Patent · US Active

Method for safeguarding a system-on-a-chip

US9887844B2 · kind B2 · utility

5Cited by

4References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Gehrer · Erfurt, DE
Sebastien Leger · Stuttgart, DE

Key dates

Filing date	Dec 23, 2014
Grant date	Feb 6, 2018
Priority date	—
Expiry date	Oct 5, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/24
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for safeguarding a system-on-a-chip includes a hardware-programmable logic unit. In the course of a programming process, a public PUF key and a private PUF key are generated in the hardware-programmable logic unit with the aid of a physical unclonable function, and the public PUF key is signed with the aid of a second private key. The public PUF key and its signature are stored in an external memory of the system-on-a-chip, a security module is signed with the aid of a third private key, the security module and its signature are stored in the external memory of the system-on-a-chip, and the security module includes software which is used for safeguarding the system-on-a-chip.

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