Raytheon Company

Colby Hoffman

William T Jennings

Nick Angelo

Michelle Moholt

Ross Mackinnon

Jennifer E Howard

Maegen A Forrer

Edward Escandon

Albert D Marzullo

A multi-die device a first die containing a plurality of first die signal path elements configured to propagate a stimulus signal and a second die containing a plurality of second die signal path elements configured to propagate the stimulus signal. The multi-die device further includes an interposer configured to establish signal communication between the first die and the second die so as to deliver the stimulus signal from the plurality of first die signal path elements to the plurality of second die signal path elements to generate a propagation delay. The propagation delay is used to generate a single unified PUF response that is indicative of the authenticity of the multi-die device.

Unified multi-die physical unclonable function

Generally discussed herein are systems, devices, and methods for device verification. A method can include providing, by test equipment (TE), electrical stimulus consistent with a challenge of a challenge response pair (CRP) to a physical unclonable function (PUF) of a device under test (DUT), receiving, by the TE and from the DUT, a response to the electrical stimulus, comparing, by the TE, the provided response to responses to CRPs in a database including PUF CRPs associated with a device identification and a device type, and validating the identity of the DUT when the response of the PUF to the electrical stimulus matches the response of the CRP or invalidating the identity of the electrical device when the response of the PUF does not match the response of the CRP.

Watermarking for electronic device tracking or verification

Methods and apparatus for generating phase-shifted clock signals from a reference clock, connecting the phase-shifted clock signals to a counter module so that the phase-shifted clock signals change values in counters in the counter module, and combining the values in the counters to generate an output signal corresponding to an amount of time. One or more events can be detected at a time corresponding to the output signal. In embodiments, pulses can be transmitted and received at a measure time to evaluate connected devices.

High resolution counter using phased shifted clock

Growing community of inventors

Fairview, TX, United States of America

Colby Hoffman