Method and device for transmitting and receiving authentication information in wireless communication system

1. A method for transmitting, by a first device, authentication information to a second device in a wireless communication system, the method comprising:

obtaining, by the first device, from an authentication server, an authentication code based on an identifier (ID) of an application associated with a service and a password of the application;

establishing a Wi-Fi peer to peer (P2P) connection between the first device and the second device;

obtaining, by the first device, from the second device, second device information about the second device based of the Wi-Fi P2P connection;

transmitting, by the first device, to a device-information management server, a request for registering the second device in the device-information management server based on the second-device information;

in response to the second device being registered in the device-information management server, obtaining, by the first device, from the device-information management server, registration information including information on a service-providing server and a peer identifier (ID) to be used by the second device to access the service-providing server; and

transmitting by the first device, to the second device, the authentication code and the registration information including the information on the service-providing server and peer ID,

wherein the authentication code is transmitted from the second device to the authentication server such that access information for accessing the service-providing server is obtained by the second device, and

wherein the information on the service-providing server includes an internet protocol (IP) address for accessing the service-providing server, or port information for accessing the service-providing server.

2. The method of claim 1 , wherein obtaining the authentication code comprises:

transmitting, to the authentication server, an authentication request message including the ID of the application and the password of the application; and

receiving, from the authentication server, an authentication response message including the authentication code in response to the authentication request message.

3. The method of claim 1 , wherein the peer ID is transmitted from the device-information management server to the service-providing server.

4. A method for receiving authentication information from a first device in a second device of a wireless communication system, the method comprising:

establishing a Wi-Fi peer to peer (P2P) connection between the first device and the second device;

transmitting, by the second device, to the first device, second-device information about the second device based of the Wi-Fi P2P connection;

in response to registering in a device-information management server based on the second-device information, receiving, by the second device, from the first device, an authentication code and registration information of the second device, wherein the registration information includes information on a service-providing server and a peer identifier (ID) to be used by the second device to access the service-providing server; and the authentication code is obtained by the first device from an authentication server based on an ID of an application associated with a service and a password of the application;

obtaining, by the second device, from the authentication server, access information for accessing the service-providing server based on the authentication code; and

transmitting, by the second device, to the service-providing server, a service request message for requesting the service based on the access information and the registration information including the information on the service-providing server and the peer ID,

wherein the information on the service-providing server includes an internet protocol (IP) address for accessing the service-providing server, or port information for accessing the service-providing server.

5. The method of claim 4 , wherein obtaining the access information comprises:

transmitting, to the authentication server, an access information request message including the authentication code; and

receiving, from the authentication server, an access information response message including the access information in response to the access information request message.

6. The method of claim 4 , wherein the peer ID is transmitted from the device-information managemnt server to the service-providing server.

7. A first device for transmitting authentication information to a second device in a wireless communication system, the first device comprising:

communication circuitry; and

at least one processor configured to:

obtain, from an authentication server, an authentication code based on an identifier (ID) of an application associated with a service and a password of the application,

establish a Wi-Fi peer to peer (P2P) connection between the first device and the second device;

obtain, from the second device, second device information about the second device based of the Wi-Fi P2P connection;

control the communication circuitry to transmit, to a device-information management server, a request for registering the second device in the device-information management server based on the second-device information,

in response to the second device being registered in the device-information management server, obtain, from the device-information management server, registration information including information on a service-providing server and a peer identifier (ID) to be used by the second device to access the service-providing server, and

control the communication circuitry to transmit, to the second device, the authentication code and the registration information including the information on the service-providing server and the peer ID,

wherein the authentication code is transmitted from the second device to the authentication sever such that access information for accessing the service-providing server is obtained by the second device, and

wherein the information on the service-providing server includes an internet protocol (IP) address for accessing the service-providing server, or port information for accessing the service-providing server.

8. The first device as claimed in claim 7 ,

wherein the at least one processor is further configured to, to obtain the authentication code:

control the communication circuitry to transmit, to the authentication server, an authentication request message including the ID and the password of the application, and

receive, via the communication circuitry, from the authentication server, an authentication response message including the authentication code in response to the authentication request message.

9. The first device of claim 7 , wherein the peer ID is transmitted from the device-information management server to the service-providing server.

10. A second device for receiving authentication information from a first device in a wireless communication system, the second device comprising:

communication circuitry; and

at least one processor configured to:

establish a Wi-Fi peer to peer (P2P) connection between the first device and the second device;

control the communication circuitry to transmit, to the first device, second-device information about the second device based on the Wi-Fi P2P connection,

in response to registering in a device-information management server based on the second-device information, receive, via the communication circuitry, from the first device, an authentication code and registration information of the second device, wherein the registration information includes information on a service-providing server and a peer identifier (ID) to be used by the second device to access the service-providing server, and the authentication code is obtained by the first device from an authentication server based on an ID of an application associated with a service and a password of the application,

obtain, from the authentication server, access information for accessing the service-providing server based on the registration information and the authentication code, and

control the communication circuitry to transmit, to the service-providing server, a service request message for requesting the service based on access information and the registration information including the information on the service-providing server and the peer ID,

wherein the information on the service-providing server includes an internet protocol (IP) address for accessing the service-providing server, or port information for accessing the service-providing server.

11. The second device of claim 10 , wherein the at least one processor is further configured to:

Control the communication circuitry to transmit, to the authentication server, an access information request message including the authentication code, and

Receive, via the communication circuitry, from the authentication server, an access information response message including the access information in response to the access information request message.

12. The second device of claim 10 , wherein the peer ID is transmitted from the device-information management server to the service-providing server.