Enabling Cloud Storage Auditing With Verifiable Outsourcing of Key Updates

Abstract

Focus on the way to create the key updates as transparent as doable for the consumer and propose a replacement paradigm called cloud storage auditing with verifiable outsourcing of key updates. during this paradigm, key updates is safely outsourced to some licensed party, and therefore the key-update burden on the consumer are going to be unbroken bottom. Specifically, we tend to leverage the third-party auditor (TPA) in several existing public auditing styles, legit play the role of licensed party in our case, and create it in charge of each the storage auditing and also the secure key updates for key-exposure resistance. In our style, TPA solely has to hold Associate in nursing encrypted version of the client’s secret key, whereas doing of these burdensome tasks on behalf of the consumer. The consumer solely has to download the encrypted secret key from the TPA once uploading new files to cloud. Besides, our style conjointly equips the consumer with capability to more verify the validity of the encrypted secret keys provided by TPA. of these salient options square measure fastidiously designed to form the complete auditing procedure with key exposure resistance as clear as doable for the consumer.