Enigma-Fusion: Connecting Digital Twin and 3D-Printed Reconstruction

Abstract

This paper presents the design and realization of a fully functional, 3D-printed replica of the Enigma cipher machine, coupled with an interactive digital twin via a hardware–software interface. Beyond the acquisition of practical and transferable skills, the project enabled student participants to develop a thorough understanding of the machine’s mechanical operation, encryption principles, and historical relevance. The combined physical and digital system supports an illustrative and transparent demonstration of the Enigma’s internal processes, making its cryptographic functionality accessible and comprehensible to a broad audience.