Autonomic communication and computing is the new paradigm for dynamic service integration over a network. In an autonomic network, clients may have the right credentials to access a service but may not know it; equally, it is unrealistic to assume that service providers would publish their policies on the Web so that clients could do policy evaluation themselves. To solve this problem, the chapter proposes a novel interactive access control model: Servers should be able to interact with clients asking for missing credentials, whereas clients may decide to comply or not with the requested credentials. The process iterates until a final agreement is reached or denied. Further, the chapter shows how to model a trust negotiation protocol that allows two entities in a network to automatically negotiate requirements needed to access a service. A practical implementation of the access control model is given using X.509 and SAML standards.
Complete Chapter List
Peter F. Linington
Djamel Khadraoui, Francine Herrmann
Michéle Germain, Alexis Ferrero, Jouni Karvo
Jean-Henry Morin, Michel Pawlak
Francine Herrmann, Djamel Khadraoui
Fredrik Vraalsen, Tobias Mahler