XeNA: an access negotiation framework using XACML

XeNA is a new model for the negotiation of access within an extended eXtensible Access Control Markup Language (XACML) architecture. We bring together trust management through a negotiation process and access control management within the same architecture. The negotiation process based on resource classification methodology occurs before the access control management. A negotiation module at the core of this negotiation process is in charge of collecting resources required to establish a level of trust and to insure a successful evaluation of access. The access control management is based on an extended RoleBased Access Control (RBAC) profile of XACML. This extended profile responds to advanced access control requirements and allows the expression of several access control models within XACML.