The International Journal of Innovative Research in Computer and Communication Engineering
Cloud computing, as associate rising computing paradigm, permits users to remotely store their knowledge during a cloud, thus on relish services on-demand. With fast development of cloud computing, additional and additional enterprises can source their sensitive knowledge for sharing during a cloud. To stay the shared knowledge confidential against untrusted Cloud Service Suppliers (CSPs), a natural approach is to store solely the encrypted knowledge during a cloud. The key issues of this approach embody establishing access management for the encrypted knowledge, and revoking the access rights from users after they are not any longer licensed to access the encrypted knowledge.