In this paper, we introducing a third party auditor (TPA), whichwill keep track of all the files along with their integrity. The task of TPA isto verify the data, so that the user will be worry-free. Verification of datais done on the aggregate authenticators sent by the user and Cloud ServiceProvider (CSP). For this, we propose a secure cloud storage system whichsupports privacy-preserving public auditing and block less data verificationover the cloud.
Keywords:-Third partyauditor (TPA), data integrity, public auditing, privacy preserving, cloudstorage, block less data verification.