公开(公告)号：US20170228326A1

公开(公告)日：2017-08-10

申请号：US15425877

申请日：2017-02-06

Applicant: DOLPHIN INTEGRATION

Inventor： Gilles DEPEYROT ,  Olivier MONFORT

IPC: G06F12/14 ,  G06F9/38

CPC classification number: G06F12/1425 ,  G06F9/3802 ,  G06F12/1408 ,  G06F21/6218 ,  G06F21/74 ,  G06F21/79 ,  G06F2212/402

Abstract: The present invention concerns a method of protecting sensitive data, and a corresponding computing system processing device, comprising: entering, by a processing device, a sensitive date access mode in-which sensitive data is accessible; restricting, by a program running in the sensitive data access mode, one or more accessible address ranges for a non-secure function, and calling, from the sensitive data access mode, the non-secure function; and entering, by the processing device, a further operating mode to execute the non-secure function during which the processing device has access to only the one or more accessible address ranges.