reprogramming is a non issue, most ucontrollers have protection
features for that, sure you can still forcefully reprogram (some
of)these devices but that means losing all program data on it along
with encryption keys stored there that are needed to load and decrypt
the wallet from eeprom...
price on the other hand, dont really know about that
im just worried that if you use your smartcard with payment terminal
at vendors site, then how do you know the terminal that has they
keypad and display has not been tampered with?
are you going to drag along your own terminal + smart card?
might as well have it in one device already then, why use smartcard at
all if you already need to have a physical device with you?
On Jun 27, 6:00 am, Ludwig Maes <
ludwig.m...@gmail.com> wrote:
> Which is exactly what would be achieved by having the display and
> buttons on your trusted smart card...
>
> You are proposing another embedded device? No problem, as long as you
> can show me that reprogramming that device needs permission from the
> device side... and can provide convincing arguments that it doesnt
> become more expensive than smartcards...
>