[Ovmsdev] BCM seed key algorithm Maxus Euniq6

Jaime Middleton jmiddleton at tucar.app
Wed Oct 12 04:20:03 HKT 2022

Hi all,
I am currently working on the implementation for the Maxus Euniq6. I have
been able to decipher most of the metrics I wanted, but now I need to open
and close doors.
I was able to get access to a scanner for the car and sniff the can while
the scanner opened and closed the doors.
I mostly deciphered the interaction between the car and the scanner but
there seems to be a seed-key algorithm in order to authenticate the scanner
with the car. (I have ruled out a simple xor of bitshift).
Any ideas on how to decipher this?
I have a list of seed-keys and the chatter before in case someone wants to
take a look.
Any help is greatly appreciated.


Jaime Middleton

Software Engineer

Tucar Spa

[image: Tucar cell phone] +56 9 42526635

[image: Tucar cell phone] jmiddleton at tucar.app <jmiddleton at tucar.app>

[image: Tucar net] www.tucar.app <https://www.tucar.app>

[image: Tucar location] Plaza Yolanda 80, Las Condes, Santiago de Chile
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