Abstract:
Disclosed are various embodiments providing circuitry that includes camouflaged gates that each have multiple switches arranged in a predefined format. A switch at a specific position in one camouflaged gate can have a different threshold voltage than a switch at the specific position in another camouflaged gate. The logical function performed by the camouflaged gate can be based on which of the switches have a low threshold voltage and which of the switches have a high threshold voltage.
Abstract:
A system and method for providing a physically unclonable function (PFU) is described. In operation, the method includes applying a domain wall shift pulse challenge to a plurality of nanowires of a domain wall memory (DWM) array, wherein the nanowires of the domain wall memory (DWM) array have process induced variations, resulting in pinning potentials which affect the velocity of the domain walls along the length of the nanowires. Following the application of the domain wall shift pulse, the response to the challenge is determined by measuring the response of the plurality of nanowires of the domain wall memory to the applied domain wall shift pulse challenge to provide a physically unclonable function (PUF) for the integrated circuit.
Abstract:
Disclosed are various embodiments providing circuitry that includes camouflaged gates that each have multiple switches arranged in a predefined format. A switch at a specific position in one camouflaged gate can have a different threshold voltage than a switch at the specific position in another camouflaged gate. The logical function performed by the camouflaged gate can be based on which of the switches have a low threshold voltage and which of the switches have a high threshold voltage.