METHOD FOR MODULAR SOFTWARE REMOVAL

• US 20100049373A1
• Filed: 08/25/2008
• Published: 02/25/2010
• Est. Priority Date: 08/25/2008
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: CATSBURG, THOMAS M. P., Alrabady, Ansaf I.
• Application Number:
  US12/197,550
• Publication Number:
  US 20100049373A1
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: G06F 21/14 against software analysis or reverse engineering, e.g. by obfuscation
• CPC Class Codes: G06F 2221/2143 Clearing memory, e.g. to prevent the data from being stolen
• CPC Class Codes: G06F 8/62 Uninstallation

Abstract

A method of managing a code module that generates output information for a computer system is provided. The method comprises searching for the output information in the computer system, if the output information is not detected by the searching step, executing the code module, generating the output information in response to executing the code module, and removing the code module from the computer system in response to generating the output information.

Claims

1. A method of managing a code module that generates output information for a computer system, the method comprising:

searching for the output information in the computer system;

if the output information is not detected by the searching step, executing the code module;

generating the output information in response to executing the code module; and

removing the code module from the computer system in response to generating the output information.

2. The method of claim 1, wherein the output information comprises cryptographic key information and the code module creates cryptographic information.

3. The method of claim 2, wherein the cryptographic information comprises key pair information.

4. The method of claim 1, wherein the computer system is disposed in a vehicle.

5. The method of claim 4, wherein the output information comprises calibration information used to operate the vehicle.

6. The method of claim 4, wherein the output information comprises authenticity information used to identify a component of the vehicle.

7. The method of claim 4, wherein the output information comprises odometer information for the vehicle.

8. The method of claim 1, wherein removing the code module comprises deleting a file corresponding to the code module.

9. The method of claim 1, wherein removing the code module comprises reflashing a memory address corresponding to the memory location of the code module.

10. A method of managing a code module that is adapted to generate output information for a vehicle-based computer system, the method comprising:

searching for the code module in the computer system;

executing the code module if the searching step detects the code module;

generating output information in response to executing the code module; and

thereafter removing the code module from the computer system.

11. The method of claim 10, further comprising examining the output information for completeness prior to removing the code module.

12. The method of claim 11, further comprising re-executing the code module if the examining step detects incomplete output information.

13. The method of claim 12, further comprising re-examining the output information for completeness after re-executing the code module.

14. The method of claim 10, further comprising searching for the output information after executing the code module.

15. The method of claim 10, wherein removing the code module from the computer system comprises detecting a location of the code module in a file system.

16. The method of claim 15, wherein removing the code module from the computer system further comprises overwriting the file system in the location of the code module.

17. The method of claim 16, wherein overwriting the file system in the location of the code module comprises overwriting the location with a bit pattern more than once, thereby inhibiting recovery of the code module.

18. A method of operating an onboard computer system for a vehicle, the method comprising:

executing a code module of the computer system to produce output information specific to the vehicle;

confirming the existence of the output information in the computer system; and

removing the code module from the computer system after confirming the existence of the output information.

19. The method of claim 18, further comprising examining the output information for completeness prior to removing the code module.

20. The method of claim 19, wherein

examining the output information results in determination of incomplete output information;

and

the method further comprises re-executing the code module in response to the determination of incomplete output information.