Tools for secure systems development with UML

For model-based development to be a success in practice, it needs to have a convincing added-value associated with its use. Our goal is to provide such added-value by developing tool-support for the analysis of UML models against difficult system requirements. Towards this goal, we describe a UML verification framework supporting the construction of automated requirements analysis tools for UML diagrams. The framework is connected to industrial CASE tools using XMI and allows convenient access to this data and to the human user. As a particular example, we present plugins for verifying models defined using the security extension UMLsec of UML. The verification framework allows advanced users of the UMLsec approach to themselves implement verification routines for the constraints of self-defined stereotypes. In particular, we focus on an analysis plug-in that utilizes the model-checker Spin to verify security properties of cryptography-based systems.