AN ENHANCED ACCESS CONTROL MODEL TO ENCRYPTED DATA BASED ON AN XACML FRAMEWORK IN CLOUD ENVIRONMENT

Cloud computing is a cutting-edge innovation for improving and developing plans of action in associations.
It tends to be utilized for giving programming and framework administrations sent in data focuses.
Encryption of data by its owner and saving them on the cloud causes many efficiency and secrecy issues. In
Cloud computing, a client who has approved certifications ought to be able to get to classified data, such as
data owners or cloud providers. In conventional techniques for making data secure, data are encrypted and
are kept in trusted hosts and their access is constrained by an access control policy. If the cloud server is
penetrated from unapproved clients, the secrecy of touchy data will be uncovered. This paper proposes an
enhanced cloud access control approach over encrypted data utilizing an XACML framework system and
proof of ownership (POW) procedures. The proposed model controls the access over encrypted data by
identifying that the user, who sends requests for accessing the encrypted data, is authorized or not
dependent on his/her attributes stored in the XACML policy. By applying the proposed XACML
framework, the cloud administrations will play out its concurred capacities with forestalling data spillage,
data misfortune, and maltreatment of cloud administrations.