Method for Data Security in Vehicle Components and Corresponding Vehicle Component

• US 20070284942A1
• Filed: 03/22/2005
• Published: 12/13/2007
• Est. Priority Date: 04/02/2004
• Status: Abandoned Application

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Inventors: Cornelius, Frank, Mueller, Andreas
• Application Number:
  US11/547,087
• Publication Number:
  US 20070284942A1
• Time in Patent Office: Days
• US Class Current: 307/10.200
• CPC Class Codes: B60R 25/00 Fittings or systems for preventing or indicating unauthorised use or theft of vehicles locks for vehicles E05B77/00-E05B85/00

Abstract

An apparatus and method for data security for a vehicle component in which security data is stored in the vehicle component are provided. Security data which is present in the vehicle component is stored in the vehicle component after having been encrypted by an encryption method and, when necessary, is decrypted by a decryption method and stored again after use having been encrypted again by the encryption method.

Claims

1-11. -11. (canceled)

12. A method for data security for a vehicle component, in which security data, for decrypting vehicle data transmitted in encrypted form, is stored in the vehicle component, the method comprising:

encrypting the security data; and

storing the encrypted security data in the vehicle component;

for decrypting vehicle data that is in encrypted form, decrypting the security data; and

after use of decrypted security data to decrypt the vehicle data, encrypting and storing the security data once again.

13. The method as claimed in claim 12, wherein the security data comprises a secret code word or a vehicle component status.

14. The method as claimed in claim 12, wherein the security data is stored in the vehicle component when the vehicle component is manufactured.

15. The method as claimed in claim 12, wherein the security data comprises a plurality of parts which are stored at different locations in the vehicle component.

16. The method as claimed in claim 15, wherein at least a first part of the security data is made identical for a group of vehicle components.

17. The method as claimed in claim 15, wherein at least a second part of the security data is made unique for each vehicle component within the group of vehicle components.

18. The method as claimed in claim 15, wherein the first or the second or the third part of the security data is stored as software data in a first memory unit in a flash block of the vehicle component.

19. The method according to claim 15, wherein the first or the second or the third part of the security data is stored as a ROM mask in a second memory unit in the vehicle component.

20. The method as claimed in claim 15, wherein the first or the second or the third part of the security data is stored in a third, non-volatile memory unit in the vehicle component which comprises an EEPROM.

21. The method as claimed in claim 13, wherein the security data is stored in the vehicle component when the vehicle component is manufactured.

22. The method as claimed in claim 13, wherein the security data comprises a plurality of parts which are stored at different locations in the vehicle component.

23. The method as claimed in claim 14, wherein the security data comprises a plurality of parts which are stored at different locations in the vehicle component.

24. The method as claimed in claim 22, wherein at least a first part of the security data is made identical for a group of vehicle components.

25. The method as claimed in claim 23, wherein at least a first part of the security data is made identical for a group of vehicle components.

26. The method as claimed in claim 16, wherein at least a second part of the security data is made unique for each vehicle component within the group of vehicle components.

27. The method as claimed in claim 16, wherein the first or the second or the third part of the security data is stored as software data in a first memory unit in a flash block of the vehicle component.

28. The method according to claim 16, wherein the first or the second or the third part of the security data is stored as a ROM mask in a second memory unit in the vehicle component.

29. The method as claimed in claim 16, wherein the first or the second or the third part of the security data is stored in a third, non-volatile memory unit in the vehicle component which comprises an EEPROM.

30. A vehicle component comprising:

a memory circuit configured to store security data with which vehicle data which has been transmitted in encrypted form can be decrypted;

an encoder which stores the security data which is present in the vehicle component in encrypted form in the memory circuit; and

a decoder configured to decrypt the stored security data.

31. The vehicle component as claimed in claim 30, wherein the memory circuit comprises a plurality of memory units and the security data is divided into a plurality of parts which are stored in the plurality of memory units of the memory circuit.