So impossible really means impractical.
That HSM is still just a physical machine, and it can be, with difficulty, modified or copied.
To be impossible it would have to be mathematically impossible (or at least not within human time scales).
That HSM is still just a physical machine, and it can be, with difficulty, modified or copied.
To be impossible it would have to be mathematically impossible (or at least not within human time scales).
"Disassemble phone, desolder security module, dissolve the outer layers in hydrochloric acid, cut the silicon into 16nm slices, scan each layer with an electron microscope" impractical.