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. 13, 2022
Filed:
Sep. 14, 2018
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Damien Courousse, Grenoble, FR;
Abstract
An execution method comprises the following operations: —every time an instruction to be protected of a preceding basic block is loaded, constructing a new value of a signature of this preceding basic block from the value of this instruction to be protected and the preceding value of the signature. The method further includes loading an initialization vector contained in a subsequent basic block and calculating, from said loaded initialization vector, a value reached for signing the preceding basic block. The method also includes comparing the constructed value of the signature with the expected value of this signature, and—only if these values do not match, triggering the signaling of a fault during the execution of the machine code.