Ausführungsflussschutz in Mikrocontrollern

Details

Veröffentlichungs-Nr.

EP2996034

Aktenzeichen

EP14290272

Anmeldetag

11. September 2014

Veröffentlichung

15. August 2018

Erteilung

15. August 2018

Rechtsraum

EP

IPC

G06F9/32G06F9/38G06F21/52G06F21/77

Abstract

An execution flow protection module (30) for a microcontroller (10) with a memory (24) and a microprocessor (20) is described. The module (30) is configured to monitor the memory (24) access of the microcontroller (10) to identify instructions fetched by the microcontroller (10) from the memory (24) for execution by the microprocessor (20). The module (30) comprises an instruction decoder unit (32) for determining a program counter value associated with the execution flow of the instructions fetched by the microcontroller (10); a program counter predictor unit (34) for predicting the program counter value of the next fetched instruction; and an interrupt module (40) for responding if the next instruction fetched by the microcontroller does not match the predicted program counter value.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete