Patent · US Active

Method for securely updating control units

US11748275B2 · kind B2 · utility

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0References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Soenkens · Kornwestheim, DE
Bjoern Kasper · Bietigheim-Bissingen, DE
Jens Schmuelling · Ludwigsburg, DE
Thorsten Schwepp · Bad Marienberg, DE

Key dates

Filing date	Jun 24, 2021
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Sep 18, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2103
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for securely updating a control unit. The control unit includes a host configured to execute an update program and at least one application program, a memory, which contains the programs and data, and a hardware security module (HSM) which is configured to block and to unblock a write access to the memory. The method includes starting the host and the HSM; blocking the write access by the HSM; starting the update program; determining by the update program whether a request of a caller to carry out an update is present; if a request is present, checking an authorization of the caller by the HSM to carry out an update, the authorization of the caller being confirmed by a confirmation unit differing from the control unit; and if the caller is authorized, unblocking the write access and rewriting at least a portion of the memory by the update program.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.