Patent ID: 9444632
Filing Date: 2016-09-13
CPC Classification: H04L

Claim Text:
1. A device for verifying at least one challenge-response pair, the device comprising: a coherent light source configured to emit coherent light; a challenge creating device configured to create an optical challenge to be sent to a physically unclonable function (PUF); a wavefront shaping device configured to perform a verification based on an optical response from the physically unclonable function (PUF), the verification being a transformation of the optical response and not a direct readout or an indirect readout; a detector configured to read out a result of the verification performed by the wavefront shaping device and to detect a number of photons for one challenge-response pair; and a focusing device configured to focus light exiting from the wavefront shaping device onto the detector for detection, wherein, the device is configured to distinguish a positive result for verification from a negative result for verification based on a preselected number of photons detected/detectable in the detector for the one challenge-response pair.