We should be able to just key off of the Manufacturer ID from the head-unit's MAC address, and then auto-select the appropriate security method based on that. The same type of identification could then be used for any other system-specific tweaks that might arise.
So you mean like, not necessarily figure all of the manufacturer's best schemes ourselves, but rather, default to the original scheme but add special cases to a table which changes the security scheme for each new special case we discover?
Yes. The
{0} strings that we already capture and use, are the Bluetooth MAC addresses. The first three digit pairs should identify the manufacturer of the head unit.
So for the Harman head-unit in my Subaru, we would check for
A0:56:B2, which is the vendor ID for
Harman/Becker Automotive Systems GmbH.
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