Patent ID: 11861050
Assignee: UNIVERSITY OF SOUTH FLORIDA
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A method of implementing a physical unclonable function device comprising:
providing an integrated circuit having a plurality of set/reset flip flop logic circuits, wherein each of the set/reset flip flop logic circuits is configured to enter a stable but random state for a particular input sequence;
selecting, using an input multiplexer, a mode of operation for the plurality of set/reset flip flop logic circuits between a regular mode of operation or a non-regular mode of operation;
in response to selecting the regular mode of operation, prohibiting the particular input sequence from being applied to the plurality of set/reset flip flop logic circuits;
in response to selecting the non-regular mode of operation, applying the particular input sequence to the plurality of set/reset flip flop logic circuits;
selecting, using the input multiplexer, a first set/reset flip flop logic circuit of the plurality of set/reset flip flop logic circuits;
generating a unique identifier for the integrated circuit based on an output response of the first set/reset flip flop logic circuit.