Algorithm for Back-Up and Recovery of Data Stored on Cloud along with Authentication of the User

Cloud offers various Services to its users. A huge amount of Data is generated everyday while working in Cloud Computing. The data should be stored properly on the cloud servers. In case this data is lost from the server there should be a mechanism to recover this data. One such approach is put forward in this paper. The proposed scheme allows storing the data on the cloud server and the remote server simultaneously while taking a backup. On loss of the main file, the data is recovered from the remote server. For the backup and recovery process to be secure, user authentication based on attributes, secret keys is done so that the transaction is safe and authenticated.