3 ms·
That seems like a very weak failsafe likely to be easily cracked and those bad actors only slowed down a bit - if history is any guide. Why not implement somet
by phil21 8y ago
That seems like a very weak failsafe likely to be easily cracked and those bad actors only slowed down a bit - if history is any guide.
Why not implement something like detecting voltage drop between charger and device? Short circuit detection, etc. You can do a lot if you can have both sides communicate with each other, and at that point it matters a whole lot less if your cable lies to you plus you catch a lot of other failure conditions.
- wpowiertowski 8y agoThere are more use cases where being able to prove cryptographically the identity of the device is very useful from security point of view, PD is simply one of them.
- metaphor 8y agoApparently, BC 1.2 spec verbiage suggests this is already a hard requirement: The OTG device is required to limit the current it draws from the ACA such that VBUS_OTG remains above Vaca_opr min.