US 12,339,975 B2
Security device and methods of operating a security device
Joerg Syassen, Oberhausen (DE); Avni Bildhaiya, Deisenhofen bei Muenchen (DE); Andreas Graefe, Munich (DE); Albrecht Mayer, Deisenhofen (DE); Manuela Meier, Munich (DE); and Viola Rieger, Munich (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Mar. 22, 2022, as Appl. No. 17/700,643.
Claims priority of application No. 10 2021 107 364.2 (DE), filed on Mar. 24, 2021.
Prior Publication US 2022/0309169 A1, Sep. 29, 2022
Int. Cl. G06F 21/60 (2013.01); G06F 21/70 (2013.01)
CPC G06F 21/602 (2013.01) [G06F 21/70 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An integrated processing device comprising:
a security domain comprising at least one processing unit and a memory and configured to provide one or more cryptographic services;
a safety domain coupled to the security domain, the safety domain comprising at least one processing unit and a memory and configured to execute one or more processes, control one or more peripherals, and provide one more safety measures to detect one or more hardware faults, wherein the safety domain operates continuously or substantially continuously according to a safety related standard, further wherein the security domain operates independently of the safety domain;
wherein the safety domain is configured to, in response to detecting a hardware fault in a component of the safety domain,
perform a hardware-related remedial action on one or more components of the safety domain; and
after initiation of the hardware-related remedial action, transmit an alarm signal indicating detection of hardware faults to the security domain; and
wherein the security domain is configured to, in response to the alarm signal, perform one or more cryptographic service-related security operations.