Secure Communication Layer for Scalable Network of Learning Object Repositories
Advanced Information and Knowledge ProcessingE-Learning Networked Environments and Architectures(2011)
摘要
The eduSource Communication Layer (ECL) defines a set of services, middleware, and communication conventions that enable repositories and tools to communicate with each other. ECL was designed and implemented within the scope of the recommendations in the IMS DRI specification. The ECL has been deployed world-wide and connects repositories in Canada, USA, Australia, UK and Europe. In this chapter we describe the design of ECL, its architecture and middleware components. In the second part we describe novel ECL security infrastructure (ECL-SI) for web services that provides the security framework for object repositories based on a trust federation. The security solution defines security profiles, infrastructure services, and middleware component for a low-barrier adoption by existing repositories. Although this infrastructure can scale to large networks it is particularly sensitive to the needs of medium and small organizations, which have complex attributes and accessing policies.
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