Method and system for vehicle authentication of a component class

• US 20040003252A1
• Filed: 06/28/2002
• Published: 01/01/2004
• Est. Priority Date: 06/28/2002
• Status: Active Grant

• Current Assignee: Continental Automotive Systems, Inc. (Continental AG)
• Original Assignee: Temic Automotive of North America, Incorporated (Continental AG)
• Inventors: Dabbish, Ezzat A., Puhl, Larry C.
• Granted Patent: US 7,127,611 B2
• Time in Patent Office: Days
• US Class Current: 713/175
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/25 using biometry
• CPC Class Codes: B60R 25/307 using data concerning maintenance or configuration
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04L 9/3263 involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823
• CPC Class Codes: H04L 9/3271 using challenge-response

Abstract

A vehicle authenticates a component class of a prospective component for use in the vehicle by obtaining from a certification authority a certification that an authentic component of the component class is associated with a second cryptographic key. The certification certifies that the second cryptographic key is bound to information identifying an authentic component of the component class. The vehicle utilizes the second cryptographic key obtained from the certification authority in cryptographic communication with the prospective component, and determines whether the prospective component is an authentic component of the component class based on whether the second cryptographic key is successfully utilized in the cryptographic communication.

Claims

1. A method for authentication of a component class of a component for use in a vehicle, the method performed by the vehicle and comprising the steps of:

obtaining from a certification authority a certification that an authentic component of a component class, the authentic component having a first cryptographic key being unique to the component class of the authentic component, is associated with a second cryptographic key;

utilizing the second cryptographic key in cryptographic communication with the prospective component; and

determining whether the prospective component is the authehtic component of the component class based on whether the second cryptographic key is successfully utilized in the cryptographic communication.

2. The method of claim 1 wherein the certification comprises a digital certificate.

3. The method of claim 1 wherein the certification comprises a digital signature of the certification authority.

4. The method of claim 1 wherein the certification authority is authenticated by a second certification authority.

5. The method of claim 1 wherein the certification authority is a component supplier of the authentic component.

6. The method of claim 1, further comprising the step of determining that the certification authority is authorized to certify the authentic component.

7. The method of claim 1 wherein the step of obtaining the certification comprises obtaining a certification that a component having an identified component supplier is associated with the second cryptographic key.

8. The method of claim 1 wherein the first cryptographic key is accessible only by the authentic component.

9. The method of claim 1 wherein the first cryptographic key is a private cryptographic key of the authentic component and the second cryptographic key is a public cryptographic key of the authentic component.

10. The method of claim 1, further comprising the step of allowing the prospective component to become operative within the vehicle upon determining the prospective component is an authentic component of the component class.

11. A system for authentication of a component class of a prospective component for use in a vehicle, the system comprising:

a vehicle system obtaining from a certification authority a certification that an authentic component of a component class, the authentic component having a first cryptographic key being unique to the component class of the prospective component, is associated with a second cryptographic key;

a cryptographic computing element utilizing the second cryptographic key in cryptographic communication with a prospective component; and

the vehicle system determining whether the prospective component is an authentic component of the component class based on whether the cryptographic key is successfully utilized in the cryptographic communication.

12. The system of claim 11 wherein the certification comprises a digital certificate.

13. The system of claim 11 wherein the certification comprises a digital signature of the certification authority.

14. The system of claim 11 wherein the certification authority is authenticated by a second certification authority.

15. The system of claim 11 wherein the certification authority is a component supplier of the authentic component.

16. The system of claim 11, wherein the vehicle system determines that the certification authority is authorized to certify the authentic component.

17. The system of claim 11, wherein the certification associates a component having an identified component supplier with the second cryptographic key.

18. The system of claim 11 wherein the private cryptographic key is accessible only by the authentic component.

19. The system of claim 11 wherein the first cryptographic key is a private cryptographic key of the authentic component and the second cryptographic key is a public cryptographic key of the authentic component.

20. The system of claim 11 wherein the vehicle system allows the prospective component to become operative within the vehicle upon determining the prospective component is the authentic component.