As distributed applications such as Grid and enterprise systems scale up and become increasingly complex, their authorization infrastructures—based predominantly on the...

The talk defines the secondary and approximate authorization model (SAAM). In SAAM, approximate authorization responses are inferred from cached primary responses, and therefore...

Traditional authorization mechanisms based on the request-response model are generally supported by point-to-point communication between applications and authorization servers....

As distributed applications increase in size and complexity, traditional authorization mechanisms based on a single policy decision point are increasingly fragile because this...

The request-response paradigm used for developing access control solutions commonly leads to point-to-point (PTP) architectures, with security enforcement logic obtaining...

The request-response paradigm used for access control solutions commonly leads to point-to-point (PTP) architectures, with security enforcement logic obtaining decisions from...

In currently deployed large enterprise systems, policy enforcement points (PDPs) are commonly implemented as logically centralized authorization servers. This centralization...

The request-response paradigm used for distributed access control solutions commonly leads to point-to-point (PTP) architectures with security enforcement logic obtaining...

The way security mechanisms for distributed applications are engineered today has a number of serious drawbacks. As a result, secure distributed applications are (a) very...

The request-response paradigm used for access control solutions commonly leads to point-to-point (PTP) architectures, with security enforcement logic obtaining decisions from...

The request-response paradigm used for access control solutions commonly leads to point-to-point (PTP) architectures with security enforcement logic obtaining decisions from the...