Vorrichtungen und Verfahren mit Sicherer Konfigurationsaktualisierung

Details

Veröffentlichungs-Nr.

EP4287055

Aktenzeichen

EP23175698

Anmeldetag

26. Mai 2023

Veröffentlichung

12. März 2025

Erteilung

12. März 2025

Rechtsraum

EP

IPC

G06F21/57G06F8/65G06F11/14

Abstract

One example securely updates an integrated circuit to mitigate undesirable modifications and this involves an application circuit accessing an external network while a (e.g., nonvolatile) program memory is write protected; and a reset-boot circuit resetting and booting the application circuit while access to the external network is disabled, and causing an update for the application circuit. In response to an indication that an update is downloaded for installation, the downloaded update is installed in the memory while access to the external network is disabled, and execution of the reset mode is permitted after the update is installed. Also, a retrieval module may download, in response to an indication that an update is not downloaded, an update provided via the external network while the memory is write-protected and thereby permitting execution of the reset mode after the update is downloaded.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete