Integrity verification of outsourced files using Hadoop

In cloud computing environment the owners store their data from their local system to the cloud storage. More data owners store large data into the cloud storage. New security challenges are there, when owner store their data in the cloud storage ie the data owner may be bothered that the data could be misplaced or modify in the cloud storage. This is because in any infrastructure the data loss may happen due to hardware and software failure and human error. Sometimes, the cloud service providers itself may remove the data which has not been used or not often used to enlarge the storage space. We recommend a new scheme to validate the availability and integrity of the outsourced files which uses the checksum value and is implemented using Hadoop. The proposed method requires less computation and storage.