Trust Management in Context-Aware and
  Service-Oriented Architectures (Invited Talk)

                                 Ricardo Neisse

        Fraunhofer-Institute for Experimental Software Engineering (IESE)



Extended Abstract
In service-oriented architectures, services are the basic building blocks to dy-
namically compose complex business process across multiple administrative do-
mains. The main goal is to support companies in the outsourcing of services
to service providers that best suit their business needs, and dynamically re-
assign the services to other providers when changes in the business are neces-
sary. The dynamic re-assignment of service providers in an open service market
will only be successful if appropriate trust management mechanisms are put in
place to provide guarantees that the desired service requirements are fulfilled.
In context-aware and service-oriented architectures, there are additional trust
requirements, because this type of service-oriented architecture makes use of
privacy sensitive end-users’ information collected from sensors and information
providers surrounding the end users’ physical space.
    In this talk, I will report on trust and policy management issues in perva-
sive and service-oriented architectures. I will briefly discuss the social and le-
gal requirements, describe the trust and policy management challenges we have
identified, and introduce our trust and policy management approach to support
end-users and service consumers in this service scenario. I will also comment on
the ongoing research in the area of trustworthy enforcement and management of
policies using the support provided by the Trusted Computing Platform.
    Keyworks: Context, trust, policy, management, privacy, pervasive systems,
service-oriented architectures.