Key Management for protection of health care Data of Multi-user using Access control in Cloud Environment

Storing an organization's database at an external service provider has become extremely common. This popular practice is called as Database Outsourcing, in which, data encryption, crypto key, and access control are very important security issues, especially if the data owner wishes to publish his data for external use. In this paper, implementation & present performance of statistical analysis of approaches for encrypting/decrypting data using FPE, FF1 with less computation and resource time, implementation of access control through selective encryption and providing secure access and sharing services for multi user's data using key distribution in the client side and access control lists is discussed. The primary goal of this paper is no requirement of re-distribution of keys or re-encryption of data for any administrative actions (updating access rights or adding/deleting users).