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:
Jan. 13, 2026
Filed:
Apr. 26, 2023
Microchip Technology Incorporated, Chandler, AZ (US);
Eileen Marando, Bellmore, NY (US);
Richard Wahler, Saint James, NY (US);
Arun Krishnan, Smithtown, NY (US);
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
A device with boot code, first mutable code stored in non-volatile memory, a first owner information stored in the non-volatile memory, and an SRAM with an SRAM physically unclonable function (SRAM PUF) region. Boot code may generate a first unique private key based on both the first owner information and a portion of the SRAM PUF region, wherein the first unique private key may not be directly accessible by the first mutable code; generate a first unique private keycode corresponding to the first unique private key; and provide the first mutable code with the first unique private keycode corresponding to the first unique private key. First mutable code may use the first unique private keycode to cause data to be signed with the first unique private key and generate a first unique mutable code private key based on at least a portion of the SRAM PUF region.