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

Claim 0:
1. A physical unclonable function device comprising:
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;
a controller embedded in the integrated circuit to extract a unique identifier for the integrated circuit from an output response of the set/reset flip flop logic circuits, wherein each set/reset flip flop logic circuit is configured to generate the unique identifier; and
an input multiplexer configured to select a regular mode of operation for the integrated circuit in which the particular input sequence is prohibited from being applied to the plurality of set/reset flip flop logic circuits or a non-regular mode of operation for the integrated circuit in which the particular input sequence is applied to the plurality of set/reset flip flop logic circuits.