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Auflistung nach Autor:in "Watson, Venesa"

1 - 4 von 4
  • Textdokument
    Interoperability and Security Challenges of Industry 4.0
    (INFORMATIK 2017, 2017) Watson, Venesa; Tellabi, Asmaa; Sassmannahausen, Jochen; Lou, Xinxin
    Industrie 4.0 (I4.0) is the fourth industrial revolution, which will see the digital transformation of manufacturing, through the integration on Industrial Internet of Things (IIoT), Data and Services, and the convergence of Information Technology (IT) and Operational Technology (OT). With any such transformation, there exists challenges that must first be addressed for a successful outcome. For I4.0, these are interoperability and security, which respectively arise from the interconnection of devices from different manufacturers and/or with different communication protocols; and the interconnection of networks with competing critical and non-critical traffic, and the increased access to initially isolated networks. This paper presents an overview of standards, such as IEC 62443, the ISO 27000 series, IEC 62541 Open Connectivity Unified Architecture (OPC UA) and Time Sensitive Networks (TSN) (IEEE 1722-2016), which addresses these challenges.
  • Konferenzbeitrag
    Interoperability of fast charging station with battery booster
    (INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge), 2019) Schindler, Josef; Watson, Venesa; Waedt, Karl
    Before a high proportion of Electric Vehicles (EV) will be deployed, sufficient charging infrastructure for these EVs must be provided. In Germany, this deployment is hindered by the lack of a universal standard for the geometry of the charging plugs, the different charging voltage levels, the structure of data that is provided by the charging station and so forth. Related standards such as ISO/IEC 15118 and ISO/IEC 61850, respectively addresses front-end communication between EVs and common charging stations and defines communication messages for grid automation. Whilst ISO/IEC 15118 does address interoperability between charging infrastructures from different manufacturers, its restriction to front-end communication limits the extent of advanced interoperability. In this paper, we investigate the interoperability on battery boosted charging stations based on OPC Unified Architecture (OPC UA). OPC UA, powered by the OPC Foundation, is the primary interoperability standard for Industry 4.0 (I4.0). OPC UA enables data exchange regardless of the manufacturer of individual components. OPC UA can be implemented in embedded devices and controllers without considering additional “black boxes”, “windows boxes” or gateways in front of the equipment. This level of interoperability provides significant cost-saving for the utilities during all lifecycle phases. It also ensures transparent data acquisition for customers. In this paper, an example of fast charging station with battery booster is used to demonstrate the interoperability feature of OPC UA compared to that of ISO/IEC 15118. Also, their differing structure makes it necessary to consider these charging stations separately from common ones. Therefore, various data representation formats are utilized to show information sharing within two model user groups.
  • Textdokument
    MAC-layer Security for Time-Sensitive Switched Ethernet Networks
    (INFORMATIK 2020, 2021) Watson, Venesa; Ruland, Christoph; Waedt, Karl
    Security remains a key discussion point for industrial networks within critical infrastructure and Industry 4.0 (I4.0)/Smart Manufacturing infrastructures. While availability remains the chief security requirement for highest safety, integrity protection has become somewhat equal to availability in industry. Common integrity protection mechanisms, however, are not practical for the time-sensitive networks (TSNs) characteristic of I4.0 and critical infrastructures, where the time-critical and mission-critical transmissions cannot be negatively affected by the security overhead. To sufficiently protect and support TSNs, it is necessary to design an integrity protection scheme that provides lightweight security particularly at the OSI MAC-layer where the TSN protocols are defined. The development and testing of lightweight cryptographic algorithms provide one mean by which to achieve such an integrity protection, however, additional steps are needed to design and prove a suitable scheme. TSN-MIC is proposed as a viable scheme for MAC-layer security for TSNs in critical infrastructure and I4.0/Smart Manufacturing.
  • Konferenzbeitrag
    Secure Granular Interoperability with OPC UA
    (INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge), 2019) Watson, Venesa; Sassmannshausen, Jochen; Waedt, Karl
    Open Platform Communications Unified Architecture (OPC UA) is the communication standard earmarked for future industrial automation, particularly for the Industry 4.0 (I4.0) infrastructure where it provides the key services for interoperability and built-in communication security. OPC UA defines several models for these services and has already been deployed by industrial partners in their efforts to achieve I4.0 market readiness and to provide more robust systems. Of particular interest is the security services offered by OPC UA, as they are expected to strengthen the security posture of industrial automation systems, which have so far suffered a number of sophisticated cyber-attacks. In general, cyber-attacks are more severe based on the level of access acquired by the attacker, for example, an attacker with unrestricted administrative level access can issue more powerful commands. It is safe to say then that a more stringent access control security concept can offer systems greater protection from unauthorized access. Several access control models exist, which are categorized under two headings discretionary (data owners/users set the access control rules) and non-discretionary (security administrators control the access granted to users). Here, a non-discretionary access control model, namely the attributebased access control (ABAC) model is compared to the role-based access control (also nondiscretionary) typically assumed with OPC UA, to ascertain how a more granular security structure with ABAC could provide additional security advantages for industry.