4 ms·
How do you know when to reset the counter? You dont want invalid attempts incrementing forever...there is your chink in the armor.
by Jamwinner 7y ago
How do you know when to reset the counter? You dont want invalid attempts incrementing forever...there is your chink in the armor.
- Hackbraten 7y agoWhat’s wrong with resetting the counter when unlocked successfully?
- manicdee 7y agoWhat about unintentional passcode attempts such as a phone in a pocket getting butt-dialled?
- Dylan16807 7y agoThe interface should be designed so that you can't butt-dial more than a couple attempts. But if that does happen then the system of timeouts will prevent you from using up all the attempts. None of that gets in the way of resetting the counter only when the user succeeds.
- MiroF 7y agoThe difficulty (in my view) comes from ensuring that I can't just clone/replicate the state of the device from when I had more tries left and then try again.
- brokenmachine 7y agoAs I understand it, you can't clone the secure enclave chip because it doesn't expose the key or its code externally. The only way would be to physically decap the chip which would most probably destroy it.