The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2025
Filed:
Mar. 13, 2019
Applicant:
Drexel University, Philadelphia, PA (US);
Inventors:
Kyle Joseph Juretus, Quakertown, PA (US);
Ioannis Savidis, Wallingford, PA (US);
Assignee:
Drexel University, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/75 (2013.01); G06F 9/448 (2018.01); G06F 21/76 (2013.01); G06F 21/79 (2013.01);
U.S. Cl.
CPC ...
G06F 21/75 (2013.01); G06F 9/4498 (2018.02); G06F 21/76 (2013.01); G06F 21/79 (2013.01);
Abstract
A state machine system on a chip presents hidden state transitions to create IC knowledge not available in a logical netlist and temporal key dependencies to increase the difficulty of executing the SAT attack. The change in the state space of a circuit over time may be used to increase circuit security. Hidden transitions that are frequency dependent, state dependent keys, and temporally dependent transition keys may be used as ways to increase security against SAT based attacks.