Systems Secured by Packaging using a GMI Structure
Stéphan Borel, Thibaut Sohier, Jean-Philippe Michel, Rachid Hida, Edouard Deschaseaux, Jean-Charles Souriau, Assia Tria, Gilles Simon · 2021
The magneto-impedance of NiFe/Al/NiFe lines intended to form a protection against physical attacks was studied. Their behavior when exposed to the magnetic field generated by a DC current flowing through them, as well as their sensitivity to tiny modifications of their geometry are reported. Their integration inside the packaging of a system is presented as an opportunity to protect multiple vulnerable dies collectively to make a secure system.