Abstract
Industry 4.0 considers integration of IT and control systems with physical objects, software, sensors and connectivity in order to optimize manufacturing processes. It provides advanced functionalities in control and communication for an infrastructure that handles multiple tasks in various locations automatically. Automatic actions require information from trustworthy sources. Thus, this work is focused on how to ensure trustworthy communication from the edge devices to the backend infrastructure. We derive a meta-model based on RAMI 4.0, which is used to describe an end-to-end communication use case for an Industry 4.0 application scenario and to identify dependabilities in case of security challenges. Furthermore, we evaluate secure messaging protocols and the integration of Trusted Platform Module (TPM) as a root of trust for dataexchange. We define a set of representative measurable indicator points based on existing standards and use them for automated dependability detection within the whole system.
Highlights
Nowadays, the world is facing a new technological revolution known as Industry 4.0, which will affect economies and societies worldwide [1]
We evaluate the communication of the system from the edge devices to the backend infrastructure
In this paper we have derived a Cyber Physical Production Systems (CPPS) meta-model, which is used as a tool to identify the dependencies among different CPPS components
Summary
The world is facing a new technological revolution known as Industry 4.0, which will affect economies and societies worldwide [1]. RAMI 4.0 [4] provides a reference architecture where the elements of assets are described based on a three axes layer model Based on this reference model, we derive a meta-model to have a clear view on the complexity of these systems and to show the inter-domain security related dependabilities and affected components. Consequences can be in different areas or dimensions, such as interruption of an operation, modification of an operational process or sabotage with intention to cause harm Manipulating or interrupting such systems could affect safety in the CPPS, which can have consequences such as environmental damage, injury or loss of life. TPM as a root of trust for secure data exchange defining a representative set of MIPs using the CPPS meta-model for describing the proposed end-to-end communication use case and for showing the dependabilities between CPPS components. The remainder of the paper follows the same structure as the contributions above
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