PUF-based composite security marking for anti-counterfeiting

摘要

The present invention relates to the field of anti-counterfeit protection of products. In particular, the invention is directed to a method of reading a marking with a physical duplication difficulty function (PUF) with a reading device and a corresponding reading device. In particular, such a reading device marking may be used with or form a component of a multi-component security system, in particular of an anti-counterfeit protection system, which is also referred to herein. At, as part of an overall security solution for anti-counterfeiting protection. The method comprises a stimulating step, wherein a physical challenge is created according to a predetermined challenge response authentication scheme corresponding to a PUF and applied to the PUF, and a detection step, wherein a challenge response authentication scheme in response to the challenge. A response generated by the PUF according to the method and a digital signal representative of the response is generated, wherein a hash value of the response is generated by applying a predetermined cryptographic hash function to the digital signal. In order to do so, a digital signal is processed, an output step is provided, wherein data representing the generated hash value as a first reading result is output.