Abstract
Integration of Additive Manufacturing (AM) into connected systems increases the chances of potential cyber-physical attacks. One way to detect potential cyber-physical attacks is using side channels such as current, sound, or vibration. This approach involves comparing a process-driven signal to a known reference signal. Obtaining a reference signal for each different print can be time-consuming. This work aims to simulate the current delivered to each printer motor using G-code in a Fused Deposition Modeling (FDM) process. First, the relationship between motors and the current signal is studied. Second, the code segments responsible for the signal are identified, and the relevant information acquired is recorded. Finally, the information obtained in the previous stages are combined to generate the simulated signal. Case studies conducted to simulate the current signal demonstrate that the proposed method outputs a signal that closely resembles a real-life signature. The simulated signal conveys similar information about the printed object using the FDM process.
