Profile centric modelling

Despite the common use and the popularity of cloud computing paradigm, significant challenges are inherent to this concept, especially when we talk about storage of sensitive data via insecure internet network. In this paper, we look at the problem of protecting data from unauthorised access in the context of filing system. In today's information technology, many models of access control have been proposed like mandatory access control (MAC), discretionary access control (DAC), role-based access control (RBAC) and the latest one the UCON_ABC. The UCON_ABC is very suitable for the context of cloud computing but it does not give any implementation method. That is why we present in this paper the profile centric access control model, defined by the access profile which is the combination of (authorisation, obligation and condition) in order to resolve the implementation problem of UCON_ABC. The proposal is validated and implemented over Hadoop distributed file system.