Gemalto Sa

Laurent Gauteron

Karine Villegas

Alexandre Benoit

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.

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Marignane, France

Laurent Gauteron