Data Stream Controller for Enterprise Cloud Application

Cloud computing is an emerging computing paradigm where computing resources are provided as services over Internet while residing in a large data center. Even though it enables us to dynamically provide servers with the ability to address a wide range of needs, this paradigm brings forth many new challenges for the data security and access control as users outsource their sensitive data to clouds, which are beyond the same trusted domain as data owners. The occupier need not be concerned with how the Paas system achieves expansion under high load.MAC systems differ as security policy is defined for the entire system, typically by administrators. Information flow control (IFC) is a MAC approach, developed originally from military information management methodologies. IFC can be used to enforce more general policies, using appropriate labeling and checking schemes. The labels can be used to manage both confidentiality and integrity concerns, tracking �secrecy� and �quality� of data, respectively. Decentralized Information Flow Control (DIFC) is an approach to security that allows application writers to control how data flow between the pieces of application and the outside world. As applied to privacy DIFC allows un trusted software to compute with private data while trusted security code controls the release of that data. As applied to integrity DIFC allows trusted code to protect un trusted software from unexpected inputs.