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:
Sep. 22, 2015
Filed:
Jul. 23, 2012
Applicant:
Ivan Mclean, San Diego, CA (US);
Inventor:
Ivan McLean, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 21/60 (2013.01); G06F 21/57 (2013.01); G06F 21/71 (2013.01);
U.S. Cl.
CPC ...
G06F 21/60 (2013.01); G06F 21/575 (2013.01); G06F 21/71 (2013.01);
Abstract
Disclosed is a method for deterring a timing-based glitch attack during a secure boot process of a device having a device-specific number. In the method, the device generates a pseudorandom number specific to a particular execution of a secure boot process. The device combines the device-specific number and the pseudorandom number to generate a diversity value. The device may change a timing of at least one process step of the secure boot process based on the diversity value. Also, the device may change an order of process steps of the secure boot process based on the diversity value.