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:
Aug. 02, 2011
Filed:
Mar. 14, 2006
Alexandre Benoit, Marseilles, FR;
Laurent Gauteron, Marignane, FR;
Alexandre Benoit, Marseilles, FR;
Laurent Gauteron, Marignane, FR;
Gemalto SA, Meudon, FR;
Abstract
The invention relates to a verification of applications in interpreted language of the byte-code type (pseudo-code) loaded on portable electronic devices, in particular a chipcard and a method for verification of an application () interpreted by a virtual machine (), said application being loaded on a portable electronic device (), comprising at least one processor () and one RAM (). The method comprises carrying out the following after loading said application in the device and before validation thereof, checks in the code of said application by means of a process carried out by the processor (), characterized in comprising, on starting a sub-program, a step of backing up the actual verification context (to) in the RAM (), a step for creation and activation of a new verification context (to) for the sub-program and a step for restoration of the verification context (to) previously backed-up.