Abstract:

Among so many definitions of  cloud computing,  the most probable  accepted definition should be as ‘Cloud computing is a facilities given model that enables with convenient, on-demand network access  with shared pool of  well configured computing resources like  services, applications , servers, storage and network) that should be rapidly provisioned and deliver with minimal cost & management effort’. The privacy issues in cloud computing are noticed, especially the privacy and security challenges for data security in the cloud storage. The main problem is to define and assign keys to users are key concerned. To minimize this problem a proposed scheme is effectively based on the observations that are in practical application situations. The security and privacy requirements are formally well defined and the achievable proposed scheme is proven secure under a normal assumption in the standard model. A privacy-preserving RIC protocol which achieves public verifiability & authenticity without disclosing any stored information is proposed.

Keywords: Cloud computing, Data integrity & Privacy, RIC protocol, PMOW scheme.