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. 16, 2018
Filed:
Apr. 04, 2014
Applicant:
Insyde Software Corp., Taipei, TW;
Inventors:
Jeffery Jay Bobzin, Harvard, MA (US);
Martin O. Nicholes, Rocklin, CA (US);
Assignee:
Insyde Software Corp., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/57 (2013.01);
U.S. Cl.
CPC ...
G06F 21/572 (2013.01);
Abstract
A firmware-based mechanism for protecting against physical attacks on ROM areas holding Authenticated Variables. A first hash of contents of at least one Authenticated Variable is created by a computing device's UEFI-compliant firmware and stored in a non-volatile storage location. Subsequently a second hash of contents of the at least one Authenticated Variable is created by the firmware and compared by the firmware to the stored hash to identify unauthorized modifications of the at least one Authenticated Variable occurring after the creation of the first hash.