Promising Solutions for Multicopy Dynamic Data Possession in the Cloud

Plenty of organizations are increasingly outsourcing their data into the cloud service providers (CSP). Because of the safety and security purpose of their data many customers want their data replicated and store on the multiple servers among multiple data centers. In this paper we presents secured and guaranteed multi copy dynamic data possession in the cloud (SG-MDDP). The SG-MDDP scheme consists of many features like: 1) The Scheme gives an efficient evidence to the customer that CSP is storing all the copies that is agreed upon the service contract that it not storing lesser copies by cheating customers; 2) The scheme supports the block level dynamic data operations. After outsourcing the data to the CSP the customers can do operations like insertion, deletion and modifications; 3) In this scheme only authorized users can access copies of data which has been in the servers by the cloud service providers. Before outsourcing the data to the CSP all the data will be in the encrypted form, only authorized users can decrypt that data by using secret key. As we already know that the customers data which has been stored in the servers will in encrypted form so it will provide very good security for data copies.