As I pointed before, lifting any "secret" key of any chip is quite trivial to a semiconductor professional.
It's part of a job of an IC engineer to be able to tap arbitrary metal layer on the device with microprobes to "debug" it, and this is something quite routine in a process of a microchip development.
Any such measures can only deter people without access to an IC development lab.
It's part of a job of an IC engineer to be able to tap arbitrary metal layer on the device with microprobes to "debug" it, and this is something quite routine in a process of a microchip development.
Any such measures can only deter people without access to an IC development lab.