Open and dynamic business environments require flexible middleware that can be customized, adapted and reconfigured dynamically to face the changing environment and requirements. In this respect, the mechanism for composing middleware services with application code has an important impact on the kinds of adaptations that can be supported. This paper studies this problem in the context of security middleware. A bus-based architecture for integrating security middleware services is proposed and a qualitative comparison of the flexibility of the approach with an alternative AO-middleware-based approach is presented.
['Tom Goovaerts', 'Bart De Win', 'Wouter Joosen']
A comparison of two approaches for achieving flexible and adaptive security middleware