Dynamic Updating Policies for Access Control in Cloud Computing

Attribute Based Encryption (ABE) is very important technique for maintaining the security of the information in the cloud system, however policy updating with the help of attribute based encryption in a cloud is a very tough job for constructing access control schemes. In this project I am just trying to let the data owners can check the old access policy in the cloud and re- encrypt the data under new access policy if needed and then send the data again to the cloud. Usually this method can cause the high communication blockage and heavy computation burden. But in this paper I am proposing a novel scheme for dynamic policy updating with efficient access control in the cloud. I am trying to make policy updating method for ABE systems; this method can avoid the transmission of encoded data with old access policy. Finally, I am proposing an effective and secure methodology which will help the data owner to check whether the cloud server updated the encoded data correctly or not.