AN ENHANCED DATA CONTROLLING METHOD IN CLOUD

Cloud computing is very widely used. Cloud storage is scalable flexible and gives high quality data storage and services. The data owners can upload their files to the cloud. But this cannot trust completely. The data owners want to make sure that their file didn't outsourced to cloud remote servers for alterations. As a solution to this problem RDPC (remote data possession checking) protocol has been used. This paper presents a new RDPC which is more efficient and it is based on homomorphic hash function. This will prevent attacks like forgery, replace, and replay based on security model. ORT(operation record table) is for tracking all the operations of every file block. The ORT accessing cost will be approximately constant. The overall performance analysis will give idea about computational and communication costs. This scheme is very much feasible for the real time applications.