YubikeyNeo Whitelist

[ghost]

Firstly wanted to thank you for neat app. I whitelisted my Yubikey Neo and i have an issue only if: If YubikeyNEO inserted before running usbkill and then remove it macos Sierra shuts down, but when i run usbkill and then plug it in and then unplug it it works fine. Any Suggestions? Thank you

[mfru]

As for what I can deduce from the comment for the loop function in usbkill.py this is expected behaviour:

# Main loop that checks every 'sleep_time' seconds if computer should be killed.
# Allows only whitelisted usb devices to connect!
# Does not allow usb device that was present during program start to disconnect!

When you had the Yubikey plugged in it counts as part of the uncompromised system which results in a kill if compromised (aka removed part of the uncompromised system).

As for whitelisted devices, these are allowed to connect and deconnect at your will after usbkill was started, because the uncompromised system does not change if a whitelisted device is plugged in or removed.