The document discusses security considerations for semantic web services. It describes how semantic web services add formal descriptions to allow automated discovery, composition and invocation of web services. The document outlines key security dimensions like authorization, privacy and trust that are important in this context. It proposes a semantic policy framework to address security requirements through semantically-described policies and addresses some challenges in standardizing approaches.

1. Security in Semantic Web Services : Role of Security , Authorization , Privacy and Trust in Semantic Web Nima Dokoohaki OASIS Adoption Forum London 2006

4. Selection Invocation Composition Ontology Management Publishing Deployment Discovery Activities Register Reasoner Decomposer Invoker Matchmaker Architecture Pre-condition input Cost output Atomic Service Post-condition Composite Service Category Service Ontology SWS

19. Semantic Web Services Semantic Execution Environment eGovernments, Businesses, Citizens OASIS Security Standards OASIS Web Services Works OASIS Semantics Effort

20. Semantic Requirements Requester’s Authorization information Service Requester Distributed Registry (UDDI / ebXML RR) Service Discovery Distibuted Ontology Repository Policy Ontology Domain Ontology Trust Negotiator Trust Warehouse Distributed Trust (Web of Trust) Semantic Web Service Service sends requester’s authorization info to requester Trust Negotiation Service Invocation Authorization Manager Semantic Execution Environment