> Theoretically it should be possible for a cable to spoof the ID of what it's connected to though, right?
Yes, but the authentication doesn't appear to be simple ID spoofing. This is from the announcement of the standard they're using:
"The USB 3.0 Promoter Group today announced the USB Type-C Authentication specification, defining cryptographic-based authentication for USB Type-C chargers and devices. Using this protocol, host systems can confirm the authenticity of a USB device or USB charger, including such product aspects as the descriptors/capabilities and certification status. All of this happens right at the moment a wired connection is made – before inappropriate power or data can be transferred."
Yes, but the authentication doesn't appear to be simple ID spoofing. This is from the announcement of the standard they're using:
"The USB 3.0 Promoter Group today announced the USB Type-C Authentication specification, defining cryptographic-based authentication for USB Type-C chargers and devices. Using this protocol, host systems can confirm the authenticity of a USB device or USB charger, including such product aspects as the descriptors/capabilities and certification status. All of this happens right at the moment a wired connection is made – before inappropriate power or data can be transferred."
https://usb.org/sites/default/files/article_files/USB_Type-C...