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:
Jul. 16, 2024
Filed:
Oct. 07, 2021
Duke University, Durham, NC (US);
Jonti Talukdar, Durham, NC (US);
Krishnendu Chakrabarty, Durham, NC (US);
DUKE UNIVERSITY, Durham, NC (US);
Abstract
An integrated circuit (IC) protection circuit for an IC includes a controller with a barrier finite state machine (FSM) having a key sequence input that unlocks the controller; and a signal scrambler coupled to receive at least two initialization inputs and a primary input path and output a signal to the IC, wherein at least one initialization input of the at least two initialization inputs is based on an output of the barrier FSM. The IC protection circuit can further include a dynamic authentication circuit coupled to receive the output of the barrier finite state machine and output a signal to the signal scrambler for one of the at least two initialization inputs. The dynamic authentication circuit can be formed of a dynamic sequence generator and a dynamic sequence authenticator, each formed of one or more reconfigurable linear feedback shift registers, and a comparator.