DYNAMIC PROVABLE DATA POSSESSION IN MULTI CLOUD ENVIRONMENT

Abstract

In multi cloud environment, the remote data integrity checking has major part in the field of security. It ensures Data Integrity on User Uploaded data in Multi cloud maintaining security and privacy on cloud data and also provide access confidentiality through dynamic re-allocation of data at every user access. In our proposed systemfile is split into blocks using Dynamic Block generation Algorithm and stored in a Multi cloud environment. File Allocation Table (FAT) File System has proper Indexing and Metadata’s for the different Chunks of the Cloud Storage. If Attacker corrupts data in Multi cloud, the continuous auditing process helps the Verifier to perform Block level and File level checking for remote data Integrity Checking using Verifiable Data Integrity Checking Algorithm. Cloud provides random blocks to Verifier for Integrity Checking which is to protect user privacy from Verifier (Third Party). File recovery is done by the Verifier automatically if the data gets corrupted during checking. User can complaint Cloud for File Recovery. At every access of the file by the user, blocks of the data will be dynamically reallocated between the Cloud Servers.