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Adaptable Situation-Aware Secure Service-Based (AS3) Systems Introduction Service-Oriented Architecture (SOA) has the
major advantage of enabling rapid composition of distributed applications,
and will be a new-generation computing architecture for many critical
global service-based systems, such as Global Information Grid (GIG)
and Cyber Infrastructure. In these systems, various capabilities are provided
by different organizations as services and interconnected by
various types of networks, including wireless (infrastructure or ad hoc) and
wired networks. These services can be integrated following
specific workflows, which are necessary for users to exploit
these services to fulfill specific mission goals. For critical global
service-based systems, high confidence and adaptability
are of prime concern in order to ensure the users that they can use these
systems anywhere, any time using various devices, knowing that their
confidentiality and privacy are well protected and the systems will adapt to
satisfy their needs in various situations. Hence, these systems must be adaptable,
situation-aware and secure. Although various
techniques have been proposed to improve the security and dynamic service
composition of service-based systems, no effective enabling techniques for Adaptable
Situation-aware Secure Service-based (AS3) Systems are
available. In this project, we are conducting basic research, which
will result in a set of new and effective techniques for rapid development,
deployment and operations of AS3 systems with hierarchical
situation-awareness capability, flexible policy-based security,
and adaptive service composition and management capability. The
techniques to be generated are for (i) situation-awareness requirement
specification and verification, runtime situation analysis and autonomous
situation-triggered service coordination, (ii) security policy specification
and verification, and runtime policy enforcement and diagnosis, and (iii)
service semantic specification and checking, automated service generation,
intelligent service discovery, adaptive service contraction and composition.
The three PIs' research groups with different expertise on
situation-awareness, security, model checking and service composition will
work in concert on this research project. Specifically, we are working on the
following aspects: ·
To achieve hierarchical
situation-awareness, we plan to establish a hierarchical
situation-awareness model, which combines OWL ontology and situation-aware
ambients, and develop situation-awareness specification and verification
techniques based on the proposed model. With these results, we will generate
efficient agent-based hierarchical distributed situation analysis and
situation-triggered service coordination methods. ·
To achieve flexible
policy-based security, we will establish an
security policy ontology and combine it to Secure Operations Language (SOL)
developed at Naval Research Laboratory (NRL). A security policy verification
technique based on SALSA or other tools will be developed to ensure the
correctness and consistency of policy specifications. A distributed trust
management mechanism and an abduction-based diagnosis and recovery engine
will be developed for runtime policy enforcement. ·
To achieve adaptive
service composition and management, we will first establish a service ontology, a service specification language and
an intelligent ontology-based service discovery protocol. Then an adaptive
service contraction and composition technique will be developed to automate
the workflow synthesis and distribution. A service semantic checking approach
will be developed to facilitate the adaptive multiparty service
composition. The expected results of this research project should greatly improve situation-awareness, security and adaptability of service-based systems. We anticipate that our expected results can easily be integrated with other ongoing research effort on service-based systems, such as Web Services and GIG Enterprise Services (GES). The software tools generated from this project will enhance the rapid development of adaptable situation-aware secure service-based systems. |
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Welcome to AS3! |
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