公开(公告)号：US20200004952A1

公开(公告)日：2020-01-02

申请号：US16456533

申请日：2019-06-28

Applicant: INGENICO GROUP

Inventor： Christian Rolin ,  Maxime Bernelas

IPC: G06F21/51 ,  G06F21/12 ,  G06F21/56 ,  G06F21/57

Abstract: A method for determining validity of a code of an application. The method is implemented within an electronic device having a processor, a non-secure memory and a secure memory. The method includes at least one iteration of: loading the application in the non-secure memory, delivering a current application code; determining a current footprint of the current application code; obtaining, within the secure memory, a reference footprint associated with the application; comparing the current footprint with the reference footprint; and when the current footprint is identical to the reference footprint, validating the current application code, including: executing an optimization process of the current application code, delivering an optimized application code; determining a post-optimization footprint of the optimized application code; and recording the post-optimization footprint in the secure memory as a new reference footprint associated with the application.