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US 10,785,042 B2Granted
Adjustable physical unclonable function
AssigneeRobert Bosch GmbH
InventorOliver Willers
Life of this patent
Estimating the term…
Abstract
An assembly made up of a micro-electro-mechanical system as physical unclonable function, which in reaction to a challenge, outputs a response in accordance with a mapping rule, and a controllable control element which is equipped, in accordance with a control command, to adjust an ambient parameter influencing the mapping rule.
Claims14
An assembly, comprising:
- a micro-electro-mechanical system which, in reaction to a challenge, outputs a response in accordance with a mapping rule, wherein the micro-electro-mechanical system is a physical unclonable function;
- a controllable heating element which is configured to, in accordance with a control command, adjust an ambient temperature influencing the mapping rule, wherein the mapping rule is a function of mechanical and/or electrical properties of the micro-electro-mechanical system, and the mechanical and/or electrical properties of the micro-electro-mechanical system are a function of the ambient temperature;
- and
- a temperature sensor configured to measure the ambient temperature;
- wherein the micro-electro-mechanical system, the controllable heating element, and the temperature sensor are packaged together in a single package.
2 more elements
A packaged unit, comprising:
- a plurality of assemblies, each of the plurality of assemblies including a micro-electro-mechanical system, which, in reaction to a challenge, outputs a response in accordance with a mapping rule, wherein the micro-electro-mechanical system is a physical unclonable function, wherein each of the plurality of assemblies further includes a controllable heating element which is configured to, in accordance with a control command, adjust an ambient temperature influencing the mapping rule, wherein the mapping rule is a function of mechanical and/or electrical properties of the micro-electro-mechanical system, and the mechanical and/or electrical properties of the micro-electro-mechanical system are a function of the ambient temperature, and wherein each of the plurality of assemblies further includes a temperature sensor configured to measure the ambient temperature;
- wherein the plurality of assemblies are packaged together in a single package.
A system, comprising:
- at least one assembly, each of which includes a micro-electro-mechanical system which, in reaction to a challenge, outputs a response in accordance with a mapping rule, wherein the micro-electro-mechanical system is a physical unclonable function wherein each of the at least one assembly further includes a controllable heating element which is configured to, in accordance with a control command, adjust an ambient temperature influencing the mapping rule, wherein the mapping rule is a function of mechanical and/or electrical properties of the micro-electro-mechanical system, and the mechanical and/or electrical properties of the micro-electro-mechanical system are a function of the ambient temperature, and wherein each of the at least one assembly further includes a temperature sensor configured to measure the ambient temperature, wherein the at least one assembly is packaged together in a single package;
- and
- a control unit which is equipped to generate the control command for the control heating element.
Dependencies are inferred from the claim text.