Dr. rer. nat.

Ritter, Tom

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  • Publication
    Approaches to automation and interoperability in systems engineering
    ( 2014)
    Ritter, Tom
    Creating large and complex systems typically involves a number of potentially geographically separated development teams and a number of various different tools. These two aspects are two important dimensions of complexity, which should be considered when planning large system engineering efforts. The importance of these aspects has become increasingly eminent and recent approaches try to handle these issues. Among them are OSLC (Open Services for Lifecycle Collaboration) and ModelBus®. Those approaches address the platform aspect of system engineering on complementary level of abstraction and are a step forward with respect to integration and interoperability challenges. These approaches set de facto standards, which is important to increase efficiency in systems engineering. Based on these considerations big European initiatives like the ARTMIS Joint Undertaking projects CRYSTAL and VARIES started to work on a Reference Technology Platform with the goal to improve interoperability. The talk will present challenges and solutions in large-scale system engineering efforts and focuses on the aspect of collaboration and standardisation.
  • Publication
    High-level design process for NATO high assurance ABAC guard
    ( 2013)
    Wrona, Konrad
    ;
    Oudkerk, Sander
    ;
    Hein, Christian
    ;
    Menz, Nadja
    ;
    Ritter, Tom
    In the paper we describe the development process for the High Assurance ABAC Guard (HAAG), which is one of the important security enablers the NATO future information sharing architectures, including Information Exchange Gateway Scenario D and Future Mission Networks. The HAAG implements Attribute-based Access Control (ABAC) for information requests, and enforces Content-based Protection and Release policies. Our system design process incorporates a structured way of collecting requirements and takes into account a security risk assessment of the system. The process is based on industry standards and best practices. It is accompanied by a definition of a Common Criteria Protection Profile, which captures security requirements for the HAAG. All phases of the system design process are perfor med using an integrated modelling environment based on Eclipse and open-source tools. The environment allows us to build and maintain a relatively complex model and, to a large extent, automatically generate the required design documentation.