The new IP Multimedia Subsystem (IMS) provides an overlay architecture for IP based core networks and enables the efficient provision of an open set of potentially highly integrat...
Instant Messaging is in addition to Web and Email the most popular service on the Internet. With xOperator we demonstrate the implementation of a strategy which deeply integrates I...
Instant Messaging (IM) is in addition to Web and Email the most popular service on the Internet. With xOperator we present a strategy and implementation which deeply integrates Ins...
This paper describes a conceptual model for attribute aggregation that allows a service provider (SP) to authorise a user’s access request based on attributes asserted by multip...
David W. Chadwick, George Inman, Nate Klingenstein
Several recent security-typed programming languages, such as Aura, PCML5, and Fine, allow programmers to express and enforce access control and information flow policies. Most of ...