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An extensible framework for practical secure component composition in a ubiquitous computing environment

Establishing the security properties of executable code provides an important challenge for advocates of ubiquitous computing. We provide a framework that utilises component composition techniques in order to establish such properties for a composed application in a ubiquitous environment. The framework accounts for the need to establish the properties of individual components, and draws on composition results in order to establish overall properties for composed applications. The framework utilises XML composition templates to provide extensibility, so that new composition results will further enhance its effectiveness.