METHOD FOR PAIRING A MOBILE TELEPHONE WITH A MOTOR VEHICLE AND LOCKING/UNLOCKING SET

• US 20130259232A1
• Filed: 09/28/2011
• Published: 10/03/2013
• Est. Priority Date: 09/28/2010
• Status: Active Grant

• Current Assignee: Valeo Securite Habitacle (Valeo SE)
• Original Assignee: Valeo Securite Habitacle (Valeo SE)
• Inventors: Petel, Laurent
• Granted Patent: US 10,187,793 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: G07C 2009/00865 remotely by wireless communication
• CPC Class Codes: G07C 2009/00888 programming by learning
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00857 where the code of the data carrier can be programmed
• CPC Class Codes: H04L 63/0492 by using a location-limited connection, e.g. near-field communication or limited proximity of entities
• CPC Class Codes: H04L 63/18 using different networks or channels, e.g. using out of band channels cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/50 Secure pairing of devices

Abstract

The invention relates to a method for pairing a mobile telephone with a motor vehicle, said paired mobile telephone being used to lock/unlock and/or start said motor vehicle by means of at least part of an authentication code. Said method is characterised in that the mobile telephone (5) is loaded with said at least part of the authentication code required to be able to lock/unlock and/or start said motor vehicle.

Claims

1. A method, comprising:

pairing a mobile telephone with a motor vehicle, said paired mobile telephone being used to lock/unlock and/or start said motor vehicle using at least part of an authentication code, wherein the mobile telephone is loaded with said at least part of the authentication code required to lock/unlock and/or start said motor vehicle.

2. The pairing method as claimed in claim 1, wherein at least part of the authentication code is loaded by communication with a medium storing said at least part of the authentication code.

3. The pairing method as claimed in claim 2, wherein the medium is the vehicle.

4. The pairing method as claimed in claim 2, wherein the medium is a locking/unlocking and/or starting key.

5. The pairing method as claimed in claim 2, wherein the medium is a remote server.

6. The pairing method as claimed in claim 1, wherein at least part of the authentication code is loaded from one of the media in the set comprising a vehicle, a remote server and an existing locking/unlocking and/or starting key, and another part of said code is loaded from a different medium in the set comprising a vehicle, a remote server and an existing locking/unlocking and/or starting key.

7. The pairing method as claimed in claim 1, wherein the mobile telephone receives at least part of the authentication code by near field communication.

8. The pairing method as claimed in claim 1, wherein the mobile telephone receives at least part of the authentication code by mobile telephony communication.

9. The pairing method as claimed in claim 1, further comprising:

receiving, by the mobile telephone, a decryption key to decrypt said at least one part of the encrypted authentication code;

bringing the mobile telephone close to said medium to receive said at least part of the encrypted authentication code by communication; and

decrypting, by the mobile telephone the encrypted authentication code using the decryption key and records said at least one part of the encrypted authentication code that has been decrypted.

10. The pairing method as claimed in claim 9, wherein the decryption key is entered into the mobile telephone.

11. The pairing method as claimed in claim 9, wherein the mobile telephone recovers the decryption key from the GSM network.

12. The pairing method as claimed in claim 1, wherein said at least one part of the encrypted authentication code is encrypted using symmetrical cryptography.

13. The pairing method as claimed in claim 1, wherein said at least one part of the encrypted authentication code is encrypted using asymmetrical public-/private-key cryptography.

14. The pairing method as claimed in claim 1, wherein said at least one part of the encrypted authentication code is encrypted using the Diffie-Hellman protocol.

15. The pairing method as claimed in claim 1, wherein the ability of the mobile phone to lock/unlock and/or start the motor vehicle is revoked when the motor vehicle again authenticates the locking/unlocking and/or starting key.

16. The pairing method as claimed in claim 1, wherein the ability of the mobile phone to lock/unlock and/or start the motor vehicle is revoked by switching a switch on the locking/unlocking and/or starting key.

17. The pairing method as claimed in claim 1, wherein the ability of the mobile telephone to lock/unlock and/or start the motor vehicle is revoked by selecting an option from a menu of the computer on board the motor vehicle.

18. The pairing method as claimed in claim 1, wherein the vehicle has a memory storing a primary code and a derivation algorithm able to produce a code derived from said primary code, and in that the vehicle is able to identify a mobile telephone as including a derived code different from a currently active derived code, and to revoke the derived code currently active when a telephone is identified.

19. The pairing method as claimed in claim 18, wherein the mobile telephone is configured to send to the vehicle a datum indicating an order of appearance of the successive authentication codes, and in that the vehicle is configured not to authorize activation of an authentication code unless the order datum indicates an increment of said successive appearance order in relation to the order datum sent during authentication with the preceding authentication code.

20. A motor vehicle locking/unlocking set comprising:

a motor vehicle locking/unlocking key comprising;

a first communication interface configured to communicate using an NFC protocol,

a first memory containing an encrypted authentication code; and

a mobile telephone comprising;

a second communication interface configured to communicate using an NFC protocol,

a second memory, and

a control unit configured to;

receive a decryption key,

receive the encrypted authentication code from the locking/unlocking key by means of the first and second communication interfaces,

decrypt the authentication code using the decryption key and store the decrypted authentication code in the second memory, and

communicate with the motor vehicle by means of the second communication interface to unlock said motor vehicle using said authentication code.

21. A pairing application configured to be downloaded to a mobile telephone, wherein the pairing application configures a mobile telephone to receive an authentication code required to unlock the motor vehicle using near field communication with a key for locking/unlocking said motor vehicle and for locking/unlocking said motor vehicle using near field communication on the basis of said authentication code.