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:
May. 16, 2023
Filed:
Dec. 02, 2020
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Olivier Savry, Grenoble, FR;
Thomas Hiscock, Grenoble, FR;
Abstract
A method for executing a computer program, wherein when a microprocessor writes a block of Nbytes of a datum of a block of cleartext data stored in an unencrypted memory, a security module switches a validity indicator associated with this block of Nbytes to an active state wherein it indicates that this block of bytes is valid, and each time a block of Nbytes of a datum of the block of cleartext data is loaded by the microprocessor from the unencrypted memory, the hardware security module verifies whether the validity indicator associated with this block of Nbytes is in its active state and, if such is the case, processing, by the microprocessor, of this block of Nbytes is permitted, and, if such is not the case, processing, by the microprocessor, of this block of Nbytes is forbidden.