Patent ID: 8078873

Claim:
An apparatus comprising: a device to form a one-way out-of-band (OOB) communication channel to communicate authentication signals between a first device and a second device, wherein the OOB communication channel is tamper-proof, wherein the first device and the second device to exchange a key over a wireless communication channel; wherein the first device to transmit a commitment of a first challenge over the wireless communication channel to the second device, wherein the first device to receive confirmation over the OOB communication channel from the second device that it received the commitment of the first challenge, wherein the first device to transmit the first challenge to the second device over the wireless communication channel, wherein the first device to receive from the second device over the OOB communication channel a response to the first challenge and a second challenge, wherein the response to the first challenge is generated by using the exchanged key and wherein the response to the first challenge confirms the authenticity of the second device to the first device, wherein the first device to use the exchanged key to encrypt the second challenge and to transmit the encrypted second challenge to the second device over the wireless communication channel, and wherein the first device to receive confirmation from the second device over the OOB communication channel that the second device decrypted the second challenge with the exchanged key, wherein the confirmation of the decrypted second challenge confirms the authenticity of the first device to the second device.