to the cloud. A secured query service is nothing but it should provide processing of query efficiently with the reduced workload of in house infrastructure to utilize advantages of cloud computing. For protected data in the cloud there is needed to provide efficient and secure query processing. RASP data perturbation method achieves this by combining random noise injection and order preserving encryption. RASP data perturbation is used to provide secure and efficient knn and range query services.