Computational optical physical unclonable function
| DWPI Title: Method for encrypting data, involves converting data into randomized light pattern, detecting randomized light pattern output by optical element, and determining transfer function between data and randomized light pattern |
| Abstract: A system or method for encryption of data includes a light source, a random optical element and a light detection element. The light source is arranged to transmit an input data signal to the random optical element. The light source is incident on the random optical element such that the input data signal is randomly scattered by the random optical element to generate an image at on the detector disposed at an output of the random optical element. The image received by the detector is applied to a compressive sensing algorithm to generate a transfer function. The transfer function defines a relationship between the input data signal and the image to enable estimation and reconstruction of the input data signal. |
| Use: Method for encrypting data. |
| Advantage: The method enables using a serial pair of computational optical physically unclonable functions (COPUFs) and a calibration process to create a pair of devices such that secure communication is enabled between COPUF systems without an individual system being characterized at a point in a lifecycle. |
| Novelty: The method involves illuminating an optical element with an array of discrete light points corresponding to a piece of data. The data is converted into a randomized light pattern via the optical element. The randomized light pattern output by the optical element is detected. A transfer function between the data and the randomized light pattern is determined. A measured intensity level is calibrated at array points. The data of an original message displayed by an incoherent light source is determined. |
| Filed: 7/31/2019 |
| Application Number: US16527174A |
| Tech ID: SD 13448.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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