We present tool-support for checking UML models and C code against security requirements. A framework supports implementing verification routines, based on XMI output of the diagrams from UML CASE tools, and on control flow generated from the C code. The tool also supports weaving security aspects into the code generated from the models. Advanced users can use this open-source framework to implement verification routines for the constraints of selfdefined security requirements. We focus on a

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... ification routine that automatically verifies crypto-based software for security requirements by using automated theorem provers.