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[Category : - SOFTWARES- Telecommunications- Security and alarms]
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-| Technical Field |- The present document relates to methods and systems for enabling an efficient and reliable authentication of an electronic device, notably an Internet of Things (IOT) device. -| Background |-  It is expected that the Internet of Things (IOT) will enable various different services and applications. In the context of IOT, physical objects or devices are enhanced with embedded electronics to become identifiable, to sense their environment, and/or to connect to a global communication network. The individually identifiable devices may be integrated to provide new applications, e.g., in the context of the so-called fourth industrial revolution (Industry 4.0). In order to be able to provide efficient and reliable applications, an IOT device should exhibit relatively low energy consumption, should be cost-efficient (which typically leads to limited computational resources), and should be secured against cyberattacks. These constraints or objectives are at least partially incompatible. In particular, energy footprint concerns and the scarcity of computational resources typically limit the cryptographic methods which may be implemented for an IOT device, making it difficult to implement traditional security mechanisms. The present document addresses the technical problem of providing a resource-efficient and reliable scheme for authentication of an IOT device, notably of an FPGA (Field Programmable Gate Array) based device. -| Abstract |-  The present document describes an electronic device (120) which comprises a hardware platform (122) and a physical unclonable function, referred to as PUF, circuit (123), which is placeable in K different regions (301) on the hardware platform (122), leading to K different spatial PUF configurations of the PUF circuit (123). The electronic device (120) is configured to determine a challenge (111); to determine a currently valid PUF configuration out of the K different PUF configurations; and to determine a local response (121) to the challenge (111) using the PUF circuit (123) according to the valid PUF configuration.

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After the above-mentioned PCT application has been filed, so far, a national patent application for the USA was filed. Further national applications can be filed based on one's individual demand.

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