Ownership sharing method and apparatus using secret key in home network remote controller

• US 20070162762A1
• Filed: 01/04/2007
• Published: 07/12/2007
• Est. Priority Date: 01/09/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Bae-eun, Huh, Mi-suk, Im, Bum-jin
• Granted Patent: US 8,281,144 B2
• Time in Patent Office: Days
• US Class Current: 713/182
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 63/06 for supporting key management in a packet data network cryptographic mechanisms or cryptographic arrangements for key management H04L9/08
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 9/0844 with user authentication or key authentication, e.g. ElGamal, MTI, MQV-Menezes-Qu-Vanstone protocol or Diffie-Hellman protocols using implicitly-certified keys
• CPC Class Codes: H04L 9/3271 using challenge-response

Abstract

An ownership sharing method and apparatus using a secret key in a home network remote controller are provided. A user who owns a home device generates an ownership authentication key using the secret key shared with the home device through the user'"'"'s terminal device, and transmits the ownership authentication key to a terminal device of a particular user who wishes to share the ownership. The particular user can use the home device using the shared ownership authentication key, allowing for ownership of a device in home network environments based on a secret key that can be easily shared, obviating complicated calculation procedures that are no needed to share the ownership between an owner of a device and his family or customers, and achieving high security that is guaranteed based on the secret key.

Claims

1. An ownership sharing method of a home network remote controller comprising:

requesting sharing of the ownership to the main remote controller;

receiving an ownership authentication key generated using a secret key from the main remote controller; and

transmitting the ownership authentication key to the first device and receiving a service from the first device.

2. The method of claim 1, wherein the operation of requesting sharing of the ownership to the main remote controller comprises transmitting request data including an identification (ID) of the remote controller and a name of the first device to the main remote controller.

3. The method of claim 1, wherein in the operation of receiving an ownership authentication key generated using a secret key from the main remote controller, the main remote controller generates the ownership authentication key using the secret key, the ID of the remote controller and the name of the first device.

4. The method of claim 1, wherein the secret key is shared by the main remote controller and the first device.

5. The method of claim 1, wherein the operation of transmitting the ownership authentication key to the first device comprises receiving a random number from the first device to challenge a qualified user, and transmitting a first confirmation key, acquired by putting the ownership authentication key and the random number into a hash function, to the first device.

6. The method of claim 5, wherein the first device generates the ownership authentication key using the ID of the remote controller, the secret key shared with the main remote controller and other information, acquires a second confirmation key by putting the ownership authentication key and the random number into the hash function, and executes the service if the first confirmation key and the second confirmation key are the same.

11. The method of claim 3, wherein the secret key is shared by the main remote controller and the first device.

7. A home network remote controller to use a first device by receiving and sharing an ownership from a main remote controller having the ownership of a first device, comprising:

a memory for storing personal information on a user, information on each home device which the user is accessible to, and an ownership authentication key received from the main remote controller;

a location limited channel (LLC) interface for supporting wireless communications with the first device and the main remote controller;

an authentication requester for transmitting an authentication request, the information on itself and a confirmation key, acquired by putting a random number received from the first device and the ownership authentication key into a hash function, to the first device; and

a controller for controlling the operation of each component according to commands.

8. The home network remote controller of claim 7, wherein the information on home device comprises a device type, a vender, a model name, a serial number and a private IP address allocated in a home network.

9. A home network remote controller which has an ownership of a first device and provides an ownership authentication key to a sub remote controller requesting sharing of the ownership, comprising:

a memory for storing a secret key shared with the first device;

a location limited channel (LLC) interface for supporting wireless communications with the first device and the sub remote controller;

an authenticator for generating the ownership authentication key using the secret key and transmits the ownership authentication key to the sub remote controller; and

a controller for controlling the operation of each component according to commands.

10. The home network remote controller of claim 9, wherein the authenticator generates the ownership authentication key using the secret key, an ID of the sub remote controller and a name of the first device.

12. The home network remote controller of claim 9, further comprising a controller for controlling to generate the ownership authentication key using the secret key.