TY - JOUR A1 - Hobelsberger, Martin A1 - Mottok, Jürgen A1 - Deubzer, Michael T1 - Modellbasierte Sicherheitsanalysen von Software Architekturen JF - Jahresrückblick 2008 des Bayerischen IT-Sicherheitsclusters Y1 - 2008 ER - TY - JOUR A1 - Hobelsberger, Martin A1 - Mottok, Jürgen A1 - Kuntz, Stefan T1 - Architekturmodellierung: Vergleich von EAST ADL und SAE AADL JF - Hanser Automotive Y1 - 2007 IS - 7-8 SP - 43 EP - 47 ER - TY - CHAP A1 - Sailer, Andreas A1 - Schmidhuber, Stefan A1 - Deubzer, Michael A1 - Hobelsberger, Martin A1 - Mottok, Jürgen T1 - Requirements engineering for a continuous design flow and methodology T2 - 2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg Y1 - 2012 SN - 978-3-8440-1093-0 SP - 76 EP - 79 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Schmidhuber, Stefan A1 - Sailer, Andreas A1 - Deubzer, Michael A1 - Hobelsberger, Martin A1 - Mottok, Jürgen T1 - Overview of the itea2-project amalthea T2 - 2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg Y1 - 2012 SN - 978-3-8440-1093-0 SP - 60 EP - 62 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Fritz, Florian A1 - Schmid, Michael A1 - Mottok, Jürgen ED - Brinkmann, André T1 - Accelerating Real-Time Applications with Predictable Work-Stealing T2 - Architecture of computing systems - ARCS 2020: 33rd international conference, Aachen, Germany, May 25-28, 2020, proceedings N2 - Modern compute architectures often consist of multiple CPU cores to achieve their performance, as physical properties put a limit on the execution speed of a single processor. This trend is also visible in the embedded and real-time domain, where programmers are forced to parallelize their software to keep deadlines. Additionally, embedded systems rely increasingly on modular applications, that can easily be adapted to different system loads and hardware configurations. To parallelize applications under these dynamic conditions, often dispatching frameworks like Threading Building Blocks (TBB) are used in the desktop and server segment. More recently, Embedded Multicore Building Blocks (EMB2) was developed as a task-based programming solution designed with the constraints of embedded systems in mind. In this paper, we discuss how task-based programming fits such systems by analyzing scheduler implementation variants, with a focus on classic work-stealing and the libraries TBB and EMB2. Based on the state of the art we introduce a novel resource-trading concept that allows static memory allocation in a work-stealing runtime holding strict space and time bounds. We conduct benchmarks between an early prototype of the concept, TBB and EMB2, showing that resource-trading does not introduce additional runtime overheads, while unfortunately also not improving on execution time variances. KW - Real-time KW - Parallel programming KW - Work-stealing Y1 - 2020 U6 - https://doi.org/10.1007/978-3-030-52794-5_18 SP - 241 EP - 255 ER - TY - CHAP A1 - Seebauer, Stefan A1 - Jahn, Sabrina A1 - Mottok, Jürgen T1 - Learning from Escape Rooms? A Study Design Concept Measuring the Effect of a Cryptography Educational Escape Room T2 - 2020 IEEE Global Engineering Education Conference (EDUCON): 27-30 April 2020, Porto, Portugal N2 - Experts predict that more IT-Security specialists will be needed in the coming years, but in current higher education in engineering disciplines, this topic is hardly addressed. Newer learning methods such as game-based learning (GBL) are enjoying an increasing popularity as their improvement in the education of subject specific topics can be proven by a variety of studies. We chose Educational Escape Rooms (EduER) as a GBL-tool to impart IT-Security in higher education of engineers. In our Escape Room (ER), the students try to solve puzzles and riddles with learned knowledge on the emphasis of cryptography. This paper first deals with a brief introduction to GBL and EduERs, followed by the design of our ER concept, containing different tasks with focus on the topic of cryptography. The tasks cover different cryptographic methods and hash algorithms, e.g. AES, RSA, SHA3. Afterwards the experimental study is presented. The study of the EduER was carried out with students from the bachelor's program in Electrical Engineering and Information Technology at the OTH Regensburg. The participants were divided into three groups of 5 to 8 persons each. They received a briefing with important information, followed by the ER execution, a debriefing afterwards and an exam-like evaluation sheet to test their learned knowledge. Finally, first basic results are presented. Y1 - 2020 U6 - https://doi.org/10.1109/EDUCON45650.2020.9125333 SP - 1684 EP - 1685 ER - TY - CHAP A1 - Frauenschläger, Tobias A1 - Renner, Sebastian A1 - Mottok, Jürgen T1 - Security Improvements by Separating the Cryptographic Protocol from the Network Stack onto a Multi-MCU Architecture T2 - Architecture of Computing Systems - ARCS 2020: 33rd international conference, Aachen, Germany, May 25-28, 2020, proceedings N2 - The number of IoT devices in SCADA and ICS systems is rising quickly, especially in the domain of critical infrastructures. But these kinds of systems are performing mission critical tasks like controlling devices in industrial facilities or substations in the smart grid. Therefore, they are subject to a lot of regulatory standards. Yet, to provide remote access over the internet, special architectures are developed to integrate a network interface into these devices without inferring with the actual functionality. However, these architectures either lack security measures against cyber-attacks or do not offer the necessary performance for time-critical communication interfaces. To solve that, an architecture consisting of three units is introduced in this paper to provide a network interface with extensive security measures and a high performance. The main feature is the isolation of the cryptographic functionality onto an additional MCU. After proposing the basic concept, the paper presents many implementation details. Based on the current state of implementation, a concept validation of the realized architecture is described. KW - Cyber-security KW - Functional safety KW - Network security KW - Industrial Internet of Things KW - Industrial Control System KW - Supervisory Control and Data Acquisition System Multi microcontroller setup Dos prevention Critical infrastructures KW - Multi microcontroller setup Dos prevention Critical infrastructures KW - Dos prevention KW - Critical infrastructures Y1 - 2020 U6 - https://doi.org/10.1007/978-3-030-52794-5_14 SP - 185 EP - 199 PB - Springer International Publishing ER - TY - CHAP A1 - Klopp, Marco A1 - Gold-Veerkamp, Carolin A1 - Abke, Jörg A1 - Borgeest, Kai A1 - Reuter, Rebecca A1 - Jahn, Sabrina A1 - Mottok, Jürgen A1 - Sedelmaier, Yvonne A1 - Lehmann, Alexander A1 - Landes, Dieter T1 - Totally Different and yet so Alike: Three Concepts to Use Scrum in Higher Education T2 - Proceedings of the 4th European Conference on Software Engineering Education (ECSEE '20): June 2020, Seeon/Bavaria, Germany N2 - Software process models are important in software projects in order to give the work of a project guidelines or a framework. However, teaching process models in higher education seems to be quite challenging. This has to do with the fact that undergraduates have no experience with projects in which process models are used. The theoretical mediation of process models is initially on a very abstract level. For this reason, we chose to combine two didactic approaches, namely problem-based learning and project work. Various traditional plan-driven process models have been expanded in courses in Software Engineering with agile process models. The Scrum Framework is the focus of consideration of this paper. Three Universities of Applied Sciences which cooperate in the EVELIN project focused on Scrum as a process model and integrated it into their teaching. Since the respective concepts of implementation differ, they should be presented and compared in this article to presents some practice approaches. The goal of this presentation of is a uniform evaluation in order to obtain insights from different perspectives. This comparison can draw conclusions for possible necessary improvements of the respective concepts. Y1 - 2020 U6 - https://doi.org/10.1145/3396802.3396817 SP - 12 EP - 21 ER - TY - CHAP A1 - Dentgen, Manuel A1 - Renner, Sebastian A1 - Mottok, Jürgen ED - Brinkmann, André ED - Karl, Wolfgang ED - Lankes, Stefan ED - Tomforde, Sven ED - Pionteck, Thilo ED - Trinitis, Carsten T1 - Equally Distributed Bus-Communication Access Rights for Inter MCU Communication Using Multimaster SPI T2 - Architecture of Computing Systems - ARCS 2020: 33rd international conference, Aachen, Germany, May 25-28, 2020, proceedings T2 - Lecture notes in computer science ; Bd. 12155 N2 - With the rising complexity and processing power of modern computer systems, the amount of MCU on a single PCB also rises. These microcontrollers often need to communicate with each other to exchange payload and control information in a bidirectional manner. Today’s well-established communication protocols in MCUs either do not fit modern transmission speed requirements or do have an inappropriate master-slave attribute, which does not allow the communication partners to have equal bus access rights. Therefore, this paper introduces an extension of the Serial Peripheral Interface (SPI) to allow an equally distributed access right for the communication interface between two microcontrollers. It simultaneously does fit modern transmission speed requirements of a common network interface, so that the message transmission does not constitute a bottleneck in data processing. Besides the protocol design, we do also provide a first prototype implementation, which constitutes a proof of concept. Y1 - 2020 U6 - https://doi.org/10.1007/978-3-030-52794-5_15 SP - 200 EP - 212 ER - TY - CHAP A1 - Jahn, Sabrina A1 - Mottok, Jürgen T1 - Work in Progress: Towards an Academic Secure Software Engineering Curriculum for Engineers T2 - 2020 IEEE Global Engineering Education Conference (EDUCON): 27-30 April 2020, Porto, Portugal N2 - In the age of the Internet of Things, it is becoming increasingly important to integrate knowledge about the development of secure systems (Secure Software Engineering) into academic teaching. However, teaching IT Security and Secure Software Engineering to non-computer scientists is rare. Therefore, we focus our research on the integration of IT Security into software engineering education of non-computer scientists, particularly electrical engineers, by means of inductive teaching- and learning-arrangements. After collecting students' preconceptions of IT Security and Secure Software Engineering in prior work, this paper now contributes with a first mapping of these preconceptions with corresponding learning content as well as suitable inductive teaching methods to be able to create new lecture and exercise units and improve academic learning and teaching in both areas. Y1 - 2020 U6 - https://doi.org/10.1109/EDUCON45650.2020.9125210 SP - 1713 EP - 1717 ER - TY - CHAP A1 - Weiss, Nils A1 - Renner, Sebastian A1 - Mottok, Jürgen A1 - Matoušek, Václav T1 - Transport Layer Scanning for Attack Surface Detection in Vehicular Networks T2 - CSCS '20: Computer Science in Cars Symposium N2 - In the beginning of every security analysis or penetration test of a system, information about the target has to be gathered. On IT-Systems a port scan is usually performed as a first step of an investigation. Since the communication protocols differ in automotive systems, generic port scanning tools can’t be used for a security analysis of CANs. More complex protocols have a higher likelihood of implementation errors and bugs. On CAN networks, such payloads are transferred through International Standard Transport Protocol (ISO-TP) communication. We designed a new methodology to identify ISO-TP endpoints in automotive networks. Every of these endpoints can provide exploitable application layer protocols and therefor has to be considered during penetration testing and security analysis. We contribute a new scan approach for the automated evaluation of possible attack surfaces in automotive CAN networks which has a higher coverage and multiple advantages than state of the art approaches. KW - automotive networks KW - network scan KW - attack surface detection KW - automation Y1 - 2020 U6 - https://doi.org/10.1145/3385958.3430476 IS - 7 SP - 1 EP - 8 CY - Feldkirchen ER -