PPF-based complex security marking for anti-counterfeiting

摘要

The present invention relates to anti-counterfeiting protection of products. Specifically, the present invention relates to complex security markings for physical objects, in particular to anti-counterfeiting product markings. In particular, this complex security marking may be used in connection with or form a component of a multi-component security system, in particular an anti-counterfeiting protection system, without limitation, which system may also be used in connection with or form a component of an overall solution for anti-counterfeiting protection. disclosed as a part. The composite security marking includes a representation of a physically non-copyable function, a PUF, and a digital signature, or a pointer that indicates where the digital signature can be accessed. A digital signature digitally signs a hash value resulting from application of a predetermined cryptographic hash function to data representing a response generated by a PUF in response to an attempt in a predetermined challenge-response authentication scheme.