Authentication in device to device discovery

A method for authentication in device to device discovery, the method being performed by a discoveree device, comprising:

• receiving, at the discoveree device, a broadcasted direct discovery request transmitted by a discoverer device, the direct discovery request comprising an application identifier;
• and
• transmitting, by the discoveree device, a direct discovery response to the discoverer device, the direct discovery response comprising:
• i) the application identifier, ii) a discoveree device identifier or an encrypted version thereof, and iii) a first token for verifying that the discoveree device is authorized to respond to the direct discovery request, wherein
• the discoveree device transmits the direct discovery response to the discoverer device as a result of the discoveree device receiving the direct discovery request and determining, based on the application identifier included in the direct discovery request, to respond to the direct discovery request.

A wireless device for authentication in device to device discovery, the wireless device comprising a processing unit and a non-transitory computer readable storage medium, said non-transitory computer readable storage medium comprising instructions executable by said processing unit whereby said wireless device is operative to:

• broadcast a direct discovery request, the direct discovery request comprising an application identifier;
• receive a direct discovery response transmitted by a discoveree device, wherein the direct discovery response comprises:
• i) the application identifier, ii) a discoveree device identifier or an encrypted version thereof, and iii) a first token for verifying that the discoveree device is authorized to respond to the direct discovery request, and further wherein the discoveree device transmitted the direct discovery response as a result of the discoveree device receiving the direct discovery request and determining, based on the application identifier included in the direct discovery request, to respond to the direct discovery request;
• and
• use the first token to verify that the discoveree device is authorized to respond to the direct discovery request.

A wireless device for authentication in device to device discovery, the wireless device comprising a processing unit and a non-transitory computer readable storage medium, said non-transitory computer readable storage medium comprising instructions executable by said processing unit whereby said wireless device is operative to:

• receive a broadcasted direct discovery request transmitted by a discoverer device, the direct discovery request comprising an application identifier;
• and
• transmit a direct discovery response to the discoverer device, the direct discovery response comprising:
• i) the application identifier, ii) a discoveree device identifier or an encrypted version thereof, and iii) a first token for verifying that the discoveree device is authorized to respond to the direct discovery request, wherein
• the wireless device is configured such that the wireless device transmits the direct discovery response to the discoverer device as a result of the wireless device receiving the direct discovery request and determining, based on the application identifier included in the direct discovery request, to respond to the direct discovery request.

A computer program product comprising a non-transitory computer readable medium storing a computer program for authentication in device to device discovery, the computer program comprising computer code which, when run on a wireless device, causes the wireless device to:

• broadcast a direct discovery request, the direct discovery request comprising an application identifier;
• receive a direct discovery response transmitted by a discoveree device, wherein the direct discovery response comprises:
• i) the application identifier, ii) a discoveree device identifier or an encrypted version thereof, and iii) a first token for verifying that the discoveree device is authorized to respond to the direct discovery request, and further wherein the discoveree device transmitted the direct discovery response as a result of the discoveree device receiving the direct discovery request and determining, based on the application identifier included in the direct discovery request, to respond to the direct discovery request;
• and
• use the first token to verify that the discoveree device is authorized to respond to the direct discovery request.

A computer program product comprising a non-transitory computer readable medium storing a computer program for authentication in device to device discovery, the computer program comprising computer code which, when run on a wireless device, causes the wireless device to:

• receive a broadcasted direct discovery request transmitted by a discoverer device, the direct discovery request comprising an application identifier;
• and
• transmit a direct discovery response to the discoverer device, the direct discovery response comprising:
• i) the application identifier, ii) a discoveree device identifier or an encrypted version thereof, and iii) a first token for verifying that the discoveree device is authorized to respond to the direct discovery request, wherein
• the computer program is configured such that the wireless device transmits the direct discovery response to the discoverer device as a result of the wireless device receiving the direct discovery request and determining, based on the application identifier included in the direct discovery request, to respond to the direct discovery request.