Two-way authentication between two communication endpoints using a one-way out-of-band (OOB) channel

A method comprising:

• forming a one-way out-of-band (OOB) communication channel to communicate authentication signals between a first device and a second device;
• exchanging a key over a wireless communication channel between the first and second devices;
• transmitting, over the wireless communication channel by the first device to the second device, a commitment of a first challenge;
• transmitting, over the wireless communication channel by the first device to the second device, the first challenge;
• receiving, over the OOB communication channel by the first device from the second device, a response to the first challenge and a second challenge;
• using, by the first device, the exchanged key to encrypt the second challenge;
• transmitting, over the wireless communication channel by the first device to the second device, the encrypted second challenge;
• and
• receiving, over the OOB communication channel by the first device from the second device, confirmation that the second device decrypted the second challenge with the exchanged key.

A computer-readable storage device comprising one or more instructions that if executed on a processor, configure the processor to:

• form a one-way out-of-band (OOB) communication channel to communicate authentication signals between a first device and a second device;
• exchange a key over a wireless communication channel between the first and second devices;
• transmit, over the wireless communication channel by the first device to the second device, a first challenge;
• receive, over the OOB communication channel by the first device from the second device, a response to the first challenge and a second challenge;
• transmit, over the wireless communication channel by the first device to the second device, an encrypted second challenge;
• and
• receive, over the OOB communication channel by the first device from the second device, confirmation that the second device decrypted the second challenge with the exchanged key.