Method, apparatus and computer program for facilitating secureD2D discovery information

摘要

A method is provided for facilitating secure device-to-device discovery. The method may include receiving, at a terminal (104), a device-to-device (D2D) discovery signal. The D2D discovery signal may include D2D discovery information and an indication of a security level applied to the D2D discovery information included in the D2D discovery signal. The method may include determining, based at least in part on the indication, the security level applied to the D2D discovery information. A corresponding apparatus and computer program product are also provided. A 2 bit identifier in the discovery signal may be used to identify the security level. Alternative embodiments deal with the distribution of security keys to authenticated devices that are permitted to receive the key.