Authentication of ranging device

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of an initiator station (ISTA), the instructions to configure the one or more processors to:

• decode a null data packet (NDP) announcement (NDPA) frame from an initiator station (ISTA), the NDPA frame comprising a dialog token and an identification of a temporary key;
• decode a first NDP from the ISTA, the NDP comprising first long training fields (LTFs), wherein the NDP is received on a channel, and wherein the LTFs are decoded based at least on the temporary key;
• encode a second NDP, the second NDP comprising second LTFs, wherein the second LTFs are determined based at least on the temporary key;
• configure the RSTA to transmit the second NDP to the ISTA;
• encode a location measurement report (LMR), the LMR comprising the dialog token and the indication of the temporary key;
• and
• configure the RSTA to transmit the LMR to the ISTA.

An apparatus of an initiator station (ISTA), the apparatus comprising memory, and processing circuitry coupled to the memory, the processing circuitry configured to:

• in response to a determination that a value of a dialog token is a maximum value, reset the value of the dialog token, otherwise increment the value of the dialog token by one;
• encode a null data packet (NDP) announcement (NDPA) frame, the NDPA frame comprising the dialog token and an identification of a temporary key;
• configure the ISTA to transmit the NDPA to a responder STA (RSTA);
• encode a first NDP, the NDP comprising first long training fields (LTFs) wherein the first LTFs are determined based at least on the temporary key;
• configure the ISTA to transmit the first NDP on a channel to the RSTA;
• decode a second NDP, the second NDP comprising second LTFs;
• and
• decode a location measurement report (LMR), the LMR comprising the dialog token and the indication of the temporary key.