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We present a reliability certification scheme in which services are modeled as discrete-time Markov chains. A machine-readable certificate is issued to the service after validating its reliability properties, and validity of the certificate is verified using constant run-time monitoring. In addition, we present a solution that allows users to search and select services with a given set of reliability...
Security certification schemes for Service-Oriented Architecture~(SOA) extend service specifications with the evidence that a service supports a set of security properties and provides a given level of assurance. However, services are subject to continuous refinements, and uncontrolled changes can easily invalidate existing certification results and require re-certification from scratch, with high...
We present a solution for test-based security certification of services that models the service under certification using a Symbolic Transition System (STS). The STS-based model is readily derivable from the Web Service Description Language (WSDL) and Web Service Conversation Language (WSCL) of the service, and can be enriched with details about test-based conditions on inputs and outputs, implementation...
Following the Service-Oriented Architecture (SOA) and the Cloud paradigms, an increasing number of organizations implement their business processes and applications via runtime composition of services made available on the cloud by single suppliers. This scenario however introduces new security risks and threats, as the service providers may not provide the level of assurance required by their customers...
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