Science and Development Network (SciDev.Net)
Cloud computing is the next generation of platform over which information and services can be offered to the user in a more convenient and transparent way. On the other hand, however, commercial interests will cause information proliferation, resulting in over-supply of useless information to the user and waste of precious systems and network resources. The problem of controlling such information proliferation has thus received a great deal of interests in recent years. In this paper, the authors propose an access control model for negative authorization to provide the user with the ability and flexibility of specifying the objects to which access is not desired through the means of negative authorization.