Date Added: Sep 2012
Cloud computing has emerged as a popular model in computing world in which resources of the computing infrastructure are provided as services over the Internet. A cloud computing platform dynamically provisions, configures, and deprovisions servers as needed. Promising as it is, this paradigm also brings forth many new challenges for data security and access control when users outsource sensitive data for sharing on cloud servers, which are not within the same trusted domain as data owners. Data security and access control is one of the most challenging ongoing research work in cloud computing.