COMMUNICATION SYSTEM HAVING PLURAL TERMINALS AND METHOD FOR CONTROLLING TERMINAL IN COMMUNICATION SYSTEM

• US 20110264914A1
• Filed: 04/21/2011
• Published: 10/27/2011
• Est. Priority Date: 04/21/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Sung Jin, BAE, Eun Hui, Chang, Yong, Lim, Hyoung Kyu
• Granted Patent: US 8,621,219 B2
• Time in Patent Office: Days
• US Class Current: 713/170
• 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 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 9/321 involving a third party or a trusted authority
• CPC Class Codes: H04L 9/3228 One-time or temporary data, i.e. information which is sent for every authentication or authorization, e.g. one-time-password, one-time-token or one-time-key
• CPC Class Codes: H04L 9/3271 using challenge-response

Abstract

A method and communication system for assigning the control authorization for controlling functions of a device from a terminal to another terminal in a communication system is provided. Through the method, it is possible to simplify the authentication process of a terminal having the communication function based on the short messaging service, and to reduce the security information size generated in the authentication process.

Claims

1. A terminal control method of a terminal management server in a communication system, comprising:

receiving, from a first terminal, an authorization assignment request message for assigning control authorization on a third terminal which executes a function in response to an external command;

checking a second terminal to which the control authorization is assigned;

generating a one-time secret key as a result of the checking;

determining, after transmitting the one-time secret key, whether a remote control request message for controlling the third terminal is received from the second terminal; and

sending, when the remote control request message is received with the one-time secret key valid, the remote control request message to the third terminal.

2. The terminal control method of claim 1, wherein sending the remote control request message comprises:

determining whether the one-time secret key is valid;

transmitting, when the one-time secret key is invalid, a remote control confirm request message to the first terminal for confirming whether the first terminal attempts to assign the authorization for controlling the third terminal;

regenerating, when a response message is received in response to the remote control confirm request message, the one-time secret key; and

transmitting the regenerated one-time secret key to the second terminal.

3. The terminal control method of claim 1, wherein the authorization assignment request message comprises at least one of identity information of the second terminal, identity information of the third terminal, and authorization assignment time information for defining a time when the authorization assignment is to be withdrawn.

4. The terminal control method of claim 1, further comprising sending the first terminal a remote control status message reporting a function executed by the third terminal according to the remote control request message.

5. A terminal control communication system comprising:

a first terminal for assigning control authorization for controlling a function execution terminal executing a function in response to an external command;

a terminal management server for generating, when an authorization assignment request message is received from the first terminal, a one-time secret key to another terminal; and

a second terminal to which the control authorization is assigned and for controlling the function execution terminal based on the assigned control authorization.

6. The terminal control communication system of claim 5, wherein the terminal management server sends, when the remote control request message is received with the one-time secret key valid, the third terminal the remote control request message.

7. The terminal control communication system of claim 6, wherein the terminal management server determines whether the one-time secret key is valid, transmits, when the one-time secret key is invalid, a remote control confirm request message to the first terminal for confirming whether the first terminal attempts to assign the authorization for controlling the third terminal, regenerates, when a response message is received in response to the remote control confirm request message, the one-time secret key, and transmits the regenerated one-time secret key to the second terminal.

8. The terminal control communication system of claim 5, wherein the message comprises at least one of identity information of the second terminal, identity information of the third terminal, and authorization assignment time information for defining a time when the authorization assignment is to be withdrawn.

9. The terminal control communication system of claim 5, wherein the terminal management server sends the first terminal a remote control status message reporting a function executed by the third terminal according to the remote control request message.