Wireless Charging System Using Secure Wireless Charging Protocols

• US 20140325218A1
• Filed: 04/26/2013
• Published: 10/30/2014
• Est. Priority Date: 04/26/2013
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Shimizu, Takayuki, Yokoyama, Akihisa, Kawakubo, Atsushi
• Application Number:
  US13/871,656
• Publication Number:
  US 20140325218A1
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04L 12/1403 Architecture for metering, charging or billing
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/0827 involving distinctive intermediate devices or communication paths network architectures or network communication protocols using different networks H04L63/18
• CPC Class Codes: H04L 9/3271 using challenge-response
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 4/24 Accounting or billing

Abstract

The disclosure includes a system and method for charging a target object wirelessly. The system includes a processor and a memory storing instructions that when executed cause the system to: receive data describing a charging request from a target object; generate a challenge responsive to the charging request; send the challenge to the target object; receive a response from the target object; verify the response to determine that the response matches the challenge and a first set of secret data shared with a tagging device; determine that a location associated with the target object satisfies a safe charging range responsive to the verification of the response; and instruct a power transmitter associated with the target object to transmit power wirelessly to a power receiver associated with the target object responsive to the verification of the response and the determination that the location satisfies the safe charging range.

Claims

1. A computer-implemented method comprising:

receiving data describing a charging request from a target object;

generating a challenge responsive to the charging request;

sending the challenge to the target object;

receiving a response from the target object;

verifying the response to determine that the response matches the challenge and a first set of secret data shared with a tagging device;

determining that a location associated with the target object satisfies a safe charging range responsive to the verification of the response; and

instructing a power transmitter associated with the target object to transmit power wirelessly to a power receiver associated with the target object responsive to the verification of the response and the determination that the location satisfies the safe charging range.

2. The method of claim 1, wherein the response includes a transformation of the challenge and the first set of secret data using a response function.

3. The method of claim 1, further comprising:

sharing a session key with the target object; and

wherein the response received from the target object is encrypted using the session key.

4. The method of claim 1, wherein the challenge is a random number uniquely associated with the charging request.

5. The method of claim 1, further comprising:

receiving object authentication data from the target object; and

authenticating the target object based on the object authentication data and a second set of secret data shared with the target object.

6. The method of claim 5, wherein authenticating the target object comprises:

performing, based on the second set of secret data, a challenge-response authentication process to authenticate the target object.

7. The method of claim 1, further comprising:

generating an authentication code associated with the challenge; and

sending the authentication code to the tagging device via the target object.

8. A computer program product comprising a computer usable medium including a computer readable program, wherein the computer readable program when executed on a computer causes the computer to:

receive data describing a charging request from a target object;

generate a challenge responsive to the charging request;

send the challenge to the target object;

receive a response from the target object;

verify the response to determine that the response matches the challenge and a first set of secret data shared with a tagging device;

determine that a location associated with the target object satisfies a safe charging range responsive to the verification of the response; and

instruct a power transmitter associated with the target object to transmit power wirelessly to a power receiver associated with the target object responsive to the verification of the response and the determination that the location satisfies the safe charging range.

9. The computer program product of claim 8, wherein the response includes a transformation of the challenge and the first set of secret data using a response function.

10. The computer program product of claim 8, wherein the computer readable program when executed by the computer causes the computer to also:

share a session key with the target object; and

wherein the response received from the target object is encrypted using the session key.

11. The computer program product of claim 8, wherein the challenge is a random number uniquely associated with the charging request.

12. The computer program product of claim 8, wherein the computer readable program when executed by the computer causes the computer to also:

receive object authentication data from the target object; and

authenticate the target object based on the object authentication data and a second set of secret data shared with the target object.

13. The computer program product of claim 12, wherein authenticating the target object comprises:

performing, based on the second set of secret data, a challenge-response authentication process to authenticate the target object.

14. The computer program product of claim 8, wherein the computer readable program when executed by the computer causes the computer to also:

generate an authentication code associated with the challenge; and

send the authentication code to the tagging device via the target object.

15. A system comprising:

a processor; and

a memory storing instructions that, when executed, cause the system to;

receive data describing a charging request from a target object;

generate a challenge responsive to the charging request;

send the challenge to the target object;

receive a response from the target object;

verify the response to determine that the response matches the challenge and a first set of secret data shared with a tagging device;

determine that a location associated with the target object satisfies a safe charging range responsive to the verification of the response; and

instruct a power transmitter associated with the target object to transmit power wirelessly to a power receiver associated with the target object responsive to the verification of the response and the determination that the location satisfies the safe charging range.

16. The system of claim 15, wherein the response includes a transformation of the challenge and the first set of secret data using a response function.

17. The system of claim 15, wherein the instructions when executed cause the system to also:

share a session key with the target object; and

wherein the response received from the target object is encrypted using the session key.

18. The system of claim 15, wherein the challenge is a random number uniquely associated with the charging request.

19. The system of claim 15, wherein the instructions when executed cause the system to also:

receive object authentication data from the target object; and

authenticate the target object based on the object authentication data and a second set of secret data shared with the target object.

20. The system of claim 19, wherein the instructions when executed cause the system to authenticate the target object by:

performing, based on the second set of secret data, a challenge-response authentication process to authenticate the target object.