Ensuring data retention and freshness in hybrid cloud environment over multicast communication

Abstract

substantially. Generally it is identified as six distinct phases. The first phase newlinecorresponds to the traditional terminal era, where mainframes shared by many newlineusers did all the hard computing work (Bell 1993). In phase two, the newlineubiquitous personal computers took over room-sized computers. In the next newlinephase, local networks appeared. Phase four evolved with the use of newlineinterconnection of local networks, which ultimately resulted in the Internet. In newlinethe following phase came distributed computing with the different nodes newlineorganized, resulting in greater efficiency (Tanenbaum and Steen 2002). Finally, newlinein phase six, cloud computing (Hayes 2008) made the scene, opening the door newlineto access a potentially unlimited amount of computing resources, in a scalable newlineand simple way. newlineIn the multicast communication, the group members are allowed to newlinecreate or upload files, request for proof check, view the contents of the file in newlinea secure manner and allows them to audit the files which they stored in the newlinecloud. If the cloud service provider modifies the content of the cloud, it will newlinebe detected during the proof checking phase, which is performed before the newlineuser attempts to view the contents of the file. Further, user can edit newlinedynamically with new content, which also gets encrypted and stored in the newlinecloud. User can download the content and later upload it with changes. newlineThe system support closed dynamic group ie, only the members of newlinethe group can access the stored data. At the same time, the new user can newlineeasily join the group and the existing user can leave the group. A secure key newlinedistribution protocol for multicast communication on the cloud is used to newlineovercome the security threats. newline