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:
Mar. 28, 2017
Filed:
Mar. 20, 2014
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventor:
Ron Keidar, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/79 (2013.01); H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
G06F 21/79 (2013.01); H04L 9/004 (2013.01);
Abstract
Disclosed is an apparatus and method to protect against key tampering. A computing device may include a cryptoprocessor that is configured to: write a first word including a first portion of a key; and write a plurality of subsequent words each including a portion of the key. If a same word is written more than once, the key is reset and not validated.