公开(公告)号：US10223290B2

公开(公告)日：2019-03-05

申请号：US15425877

申请日：2017-02-06

Applicant: DOLPHIN INTEGRATION

Inventor： Gilles Depeyrot ,  Olivier Monfort

IPC: G06F12/14 ,  G06F9/38

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.

公开(公告)号：US10282214B2

公开(公告)日：2019-05-07

申请号：US15333704

申请日：2016-10-25

Applicant: DOLPHIN INTEGRATION

Inventor： Olivier Monfort ,  Lionel Jure ,  Gauthier Reveret ,  Sébastien Genevey

IPC: G06F1/08 ,  G06F1/10 ,  G06F1/32 ,  G06F9/445 ,  G06F1/324 ,  G06F1/3287 ,  G06F1/3296 ,  G06F1/3206

Abstract: The invention concerns a computing system comprising: a plurality of islands capable of operating in one of a plurality of operating modes, a first island being coupled to a first island control circuit and a second island being coupled to a second island control circuit; a first mediation circuit coupled to the first and second island control circuits and adapted: to receive a first request from the first island control circuit to change a current operating mode of the first island; to receive a second request from the second island control circuit to change a current operating mode of the second island; and to control a first voltage supply circuit and/or a first clock generator to change a voltage and/or clock signal supplied to the first and second islands based on the first and second requests.