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:
Apr. 07, 2020
Filed:
Jan. 30, 2015
Applicant:
Stmicroelectronics SA, Montrouge, FR;
Inventor:
Bruno Fel, Tullins, FR;
Assignee:
STMICROELECTRONICS SA, Montrouge, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 12/14 (2006.01); G06F 12/0802 (2016.01); G06F 21/12 (2013.01);
U.S. Cl.
CPC ...
G06F 12/1408 (2013.01); G06F 12/0802 (2013.01); G06F 21/125 (2013.01); G06F 2212/1052 (2013.01); G06F 2212/603 (2013.01);
Abstract
Program code intended to be copied into the cache memory of a microprocessor is transferred encrypted between the random-access memory and the processor, and the decryption is carried out at the level of the cache memory. A checksum may be inserted into the cache lines in order to allow integrity verification, and this checksum is then replaced with a specific instruction before delivery of an instruction word to the central unit of the microprocessor.
Fel, Bruno. (2020). Method for protecting a program code, corresponding system and processor (U.S. Patent No. 10613993). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10613993
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile