Method of auditing the wear of a memory embedded in a secure electronic token

摘要

The invention is a method of auditing the wear of a non volatile memory embedded in a secure electronic token. The non volatile memory comprises a basic unit. The token is associated with a mission profile which is intended to reflect the use of the non volatile memory for a preset duration. The token comprises a first counter which is updated each time a data is written or erased in the basic unit. The token is intended to execute applicative commands. The token comprises a second counter. The method comprises the step of
a) updating the second counter each time an applicative command belonging to a preset set is executed,
b) sending the two counters to a distant machine,
c) comparing the two counters to the mission profile.