Method of analyzing the wear of a non volatile memory embedded in a secure electronic token

摘要

The invention is a method of analyzing the wear of a non volatile memory embedded in a secure electronic token. A set of events are intended to generate writing and/or erasing operations in said memory. The token comprises a buffer. The method comprises the following steps: each time an event belonging to said set occurs, generating a data which reflects the event and storing said data in the buffer, sending the buffer to a remote machine, analyzing the buffer to determine the wear of the memory.

主权项

1. A method of analyzing the wear of a non-volatile memory embedded in an issued secure electronic token that is deployed to an end user, and which comprises a buffer and Universal Integrated Circuit Card (UICC) features, said method comprising the steps of:
storing, in said secure electronic token, a set of events for generating at least one of a writing and an erasing operation in said non-volatile memory, said set of events including at least high level events corresponding to commands that are sent to the secure electronic token; activating an event tracking in the secure electronic token by an active event tracking mechanism; when the event tracking is active, each time an event belonging to said set of events occurs, generating, by the secure electronic token deployed to the end user, a data which reflects said event, and storing said data in the buffer; deactivating the event tracking in the secure electronic token by a deactivated event tracking mechanism; and sending, by the secure electronic token deployed in the field, said data in the buffer to a remote machine for detailed analysis of the data in the buffer to determine the wear of the memory.