• S.Shabana
• G. Vijaya Kumar

One of the important service of cloud computing is cloud storage. The security of cloud storage faces many critical issues, among which key exposure resistance is one. To solve this issue, the best way is to use key redesign. Previously many existing solutions required client to update his secret key by himself that too for every time period which brings up a burden to the clients especially people from various organizations whose main motive is different from this issue. So, making the key updates transparent for client will be beneficial. Thus proposing a new paradigm called cloud storage auditing. Examining each procedure in the paradigm makes entire process secure and safe. The proposed protocol determines that key updates are safely outsourced to some authorized party known as TPA (Third party auditor). TPA who acts as interface between client and cloud performs all update operations on behalf of client but significantly TPA holds only encrypted version of key so that key is not exposed to anyone other than the owner. The client when needed to upload files to cloud can download the updated secret key from TPA and decrypt it. Apart from this, our design also provides client with a option of verifying the validity of encrypted secret key provided by TPA. These features help client to complete his cloud storage works in a secure method. A security model is designed to formulate this paradigm along with performance simulation.

Cloud storage, Cloud storage auditing, Key update, Outsourcing computation

"Effective Approach for Secure Outsourcing of Key Updates in Cloud ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.288-296, July-2018, Available :http://www.jetir.org/papers/JETIR1807762.pdf

"Effective Approach for Secure Outsourcing of Key Updates in Cloud ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp288-296, July-2018, Available at : http://www.jetir.org/papers/JETIR1807762.pdf