Description
Additive Manufacturing (AM), also known as 3D printing, is a modern Industry.4.0 technology. It is highly
customizable and allows an on-demand production of complex and high-quality parts while generating little
waste. However, cyber-physical attacks on AM threaten manufactured parts and their environment. This thesis
introduces threat categories and derives requirements to secure the AM process chain against those threats.
To fulfil the requirements multiple defensive measures are proposed. The concept utilizes an online 3D design
marketplace to distribute digital design files. It integrates a Public Key Infrastructure (PKI) into the process chain
and shows how AM related files can be protected. Furthermore, this thesis provides an implementation as a prove
of concept. It demonstrates how AM can be secured throughout its individual steps. The implementation ensures
the confidentiality and integrity of design files, by extending the popular softwares UltiMaker Cura and OctoPrint
with plugins that enable the import and export of signed and encrypted files.
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