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:
Dec. 20, 2011
Applicant:
Reza Yazdani, Los Altos, CA (US);
Inventor:
Reza Yazdani, Los Altos, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/54 (2013.01); G06F 21/56 (2013.01);
U.S. Cl.
CPC ...
G06F 21/566 (2013.01); G06F 21/54 (2013.01);
Abstract
The present invention provides a method and apparatus for detecting intrusions in a processor-based system. One embodiment of the method includes calculating a first checksum from first bits representative of instructions in a block of a program concurrently with executing the instructions. This embodiment of the method also includes issuing a security exception in response to determining that the first checksum differs from a second checksum calculated prior to execution of the block using second bits representative of instructions in the block when the second checksum is calculated.