renault cars immobilizer algorithm

Job ID: 34092385

Budget: $250 – $750 USD

i looking for crypro sequention for renault cars.
car ecu has ISK code , body (UCH)/immo has ISK code / PIN.
communication via CAN BUS (500/250).
sequention: immo sended question to ecu , ecu sended random code (calculate from ISK) to immo , immo calculated random code from ecu+ISK and send back random code to ecu for authorisation.
i looking crypto sequention / alghoritm / funcion ( from immo/UCH/body to ecu) .
if i find correct person i can send more info about this topic.
i can speak : polish / english / ukrainian / russian