Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication
Patent
1996-07-03
1998-07-28
Nguyen, Tan Q.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
701 29, 701 32, 701 35, 380 23, 380 28, 380 49, H04L 932, G06F 1214
Patent
active
057873674
ABSTRACT:
A system and method for providing secured programming for reprogramming on-board vehicle computer systems. The system includes an interface tool which communicates with a selected on-board computer system. The communication tool also communicates with an authorized database via a modem. The vehicle computer has a serial identification number and designated passwords stored in memory and external access to the designated passwords is denied. Upon request, the vehicle computer transmits the serial identification number to the database which looks up a designated password A that corresponds to the vehicle computer and transmits password A to the computer. If the password A received by the computer matches the password in memory, the authorized database provides encrypted data in accordance with an encryption function, password B and data values. The computer deciphers the encrypted data in accordance with a stored password B to generate data values. Reprogramming of the control software is allowed only when the encrypted data value match the data values stored in the vehicle computer.
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Calcaterra Mark P.
Chrysler Corporation
Nguyen Tan Q.
LandOfFree
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