Re:Software control USB power on some USB hubs
by teakie on Wednesday September 13, 2023 @06:14PM
(#37502427)
I want power only USB Cables. The USB-C protcoll was allready a security thread resulting in unlocking fde and successfull boot up
Re:Software control USB power on some USB hubs
by tehlike on Wednesday September 13, 2023 @07:52PM
(#37503158)
amazon has them, or you can get "usb condoms".
Re:Software control USB power on some USB hubs
by nikau on Wednesday September 13, 2023 @08:15PM
(#37503323)
Make sure to get the ones with active circuitry on them to negotiate charging speed, otherwise you will be stuck at 5v and under an amp.
I got some ti chip ones from aliexpress for around 4 bucks each that have worked flawlessly on laptops and phones.
Re:Software control USB power on some USB hubs
by teakie on Thursday September 14, 2023 @04:26AM
(#37506350)
yes that negotion is a specific protocoll of USB-C and was used to unlock fde encryption through the USB-C port connected secure enclave, that was happy to decrypt fed as if you had entered the password. the next generation had magsafe again :)
Re:Software control USB power on some USB hubs
by mjg59 on Thursday September 14, 2023 @01:04PM
(#37511637)
If you're talking about the T2 vulnerability - no, PD negotiation is not sufficient, you need arbitrary data communication.
Re:Software control USB power on some USB hubs
by teakie on Friday September 15, 2023 @04:49PM
(#37528944)
mind sharing a reference? didn't say it's a pd vuln btw
edit: ah, I see – did say exactly that.
Re:Software control USB power on some USB hubs
by teakie on Saturday September 16, 2023 @04:53AM
(#37533133)
sorry, but NO I didn't meant to say that. but part of the problem and part of the solution was usbc/nomore usbc.
Do you happen to have that github link with the poc link to youtube?
Re:Software control USB power on some USB hubs
by nikau on Thursday September 14, 2023 @07:30PM
(#37516197)
It's not just pd, it does all the wacky Samsung and other negotiation types too.
Re:Software control USB power on some USB hubs
by tmpX7dMeXU on Wednesday September 13, 2023 @08:10PM
(#37503286)
I’m more a fan of the unsafe ejection method.
>Original idea for this code was inspired by hub-ctrl.c by Niibe Yutaka: https://www.gniibe.org/development/ac-power-control-by-USB-h...